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Post by gfreak on Oct 14, 2019 12:32:14 GMT -7
Finally stopped playing the Jetta to share some thoughts. Started off with a low output p-90 guitar. The amp had lots of clean headroom. The amp did break up until I had the volume up to 2-3 o'clock range. When I used humbuckers the break up started around 11_12. I got such nice crunch tones!
The tone control has a very usable range. Down all the way it reminded me of the "mud" switch on a Grestch(usable but not my personal favorite.) Up all the way gets very bright but not ice picky. I noticed that with the volume up into the break up and beyond range turning the tone up past 3 added a nice sizzle to the tone.
The master works great at keeping the tone on the amp throughout its range. When the master is turned up past 3 the amps seemed to get a bit more gain. I think that this from either the speaker breaking up and/or the power section adding to the sound.
Pedals sounded great. So far I have used a fuzz, an overdrive and a boost. I got so lost in the playing the amp straight up that I really did not want to stop and hook up pedals.
I am sure once the speaker is broken in it will sound better(if that is even possible!)
My only knock is with the master up past 11 the amp has a hiss while idling. Although I never stopped playing long enough for it to bother me. My Ghia is the same way and I love that amp.
Another amazing amp from the good Dr!!
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Post by doctorice on Oct 14, 2019 14:13:58 GMT -7
I also noticed that there was a little more noise when the amp is at idle than some of my other Zs. But, so what, right? Sound is glorious.
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Post by gfreak on Oct 14, 2019 20:43:24 GMT -7
I also noticed that there was a little more noise when the amp is at idle than some of my other Zs. But, so what, right? Sound is glorious. It is indeed. When I loose track off time playing I know that piece of gear(guitar, amp or pedal) is a keeper. |
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Post by buckeye on Nov 13, 2019 13:52:26 GMT -7
I also noticed that there was a little more noise when the amp is at idle than some of my other Zs. But, so what, right? Sound is glorious. What I have noticed, at least with my Jetta, is the noise is only noticeable through the effects loop. Once master is above 11 the noise is disturbing. I hooked up my pedalboard through the loop of my Z-Plus to make sure my board wasn't the problem but it was whisper quiet. I like the tone when the master on the Jetta is at about 2 o'clock but the hiss/hum is unbearable at that setting. Does anyone else have this problem or have an idea what would be causing it? |
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Post by lowbudget on Nov 13, 2019 14:09:51 GMT -7
I also noticed that there was a little more noise when the amp is at idle than some of my other Zs. But, so what, right? Sound is glorious. What I have noticed, at least with my Jetta, is the noise is only noticeable through the effects loop. Once master is above 11 the noise is disturbing. I hooked up my pedalboard through the loop of my Z-Plus to make sure my board wasn't the problem but it was whisper quiet. I like the tone when the master on the Jetta is at about 2 o'clock but the hiss/hum is unbearable at that setting. Does anyone else have this problem or have an idea what would be causing it? Buckeye, I’m a little confused. You say once the master is above 11 the noise is disturbing. But is that only when you’re using the loop AND the master is above 11? In other words would the amp be quiet with the master above 11 (or even the 2:00 you mention) if nothing was in the loop? |
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Post by buckeye on Nov 13, 2019 15:04:54 GMT -7
What I have noticed, at least with my Jetta, is the noise is only noticeable through the effects loop. Once master is above 11 the noise is disturbing. I hooked up my pedalboard through the loop of my Z-Plus to make sure my board wasn't the problem but it was whisper quiet. I like the tone when the master on the Jetta is at about 2 o'clock but the hiss/hum is unbearable at that setting. Does anyone else have this problem or have an idea what would be causing it? Buckeye, I’m a little confused. You say once the master is above 11 the noise is disturbing. But is that only when you’re using the loop AND the master is above 11? In other words would the amp be quiet with the master above 11 (or even the 2:00 you mention) if nothing was in the loop? Yes the amp is quiet when loop is not used. Even at a high master setting. And to be clear, the hum is audible even when the master is at the lowest setting just more tolerable. |
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Post by DRZ on Nov 13, 2019 15:44:40 GMT -7
Well I have gone through over 100 of the Metro loops with out a problem
Maybe there is problem with yours it’s possible as no one else
has complained.
Send your amp in and I’ll check it out and replace the
loop if needed.
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Post by buckeye on Nov 13, 2019 16:02:23 GMT -7
Thanks Doc! I'll get it over to you.
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Post by rollyfoster on Mar 9, 2020 7:06:04 GMT -7
Thanks Doc! I'll get it over to you. How did this end up? I just got a collider for the loop and it does the same thing. It’s fairly quiet at lower volumes but as the amp gets turned up there’s a loud hiss when the pedal is turned on. I’m assuming it’s just gain from the power section amplifying it? The amp does have some white noise on its own even without anything plugged in but when the pedal in the loop gets turned on the hiss is at least twice as loud. Dunno...may have to go without reverb here but it’s kind of a bummer. |
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Post by DRZ on Mar 9, 2020 10:35:35 GMT -7
Thanks Doc! I'll get it over to you. I’m assuming it’s just gain from the power section amplifying it? The amp does have some white noise on its own even without anything plugged in but when the pedal in the loop gets turned on the hiss is at least twice as loud. Dunno...may have to go without reverb here but it’s kind of a bummer. Could be the noise/gain of the pedal since it's not the amp on its own. Also the power supply feeding the pedal must be very clean. A pedal causes an issue and it all the amps fault, really..... I have tested and retested the Jetta alone and with pedals , even went to the trouble of sending a Jetta to George for him to evaluate and no problems with noise were observed . I don't believe the problem is with the Jetta or its loop. |
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Post by DRZ on Mar 9, 2020 10:37:20 GMT -7
I’m assuming it’s just gain from the power section amplifying it? The amp does have some white noise on its own even without anything plugged in but when the pedal in the loop gets turned on the hiss is at least twice as loud. Dunno...may have to go without reverb here but it’s kind of a bummer. Could be the noise/gain of the pedal since it's not the amp on its own. Also the power supply feeding the pedal must be very clean. A pedal causes an issue and it all the amps fault, really..... I have tested and retested the Jetta alone and with pedals , even went to the trouble of sending a Jetta to George for him to evaluate and no problems with noise were observed . I don't believe the problem is with the Jetta or its loop. I believe buckeyes problem was a noisy power supply in his pedal board . |
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Post by rollyfoster on Mar 9, 2020 10:55:58 GMT -7
I’m assuming it’s just gain from the power section amplifying it? The amp does have some white noise on its own even without anything plugged in but when the pedal in the loop gets turned on the hiss is at least twice as loud. Dunno...may have to go without reverb here but it’s kind of a bummer. Could be the noise/gain of the pedal since it's not the amp on its own. Also the power supply feeding the pedal must be very clean. A pedal causes an issue and it all the amps fault, really..... I have tested and retested the Jetta alone and with pedals , even went to the trouble of sending a Jetta to George for him to evaluate and no problems with noise were observed . I don't believe the problem is with the Jetta or its loop. Well yeah that’s why I’m asking someone who had a similar issue. I’m not necessarily blaming the amp for anything. What I think is happening is that when the amp master gets up about halfway there is a little idle white noise with or without the pedal or anything else even plugged in. Which is fine, I understand that gain adds some noise and the amp is gonna start blowing as it gets turned up. When the pedal is in the loop and turned on the white noise gets way louder. If I turn the master down the white noise goes down with it. At anything under 10 o’clock or so it’s not that bad which is why I didn’t even notice it until my wife was out of the house and I cranked the little beast. It’s a reverb/delay pedal and doesn’t do it in the front of the amp or in a different amp’s loop. Maybe it is the pedal and I need to try something else. I dunno. I’m just wondering if he resolved it or if there was even anything to resolve. I think the amp is operating exactly as it should. |
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Post by frankie on Mar 9, 2020 13:03:17 GMT -7
Could be the noise/gain of the pedal since it's not the amp on its own. Also the power supply feeding the pedal must be very clean. A pedal causes an issue and it all the amps fault, really..... I have tested and retested the Jetta alone and with pedals , even went to the trouble of sending a Jetta to George for him to evaluate and no problems with noise were observed . I don't believe the problem is with the Jetta or its loop. Well yeah that’s why I’m asking someone who had a similar issue. I’m not necessarily blaming the amp for anything. What I think is happening is that when the amp master gets up about halfway there is a little idle white noise with or without the pedal or anything else even plugged in. Which is fine, I understand that gain adds some noise and the amp is gonna start blowing as it gets turned up. When the pedal is in the loop and turned on the white noise gets way louder. If I turn the master down the white noise goes down with it. At anything under 10 o’clock or so it’s not that bad which is why I didn’t even notice it until my wife was out of the house and I cranked the little beast. It’s a reverb/delay pedal and doesn’t do it in the front of the amp or in a different amp’s loop. Maybe it is the pedal and I need to try something else. I dunno. I’m just wondering if he resolved it or if there was even anything to resolve. I think the amp is operating exactly as it should. How is the noise floor when the volume is all the way up with the pedal in front? Is it significantly louder with the pedal in the signal path? If the Collider is the Source Audio Collider, it is a digital pedal, so it would be good to know what power supply you are using. Transformer based supplies have caused noise issues, especially when they are very close to the pedal they are powering. We have an issue with a local customer who brought his Jetta and we found the location of his transformer based power supplies induced all sorts of noise when they were under the pedals in the loop. Something also to consider is that the Collider, by default, is a buffered pedal. So there may be some makeup gain in the pedal itself that is increasing the noise floor of the loop, which is a buffered loop, so it has it's own gain staging. Further more, there could be an impedance mismatch between how the in/out impedance of the pedal with the loop itself due to the pedal's own buffer. Now the Collider is able to be run as a true bypass pedal which will defeat the buffer, but you will sacrifice the trails feature. From the Collider manual: "Both bypass methods have pros and cons associated with them. Buffered bypass provides consistent input impedance so that if the source is susceptible to variations in input impedance (similar to a guitar pickup), there won’t be a noticeable change in tone. True bypass has the benefit of providing a dedicated hardwired bypass signal path. The Collider features small-signal relays for true bypass switching that offer reduced pops and clicks compared to the traditional true bypass switching method using a mechanical switch." Finally, I know there is an app in which you can use to lower and raise the gain of the pedal itself. So each patch on the pedal can have a different volume level. Decreasing the gain of the pedal itself while in the loop should lower the noise floor while the pedal is in buffer mode. |
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Post by rollyfoster on Mar 9, 2020 15:31:19 GMT -7
Well yeah that’s why I’m asking someone who had a similar issue. I’m not necessarily blaming the amp for anything. What I think is happening is that when the amp master gets up about halfway there is a little idle white noise with or without the pedal or anything else even plugged in. Which is fine, I understand that gain adds some noise and the amp is gonna start blowing as it gets turned up. When the pedal is in the loop and turned on the white noise gets way louder. If I turn the master down the white noise goes down with it. At anything under 10 o’clock or so it’s not that bad which is why I didn’t even notice it until my wife was out of the house and I cranked the little beast. It’s a reverb/delay pedal and doesn’t do it in the front of the amp or in a different amp’s loop. Maybe it is the pedal and I need to try something else. I dunno. I’m just wondering if he resolved it or if there was even anything to resolve. I think the amp is operating exactly as it should. How is the noise floor when the volume is all the way up with the pedal in front? Is it significantly louder with the pedal in the signal path? If the Collider is the Source Audio Collider, it is a digital pedal, so it would be good to know what power supply you are using. Transformer based supplies have caused noise issues, especially when they are very close to the pedal they are powering. We have an issue with a local customer who brought his Jetta and we found the location of his transformer based power supplies induced all sorts of noise when they were under the pedals in the loop. Something also to consider is that the Collider, by default, is a buffered pedal. So there may be some makeup gain in the pedal itself that is increasing the noise floor of the loop, which is a buffered loop, so it has it's own gain staging. Further more, there could be an impedance mismatch between how the in/out impedance of the pedal with the loop itself due to the pedal's own buffer. Now the Collider is able to be run as a true bypass pedal which will defeat the buffer, but you will sacrifice the trails feature. From the Collider manual: "Both bypass methods have pros and cons associated with them. Buffered bypass provides consistent input impedance so that if the source is susceptible to variations in input impedance (similar to a guitar pickup), there won’t be a noticeable change in tone. True bypass has the benefit of providing a dedicated hardwired bypass signal path. The Collider features small-signal relays for true bypass switching that offer reduced pops and clicks compared to the traditional true bypass switching method using a mechanical switch." Finally, I know there is an app in which you can use to lower and raise the gain of the pedal itself. So each patch on the pedal can have a different volume level. Decreasing the gain of the pedal itself while in the loop should lower the noise floor while the pedal is in buffer mode. Thanks for all the info! It’s powered by a truetone cs6 and not near the PSU but if I put it over there isn’t any difference. Both the amp and pedalboard are plugged into the same furman power strip. Here’s what I’ve got...buffered mode makes a difference when the pedal is turned off. The noise is present in both modes and is a little bit louder when the buffer is on. In true bypass the switches pop loudly. The noise is still present in either mode when the pedal is engaged, delay side moreso than reverb side. Pedal output via the app doesn’t affect it. It also remains even is the input volume on the amp is all the way off. If the pedal is in front of the amp the noise floor is about like any other pedal. ...Now the curveball... I also have a Z-plus at my house right now and the collider is dead quiet in that loop regardless of buffer status. Same instrument cables, power cables to board and amp, etc. The noise floor of the Plus is much lower in general. The only other delay I have to try is a belle epoch deluxe but that thing hisses like an angry snake anyways. |
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Post by buckeye on Mar 9, 2020 16:27:41 GMT -7
How is the noise floor when the volume is all the way up with the pedal in front? Is it significantly louder with the pedal in the signal path? If the Collider is the Source Audio Collider, it is a digital pedal, so it would be good to know what power supply you are using. Transformer based supplies have caused noise issues, especially when they are very close to the pedal they are powering. We have an issue with a local customer who brought his Jetta and we found the location of his transformer based power supplies induced all sorts of noise when they were under the pedals in the loop. Something also to consider is that the Collider, by default, is a buffered pedal. So there may be some makeup gain in the pedal itself that is increasing the noise floor of the loop, which is a buffered loop, so it has it's own gain staging. Further more, there could be an impedance mismatch between how the in/out impedance of the pedal with the loop itself due to the pedal's own buffer. Now the Collider is able to be run as a true bypass pedal which will defeat the buffer, but you will sacrifice the trails feature. From the Collider manual: "Both bypass methods have pros and cons associated with them. Buffered bypass provides consistent input impedance so that if the source is susceptible to variations in input impedance (similar to a guitar pickup), there won’t be a noticeable change in tone. True bypass has the benefit of providing a dedicated hardwired bypass signal path. The Collider features small-signal relays for true bypass switching that offer reduced pops and clicks compared to the traditional true bypass switching method using a mechanical switch." Finally, I know there is an app in which you can use to lower and raise the gain of the pedal itself. So each patch on the pedal can have a different volume level. Decreasing the gain of the pedal itself while in the loop should lower the noise floor while the pedal is in buffer mode. Thanks for all the info! It’s powered by a truetone cs6 and not near the PSU but if I put it over there isn’t any difference. Both the amp and pedalboard are plugged into the same furman power strip. Here’s what I’ve got...buffered mode makes a difference when the pedal is turned off. The noise is present in both modes and is a little bit louder when the buffer is on. In true bypass the switches pop loudly. The noise is still present in either mode when the pedal is engaged, delay side moreso than reverb side. Pedal output via the app doesn’t affect it. It also remains even is the input volume on the amp is all the way off. If the pedal is in front of the amp the noise floor is about like any other pedal. ...Now the curveball... I also have a Z-plus at my house right now and the collider is dead quiet in that loop regardless of buffer status. Same instrument cables, power cables to board and amp, etc. The noise floor of the Plus is much lower in general. The only other delay I have to try is a belle epoch deluxe but that thing hisses like an angry snake anyways. |
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Post by buckeye on Mar 9, 2020 16:54:40 GMT -7
Rolly the Doc is correct when he said he thought my issue was with my pedalboards power supply. I brought my pedalboard into the Z shop and the guys spent some time with me and found a couple of things. I had 2 different delay pedals running daisychained from one outlet of my Voodoo lab power supply. I found out that that is a no no. My power supply was mounted directly below the delays another no no. They also suggested that I switch to a digital powersupply. When I got home I rearranged my board as they had suggested and switched to a Cs7 1 spot and the noise was drastically reduced. It is still a bit noisier than my Plus's loop but manageable. The Jetta is a higher gain amp than the Plus so I guess that should be expected.
Having said all this, the Jetta is an awesome amp and backed by an great company. The personal attention I received from Doc and his guys was amazing.
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Post by rollyfoster on Mar 9, 2020 17:24:29 GMT -7
Rolly the Doc is correct when he said he thought my issue was with my pedalboards power supply. I brought my pedalboard into the Z shop and the guys spent some time with me and found a couple of things. I had 2 different delay pedals running daisychained from one outlet of my Voodoo lab power supply. I found out that that is a no no. My power supply was mounted directly below the delays another no no. They also suggested that I switch to a digital powersupply. When I got home I rearranged my board as they had suggested and switched to a Cs7 1 spot and the noise was drastically reduced. It is still a bit noisier than my Plus's loop but manageable. The Jetta is a higher gain amp than the Plus so I guess that should be expected. Having said all this, the Jetta is an awesome amp and backed by an great company. The personal attention I received from Doc and his guys was amazing. Yeah I’m aware of potential PSU gremlins but I have the same brand as yours, albeit a different model and have never daisy chained anything. I’m testing with nothing else plugged in on the 500mA tap. Just guitar into amp and collider in the loop. The thing is, this isn’t happening with 2 other amps so that’s why it’s confusing me. The Plus is absolutely dead silent. If it were happening in there too then I’d have an idea of how to approach it. Using the exact same equipment yields a different result in each amp. Was yours doing anything like this? |
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Post by buckeye on Mar 9, 2020 17:42:55 GMT -7
Yes Rolly that's what mine was doing.
I wish I could be more help.
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Post by frankie on Mar 9, 2020 18:46:04 GMT -7
Rolly the Doc is correct when he said he thought my issue was with my pedalboards power supply. I brought my pedalboard into the Z shop and the guys spent some time with me and found a couple of things. I had 2 different delay pedals running daisychained from one outlet of my Voodoo lab power supply. I found out that that is a no no. My power supply was mounted directly below the delays another no no. They also suggested that I switch to a digital powersupply. When I got home I rearranged my board as they had suggested and switched to a Cs7 1 spot and the noise was drastically reduced. It is still a bit noisier than my Plus's loop but manageable. The Jetta is a higher gain amp than the Plus so I guess that should be expected. Having said all this, the Jetta is an awesome amp and backed by an great company. The personal attention I received from Doc and his guys was amazing. Yeah I’m aware of potential PSU gremlins but I have the same brand as yours, albeit a different model and have never daisy chained anything. I’m testing with nothing else plugged in on the 500mA tap. Just guitar into amp and collider in the loop. The thing is, this isn’t happening with 2 other amps so that’s why it’s confusing me. The Plus is absolutely dead silent. If it were happening in there too then I’d have an idea of how to approach it. Using the exact same equipment yields a different result in each amp. Was yours doing anything like this? [EDIT: Sorry I didn’t read all of the above thread. This paragraph can be disregarded.] So you are also using a CS7 power supply? And that clicking we are hearing is you turning the pedal on? Just making sure I know what I am hearing. Again, like I said, there is a buffer in that pedal. And the metro loop is also buffered. So if you use the Neuro app on the collider, you should be able to turn the output gain down on the pedal which will decrease the noise floor. Have you tried to turn the buffer off on the collider all together? [END EDIT] The Z Plus is a simple insert FX loop which has no buffering. It is not the same FX loop as the Jetta. So when folks put a huge signal chain in the simpler loop, like in the Z Plus, they complain of lost high end from capacitance of the cable runs in the chain. To correct this we began using the Metro FX Loop, specifically as we found in the early stages of the NOVA, certain digital FXs would cause oscillation, and the Metro FX also corrected this. Yet in the end, there is no standard for buffering and impedance I/O in the pedal world, and especially in the digital realm, despite the wonderful algorithms that give the user endless sounds, the AD/DA conversion chips being used are bottom barrel Chinese made chipsets that have no standard of noise floor, but also allows pedal makers to make boxes full of wonderful digital algorithms for cheap consumer electronic prices. And there are literally tens of thousands of pedals on the market, so as an amp designer, we are tasked with the impossible expectation to make an FX loop that works with every possible signal chain or pedal. So you see where the frustration both from our end and the customer’s end begins when someone comes across a pedal or accessory (power supply) that causes issues because we can not account for literally every pedal. |
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Post by frankie on Mar 9, 2020 18:55:11 GMT -7
I also have this pedal at home and will bring it in this week to see what happens when we use it in a Jetta at the shop. Just to make sure there isn’t something faulty with the loop.
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Post by rollyfoster on Mar 9, 2020 18:56:43 GMT -7
Yeah I’m aware of potential PSU gremlins but I have the same brand as yours, albeit a different model and have never daisy chained anything. I’m testing with nothing else plugged in on the 500mA tap. Just guitar into amp and collider in the loop. The thing is, this isn’t happening with 2 other amps so that’s why it’s confusing me. The Plus is absolutely dead silent. If it were happening in there too then I’d have an idea of how to approach it. Using the exact same equipment yields a different result in each amp. Was yours doing anything like this? So you are also using a CS7 power supply? And that clicking we are hearing is you turning the pedal on? Just making sure I know what I am hearing. Again, like I said, there is a buffer in that pedal. And the metro loop is also buffered. So if you use the Neuro app on the collider, you should be able to turn the output gain down on the pedal which will decrease the noise floor. Have you tried to turn the buffer off on the collider all together? The Z Plus is a simple insert FX loop which has no buffering. Yet when folks put a huge signal chain in the simpler loop, they lose high end from capacitance of the cable runs in the chain. To correct this we began using the Metro FX Loop, specifically as we found in the early stages of the NOVA, certain digital FXs would cause oscillation, and the Metro FX also corrected this. Yet in the end, there is no standard for buffering and impedance I/O in the pedal world, and especially in the digital realm, despite the wonderful algorithms that give the user endless sounds, the AD/DA conversion chips being used are bottom barrel Chinese made chipsets that have no standard of noise floor, but also allows pedal makers to make boxes full of wonderful algorithms for cheap consumer electronic prices. And there are literally tens of thousands of pedals on the market, so as an amp designer, we are tasked with the impossible expectation to make an FX loop that works with every possible signal chain or pedal. So you see where the frustration both from our end and the customer’s end begins when someone comes across a pedal or accessory (power supply) that causes issues because we can not account for literally every pedal. It’s a cs6, the smaller model from truetone and I haven’t had any problems with it so far. I just tried the pedal’s own adapter and acts the same. The clicking/pop is because the pedal is in true bypass. If I put it in buffered then the pop goes away but the background hiss is a little louder when the pedal is not engaged, which I assume is due to the buffer’s gain like you explained. I also tried to turn down the output signal of the pedal via the app and that didn’t change anything. The only variable I haven’t checked is the metro itself. I know it has +4 and -20, would that possibly have something to do with it? I’m not married to the pedal. I can return it and try something else, I just don’t have something else to compare it to currently to see if that’s where the problem is. I’m certainly open to suggestions on other options for reverb, etc. Thanks for all the help! |
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Post by frankie on Mar 10, 2020 8:30:10 GMT -7
rollyfoster no problem, I am also curious that for some reason your loop could be set on the +4 setting (line level) as opposed to -20 (instrument level) which would definitely increase noise floor. I don't know why it would be, but for whatevever reason, it's something to make sure we rule out. I'll be testing my Collider through the Jetta this week to further troubleshoot the issue.
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Post by lowbudget on Mar 10, 2020 9:08:29 GMT -7
rollyfoster no problem, I am also curious that for some reason your loop could be set on the +4 setting (line level) as opposed to -20 (instrument level) which would definitely increase noise floor. I don't know why it would be, but for whatevever reason, it's something to make sure we rule out. I'll be testing my Collider through the Jetta this week to further troubleshoot the issue. Wow. Until this very moment I had no idea this was even a "thing". I'll be very interested in the answer to this one. If this turns out to be the case I guess I'll be looking at my third Jetta! |
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Post by frankie on Mar 10, 2020 10:00:02 GMT -7
rollyfoster no problem, I am also curious that for some reason your loop could be set on the +4 setting (line level) as opposed to -20 (instrument level) which would definitely increase noise floor. I don't know why it would be, but for whatevever reason, it's something to make sure we rule out. I'll be testing my Collider through the Jetta this week to further troubleshoot the issue. Wow. Until this very moment I had no idea this was even a "thing". I'll be very interested in the answer to this one. If this turns out to be the case I guess I'll be looking at my third Jetta! The line level setting is obviously for older rack style FX units that aren't exactly in vogue anymore, but it's there someone wants to stick their old Quadraverb in there. The -20dB instrument level is set for use with the ubiquitous floor pedals that 99% of guitarists use nowadays. |
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Post by lowbudget on Mar 10, 2020 10:20:53 GMT -7
Wow. Until this very moment I had no idea this was even a "thing". I'll be very interested in the answer to this one. If this turns out to be the case I guess I'll be looking at my third Jetta! The line level setting is obviously for older rack style FX units that aren't exactly in vogue anymore, but it's there someone wants to stick their old Quadraverb in there. The -20dB instrument level is set for use with the ubiquitous floor pedals that 99% of guitarists use nowadays. Frankie, I guess what I need to know is whether it’s possible my two could have both been on the incorrect setting (they were 8 serial numbers apart) and secondly if so, could it have been responsible for the extreme noise when the master was at noon or higher with the loop engaged. |
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Post by frankie on Mar 10, 2020 10:28:40 GMT -7
@lowbudget
Extremely unlikely. But for posterity purposes, I'd like to know what pedals and power supplies were you using at the time, so that I can begin to make a list of known issues. The devices available to us are limited. We have not had any issues with increased noise with Boss digital delays, Earthquaker reverbs, all sorts of Strymon pedals, large and small, in the loop.
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Post by rollyfoster on Mar 10, 2020 10:33:06 GMT -7
rollyfoster no problem, I am also curious that for some reason your loop could be set on the +4 setting (line level) as opposed to -20 (instrument level) which would definitely increase noise floor. I don't know why it would be, but for whatevever reason, it's something to make sure we rule out. I'll be testing my Collider through the Jetta this week to further troubleshoot the issue. Thanks! I’ll crack her open after work and take a look. I was looking into the metro loop and came across that feature. Will check the switch and trim pot positions. |
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Post by lowbudget on Mar 10, 2020 10:50:41 GMT -7
@lowbudget Extremely unlikely. But for posterity purposes, I'd like to know what pedals and power supplies were you using at the time, so that I can begin to make a list of known issues. The devices available to us are limited. We have not had any issues with increased noise with Boss digital delays, Earthquaker reverbs, all sorts of Strymon pedals, large and small, in the loop. Sure Frankie. First off, the very last segment of this short video (not mine) is *exactly* the noise my two made and at the same settings: www.dropbox.com/s/y72hy08y3g280ih/IMG_0714.MOV?dl=0I tried the following pedals and power supplies: Holy Grail Nano Reverb using the dedicated power supply that comes with the pedal Mr. Black Deluxe Plus Reverb/Trem with a One Spot power supply Mr. Black Deluxe Deluxe Plus Reverb/Trem (different product) with a One Spot power supply Strymon Flint with the dedicated power supply I also tried various sets of patch cables and tried moving everything away from the amp with the exact same results as shown at the end of the video. |
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Post by frankie on Mar 10, 2020 12:54:42 GMT -7
rollyfoster no problem, I am also curious that for some reason your loop could be set on the +4 setting (line level) as opposed to -20 (instrument level) which would definitely increase noise floor. I don't know why it would be, but for whatevever reason, it's something to make sure we rule out. I'll be testing my Collider through the Jetta this week to further troubleshoot the issue. Thanks! I’ll crack her open after work and take a look. I was looking into the metro loop and came across that feature. Will check the switch and trim pot positions. If you are looking at the top of the the amp down at the guts, with the controls facing you, and the speaker outputs facing away from you, the switch should be in the DOWN position. that's -10dB. Now for the trimmer. I have to STRONGLY advise against this. Not only is there high voltage in that area, the trimmer is EXTREMELY sensitive and we set the unity gain both by scope on a QA bench and then check by ear. It WILL change the gain structure and tone of the amp, even the smallest adjustment of the pot will drastically change how things sound. So if you move it, getting it back to how the amp should sound at unity gain will be a crap shoot without scoping and knowing exactly how it should sound. That's why I would say, the trim pot is probably not going to solve the problem. What I would like ask about from the video you post, is the background hum. Not necessarily the white noise that gets amplified, but I hear a hum that isn't dependent on volume. Do you have any idea what the source of that is? I'm point towards a grounding issue possibly. |
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Post by frankie on Mar 10, 2020 13:05:14 GMT -7
@lowbudget Extremely unlikely. But for posterity purposes, I'd like to know what pedals and power supplies were you using at the time, so that I can begin to make a list of known issues. The devices available to us are limited. We have not had any issues with increased noise with Boss digital delays, Earthquaker reverbs, all sorts of Strymon pedals, large and small, in the loop. Sure Frankie. First off, the very last segment of this short video (not mine) is *exactly* the noise my two made and at the same settings: www.dropbox.com/s/y72hy08y3g280ih/IMG_0714.MOV?dl=0I tried the following pedals and power supplies: Holy Grail Nano Reverb using the dedicated power supply that comes with the pedal Mr. Black Deluxe Plus Reverb/Trem with a One Spot power supply Mr. Black Deluxe Deluxe Plus Reverb/Trem (different product) with a One Spot power supply Strymon Flint with the dedicated power supply I also tried various sets of patch cables and tried moving everything away from the amp with the exact same results as shown at the end of the video. I'm just very confused by this issue with the Flint because this is the exact pedal we use to QA all the Jettas. We don't get this noise using the Flint and it's power supply. If you are standing away from the amp, with the pedal in the loop on the floor using shielded instrument cables, a transformerless/switching power supply, you shouldn't get this noise. Yet, if you are setting things up this way, I can tell you what WILL create noise regardless: Standing close to the amp with your guitar. Placing the pedal or it's power supply on top of the amp. Having your cables running over top of the amp, over the transformer. Having your cables running over the pedal or it's power supply. Not being on a properly grounded outlet or using an ungrounded power cable. Those are the situations were noise will occur and be amplified, even if you are using the proper power supplies. Other than that, I will be doing further troubleshooting this week to see if I can create noise in the loop like the one rollyfoster is getting. |
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