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Post by eggman on Oct 9, 2021 10:09:28 GMT -7
Howdy,
Is the Jetta's Master volume fully by-passable? I don't like MV.
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Post by Mark (Basement Enthusiast) on Oct 10, 2021 8:19:46 GMT -7
Just crank it all the way up, and leave it there? (I know, obvious answer.)
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Post by eggman on Oct 10, 2021 9:46:56 GMT -7
Thanks, Mark., it's not obvious to this old purist. I'm very skittish about MV...putting it mildly.
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Post by Chilly Gibbons (Todd T.) on Oct 10, 2021 10:12:57 GMT -7
It’s a PPMV type master, so all the way up and it’s essentially out of the circuit.
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Post by simpleton on Oct 10, 2021 16:21:48 GMT -7
These MV are really nice….they are really nice and open feeling; you may even find yourself thinking it’s useful.
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Post by eggman on Nov 4, 2021 16:55:24 GMT -7
These MV are really nice….they are really nice and open feeling; you may even find yourself thinking it’s useful. If only the Yetta were available without Master volume.
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Post by simpleton on Nov 4, 2021 19:36:18 GMT -7
These MV are really nice….they are really nice and open feeling; you may even find yourself thinking it’s useful. If only the Yetta were available without Master volume. The more you dream the longer you sleep on what looks to be a really neat and affordable amp. The Therapy MV was beautiful, and I am guessing that 30 watts of Jetta will be more flexible with a MV, but you can always just turn it up all the way and it’s out of circuit. Give it a go and shake off your tonal shackles. The new MV isn’t like the old ones which left a bad taste in many peoples mouths.
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Post by eggman on Nov 4, 2021 19:58:50 GMT -7
Thank you for your clear-headed, rational advice, Simpleton. I may dig a little deeper in my bank account next month and simply get the Z-Master. The Yetta indeed appeals, but for that deal-breaking MV. I even contacted Humbucker and asked if they had the clout to order a Yetta from the factory without MV and they said it cannot be arranged. I'm a purist to a fault, it might seem.
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Post by premiumplus (Dave) on Nov 5, 2021 16:02:09 GMT -7
Thank you for your clear-headed, rational advice, Simpleton. I may dig a little deeper in my bank account next month and simply get the Z-Master. The Yetta indeed appeals, but for that deal-breaking MV. I even contacted Humbucker and asked if they had the clout to order a Yetta from the factory without MV and they said it cannot be arranged. I'm a purist to a fault, it might seem. Truly, from an engineering standpoint when the Doc's PPIMV is cranked all the way up it is completely transparent. You couldn't tell if it was there or not, because electrically it isn't there when it is turned full up.
But I get it, I'm totally anal retentive about some stuff too!
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Post by lowbudget on Nov 6, 2021 7:22:31 GMT -7
Thank you for your clear-headed, rational advice, Simpleton. I may dig a little deeper in my bank account next month and simply get the Z-Master. The Yetta indeed appeals, but for that deal-breaking MV. I even contacted Humbucker and asked if they had the clout to order a Yetta from the factory without MV and they said it cannot be arranged. I'm a purist to a fault, it might seem. Truly, from an engineering standpoint when the Doc's PPIMV is cranked all the way up it is completely transparent. You couldn't tell if it was there or not, because electrically it isn't there when it is turned full up.
But I get it, I'm totally anal retentive about some stuff too! Hey Dave, I always thought that was pretty much true with any MV [Z?] amp, not just ones with PPIMV. That was always what we were told with old Silverface amps anyway. Not so? Keep in mind I’m easily led astray; I pretty much have to call in an EE to move a plug from one wall outlet to another.
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Post by Chilly Gibbons (Todd T.) on Nov 6, 2021 7:26:59 GMT -7
One of the great things about this forum, some very helpful EEs here.
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Post by premiumplus (Dave) on Nov 6, 2021 8:03:07 GMT -7
Truly, from an engineering standpoint when the Doc's PPIMV is cranked all the way up it is completely transparent. You couldn't tell if it was there or not, because electrically it isn't there when it is turned full up.
But I get it, I'm totally anal retentive about some stuff too! Hey Dave, I always thought that was pretty much true with any MV [Z?] amp, not just ones with PPIMV. That was always what we were told with old Silverface amps anyway. Not so? Keep in mind I’m easily led astray; I pretty much have to call in an EE to move a plug from one wall outlet to another. Any time you add components to a circuit it might introduce differences in tone. Many times it is true that the tone won't be appreciably changed when the MV is turned all the way up, but it depends on how it's implemented. Sometimes the circuit might change the impedance of a stage, and that may or may not be an issue. It gets complicated...
I've always thought that the simpler the design is the better the tone tends to be.
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Post by Don A on Nov 7, 2021 15:43:19 GMT -7
There are some PPIMVs that are completely transparent when turned all the way up- electronically, they are the same as if the amp did not have a master in it. There are other PPIMVs that are not transparent when turned all the way up. Some PPIMV types sound better with some amps and some sound better with other amps. Some PPIMVs sound better for someone who likes to set them low, even if they aren't transparent when turned all the way up. This can be good for someone who will never turn the master all the way up
The PPIMV has differed slightly in all four of my Dr. Z amps. I don't know what he uses in the Jetta.
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Post by JonesKY on Nov 30, 2021 16:20:04 GMT -7
The Jetta's MV really doesn't have a negative impact on the tone. But even if it did, the Jetta's MV impacts/changes the sound significantly less than... * turning down to a low volume then adding a gain pedal; or, * pushing the amp to a preferred gain setting then 1) attenuating, 2) turning the cabinet, or 3) placing the cab in isolation, then monitoring. The beauty of the Jetta is that it sounds great clean or crunchy, and the latter can be dialed down without killing the tone; but even if you hate the MV, turning it to 10 (removing its effect on the circuit) sounds great too. Super versatile, tough to beat, and it's pretty easy-going, too.
$.02
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Post by premiumplus (Dave) on Dec 1, 2021 6:42:22 GMT -7
When it's MV is turned all the way up, it's literally just like a straight piece of wire in the circuit. It's transparent, electrically and audibly.
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Post by markT on Jan 1, 2022 10:03:02 GMT -7
Thanks, Mark., it's not obvious to this old purist. I'm very skittish about MV...putting it mildly. I'd be very skittish about this amp WITHOUT a MV!!! Remember.... a Z Wreck is 30 watts!!...The JETTA is 30 watts!! They are LOUD. The master volume is one of the absolute high points of this amp. 2 years in and still my favorite Z amp. And one of the most versatile. Bedroom to big stage and everywhere in between~
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