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Post by runninwiththerevil (Matthew) on Mar 8, 2021 9:41:00 GMT -7
Looking at adding a 112 extension to my 112 studio deluxe Maz 38. Since I have not yet purchase the gear I wanted to ask a couple clarifying questions. I'm going to go with an 8ohm speaker in the extension to keep it easy to match with the 8ohm in the combo. I understand that I need the Y cable to be either parallel or series and that I will end up with a situation that is either putting a 4 or 16 ohm load on the amp. My questions has to do with what difference it makes.
Will there be a tonal or response difference? Will there be more or less stress on the amp (longevity of tubes) going with one over the other? Does this impact how many db's the amp will transfer to the speaker (what I'm wondering but may not be asking right is "will one option be louder")? Other considerations that I'm not thinking to ask about? I know that I'll want to consider other things in matching two speakers, but this is the first issue I'm trying to figure out.
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Post by helmi on Mar 11, 2021 16:57:00 GMT -7
I’m waiting for an intelligent answer also!
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Post by Patrick B on Mar 11, 2021 17:08:35 GMT -7
You should try both ways. I expect there might be a difference but it would probably be subtle and you may or may not have a preference. I understand that 16 ohms will be using more windings of the output transformer and some people think that's a good thing. With the EZG 50 I think I hear a little more brightness with the 16 ohm output than the 4 ohm. But it's not a huge difference. I have a Maz 38 also but haven't really experimented with it in that regard.
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Post by adam on Mar 11, 2021 17:38:38 GMT -7
You should try both ways. I expect there might be a difference but it would probably be subtle and you may or may not have a preference. I understand that 16 ohms will be using more windings of the output transformer and some people think that's a good thing. With the EZG 50 I think I hear a little more brightness with the 16 ohm output than the 4 ohm. But it's not a huge difference. I have a Maz 38 also but haven't really experimented with it in that regard. It would be hard to tell without 2 identical say 1x12 cabs with the same speaker at different impedance. I had a cab that could run at 4 or 16 and tried the head both ways and I couldn't tell, but who knows what's involved in that equation. I'm guessing the Z guys know what's up since they mess with this stuff like every day for decades now. Also guessing probably sometimes they can hear a difference and sometimes they can't, and again that's probably based on who the hells knows what. So.. guessing it's pretty minimal in the large picture. I always feel like it's more strain on the amp at a lower load, but what do I know.
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Post by runninwiththerevil (Matthew) on Mar 11, 2021 18:06:36 GMT -7
I did some searching and mostly found other forums on the topic. Some of it wasn't as reputable as what I normally find here, but I think found enough to sort out what couldn't be trusted. For the most part it sounds like it matters very little. I didn't find a number of people that said there'll be a difference in the mids, but probably not a bunch in most speakers. The most popular seems to be parallel. I felt confirmed in that when I went to PCNS to order my Y cable and that is the standard they sell.
If I knew someone with a series Y I would test it out, but I'm good going with the typical solution.
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Post by daddyelmis (Greg) on Mar 11, 2021 18:50:56 GMT -7
I’ve run my Z28 at both 4 and 16 ohm on the same speakers and I could not discern a difference. I’m sure maybe an oscilloscope or spectrum analyzer could measure a difference, but my ears couldn’t hear it. I’d run parallel only because as mentioned above that’s much more common and would be expected by anyone using your rig (or helping you set up).
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Post by headshrinker (Marc) on Mar 11, 2021 20:03:53 GMT -7
Matthew, If you haven't completed the getting of your Y cable with the good folks at pcns, you might want to look into their happy cab. You can do series or parallel from it, it's a little more expensive but it's a heck of a lot of fun to have around for mating various cabs and combos and cabs together. It lets you answer all of those series/parallel questions that always come up here. I use mine regularly.
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Post by KeithA on Mar 12, 2021 3:38:34 GMT -7
I say go big or go ohm
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Post by Hohn on Mar 15, 2021 2:51:24 GMT -7
I’d generally go parallel. These days I buy 16 ohm drivers.
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Post by helmi on Mar 15, 2021 15:46:56 GMT -7
Now, I have no idea if this is true or not, but I have read that parallel yields a tighter bass response. Anybody experience this or is it just plain BS?
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Post by runninwiththerevil (Matthew) on Mar 15, 2021 15:53:00 GMT -7
Now, I have no idea if this is true or not, but I have read that parallel yields a tighter bass response. Any body experience this or is it just plain BS? I read that in a post that attributed the information to Gerald Weber. It had a link to an old Weber blog post that was no longer active.
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Post by headshrinker (Marc) on Mar 15, 2021 17:00:33 GMT -7
I think the idea is that in series the signal hits one speaker a hair before the other and so the bass gets "spread out" a bit and in parallel it hits both speakers at the same time. I'm guessing the difference is only heard with those with dog ears and not mortals like me. I don't hear any difference.
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Post by Hohn on Mar 30, 2021 6:35:40 GMT -7
I go parallel not because of any tonal difference but because if a driver blows I still have some sound and (more importantly) some load on the output.
The tonal differences many attribute to series vs parallel are often due to difference speakers or different impedance versions of those speakers used in a given configuration. 4, 8, and 16 ohm versions of the same speaker will sound different. Heck, two samples of the "same" speaker will often have a perceptible tonal difference.
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Post by steiner on Mar 30, 2021 8:04:41 GMT -7
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Post by jhen86 (jordan) on Apr 5, 2021 19:26:42 GMT -7
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Post by zpilot on Apr 5, 2021 21:44:34 GMT -7
You should try both ways. I expect there might be a difference but it would probably be subtle and you may or may not have a preference. I understand that 16 ohms will be using more windings of the output transformer and some people think that's a good thing. With the EZG 50 I think I hear a little more brightness with the 16 ohm output than the 4 ohm. But it's not a huge difference. I have a Maz 38 also but haven't really experimented with it in that regard. If I recall correctly the guitar speaker "expert" from Jensen in the video I posted agrees with you about series wiring being a bit brighter.
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Post by jhen86 (jordan) on Apr 6, 2021 14:00:27 GMT -7
This may be worth a watch. If you watch it at the youtube link, check the video description for time codes. 10-22 min mark may be most helpful
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