Tube AMP problem! Please help me.

  • Thread starter Thread starter AngeloG.
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I haven't changed the speaker, but sure, I've thought about it. What kept me back is what would I look for on a new speaker? I have no experience in amp speakers so I wouldn't know the difference. Anyone here has an idea what a speaker would change, and how much?

a speaker can change everything including how loud the amp is.

I don't know anything about that Peavey speaker so I can't comment on it.
However, a safe speaker for almost anything is the Celestion Vintage 30.
Basically almost any amp or git sounds great thro a V30.

If all you do is metal they might not be tight enough in the bottom end but for virtually every other style of music they're an easy recommendation.
 
On guitar metal is the main genre. For others I use other instruments. So..!
 
Try the WGS Retro 30 instead - 75W.

I was planning to get one of their Reaper models, as I as looking for a Celestion G12H30 clone, and then I spotted a great deal on eBay for a brand new Retro, which is one of their several V30 clones.
It sounded pretty nice on their website, and IMO, the best of their V30 clone models. I think it's smoother yet more "articulate" as they say on their website. The Veteran still has too much hash in the upper end IMO. They say the Retro is "brighter" than the Veteran...but it's not in a bad way. It just comes across as more clarity, with no spike or the upper end hash. I think even in their sound clips you can hear how the Veteran gets fizzy in the upper end but the Retro has clarity, yet maintains a lot of warmth.

Anyway...I figured it wasn't a big risk for the price I paid even though I wanted their Reaper...and man, I loved the Retro 10 seconds after I installed it! It sits right in-between the V30 and G12H30 tone. Definitely more articulate than either, yet it cuts through like the V30 but has the smoothness of the G12H30.
I may get a couple more to swap with some of my others...

The only Reaper that's still of some interest to me is their 55Hz model....just going by the website clips.
 
Try the WGS Retro 30 instead - 75W.

I was planning to get one of their Reaper models, as I as looking for a Celestion G12H30 clone, and then I spotted a great deal on eBay for a brand new Retro, which is one of their several V30 clones.
It sounded pretty nice on their website, and IMO, the best of their V30 clone models. I think it's smoother yet more "articulate" as they say on their website. The Veteran still has too much hash in the upper end IMO. They say the Retro is "brighter" than the Veteran...but it's not in a bad way. It just comes across as more clarity, with no spike or the upper end hash. I think even in their sound clips you can hear how the Veteran gets fizzy in the upper end but the Retro has clarity, yet maintains a lot of warmth.

Anyway...I figured it wasn't a big risk for the price I paid even though I wanted their Reaper...and man, I loved the Retro 10 seconds after I installed it! It sits right in-between the V30 and G12H30 tone. Definitely more articulate than either, yet it cuts through like the V30 but has the smoothness of the G12H30.
I may get a couple more to swap with some of my others...

The only Reaper that's still of some interest to me is their 55Hz model....just going by the website clips.

Is it possible to have two speakers on a mono amp, and make a pseudo stereo?
 
No, not really.

You would need a stereo amp....and honestly, in a 212 cab, they sit so close to each other, than I doubt you would hear much stereo separation unless you had your ear right up against/between them.

Some guys use two cabs...spread 'em apart, and run some "stereo" FX through their amp....but technically, it's still NOT stereo.
 
So it's electronically impossible to daisy chain two speakers to playback the same signal? Weird.
 
No...that's not what you asked. :)

Of course both speakers can play the SAME sound.
You said, can a mono amp create pseudo stereo with two speakers.
Actually...I never quite understood what "pseudo stereo" really means (a lot of folks use that term, I'm sure I have too)...
...it's either stereo...or not.

Most folks think stereo just means using two speakers. But even forgetting the "stereo" part...a mono amp can't send two different signals, one to each speaker...it would take two amps (or a "stereo" amp) one for each speaker, and/or with some sort of blending/mixing cross both amps/speakers.

What are you really looking to do?
Except for the studio...I don't think much of "stereo" type setups for playing live guitar, mainly 'cuz you need a good amount of L/R separation between the two speakers for the "stereo" effect to be heard. Yeah, a lot of guys put up two amps/cabs, and split them a couple/three feet apart (there's not a lot of room on most club/bar stages)...but the guitar player is usually the only one that really hears the L/R effect, unless it's also pushed through the PA...in "stereo".
Most of the audience won't get much of the effect just from the two amps/cabs on the stage.
 
The term pseudo-stereo, is copying or even splitting a mono track and playing it back on two different channels, ergo speakers, making a fake stereo experience. I believe having two speakers with different color each, and mic' ing each separately will give recordings a good depth! Do I need to make any modifications to the Resistance? (Add a resistor on the speaker circuit or something?) in order for the voltage to be safe?
 
Yeah...I know what the term refers to and how people apply it (me too). I was just suggesting that it made no real sense AFA stereo. IOW...you either have stereo or you have dual mono. Calling dual mono "pseudo stereo" doesn't really make it more "stereo" or give it an accurate description. :D

Also...splitting a mono signal to two speakers gives you the exact same signal...there is NO difference. You would have to apply some sort of time-based FX (like a phaser, flanger, delay) to actually hear any L/R separation. Without that, the signal sounds exactly the same, just a bit louder.

Actually...there is NO true stereo electric guitar configuration that I can think of...it's all done via some sort of "processing"...and then you get your "pseudo stereo". ;)

But again...you will NOT achieve even "pseudo stereo" with two speakers using a mono amp...unless somehow the FX/processing comes AFTER the amp and before the speakers...though there are DSP based amps that have the ability to do that stuff internally...but now you go in yet another direction, as you are converting from analog to digital and adding yet another layer to the process ( I don't mess with those kinds of amps :) ).
I'm mainly talking about a typical guitar amp and a pair of speakers.
 
The term pseudo-stereo, is copying or even splitting a mono track and playing it back on two different channels, ergo speakers, making a fake stereo experience. I believe having two speakers with different color each, and mic' ing each separately will give recordings a good depth! Do I need to make any modifications to the Resistance? (Add a resistor on the speaker circuit or something?) in order for the voltage to be safe?
the term is used wrongly and doing that WILL NOT create a fake stereo experience. You con search for dozens of threads about that here and elsewhere.
Now ...... it's common to use two different sounding speakers to get each to add its' own sound to the mix and get a fuller sound that way. That's a useful thing to do actually and getting the different color of two speakers and combining them can certainly give you a desirable sound.
But it has nothing to do with stereo in any way. It's still mono with the 2 speakers essentially EQ'd differently.

As far as making the 'voltage' safe ....... your amp can power certain loads .... it'll be in the manual somewhere.
And it's gonna have a minimum load it can handle. You need to not go below the minimum and no, there's no easy way to add resistors to the speaker circuit to alter that. Technically it could be done but you'd need some HUGE resistors to handle the power so the basic answer is no.
 
Well, I don't really care about the term, as long as you guys understand what I am aiming to do ;) I am planning of adding a second speaker, and recording it with a separate mic, so I can have these benefits:

1) Two different mics on the same track, meaning more color.
2) I will be able to position the one mic to get all the bass and the other to get the best trebles, while having no worries about the mics being crammed into the same speaker.
3) I will have the benefit of the different speaker color, so even more versatility!
 
well yes that will work and is a useful technique.
But if you use that term on any recording boards you're gonna get the same sorta reactions where people miss the point of what you're saying because they're trying to make you understand that it's not pseudo-stereo.

For the extra speaker thing ...... I just took a quick look and that amp is rated down to 4 ohms. (double check me on this .... this is an area where you don't wanna take anyones' word on it but that's what a quick look found)
So if the speaker already in it is 8 or 16 ohms ...... get a second speaker of the same impedance. Otherwise one of them will draw the lions share of the power leaving the other speaker pretty low in volume.
So if you have an 8 ohm in it now, a second 8 ohm in parrallel will be a total load of 4 ohms which it's rated for.
If you have a 16ohm in it now, then a second 16ohm in parrallel will give you a load of 8 ohms ..... a nice safe load.

IF for some reason you have a 4 ohm speaker in there then a second 4 ohm speaker WILL HAVE TO BE WIRED IN SERIES to get a final load of 8 ohms.
2 4ohm speakers in parrallel will be a 2 ohm load ...... an amp destroying no-no.
 
OK..now I know what you are after... :)

That's a good technique...just check the positions of the mics and their combined sound. You can get some weird phase issues with some positons/distances...and a good combined sound with others.

AFA the amp handling two speakers...it's all about the load that the amp likes and the impedances of the two speakers.

Just stay at or lower of the amp's desired load. If the amp likes 8 Ohms...and your current speaker is 8 Oms...you need to stay at or above 8 Ohms with the combined speaker load. You can wire them parallel or in series for different load results. There are dozens of websites with basic wiring/load configurations...just Google it.

<EDIT>
(OK...Lt. Bob covered most of it already) :D
 
The speaker says on the label that it is indeed 16ohms. So,when I get a new speaker,16ohm I presume, How must I connect them to get the safer approach?
 
The speaker says on the label that it is indeed 16ohms. So,when I get a new speaker,16ohm I presume, How must I connect them to get the safer approach?

you would hook them up in parallel.
However ..... you need to check the minimum impedance that amp will handle.
I looked several places and saw conflicting info on that.
One place I looked said the amp's rated for 4, 8 and 16 ohms.
And they make a 2 speaker version which likely would be an 8 ohm load although they could use 2 8 ohm speakers and get a load of 16 ohms.
And apparently different versions have that extension jack labeled differently. Some say 8 ohms and some say 16.
If it says 8 on yours you're in business.

If it says 16 I'd absolutely check with Peavey. Go to their site and use the contact to ask if you can parallel a 16 ohm speaker to it getting a total load of 8 ohms.
I'm telling you this mainly because I don't wanna be responsible in the unlikely case that an 8ohm load will harm the amp.
Personally, if it were mine I wouldn't even think about it. I find it pretty hard to believe any modern amp would have a problem with an 8ohm load ....... that's a pretty standard load and the fact that they have various speaker configurations for that amp makes me think it'd be fine as would virtually any other amp.

BUT ....... I DON'T WANT YOU TO DAMAGE YOUR AMP IF I'M WRONG!!!!!!!!! So if the external jack on your is labeled 16ohms ...... check with Peavey first.

Also, the extension jack will cut off the internal speaker so you'll have to actually wire to the internal speaker. That's simple ...... just run a wire from the internal speaker to the 2nd speaker. + to + and - to -. Doing that will give you a total load of 8 ohms.
 
Lt. Bob..I tried your advice, and apparently my amp blew up, giving me major 3rd degree burns all over my body. I have sent you the suing letter, I await full refund.


Also, I lost you in the part saying about an "extension jack". I thought I could do it by just running a piece of cord from the first speaker to the second. I need more than that apparently? I don't understand which jacks are involved. Are you talking about the external speaker jack? This cuts off the main speaker so it is useless. Or I misunderstood?
 
Lt. Bob..I tried your advice, and apparently my amp blew up, giving me major 3rd degree burns all over my body. I have sent you the suing letter, I await full refund.


Also, I lost you in the part saying about an "extension jack". I thought I could do it by just running a piece of cord from the first speaker to the second. I need more than that apparently? I don't understand which jacks are involved. Are you talking about the external speaker jack? This cuts off the main speaker so it is useless. Or I misunderstood?
no, you got it right. Thats what I said ......

Lt. Bob said:
the extension jack will cut off the internal speaker so you'll have to actually wire to the internal speaker.

But the way the jack's labeled will give you a clue as to what load is safe.
If it says 8ohm minimum then you can be sure it's safe to add a second 16ohm speaker to the internal one. Go ahead and hook up another speaker.

But if it says 16ohm minimum, then you need to check with Peavey to be sure if it's safe or not.

Like I said, I have a hard time believing any modern amp can't be run into an 8ohm load but anything's possible.
 
I don't really agree.
The head version, which is the same amp, has 2 parallel speaker jacks which means it can surely be run into 8 ohms.
And various places I looked state that some of the amps have an extension jack that's labeled 8ohm minimum which also means it can be run into 8 ohms.
IF his jack is labeled 8ohms then there's no problem.

If it were my amp I wouldn't even think about it since I've basically never seen a tubed guitar amp that can't be run into 8ohms.
The ONLY reason I'm being cautious here is 'cause it's not my amp!

But, since some ValveKings are lebeled 8ohms on the extension ...... he should look at that first ..... if it says 8 then there's no problem. If it says 16 then he should contact tech support at Peavey.
And AngeloG ..... be sure you get a tech and not just a secretary reading off a manual.
 
Maybe I have back pedal a bit...

I just looked at the back of my VK112 and it says 8Ω 50Wrms @ 2.83Vrms.
So now I question if the manual is correct in stating the 16Ω minimum. I did verify the amps internal speaker is cutout when an external speaker is jacked in.
and me too .......... I went and looked at the site and the head is a 100 watt amp so it's different.
But personally, if the amp itself is labeled 8ohms ...... that's what I would consider a safe load since it's telling you it's ok to hook up an 8ohm speaker.
 
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