Peavey Classic 30 Head - 16 Ohm Only???

ExpatBrit

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Oh dear,

I just scored a Peavey Classic 30 head on the bay, and then finished researching it - I think I did it in the wrong order!!

I have an Avatar 2x12 cab which has a total resistance of 8 Ohms (2 16 Ohm Celestion speakers in Parallel), but from what I can tell the Classic 30 head will only accept a load of 16 Ohms.

Obviously there is no way of wiring 2 16 Ohms speakers to present a total load of 16 Ohms. Is there such a thing as a plug in load to make my 8 Ohm cab present a 16 Ohm load to the amp? Can the head be re-wired to accept an 8 Ohm load? Did I just do something really stupid?

Help!!
 

Gold_topped

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Oh dear,

I just scored a Peavey Classic 30 head on the bay, and then finished researching it - I think I did it in the wrong order!!

I have an Avatar 2x12 cab which has a total resistance of 8 Ohms (2 16 Ohm Celestion speakers in Parallel), but from what I can tell the Classic 30 head will only accept a load of 16 Ohms.

Obviously there is no way of wiring 2 16 Ohms speakers to present a total load of 16 Ohms. Is there such a thing as a plug in load to make my 8 Ohm cab present a 16 Ohm load to the amp? Can the head be re-wired to accept an 8 Ohm load? Did I just do something really stupid?

Help!!

I dont know of any dummy load plug, but they may exist. I was doing some research and it seems as though some of those models accepted 8 ohms, does yours specifically say (on the head) that it takes 16 ohms only?
 

diceman

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It should have 2 16ohm outs - can you power each speaker separately?

I've got 2 of the Classic extension cabs (4x10 and 1x15) - you can still find them. I paid about $300/each for mine. Keep an eye on Ebay!
 

diceman

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Here is a new style 2x12.

Peavey Classic Series 212 Extension Cab - Tweed - Tone! - eBay (item 270378694665 end time May-22-09 10:08:39 PDT)

As you can see, I love my Classics (C30 and C50 w/ cabs) - so much that I've got my Laney full stack on consignment waiting to sell. I've got less $$ wrapped up in these 2 rigs than I did in the stack, and I use these things all of the time in several configurations. You can still find these cabs, though - but there aren't any on Ebay at the moment.

P1030450.jpg
 

ExpatBrit

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Trouble is I just got the Avatar a few weeks ago - Oh crap! Looks like the Peavey will be back up for sale without me ever playing it.
 

diceman

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Is there any way to wire in a 2nd jack so that each speaker gets powered by each of the 2 channels? Does that make sense? Not that you'd want to do that... just a thought.
 

ExpatBrit

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Sent an email to Peavey to see if they can help. I understand the combo version supports 8 Ohm extension cabinets so maybe there is an easy fix.
 

diceman

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Hmmm... I guess I wasn't aware of that. I have a Classic 30 combo, and it just says "extension speaker" at the jack, and on the back plate it says "16 ohm minimum load."
 

Mike-t

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If you decide to sell it I may be interested, let me know...
 

bad261

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The Peavey combo, which I own, switches to 8 ohms automatically when you plug in an extension speaker cable. I presume the head does likewise.
 

ExpatBrit

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Unless Peavey says there is an easy way to rewire it (I did some checking and it looks like the standard output transformer has 8 and 16 Ohm taps) I guess I either need to buy new speakers for my Avatar cab (2 8 Ohm speakers in parallel) or buy another 8 Ohm cab and run it in series with my 2x12 for a total load of 16 Ohms. Does this make sense?
 

dwagar

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it should run 8 or 16 ohms according to the spec I saw.

the combos have 16 ohm load internal, so they require an ext speaker of 16 ohms, to equal 8 ohms (that's why the ext jack is marked minimum 16 ohms).

you should be able to use your 8 ohm cab with the head.

see if you can find a manual for the head though. With my Marshall JTM60 combo, to use just an 8 ohm cab requires plugging it into the ext cab jack, not the internal speaker jack (which is set for 16 ohms).
 

ExpatBrit

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Yeah, according to the manual the combo will run either 8 or 16 Ohm speakers, but for some reason the head will only run into 16 Ohms. I am guessing that this was just cost cutting, and that the 8 Ohm tap is still there on the OT. It may be as simple as swapping a wire.
I am still amazed that Peavey would do this as even my $200 Blackheart has 4, 8, and 16 Ohm output jacks.
 

dwagar

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does the head not have 2 speaker jacks?
 

dwagar

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man, that's really limiting. Did you contact Peavey?
 

ExpatBrit

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Yes, sent them an e-mail, not expecting a response until Monday. I really hope I can work with it as I hear really good things about this amp. Disappointing that it doesn't have this flexibility, aren't 8 Ohm 1x12 and 2x12 cabs the most common?
 

Jason

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Yes, sent them an e-mail, not expecting a response until Monday. I really hope I can work with it as I hear really good things about this amp. Disappointing that it doesn't have this flexibility, aren't 8 Ohm 1x12 and 2x12 cabs the most common?

Well, they probably wanted you to buy their specially matched cab! Actually, I think the amp was designed as a combo and the head was an afterthought. It shouldn't be too awful hard to rewire to the other tap. I need to crack open my Epi VJ and rewire the 4 ohm to the 8 ohm so I can plug it into some old tiny Marshall cabs.
 

bad261

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Well, they probably wanted you to buy their specially matched cab! Actually, I think the amp was designed as a combo and the head was an afterthought. It shouldn't be too awful hard to rewire to the other tap. I need to crack open my Epi VJ and rewire the 4 ohm to the 8 ohm so I can plug it into some old tiny Marshall cabs.

I looked up the specs and I think Jason is 100% right. It's a shame because the combo kicks butt. The Peavey 2x12 cab is 16 ohms, I guess two 8 ohm speakers in series.
Kinda lame.
 

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