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Old 06-26-2015, 11:43 PM   #1
Stildawn
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Another Ohm Question

Hi All

I'm sure you have all seen these questions before, but my new amp has sort of thrown me a bit. So just need confirmation.

The amp is a Peavey Vypyr 60 Tube, I have an old crappy quad box lying around that I wanted to run the Peavey into, the cab is 8ohm.

Now... The back of my Peavey looks like this:



You see the issue, the top says 8ohm ext speaker? But below the output jack is says 16ohm?

Whats going on?

Is it 8ohm or 16ohm? The single speaker in the combo says 16ohm on it.
Can I run a 16ohm into a 8ohm cab regardless?

Thanks
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Last edited by Stildawn : 06-26-2015 at 11:58 PM.
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Old 06-26-2015, 11:54 PM   #2
Will Lane
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And the winner for UG's biggest thread-starter picture goes to you! How on earth did you do that?

And don't mismatch the imps for the Vypyr 60. Solid States can deal with mismatches but that's another issue. Tube amps aren't so happy about it, and although the Vypyr 60 isn't real tube I wouldn't do it.

What it might be suggesting is the internal speaker will not cut off when an ext speaker is plugged in. I presume you would need another 8 ohm speaker load like what you have, so the ext speakers are wired in series. 8+8=16 total. But I'm not sure if the internal speaker will cut off or not.
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Last edited by Will Lane : 06-26-2015 at 11:56 PM.
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Old 06-27-2015, 12:32 AM   #3
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What does the owners manual say? Some amps can run both, some cannot.
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Old 06-27-2015, 06:17 AM   #4
Stildawn
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It's a generic manual that covers the whole range of amps. Surely if it says 8 ohm for the ext speaker it should be OK?
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Ashcustomworks: Phoenix RRV
ESP LTD: M200FM - With EMG 81/81
ESP LTD: M50 - With EMG HZ's
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Amps:
Peavey: Vypyr 60 Tube - 1x12
Marshall: AVT100 - 1x12 & 4x12
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Old 06-27-2015, 09:46 AM   #5
Paleo Pete
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I'm not sure, but the Peavey Vipyr 112 extension cabinet I looked up is 16 ohms.

http://www.amazon.com/Peavey-Vypyr-...t/dp/B004B8IKRC

http://www.musiciansfriend.com/ampl...speaker-cabinet

http://www.fullcompass.com/product/396598.html

You might join the Peavey Forums and ask there...
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Old 06-27-2015, 10:48 AM   #6
fly135
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The manual says the output is in parallel with the internal speaker and a min 16ohm load should be plugged into that jack. Oddly enough the picture of the back panel for the 60/120 has 16 Ohm printed where your amp says 8 Ohm. My advice would be to call contact tech support and tell them that your amp is in disagreement with the manual. Sounds to me like you should be using a 16 ohm cab if you plug in the ext cab and the internal speaker is still active.
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Old 06-28-2015, 02:21 AM   #7
crackerjack123
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^+1 16ohm cab is correct. I run 120 tube through 16 ohm 4x12, 120's speakers remain active.
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Old 06-28-2015, 02:27 AM   #8
Stildawn
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Hmmm ok, it wouldnt have anything to do with wall voltage? I live in NZ and we have 240v wall outlets?
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Old 06-28-2015, 03:28 AM   #9
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No, im in uk. 240v here too.
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Old 06-28-2015, 07:24 PM   #10
Stildawn
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Odd, Well I've emailed Peavey hopefully they can clear it up.
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Old 06-28-2015, 10:23 PM   #11
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Quote:
Originally Posted by crackerjack123
^+1 16ohm cab is correct. I run 120 tube through 16 ohm 4x12, 120's speakers remain active.


that is what i would read it as. it seems like an 8 ohm jack, expecting a 16 ohm load to go with it's onboard speaker.
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Old 06-28-2015, 11:33 PM   #12
Stildawn
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So plugging in a 8 ohm cabinet is ok?
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Ashcustomworks: Phoenix RRV
ESP LTD: M200FM - With EMG 81/81
ESP LTD: M50 - With EMG HZ's
ESP LTD: EX50
Fender: Strat

Amps:
Peavey: Vypyr 60 Tube - 1x12
Marshall: AVT100 - 1x12 & 4x12
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