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Reece · . Joined: 14 Jan 2008 Posts: 10347 Location: Kent, UK

I've been look at some small tube combos for when I go to uni, but I also want to be able to plug the combo into my PPC112 when I'm at home. The PPC112 is rated at 16 ohms.

After reading up about impedance, I am now completely and utterly confused about what I could safely plug into it, can someone explain impedance matching in thick terms, since I'm now worried I'm fucking up my TT?
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Sloan · Posted: Sun Feb 24, 2008 11:29 pm Post subject:

MAKE SURE THE RATING ON THE AMP IS EQUAL TO OR HIGHER THAN THE RATING ON THE CABINET.

ex:
16ohm amp > 16/8/4/2 ohm cab
8ohm amp > 8/4/2 ohm cab
4ohm amp > 4/2 ohm cab
2ohm amp > 2 ohm cab
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Sloan · Posted: Sun Feb 24, 2008 11:31 pm Post subject:

16ohm cab is weird to me.
I guess it's a Vintage 30 rated at 16ohms?
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Record your next album with me in Atlanta, GA. It'll be a good time.

Doog · Posted: Sun Feb 24, 2008 11:40 pm Post subject:

Reece · . Joined: 14 Jan 2008 Posts: 10347 Location: Kent, UK

mickie08 · . Joined: 14 Aug 2006 Posts: 5950 Location: Carlsbad, Ca

Sloan · Posted: Mon Feb 25, 2008 2:24 am Post subject:

hhaha.

the post right after that i actually changed.
it originally stated that i probably fucked it up. lolz.
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Record your next album with me in Atlanta, GA. It'll be a good time.

Hugogamelas · . Joined: 17 Jan 2008 Posts: 9

Mike · Posted: Mon Feb 25, 2008 8:48 am Post subject:

Actually it's never really safe to mismatch impedance either way. I posted fucking SCIENCE everywhere the last time Doog said lower was OK and it was ignored.

http://www.shortscale.org/forum/viewtopic.php?t=13794

Match if you can.

If you mismatch you're basically stressing the transformer - good transformer means no worries, a cheap or poor one = problems.

Small mismatches are generally fine in either direction. For example 8 ohm cab // 16 ohm cab = 5.33 ohms. Use the 4 ohm socket.

Just use you TT 16 ohm output.

Bacchus · Posted: Mon Feb 25, 2008 1:44 pm Post subject:

Buy an epiphone valve junior head, and sell the TT to me.

Otherwise, it'll probably blow up, like.

It's the only sensible option.
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Doog · Posted: Mon Feb 25, 2008 2:04 pm Post subject:

Mike · Posted: Mon Feb 25, 2008 2:16 pm Post subject:

I thought you said "Sitdown wees" then for a second. I was all like HOW DOES HE KNOW?

Doog · Posted: Mon Feb 25, 2008 2:30 pm Post subject:

HAHAHA

Luxury pisses ftw.
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Sloan · Posted: Mon Feb 25, 2008 3:29 pm Post subject:

I SIT DOWN WHEN I PEE
THERE AIN'T NOTHING THAT CRAZY BOUT ME
I'M JUST TAKIN A WHIZZ, MIND YOUR OWN BIZ
WHY IS EVERYBODY ALWAYS LOOKIN' AT ME?!!!
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Record your next album with me in Atlanta, GA. It'll be a good time.