running 2 8ohm cabs at 8ohms?

[billskisalot]

I have two 8 ohm cabs and I want to use them both but i only have one output on my amp. The amp needs to run at 8 ohms.

I know that I can run both the cabs in series at 16 ohms but I would like to maximize power.

Is there a special cable that I can get that will allow me to do this? Is it impossible?

Thank You.

[stoo]

There's no way to run two 8ohm cabs together and still have 8ohms. Your amp deosn't have an impedance selector switch?
Stew

[jay42]

hmm...for strictly personal reasons, I do not recommend this vendor:

https://taweber.powweb.com/store/zmatch.htm

However, this is pretty much what you want.

[billskisalot]

The amp is a Fender 300ps from 1975 so no it doesnt.

Is why you dont like the vendor a reason that I should look elsewhere?

[jay42]

The amp is a Fender 300ps from 1975 so no it doesn't.

Is why you don't like the vendor a reason that I should look elsewhere?That's a horse of a different color. Six (or eight?) 6550's cranking out 300W clean, God only knows what peak...a 100W Z-Matcher will not do. It does show that the solution is possible. I believe the Z-Matcher is fundamentally an autotransformer with a lot of taps. You'd need one safe for 600W peaks...that's thick wire with very solid connections.

http://en.wikipedia.org/wiki/Autotransformer

A company like Heyboer might make you one for something reasonable. You'd have to package it safely.

[billskisalot]

ok is there any way to do it without buying what I assume will be an expensive part?

And it is 660 watts peak btw

[billskisalot]

also, how would it affect the amp's performance if i just ran it at 16 ohms?

[VaughnC]

I have two 8 ohm cabs and I want to use them both but i only have one output on my amp. The amp needs to run at 8 ohms.

I know that I can run both the cabs in series at 16 ohms but I would like to maximize power.

Is there a special cable that I can get that will allow me to do this? Is it impossible?

Thank You.
No way to make two 8 ohm cabs total 8 ohms. Run both in parallel at 4 ohms is a little safer than running into 16 ohms in series due to increased chance for flyback.

[FuzzyAce]

Could you remove tubes, half the output, and run at 4 ohms? Then run the cabs in parallel? Can this be done? Just curious...

[alderbody]

I think halving the power would require doubling the load in order to restore full bandwidth response.