Using 2 - 8 ohm cabinets...

[JoeyDiVision]

Hello all-

I have a Peavey mark VI amp (250W@4 ohms, 400W@2 ohms) that I would like to run through a Peavey 410TX cab (8 ohms, 350W RMS) and an unknown 410 cab (no ID plate, with 4 carvin ps10 200w 8 ohm speakers) which measured appx. 8 ohms with a meter.

I did a little reading in the archived posts and it seems to me that I could push a little less than 200 watts (or is it 100 watts to each cab?) with this setup without pushing my amp too hard. I know that 2- 4 ohm cabs would give me a little more power, but I already have the 2 4X10s.

I will be running the speaker cables from the 2 rear paralleled speaker outputs on the amp (1 to each cabinet).
My question is: Does it matter how the cabinets are wired internally (series, parallel, series/parallel)?

Thanks in advance for any/all help.

-JD

[GrowlerBox]

Originally Posted by JoeyDiVision

My question is: Does it matter how the cabinets are wired internally (series, parallel, series/parallel)?

No. If the 4 x 8 ohm speakers in the unlabelled cabinet do provide a total impedance of 8 ohms (this would typically give a reading of ~5.6 ohms when measuring DC resistance), then they are wired series/parallel. The Peavey doesn't care though, as long as you're not undercutting the minimum required impedance for the power section, and it appears you're not.

[Robby Hoinsky]

Originally Posted by JoeyDiVision

Hello all-

I have a Peavey mark VI amp (250W@4 ohms, 400W@2 ohms) that I would like to run through a Peavey 410TX cab (8 ohms, 350W RMS) and an unknown 410 cab (no ID plate, with 4 carvin ps10 200w 8 ohm speakers) which measured appx. 8 ohms with a meter.

I did a little reading in the archived posts and it seems to me that I could push a little less than 200 watts (or is it 100 watts to each cab?) with this setup without pushing my amp too hard. I know that 2- 4 ohm cabs would give me a little more power, but I already have the 2 4X10s.

I will be running the speaker cables from the 2 rear paralleled speaker outputs on the amp (1 to each cabinet).
My question is: Does it matter how the cabinets are wired internally (series, parallel, series/parallel)?

Thanks in advance for any/all help.

-JD

Should be fine. You have two 8 ohms cabs that when wired in parallel will make 4 ohms for your amp, so you'll be getting 125 watts to each cab. It is strange that it reads 8 ohms, must be higher than 8 ohms, like 10 or 12 but I've never heard of a cab like that.

Robby

[JoeyDiVision]

I probably measured the resistance imroperly. IIRC it was 6 point something which I assumed meant it was 8 ohms

I'm going to check the unlabelled cabinets' wiring anyway just to make sure it is 8 ohms (4- 8 ohm speakers wired series/parallel).

Thanks again for the help!

-JD