Ohms and more Ohms

[jpexpc 10+ year member]

Wow this is a little all over the place.
First of all your amp is not 125x2 at 4 ohms and 800 watts bridged at 4 ohms. I am guessing the 800 is MAX watts so disregard this completely.

Secondly you can wire them to 8 ohm mono or 4 ohm stereo and the power will be very close. I usually bridge the amp in this case since running stereo its not likely that the two channels put out exactly the same power and that can be bad if the subs are sharing common airspace.

I didn't realize I was quoting the Peak output. I got caught up in the impedance issues and forgot the specs. Either way this is the amp:

Sony Xplod XM-ZR1252

800W peak output @ 4 ohms, bridged

125W x 2 peak output @ 4 ohms

340W RMS (continuous), bridged

125W x 2 RMS (continuous) @ 4 ohms

170W x 2 RMS (continuous) @ 2 ohms, 20Hz - 20kHz @ 1% THD+N

High level sensing power on

80Hz low-pass/high-pass/off selectable filter with -18/-12dB octave slope (respectively)

Low boost 0-10dB (40Hz)

RCA and speaker level inputs; through out pin jacks

Frequency response: 5-50Hz (+0/-3dB)

OTL output transformation circuit pulse power supply

The subs are SVC 4 Ohm Kenwood 12" chubwoofers.

What would you recommend the best way to run it considering the amp isn't 2 ohm stable in mono? I'm guessing I'll just leave it in stereo.

 

[mokedaddy 5,000+ posts]

I would run it at 8 ohms bridged personally.

 

[93dakota 10+ year member]

I would run them each to there own channel. I would think if you were to run them in series to 8 ohms that you would only see about 85w RMS per sub.

 

[mokedaddy 5,000+ posts]

I would run them each to there own channel. I would think if you were to run them in series to 8 ohms that you would only see about 85w RMS per sub.

Dont think so much. Its actually just about the same load on the amp. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

You will get roughly the same power either way. The reason to run it bridged would be I highly doubt the channels actually put out the same power.

Will it really matter? Not really.

 

[n2audio 5,000+ posts]

moke is smart.

8 ohms bridged is essentially the sum of 4 ohms stereo just as 4 ohms bridged is the sum of 2ohms stereo.

I would bridge at 8 for reasons previously mentioned.