amp and sub wiring help

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scriv1969

Member - Posts: 8

Joined: January 03, 2004

Posted: August 18, 2004 at 2:56 AM / IP Logged

Have a USacoustics USB 4085 amp & 1 Jl Audio 10wo sub in ported 1.5 cubic foot box.

Want more bass just need some help. Would like to go with a 10w3 or 10w6. Need help deciding dual 2 ohm or dual 4 ohm and how to wire it to the two remaining channels of amp. Only have room for 1 10 inch sub, this is in a 03 chevy blazer. The USB 4085 is rated at 85x4 at @ 4ohms,120 x4 @ 2 ohms, and 240 x 2 bridged mono @ 4 ohms. Suggestions will be a big help. Also wiring help to get the most out of the amp and sub. Thanks alot........

jigga225

Member - Posts: 6

Joined: February 06, 2003

Location: United States

Posted: August 18, 2004 at 8:33 AM / IP Logged

well since you're using a 4 channel amp, the most power you caould get would be to bridge two of the channels into one, which would give you 240 watts. The other 2 channels would still be open.

You could use a dual 2 ohm sub in this setup to give you a 4ohm bridged mode.

I dont believe you can use all 4 channels on 1 sub.

stevdart

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Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: August 18, 2004 at 8:46 AM / IP Logged

The subs you are talking about have RMS values of 250 - 300 watts. Two channels bridged on that amp will provide 240 watts. The best match is the 10W3D2, dual 2 ohm. It is rated 250 watts RMS. Wire the coils in series for a 4 ohm load and bridge to channels 3 and 4. Use the other two channels for the front speakers, 2 at 85 watts @ 4 ohm.

If you still want more bass, it would be best to find some additional space and get a second sub.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

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amp and sub wiring help

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