Two D2s, 4 Channel Bridged

[ctmaudi 10+ year member]

Untill I decide on a mono amp for my SA-10s, going to bridge a DSC480. I know to wire each sub seperate for 4ohm, and run pos/neg from one to chan4/3 pos and neg, same for other to chan2/1.

What Im unsure of is the RCAs. Have one set from sub out on HU. Do I get two Y splitters, and run the white split to chan1/2, and the red split to chan3/4? Or do I only need to plug the white and red in to channels 2 and 4, the ones getting the possitve from the subs? The manual only shows wiring for 4 and 3 channel use.

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[Ineed$ 10+ year member]

There's no need for y splitters with this amp. Just set the "input mode" switch to 2 channel.

 

[ctmaudi 10+ year member]

Going to give it a try in a little bit. Do I have to do the gains for both sets of channels, or just 1/2?

 

[ctmaudi 10+ year member]

Hooked it up, just RCAs going to chan1/2. The bottom x-over switch is on DUPE chan3/4, and the chan3/4 one is set to LP.

For 250 each at 4ohm, I need about 30v right? Thats about 3/4 gain with the HU HPF at 150Hz for the doors, and the LPF at 120hz. On the amp I have the LPF at 90, and the sub sonic at 30ish.

Does alright at really high volume, but then the speakers distort a little. Subs dont seem like the go as low as the did with the old amp. With the HU at 23/35 volume, you can tell there is bass, but I remember it doing more with the old amp at 500w.

With music, the DMM never went over 10v to them. With a 60hz -3db test tone, its at 30v.

Input volts is 14.46 idle, drops to 13.45 is the lowest I saw it go with the test tone.