So pulling 2 conductors side by side and soldering them together, NO. Same type, model and capacitance. Your best option is to run one sub per amplifier at 3ohm. Two amplifiers, each rated 100 watts maximum for an impedance of 4 Ω (four Ohms); in bridge mode they will appear as a mono amp, rated 200 watts into 8 Ohms.This is the most commonly misunderstood mode of operation and it requires additional circuitry to implement if the pair of amplifiers does not have the facility built in. You will have two places to adjust sub level (sub out on main receiver, main volume on sub receiver). Also, you need to look at the true power of your speakers. \$\begingroup\$ Read my answer carefully, especially the last 2 lines. I have 2 (two) Class D Stereo Amplifiers that are Bridgeable, they can support 2 x 8ohm (min 6ohm) speakers in Stereo and 1 x 4ohm Speaker in Mono (Bridged), it's also working properly and the Audio Input is the same as the Audio Decoder, a 3 … Example. Which means you could not strap your amps to a 3ohm load. Your options wiring the subwoofers together to strap the amps, would be 1.5ohm and 6ohm. But what happens if you wire batteries of different voltages and amp hour capacities together in … NEC 110.14b Says you can solder or braze current carriers if they are mechanically bonded and electrically secure even with out solder. Sticking a wire in a terminal lug and filling the cup with solder, NO. You can wire two amplifiers, or even multiple amps, in one car audio system, but it takes some extra planning. You're limited to only the power output of your second amplifier, not the combined power of your two amps. two 6 volt 4.5 Ah batteries wired in parallel are capable of providing 6 volt 9 amp hours (4.5 Ah + 4.5 Ah). First connect them with a resistor or a car lightbulb in between to limit the current. minimalist is right, pre-amp outputs are the way to go, but there's a small issue. To accommodate 3 amps and 2 pairs of speakers you can daisy-chain 3 switches made according to the same principle as my switch. One SLA at 12 V and another at 11 V will cause VERY LARGE CURRENTS to flow as one charges the other. four 1.2 volt 2,000 mAh wired in parallel can provide 1.2 volt 8,000 mAh (2,000 mAh x 4). You can connect this to any input on the 2nd receiver that is line level (any one other than phono). I'm not sure what you're trying to get at, but in general unless you want 3 different sound systems, you can't add power that way. Re: Splicing two different types of wiring - Is it ok to do? When placing batteries in parallel always make sure they're the same voltage. Do not strap the amps onto a 1.5ohm load. If the sub receiver is not two channel then set it to stereo (no subs). 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