Q&A for How to Bridge Subwoofers

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How do I stop a new stereo amp from locking on protection mode with the first hard hit on bass?

Community Answer

Make sure you read the manual, and if that doesn't work, then contact the company from where you got that stereo.

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Question

How do I bridge a 4 channel amp with 2 SVC subs and use all 4 channels?

Community Answer

Use the positive from channel 1 and the negative from channel 2 to one of your subs. Then use the positive from channel 3 and the negative from channel 4 to your other sub.

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How do I bridge a woofer when I have one single voice coil and one double voice coil?

Community Answer

It depends on the amplifier. If it is capable of driving (powering) low impedance loads, then it can be done. If you end up putting the subs in series, then you won't get much volume out of the system. Attach + to + and - to - on the dual voice coil, then + to + amp on the single, - (single) to + (double), then - (double) to - amp. If the dual VC was 2x 4 ohm, that would give 2 ohm; if the SV is 4 ohm, you add the 2 to get 6 ohm.

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What are the disadvantages of bridging one or more subwoofers to an amplifier?

Community Answer

If you do not keep the impedance correct (4 ohms, 8 ohms, etc.), you can blow out your amplifier. Also, there is the question of whether or not your amp can handle additional speakers.

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