![]() Do not connect the4th sub back to the amplifier, the first sub is already connected to the amp. Next, connect the same + wire from the second sub to the empty + terminal on the 3rd sub, and then connect the + on the 3rd sub to the + on the 4th sub. Next, you’ll connect the +from the amp to the empty + on the first subwoofer (not the + that is already bridged with the - on the same sub.) Run another wire from the +on the first sub (the one that’s also connected to the amp) and connect that to the empty + on the second sub. This leaves both posts empty on the amp still, and each sub with one empty + post and one empty - post. Your amp has a + and a -, and each sub has two +’s and two -’s.Įach of the subs should have a bridge wire to connect one of the +’s with one of the -’s on the same sub. If you have four subs, each one with dual voice coils at 2 ohms, and a mono amp under a 1-ohm load, here’s an explanation of how to wire that… If you have two2-ohm subwoofers, you would divide 2 by 2 and get an impedance of 1 ohm. The formula for calculating the impedance in parallel wiring is to add together the total ohms from each subwoofer, and then divide them by the number of subwoofers. Unlike in series, where positives connect to negatives. Parallel Wiring: When you’re wiring in parallel, the positive wires connect to the positive posts, and the negative wires connect to the wireless posts.Four 2-ohm speakers wired in parallel would give you an impedance of 8. Wiring in Series: When you’re wiring multiple subwoofers in series, you’re connecting the positives from one subwoofer to the negatives on the next one.The formula for calculating the total ohm load when wiring in series is to simply add the ohms from each speaker together.This also applies to subwoofers with dual voice coils. The formula to calculate the impedance will depend on whether you’re wiring in series or in parallel. First things first, you’ll need to determine how many subwoofers you plan on wiring into your amp, and what their requirements are, and what your amplifier can output in terms of power.
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