QUESTION bout strapping amps

Blinkdogo2
10+ year member

CarAudio.com Veteran
k

got 2 kicker sx 600.2

single 4 ohm sub

canu strap the amps then bridge each amp sending the positive and negative speaker wire from both bridged amps to the single positive and negative on the sub

so its like running the sub bridged on a amp but then adding another amp identically to the sub on the same single vc

 
the wiring, as you list it, is known as paralleling amplifiers and is one of the most difficult wiring options. for example, I know of only one non-DIY amplifier that lists this as a feature, and only as a feature for the two channels on the same amplifier. this is the class-i monster from crown/jbl. That amplifier is particularly suited for such operation.

this topology is similar to adding additional output devices, which is done to improve current handling. the idea being that each amplifier will supply half the current. thus a 2ohm speaker would be as easy to drive as a 4ohm speaker would for each amplifier. if a single amplifier can provide full power to the 4ohm speaker there would be no (or little) benefit to adding the second amplifier in parallel.

bridging/strapping are concerned with wiring amplifiers in series. in this case the output voltages sum, allowing for significantly more power, but also making the speaker as difficult to drive as a lower impedance speaker would be, for each amplifier.

in theory, amplifiers can be built to be run in series indefinately, eg, 4 amplifiers "bridged" to quadruple output voltage. of course this causes 4x current to flow through each amplifier, so the load must have an impedance 4x that of what a single channel can handle. this sounds more like what you want to do -- bridge the channels on each amplifier, then strap these two amplifiers. in such a configuration, a typical amplifier designed for 2ohm/channel would require an 8ohm speaker as a load.

refer to the wiring diagram of the kx amplifier for more details on strapping.

 
sorry, wasn't meant to be.

think of it this way -- people wire speakers in series to increase impedance seen by the amplifier. people wire speakers in parallel to decrease impedance seen by the amplifier.

the opposite is true of amplifiers.

people wire amplifiers in series to decrease the impedance seen by each amplifier. people (don't actually) wire amplifiers in parallel to increase the impedance seen by each amplifier.

because paralleling amplifiers is generally difficult/dangerous, it is very rarely done. because running more then two channels in series is also more difficult/dangerous, it is also rare.

thus the only multi-amp wiring is typically the series connection of two amplifiers, and this connection is usually called "bridging" when the channels are on the same amplifier, and "strapping" when the channels are on seperate amplifiers.

 
the stetsom amps also strap in parallel.

If the kicker amps are strappable...which i'm searching right now to see if they are...then you will strap them in series more then likely.

Which means the positive of the slave amp will be the negative speaker wire. and you'll jump a wire between the negative wires

DO NOT do this if the amps aren't designed to be strapped as it will blow up in your face lol

 
sounds complicated,

thought strapping a ampo was just running a specific wire between the two transfering all the information so they put out the same

 
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Blinkdogo2

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