Zapco C2K 9.0 to BTL

[KE1O 0]

Hi, I tried to search for the answer to this question, but couldn't really find what I needed. I have a Zapco C2K 9.0 2 Ohm version. 2 ch amp. I want to run 1 BTL 18' sub. so my question is should I get the dual 1 Ohm and run each coil to a separate channel , or dual 1 ohm coils in series to 2 ohm amp bridged as 1 channel, also what would be the pluses, minuses of running 2 1000w amps to the same sub on different coils? which will work better? sorry for the noob question. and thanks

[ChristianMcKay 1]

It's called bi-amping. As far as I know, it's fine to do.

If you're planning on running two amps to a BTL, you'll have to get the dual 2 ohm version. Your amp isn't 1 ohm stable.

[mjmarovi 8]

DO NOT I repeat DO NOT !! ever run separate runs of speaker wire to different coils on the same sub. which means, you don't run a different amp on each coil, and you don't use separate channels from the same amp on different coils. you need to get a dual 1 ohm sub, and wire it in series to 2 ohm and bridge it on the amplifier. yes, people have been known to run more than one amp on a single woofer, but that is when the amplifiers are strappable, there for they work together as one amplifier, and the wiring is a little different. you don't need to worry about that though, just bridge your amp in series to a dual 1 ohm BTL.

nice choice of equipment though, hope you have the electrical to back it up!

[ChristianMcKay 1]

His amp is 1000 watts @ 2 ohms though. Maybe he should get an amp that does 2000 watts at 1 or 2 ohms?

[mjmarovi 8]

His amp is 1000 watts @ 2 ohms though. Maybe he should get an amp that does 2000 watts at 1 or 2 ohms?

2200 rms at 2 ohm bridged..... http://www.zapco.com/prod/comp_prods/c2k90Frame.htm unless I missed something?

Edited October 30, 2009 by mjmarovi

[ChristianMcKay 1]

His amp is 1000 watts @ 2 ohms though. Maybe he should get an amp that does 2000 watts at 1 or 2 ohms?

2200 rms at 2 ohm bridged..... http://www.zapco.com/prod/comp_prods/c2k90Frame.htm unless I missed something?

Wow, dude. I TOTALLY spaced out on that one..

No, you didn't miss something, my brain was just sleeping.

[KE1O 0]

Cool, thanks guys, I think we are on the right path here. after rethinking the original question I think it really comes down to.....If I have an 2ch/1ch amp that does rated power for the sub should I run it as two coils to two channels. or two coils parallel to one channel. Thanks

[ChristianMcKay 1]

Bridge it. Never run a sub any way except mono.

[mjmarovi 8]

Cool, thanks guys, I think we are on the right path here. after rethinking the original question I think it really comes down to.....If I have an 2ch/1ch amp that does rated power for the sub should I run it as two coils to two channels. or two coils parallel to one channel. Thanks

did you not read my above post? YOU CANNOT run two coils to two channels, you will kill the sub. with that amp, the zapco 9.0 you have one choice, dual 1 ohm sub, wire in series, NOT PARALLEL to 2 ohms. you cannot wire coils on a sub separately, doesn't work that way!! alright man?

[KE1O 0]

so bridge the amp. and series the sub coils in phase?

[KE1O 0]

Cool, thanks guys, I think we are on the right path here. after rethinking the original question I think it really comes down to.....If I have an 2ch/1ch amp that does rated power for the sub should I run it as two coils to two channels. or two coils parallel to one channel. Thanks

did you not read my above post? YOU CANNOT run two coils to two channels, you will kill the sub. with that amp, the zapco 9.0 you have one choice, dual 1 ohm sub, wire in series, NOT PARALLEL to 2 ohms. you cannot wire coils on a sub separately, doesn't work that way!! alright man?

sorry didnt word that right

[mjmarovi 8]

wire one of the pos (+) terminals on the subwoofer's voice coil to the (-) neg. on the other coil. then wire the pos. on the coil that has its neg. going to the other coil to the amplifier's positive. and wire the neg. on the voice coil whose positive is going to the other coils neg. to the neg. on the amp. yes, only one pos. and one neg. going to the amplifier in the designated "bridged" pos. and neg. location. understand?

here's a diagram

http://www.the12volt.com/caraudio/woofer_configurations.asp~Q~1~I~12 the second diagram, the one for the 2 ohm load is how you want to do it.

[KE1O 0]

one coil to each channel, or both coils in series to bridged 1 ch output. sorry for confusion

[KE1O 0]

ok, sorry for noob comment. I design, program and install Fanuc robotics for a living. I AM new to installing a killer SQ system in my car and want your input on 2ch to 2 coils or bridged to two coils paralleled. thanks

[mjmarovi 8]

look at the diagram, how many times do I have to say do not run separate coils to separate channels?

wire in series as the diagram shows, then you will have one positive and one negative wire going from the subwoofer to the amplifier. your amplifier will indicate where the bridged positive (+) and negative (-) are. now so that you don't get confused when you see it, the indication on the amp will have one of the positives from one of the channels and one of the negatives from the other channel. you just need the amp to indicate which. got it?

if you have the manual to the amp it will have a picture for you, that's one of the perks for spending 2 grand on a 2-channel amp LOL. (sorry but c'mon great amp but really a waste for what you're using it for)

[KE1O 0]

no waste, just looking to see if you guru's have come up with something better

[jcarter1885 995]

Wire the subs like this:

There should be two wires leaving the sub and going to the amp (positive and negative wire), look on the amp or manual and it should have something that points terminal in channel 1to a terminal in channel 2 that says these can bridge them together. Take the subwoofer positive wire and wire it in the positive bridging terminal on the amp, take the subwoofer negative wire and put it in the negative bridging terminal on the amp (basically your changing a 2 channel amp to run in 1 channel mode).

[mjmarovi 8]

you already have the amp, so why not use the extremely clean power that it will be. just saying, there amps at 1/3 the cost that will do the same, and sound the same on a BTL when your beatin down the street.

[KE1O 0]

I am trying to add the pics of my install, how do I do it????????????????????

[mjmarovi 8]

you need to host them somewhere, like photobucket, then put the link in where the img icon is just above where you type in your message it has the little polaroid looking picture on it

[jcarter1885 995]

I am trying to add the pics of my install, how do I do it????????????????????

You can upload the images to your SSA gallery and use the image button on the posting tool bar to place the pictures link from your gallery.

[NB50 206]

DO NOT I repeat DO NOT !! ever run separate runs of speaker wire to different coils on the same sub. which means, you don't run a different amp on each coil, and you don't use separate channels from the same amp on different coils. you need to get a dual 1 ohm sub, and wire it in series to 2 ohm and bridge it on the amplifier. yes, people have been known to run more than one amp on a single woofer, but that is when the amplifiers are strappable, there for they work together as one amplifier, and the wiring is a little different. you don't need to worry about that though, just bridge your amp in series to a dual 1 ohm BTL.

nice choice of equipment though, hope you have the electrical to back it up!

You can run separate amps per coil and separate coils on different channels.

[mjmarovi 8]

DO NOT I repeat DO NOT !! ever run separate runs of speaker wire to different coils on the same sub. which means, you don't run a different amp on each coil, and you don't use separate channels from the same amp on different coils. you need to get a dual 1 ohm sub, and wire it in series to 2 ohm and bridge it on the amplifier. yes, people have been known to run more than one amp on a single woofer, but that is when the amplifiers are strappable, there for they work together as one amplifier, and the wiring is a little different. you don't need to worry about that though, just bridge your amp in series to a dual 1 ohm BTL.

nice choice of equipment though, hope you have the electrical to back it up!

You can run separate amps per coil and separate coils on different channels.

only way to run multiple amps to a woofer is to strap the amps, as long as they are strappable. as I said before. it is quite unwise to wire separate coils on the same woofer to separate channels or amplifiers, you will blow your speaker/subwoofer. I don't know where people get off on this idea, and have obviously never actually seen ppl try to do it in person.

Edited October 30, 2009 by mjmarovi

[jcarter1885 995]

I wouldnt do it but I hear of other people asking about it and doing it.

[NB50 206]

Its been discussed before. You can do it with no consequences.