hooking up 2 subs to a single amp?

Question

Hey i have a question about hooking up 2 subs to a single amp and i have no clue how. I have 2 of these http://www.jbl.com/car/products/product_detail.aspx?prod=GTO1004D&CheckProduct=Y i want to hook up to one of these amps http://www.jbl.com/car/products/product_detail.aspx?prod=CS300.1&Language=ENG&Country=US&Region=USA&cat=AMP&ser=CSS JBL has 2 diagrams on their site http://www.jbl.com/car/product_support/SubwooferWiring/sub_wiring_diagram.aspx?type=2-4-1 and http://www.jbl.com/car/product_support/SubwooferWiring/sub_wiring_diagram.aspx?type=2-4-4 , and im not sure which one to use

Answer 1

You cannot bridge a subwoofer. Bridging is a term used for combining 2 channels of an amplifier to one.
Wire positive to positive and negative to negative for each woofer. Then wire positive to positive and negative to negative between the woofers, and likewise also to the amplifier. This will give a 1 ohm load. The only problem is that I don't know if the amplifier is stable at 1 ohm (couldn't open the owners manual, kept freezing my browser). It probably is, because it is a subwoofer amp.

Answer 2

Two Subs One Amp

Answer 3

The amplifier isn't stable for 1-ohm operation, so you're limited to the 4-ohm setup in the second diagram.

Answer 4

* Parallel: A dual 4-ohm voice coil subwoofer with its coils wired in parallel presents a 2-ohm load to your amplifier. Since an amplifier produces more wattage at a lower impedance, the parallel connection ensures you'll get the most output from your amp. In the same fashion, if you have a stereo amplifier and two DVC subs, wire both subs for 2-ohm impedance (one per channel) for maximum output.

* Series: Series wiring lets you configure multiple woofers to one amplifier at an acceptable impedance. Wire both coils in series for an 8-ohm impedance, and then wire two 8-ohm subs together in parallel for 4-ohm total impedance (perfect for most 2-channel amps bridged to mono operation). Another example: if you have a high-powered 2-channel amplifier, wire four 8-ohm subs per channel (each channel sees a 2-ohm load).

* Independent: You can wire each voice coil to a separate channel of your amplifier, if you prefer not to bridge your amp. Independent wiring is a nice option if you're wiring two DVC subs to a 4-channel amplifier — one voice coil per channel.

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp?submitted=true&woofer_qty=2&woofer_imp=4

Go here for wiring diagrams and pics of how to do your project.

Answer 5

the firs diagram is wrong, that would produce a 2 ohm load the way they have it drawn. to produce a 1 ohm load, you would need 2, dual 2 ohm subs.

Answer 6

hook both speakers up bridged. it will work fine, but you might want to get another one of those amps so you can run each speaker individually and still push enough power to give it a lot more bump.

Answer 7

This people dont even know use the first diagram is better because it gives your amp less stress, and the sound will be much better, i have mine like that.

Answer 8

man... what you need to do is go to the12volt.com!!! and scroll down a lil and click on sub wiring. It will give you all the answers you need bout this question!!!!

Answer 9

use the one that makes 4 ohms (not 1 ohm). its called parallel wiring (vs. series wiring)...look it up.

Answer 10

go to rockfordfogate.com and it will show you how to hook up your speakers and what the ohm load will be.