Adding a woofer to a 4 channel amp with 4 speakers
I purchased a 4 channel amp, and I am utilizing all 4 channels of the amp with the 4 car speakers. I need more base so I want to add a subwoofer to the existing amp, without buying another amp just for that. Can this be done? If so, where do I plug in the wires in the amp from the sub?
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Re: adding a woofer to a 4 channel amp with 4 speakers
Well yeah thats what im doin riht now in my ford taurs what u do is u can hook up your 5x7s and ur 6x9s on ur amp sill have room for a sub the way too do that is get the front speakers off the amp just run the back andsince its a four channlel amp 1 and 2 channel are used for the back and 3 and four are used for thesub of couse u brige the sub to the amp 3 and four are used for the sub hope that helps friend let me no what happens
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if it is a 5.1 channel amp wire the center speakers together into the same port. wire the two front speakers in the or der that they would appear on the amp (such as left front speaker to the left front speaker terminal on the amp etc.) and do the same for the rear speakers. and all you should have left is the sub-woofer channel in which you do not have to worry about.
yes, the amp can be used fof full range speakers. to use it a s such, the amp's "crossover" switch must be set to "off" (could also be labeled as "full-range" or "defeat").
the amp is 2 channel. 4 channel is for surround sound or to have independent front and rear channels/volumes. this 2 channel amp will support 4 speakers, but you wont be able to balance from front to back- the front and back speakers will be at the same volume all the time if both are hooked up to the amp.
The six 1/2 speakers are your woofers,connect the positive and negative wires from the speaker to the 2 connections labeled on the crossover as W(woofer)+ pos and W(woofer) -- neg,hook the tweeters to the crossover connections labeled T(tweeter)+ pos and T(tweeter) -- neg,then hookup the 2 remaining connections labeled Amp to your amplifier,amp must be 2 or 4 channel stereo capable and give out enough power to properly drive the speakers so they achieve optimal performance.
i have found the specs to your amp.
1. Amplifier connections: Lets make things simple. As we look at the amplifier speaker connections, we will number the outputs 1 2 3 4 from left to right for the top connections and again 5 6 7 8 from left to right for the bottom connections.
1 should be connected to a positive (RED) (+) on sub woofer A on voice coil (a)
4 should be connected to a negative (BLACK) (-) on sub woofer A on voice coil (b)
Now using a small piece of cable, connect negative of voice coil (a) to positive of voice coil (b)
Follow the same procedure for the other sub woofer using 5 and 8 as 1 and 4
This configuration should make the amp run at 4 OHM BRIDGED x 2.
i hope this helps.
the speakers can handle about 45 watts rms a piece and the vr3 box can probabily handle 100 watts on its best day. your best bet is a 4 channel amp. use the front two channels for the jvc speakers and bridge the rear 2 channels for he vr3 box...keep the gains under 3/4 and tune the hrtz. fereq. to about 80 herts.hih pass filter on for the frot channel and low pass filter onfor the rear channel
First are they in the same box? If so and they are sharing the same air space running one amp to both is best andwill perform better. One woofer could be over powering the other and or you could have a woofer problem. A lso your wiring coul be problem. When amp is bridged it changes the OHM reading and output your other woofer may not be rated at or able to handle a lower Ohm rating also it coul blow that woofer if it hasn't already hapened . Be careful. check woofers independently for operation and check the non performing woofer on an unbridged power source or amp. Hope this helps. Write back if not.
Your woofer has 4 terminals because it is a dual voice coil woofer. It has two electrically seperate coils wound together. This can be used two ways. If you have one woofer only and a two channel amp, each channel can be fed to its own voice coil on the woofer. The other way would be to wire them in parallel to get a 2 ohm impedance or in series to get an 8 ohm impedance or just use one coil to get a 4 ohm impedance. If the negative broke off of one the other should still be good. This would usually be 4 ohm for each coil. The other broken coil can be repaired but it would require removal of the surround and spider from the frame and if you have never done this before it isn't recommended you try it. If you are running a dual channel amp you may want to bridge it to one channel if you are to use one woofer with one coil only. If you have a pair of woofers, use one coil on the other as well since the loads(Ohms) should be equal to each other.
Pyramid makes the PB series of amps. I have one that's driving a Sub.
The PB 700 puts out rms 60watts x 2 @ 2ohms, which gives you some "headroom" for your speakers. You don't want to over drive speakers with , for example, a 1000 watts for 100 watt speakers, because that's a good way to blow your speakers.
There are many brands and models of amps that will fit your speakers. Just make sure the amp will drive 2ohm speakers, since your jbl's are rated at 2ohm impedance.
You may want to consider adding a Sub woofer to your setup. A single Sub would fill in the low end very nicely. If you got a 4 channel amp, then two channels will drive your jbl's, and you can bridge the other two channels to drive the Sub. That would be a kick'n sound!
Just make sure the amp is bridgeable
For example, the Pyramid PB 1200 is a 4 channel, bridgeable amp. This particular amp will drive the 2ohm jbl's, but you would want a 4 or 8 ohm Sub connected to the bridged channels.
your speakers are hooked up wrong. hook both positives together and both negatives together and bridge it to the amp. if it is one channel hook it up as one together. if it is 2 channel hook positive to one side and negative to the other side.
I don't know what kind of Amp you have, but you have to bridge the channels together.....For example, on a 2 channel amp you would just take the + wire from the Left channel and the - wire on the right channel and run it to the speaker. This uses the combined power from BOTH channels and funnels it right into the speaker. I hope you have a low frequency filter "LPF" adjustment. In case you are unfamiliar with this term, LPF is a function that most top-shelf amps have which will cut out most all mid-range and all high-range frequencies and put out only LOW (BASS) frequencies......At any rate, since you have a 4 channel amp, to bridge all 4 channels is a little more complicated so I am not going to elaborate too much information as of now only because I don't want to confuse you, or give you the wrong information pertaining to the wrong type of amp and have it blow up as a result of confusion....But you can bridge 4 channels typically in a similar way