I tried just hooking up one sub at a time and still no output. Gain is set between 2/3 and 3/4 way up on amp. I got some new alpine 6x9's and a conveter box that takes the L and R speaker wires and turns them into RCA cables. I ran those to my first amp to power my 6x9's. They sound GREAT. I unplugged those RCA cables from the first amp and hooked them up to my Sub amp and it works, but not a lot of bass control that way. There is a little signal coming out of Sub output of HU. However, there is no difference with sub channel turned on or off. I'm at the point where i believe the Sub output on HU might be bad. That sucks though. Any other help would be great.
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Yes you can. cut the left speaker lead and splice a wire from it to your sub woofer. If its a powered woofer you may have too much gain going in, You don't say what kind of sub it is or weather or not its a "powered" unit. If its a powered woofer (built in amp) you should take the output directly from the computer output (buy a 1/8 in male to 2 1/8 in female connector, send one output to your original speakers and the left side of the second output to the sub woofer. you can usually adjust the level of the sub (if powered) with a control on the unit. if you need more help, contact me but please tell me more about what you have.
There are many sub woofers out there that would be suitable for your amplifier. Just stick to the quality brands such as Elemental Designs, JL Audio, Alpine(type X), MA Audio, RE Audio and there are many more. Make sure the minimum power handling for each sub woofer is 600 WATT RMS.
Another thing. The gain control on the amplifier is not a volume. It is there to match the output voltage (V) of your head unit to the input voltage of the amplifier. For example, if your head unit RCA output is (1.2V, 2V, 4V or even 5V) then match that on the amplifiers gain to be the same. The higher the V number is on your head unit, the stronger the signal is that is being sent to the amplifier. For example,
If your have a 4V head unit and the gain control on your amplifier is set to 1.2V the you are sending almost 4 times the amount of signal strength to your amplifier. This causes distortion and distortion causes speakers and sub woofers to blow.
I hope you understand the concept.
IMPORTANT: This is a powerful amplifier, a 4 Gauge or 2 Gauge power cable MUST be used. Less than 4 Gauge, will cause over heating of both the cables and the amplifier. YOU DON'T WANT THAT.
If you still have doubts and need more assistance, let me know.
You do not say what subs you are connecting or what wiring configuration you are using. But there should be no problem if the amp is powering up normally. I'd check the gain and crossover settings to make sure they match the subs.
Having 2 +'s and 2 -'s is just a convenience for connecting more than one sub to the amp. If you have just one sub, connect to either of the positives and either of the negatives (they're connected internally). If you have 2 subs, you can run separate wires to each sub or you can wire the subs together and then run just one positive and negative to the amp.
+ output from amp to + input of 4 ohm to + input of 8 ohm AND - output from amp to - input of 4 ohm to - input of 8 ohm is a parallel circuit = 2.66 ohm impedance load for amp
+ output from amp to + on 4 ohm - on 4 ohm to + on 8 ohm - on 8 ohm to - of power amp is a series circuit = 12 ohm impedance load for amp. Clear as mud??
Clear as mud?
Follow these steps to connect a powered sub woofer to your receiver:
You typically have two options when connecting a powered sub woofer.
Input (1) on the rear of the sub woofer would be used when connecting
the sub woofer to the receiver using speaker wires. You would then
connect the main speakers to the opposite end, or output or the sub
woofer to the main speakers. Option (2) would be using RCA line level
output jacks, input (2) on the rear panel of the sub woofer directly to
the single sub woofer output on the back of an AV receiver.
the connections to the amp seem to be all wrong .check the wiring again.Does your deck have a seperate sub woofer output ?If it does , just connect one sub, i repeat, just one sub,and see the output.
check the GAIN control on the amp.it should be 2/3rds of the max volume of the cd player.check it is not zero!
Set the amp to the L.P.F. position.
bye .happy listening.
Enter into the Audio Setup mode(press and hold volume button for at least 1 second). Next, repeatedly push the volume button until the display shows "2 ZONE". Make sure this feature is turned off. Hold the volume button again for at least 1 second to leave Audio Setup mode.
Now you need to make sure the Subwoofer Output is turned on. Do this by holding down(AM position) on the control knob(toggle stick) for at least 1 second. Each time the button is pressed, the Subwoofer Output is turned ON/OFF. the display should show "SW ON".
Next, you can go into Audio Control mode(press but do not hold volume button). Keep pressing on the volume knob until "Sub-WLevel" is displayed. Here you can adjust the amount of gain for the Subwoofer ranging from -15 to +15.