Hi i have an alpine 9857 head unit with 3 sets of outputs 1 set for front 1 set for rear and 1 set for subwoofer i have 3 jl audio amps 450/4 is connected to the front and rear of the head unit the 500/1 is connected to the subwoofer output and the 300/2 is run off the 450/4 i had purchased a esq746 but it only has 2 imputs main and aux how do i get this to work
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Re: head unit connect
You will only be able to use this EQ on the front or the rear speakers. You will have to get another EQ if you think you need one. Usually, the front speakers of a car's audio system are the smallest and the rears are larger. You really do not want an EQ on the subs. If it was mine, I would hook the EQ between the head unit and the rear speakers. If you feel this does not sound right, you may need, but I doubt it very much, to get another EQ for the front speakers. Good Luck
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The "Front output" from the Pioneer deck would connect to the "Main In" on the Clarion EQ. I'm assuming that your Clarion EQ can only deal with one input, and will send the adjusted (equalized) signal out both of the outputs. The "Front output" from the Clarion EQ should go to the "Front Input" on the 4 channel amp. The "Rear output" from the Clarion EQ should go to the "Rear Input" on the 4 channel amp. The "Sub output" from the Pioneer deck would connect to the Left/Right Input on the Epicenter. The Left/Right Output on the Epicenter would need a Y-splitter for each side, so that you could connect each amp separately. One suggestion would be to use one sub amp for both subs.
This unit has a separate EQ band for the subwoofer-- you'd connect the sub-out from your CD player to the sub input on the EQ, and the sub-out from the EQ into the input on the sub amp. The "sub" slider would then adjust the sub volume. If your CD player doesn't have a sub-out, and you are just using one of the regular front/rear outputs to feed the sub amp, then the sub volume will follow the other sliders toward the left side of the unit, which is less desirable.
check the rca cables on the back to see if you might have the sub woofer cable in wrong rca spot
this is how it should be wired from your radio front output a set of rca cables go to the radio input of the eq. if you have sub out on radio it will not be used ... eq takes place of it ... turn off subout on radio ... to use eq or preamp you must have at 2 amps 1 for mids and tweets and 1 for subs to work eq right
then from the eq you have another set of rca cables comming from the front output to your mids and tweet amp and then if you dont have a second amp u wont need rear output move over to the suboutput and run a set of rca cables from eq's sub output to sub amp this is how the audio cable section should be connected if you still dont get it to work proper then then it has a electronic issue and need to warranted out if still in warranty or buy new one .... here is a link to the install manual with a wire diagram for repair shop .....http://www.poweracoustik.com/pa2006/manual%20and%20catalog/Processors/PWM-20.pdf
You are going to need the DIN plugs for the unit, on the back there are two imput jacks. The left jack is for the imput from your head unit, as far as I know, there is no other way for the EQ to accept imput except for the jack. The right one is for a digital time delay unit (rare). Coming out of the unit there are two output jacks, one is line out front, the other is line out rear. With these, there are also your power, ground, remote power, and speaker out puts. Good luck. I had one of these back in the 80's.
If the power connections wer correct and your ground was also done well the set must power on. Also check if the standby power was also connected to the switched output from the head unit.
if all these are fine then you might need to take the set out remove and check for the internal fuse or failure of some component in the power supply front end.
try to use the preset equalizer settings after which you can come back to the parametric equalizer and adjust to your own taste. no problem if you don't connect the subwoofer just make sure you set the hi-pass filter to off so that you will hear the full range to your speakers. but, I advice you to put a subwoofer. There is more dynamics to the lower freqs too. don't adjust the source level if there is no problem. take note the EQ of your head unit is a parametric equalizer. hope this helps while you read about parametric EQs.