Please help with settings

[tismo 0]

Hi everyone, I need some help tweaking my humble system lol.

I have a JVC KW AVX820

http://i139.photobucket.com/albums/q311/macuser74/The%20Bitch/DSC09965.jpg?t=1271260441

kicker 08ks6502

Component system with two woofers, two tweeters, and two crossover networks

Symmetrical 12dB/octave high-pass-12dB/octave low-pass crossover/protection network with 3-position tweeter attenuation

75 Watts RMS (150 Watts peak) power handling with 4-ohm impedance

35 Hz-21kHz frequency response

2 Kicker 07cvr124:

12-inch CompVR Subwoofer with 4-ohm impedance

Injection-molded cone with 360-degree back bracing and aluminized coating; ribbed Santoprene surround

400 Watts RMS (800 Watts peak) power handling

25-500 Hz frequency response

a Memphis 16 MC600D:

Number of Channels 5

RMS Power (4 ohms) 55 watts x 4 chan. + 100 watts x 1 chan.

RMS Power (2 ohms) 75 watts x 4 chan. + 200 watts x 1 chan.

RMS Power (1 ohm) Not Stable + 400 watts x 1 chan.

Bridged RMS Power 150 watts x 2 chan. (Chan. 1-4), Not Bridgeable (Chan. 5)

Peak Power Output 1400 watts

Min. Impedance Unbridged 2 ohms (Chan. 1 - 4), 1 ohm (Chan. 5)

Min. Impedance Bridged 4 Ohms (Chan 1 - 4), Not Bridgeable (Chan. 5)

THD @ Rated RMS Power 0.03%

Speaker Level Inputs No

Amp Preamp Outputs No

Built-in Crossover HPF(40 Hz - 6 kHz), LPF(40 Hz - 6 kHz) (Chan. 1 - 4), LPF(50 - 250 Hz), Subsonic (20 - 50 Hz) (Chan. 5)

High-Pass Crossover N/A

Low-Pass Crossover N/A

Subsonic Filter N/A

Signal-to-Noise Ratio 92 dB (Chan 1-4), 95 dB (Chan. 5)

Channel Separation N/A

Bass Boost N/A

Bass/Gain Remote N/A

Fan Cooled No

Fuse Rating 25A x 3

I really appreciate it.

[KU40 173]

What needs tweaked

[Kanaworm$ 292]

Welcome ....

[jcarter1885 995]

, gives us some more information on what all you want done.

[tismo 0]

Thank you for the welcome. What I would like is put in the optimum settings on both the memphis and JVC HU so I can get a clean sound quality .

For example I dont know if the amp gain on the headunit should off, low or high.

this is how I have the amp setup right now but there are a couple of knobs I dont know if I should adjust them or not, the sub level and

[KU40 173]

Your crossover switch for the sub channel should be on LPF, not HPF. Set the crossover at about 80 hz, but play around with it until the sub sounds the best. If your box is sealed, you can leave the subsonic either all the way down or turn it off if there is a switch for it. For the gain, just turn it up until the sub starts to distort at your maximum listening level on the head unit volume.

[tismo 0]

Your crossover switch for the sub channel should be on LPF, not HPF. Set the crossover at about 80 hz, but play around with it until the sub sounds the best. If your box is sealed, you can leave the subsonic either all the way down or turn it off if there is a switch for it. For the gain, just turn it up until the sub starts to distort at your maximum listening level on the head unit volume.

There are 2 crossover switches, which one you are referring to? the one in the 2nd pic or 3rd?

Also, Should I set the switches to flat if I have front speakers with crossovers?

Thank you.

[KU40 173]

For some reason I thought you had a 4 channel that you were bridging a couple channels to for the sub, instead of a 5 channel.

The crossovers on the amp for the mids and tweeters should be set to highpass around 80 hz or so (can play with this up or down). The passive crossovers that you got with the components likely have a highpass filter for the tweeters and a lowpass filter for the mids. However, the mids need to be bandpass filtered (lowpass at 3-4 khz in the crossover and highpass at 60-100 hz by another source, in this case the amp), so you'll need to use the highpass crossover on the amp to do that.

Not sure what the amplifier gain setting on the head unit does. Why don't you tell us what the manual says for it?

If you aren't hooking up any speakers to the rear channels of the amplifier, the gain and crossover settings don't matter.

If you are using the subwoofer preout on the head unit, make sure to set the gain for the sub with that subwoofer level on the head unit all the way up.

[tismo 0]

For some reason I thought you had a 4 channel that you were bridging a couple channels to for the sub, instead of a 5 channel.

The crossovers on the amp for the mids and tweeters should be set to highpass around 80 hz or so (can play with this up or down). The passive crossovers that you got with the components likely have a highpass filter for the tweeters and a lowpass filter for the mids. However, the mids need to be bandpass filtered (lowpass at 3-4 khz in the crossover and highpass at 60-100 hz by another source, in this case the amp), so you'll need to use the highpass crossover on the amp to do that.

Not sure what the amplifier gain setting on the head unit does. Why don't you tell us what the manual says for it?

If you aren't hooking up any speakers to the rear channels of the amplifier, the gain and crossover settings don't matter.

If you are using the subwoofer preout on the head unit, make sure to set the gain for the sub with that subwoofer level on the head unit all the way up.

That actually explains a lot. the manual says

I am just waiting for weather to clear up so I can set my gains with DMM and I should be good to go.

[KU40 173]

ok. So it only operates the head unit's internal amplifier. Since you're using the memphis amp to power all of your speakers and have none hooked up to the head unit, you can turn the amplifier gain setting to off.

[tismo 0]

ok. So it only operates the head unit's internal amplifier. Since you're using the memphis amp to power all of your speakers and have none hooked up to the head unit, you can turn the amplifier gain setting to off.

Can somebody verify my voltage findings to adjust my gains with DMM?

front stage voltage= 14.83 v

Subs voltage= 20 v

[jcarter1885 995]

Dont use a DMM, use your ears to set your gains. Play mids by themselves and listen for stressing and distortion, then do the same for tweeters and so on till you have your gains set. Set your radio no higher than 75% or your normal listening levels if under the 75% volume barrier of your max volume on your headunit. Turn your gain up till you reach desirable listening levels without stress and distortion. Basically the gain is there to match the signal preout voltage of your headunit.