Audio setup help - amplifier and headunit

[k05vzcommodore]

Hey guys,

having a bit of difficulty deciding on my audio setup

- i already have a kicker amp with twin 12'' kicker subs and am buying 6 inch and 6x9 inch alpine type r speakers and wondering what amp i will need to amp the four speakers. I understand i could run the speakers off a headunit but want the better quality from amping all speakers

- they 6x9 grooves in the back of the car (not back doors disabling these speakers) will need to be cutout, has anyone cut these and know what can cut it - will a box cutter be fine or is it hard material

- also wondering if the stock headunit in my 05 vz commodore can have both amps connected to it/do i connect one amp, then the other amp into that amp so all sound/electrics are connected


sorry dont know too much about audio but seems all my mates know a bit but not enough to tell me exactly what i need to do

[juzzyx]

Hi,

I can't believe no ones replied yet.

Ok, you definitely want to get an aftermarket headunit with 2 patch out cables (4 rcas going to amps in total) I would recommend the sony CDX-GT500U. I know that auto barn sell a wiring harness which makes it easy to install as you dont have to cut into the factory harness. They also sell the thing which makes your stering wheel controls work.

With the patch cables, plug the rear out/subwoofer patch cable to your kicker amp.

Now with the speaker amp for your type R.. I have 2 type R splits in the front and 2 type S splits in the rear. The amp I use is fusion CA-AM41200 4 channel, It is perfectly matched to the alpine type R's with 110rms at 4ohms to each speaker. I paid $350 at Car audio excellence for this amp about a year ago and its very good quality never had a problem.

After you hook all that up you will want to split the front out rcas and plug them into the fusion amp (front and rear input).

You will also want to get a capacitor for your kicker amp 1.2 farad or 1.0 farad will be fine.

When you hook all this up your system will be crazy loud. I have roughly the same setup, the kicker comp subwoofers are awsome and sound insane with the alpine speakers I guarantee you wont be able to play them at full blast for at least a few weeks.

Good luck with your system, I'm happy to answer any questions you have.

[juzzyx]

Oh yea I forgot to add Dont get the 6x9 type R's, Just get 2 sets of type R splits. You also want to set the highpass filter on the sony headunit to 120hz and the low pass filter to 80hz.

If you can find a shop that does alpine and fusion get it all from them, they should do a mad discount as you will be getting over $600 worth of gear.

[StoneX]

Set the crossovers to the same frequency or slighty apart. 40Hz (80 & 120) is too much of a gap. Generally, I set them both to 80Hz, if I want to turn the system up louder than it can handle at 80Hz, I bump them both up to 100Hz ut that's very rare.

[juzzyx]

both at 80Hz sounds good. But if you play your system loud I think the type Rs sound like there giving to much bass (with Hpf set to 80Hz) and they are restricted by that so they can't go louder.

I use to have my high pass filter at 160Hz. At 160Hz the speakers produce almost not bass at all (no punch) when you play it at max volume. With the type R's your ears will hurt way before they distort.

I personally don't think 80 -120 gap is to big, my system sounds mad with this.

Anyways k05vscommodre let us know what your doing.

[one_and_only2004]

I'll agree with most of it, but the capacitor is not needed if you run the correct sized cable.

[MAG00]

Dodgey advice is dodgey, getting a good name for yourself juzzyx.

You don't need an aftermarket headunit, if you want to keep the stock headunit you can use line-out converters or get Phreddy to do an RCA mod, so the headunit has RCA outputs.

You DO NOT NEED A CAPACITOR.

You should be able to cut the 6x9s with a good stanley knife.

[StoneX]

both at 80Hz sounds good. But if you play your system loud I think the type Rs sound like there giving to much bass (with Hpf set to 80Hz) and they are restricted by that so they can't go louder.

I use to have my high pass filter at 160Hz. At 160Hz the speakers produce almost not bass at all (no punch) when you play it at max volume. With the type R's your ears will hurt way before they distort.

I personally don't think 80 -120 gap is to big, my system sounds mad with this.

Anyways k05vscommodre let us know what your doing.

Yeah, but you've made it clear over the past few days that you don't really know correct information about car audio. This post proved it even more... 160Hz high pass for speakers, so what does the sub play up to? Anything above 100Hz becomes directional and drags your sound stage back. If you leave it at 80Hz, what plays from 80Hz up to 160Hz? Or are you happy to just lose that part of your music?