Finished my amp install

[Gstylez]

hey guys finally got my custom box done.. Alpine PDX600.1 and a alpine type R 12".
ill have pics up tomorrow when im at work..
have a question for those who have actually installed amp and woofer combo in the 8th gen..
i know the factory radio is made where if u turn up the vol it cuts out the bass..
is there something i can do to stop this or make it better?
i have a bass knob but i still think that the factory radio is holding back what my sound should actually be.

[Demonik]

mine is fine, doesnt "cut" out at all

[LateNites]

I am ready to see those pics tomorrow

[Gstylez]

it still jams.. but i know for a fact when i turn it up high... the subs dont go higher.. know what i mean?
like it lvls out at a certain vol... so i would have to crank the bass knob up higher to get more bass... but when i lower the vol on the radio i can hear the bass really loud.

[thesteve151]

how did you hook up the input for the amp?

[Gstylez]

put in a LOC (stepdown) to convert the signal to rca.. used the factory subwoofer wire there. gray and blue i think.

[Demonik]

ah thats why then...i dont have the premium audio so that is why i dont have that problem

[Gstylez]

im wondering if i catch the rear speaker wires instead of the sub would that make the difference?

[ZedsDead]

G - you are exactly right. It is called DSP (Digital Signal Processing) and it changes the EQ curve at each volume location. As you turn the volume up, it starts to cut the bass so to protect the speakers. It also changes mids and highs to make the relatively weak factory speakers sound good.

There are several products made to eliminate DSP from factory systems:

JL Audio Cleansweep
Alpine PXE-H650
Rockford Fosgate 3Sixty

All 3 will take speaker level inputs, eliminate DSP, and give you RCA output for your amp(s). In the case of the Cleansweep, this is all that it does and it does an awesome job... giving you strong 8volt output for the amps.

The other systems include more features like EQ capabilities, USB interfaces, Sound staging, etc. They don't give you as clean or strong of an output but make up for it with features.

hope this helps.

[Gstylez]

thx alot zed... so even if i used the rear channel outputs it will still sound the same right?

[ZedsDead]

Yes. If anything, I would expect the DSP effect to be more dramatic on the rear speakers... when compared to the subwoofer channel.

[jblaust]

I have hi/low adpaters on my stock head unit and a full aftermarket system. They by-passed my factory amp and I still have full subwoofer out controls from the head unit with no issues from the ANC. My subs dont level out at any specific volume. No major issues with my system.

[jblaust]

People have been disconnecting the mic above the rearview mirror and there is another one behind the drivers head in the side panel that trigger the ANC issues. This is what I read anyways...I didnt have to do this though in my car. I didnt do the install so Im not sure what they did to avoid this for me.

[Gstylez]

i disconnected the anc... thats not the problem i have.. just the stupid dsp problem. might have to look into getting that cleansweep.

[Gstylez]

here are the pics as promised.. the quality isnt great bc i used my phone to take the pics.

went with one sub bc i wanted to still have trunk space.. our box builder did a really good job bc this 1 10" type r slams!

[Gstylez]

ill take pics of the back of the box once we get a panel to flush out the amp.

[421]

looks goode, I bet that thing pounds, I like where you mounted the bass knob

[Gstylez]

thx 421.. yeah it does pound.. now i have to save up to get the jl cleansweep.. other than that its slamming.. oh yeah the plastic rear deck rattle is killing me. anyone have suggestion? im thinking about taking it back out and dynamat it

[dash242]

Nice clean finished look.

[Gstylez]

thx dash

[Gstylez]

just got my jl cleansweep today.. will be installing it at work when it's slow.. ill let u know how it goes and sound.

[dralex200]

Can you private message me the dimensions of the back face plate where the sub is mounted? thanks

[JamieJam1AIM]

hey guys finally got my custom box done.. Alpine PDX600.1 and a alpine type R 12".
ill have pics up tomorrow when im at work..
have a question for those who have actually installed amp and woofer combo in the 8th gen..
i know the factory radio is made where if u turn up the vol it cuts out the bass..
is there something i can do to stop this or make it better?
i have a bass knob but i still think that the factory radio is holding back what my sound should actually be.

JL clean sweep It flat lines the frequencies and equalizes it to taste then you add the crossover points the radio turns down the sub bass and midbass to protect overmodulation to the speakers ( keeps them from blowing... your option like I said is the JL clean sweep...

[skeleto]

can you take a pic of where u pulled the power line through the firewall?

[DevinKato]

can you take a pic of where u pulled the power line through the firewall?

I second this request! :)

[Kmart925]

oh yeah the plastic rear deck rattle is killing me. anyone have suggestion?

i'd like to know as well. doesn't dynamat absorb soundwaves? what actually reduces rattling...something that adds weight?:dunno: