How to properly set the Gain/Freq on a Car Amplifier? *UPDATED* w full specs n pic...

Abhi

Diamond Member
Sep 13, 2003
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Well.. my setup first...

Here is a pic of it here ..

So ... how exactly should i set it up? Any links to guides?

p.s. I googled and found a few websites... nothing too useful ...


My setup in detail:

First... sorry for being an idiot and not posting the Amp Specs...

Second... cant build a box for the sub, this is in a sedan and i need the boot space.

Here is the whole setup.

Its a 4 Channel Blaupunkt Amp. Two channels drive the rear speakers of the car, and two channels drive a free air Pioneer Sub...

1. Head Unit Cassette Player (Old) with Sub Output (Spkr output is 45X4)

2. Tinny 4 " front speakers (cant get better ones.... no money+no space)


3. Blaupunkt MPA4 4 channel Amp
Detail Specs:
Max power into 4 ohms, 4 x 110/2 x 300 W RMS power into 4 ohms, 4 x 55 W/2 x 150 W Channels 4 / 2 Frequency responses 20 - 50,000 Hz Signal / noise ratio dB/A > 90 Variable sensitivity 0.3 - 5 V 2 ohm stability (4 channel operation) Variable high-pass filter 50 - 500 Hz (channels 1 + 2) / 50 - 250 Hz (channel 3 + 4) Variable low-pass filter 50 - 500 Hz (channel 1 + 2) / 50 - 250 Hz (channel 3 + 4)

The Amp drives on the rear parcel tray:
4. Pair of 6" X 9" Pioneer Oval speakers ( 330 Watts ) (Dont remember the model no. but they are 330 W)

5. 12" Free Air Pioneer Sub ( 500W ) (TS W303F)

Sub Woofer Specs:
Free-Air Design
500 Watts Max Music Power
160 Watts Nominal Power Handling
Frequency Response: 20-2,000Hz
Sensitivity (Efficiency): 94dB (1W/1m)
4 Ohm Rated


By the way... the system is already INSTALLED in the car. I just need to learn how to do the right frequency/gain settings....



 

Kroze

Diamond Member
Apr 9, 2001
4,052
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Originally posted by: Abhi
Well.. my setup first...

Here is a pic of it <a class=ftalternatingbarlinklarge href="http://pics.bbzzdd.com/users/Abhi/Dscn0675.jpg" target=blank>here</A> ..

Its a 4 Channel Blaupunkt Amp. Two channels drive the rear speakers of the car, and two channels drive a free air Pioneer Sub...

As you can see in the pic there are 4 dials on the front of the amp ... 2 dials control frequency, 2 control the gain.

So ... how exactly should i set it up? Any links to guides?

p.s. I googled and found a few websites... nothing too useful ...


First of all, what's the spec of your Amplifier. If you are going to drive the speakers for high and mid, i suggest the front speakers rather than the rear. As for the free-air sub. Build a box for it, it'll sound a lot better than free air.
 

Kroze

Diamond Member
Apr 9, 2001
4,052
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I'll need the spec of your Amplifier and all of your subs and speakers
 

Shockwave

Banned
Sep 16, 2000
9,059
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Dont build it a box, if its free air it'll work best in a free air application. This works best for your setup, what you need is a baffle to seperate the front wave from the rear wave. However, it may take a bit of work to do that.
Site 1
Site 2

You need to run power and ground wires first off. You'll need a battery terminal, something like this. Then, run the power wire (DONT FORGET TO FUSE!) from the battery to the trunk (Or wherever the amp will be). Then run a ground, I find grounding on a bolt for the seats to work well. We'll go from there.
 

bleeb

Lifer
Feb 3, 2000
10,868
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Give me all the specifications to your car audio equipment and your name and address.... only then can I 'help'.
 

bleeb

Lifer
Feb 3, 2000
10,868
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0
Also did you know you can get decent BASS response with very small enclosures and smaller woofers? My brother has a Pioneer 10" with that copper center and about 200 watts pumping into it. It sounds NICE.
 

Abhi

Diamond Member
Sep 13, 2003
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Originally posted by: bleeb
Give me all the specifications to your car audio equipment and your name and address.... only then can I 'help'.

i am in india :)
 

thomsbrain

Lifer
Dec 4, 2001
18,148
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set the frequency to around 120 or so, then turn up the gain until you hear it nice and clear. then turn the frequency all the way down and slowly bring it up until it's giving you the right amount of kick. anything over 80 Hz and you're asking for gross muddy boom instead of thumpy goodness. then set the gain according to your taste. it all depends on how loud you want your bass.

really, these settings are personal preferences. you shouldn't be asking for advice unless we're the only ones who will listen to it. and since YOU'RE the one who will listen to it, you should just play with it until you like it. just remember that the gain is basically the bass volume and the frequency controls the amount of boom mixed in with the thump. higher freq=more boom.
 

Abhi

Diamond Member
Sep 13, 2003
4,548
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76
Originally posted by: thomsbrain
set the frequency to around 120 or so, then turn up the gain until you hear it nice and clear. then turn the frequency all the way down and slowly bring it up until it's giving you the right amount of kick. anything over 80 Hz and you're asking for gross muddy boom instead of thumpy goodness. then set the gain according to your taste. it all depends on how loud you want your bass. really, these settings are personal preferences. you shouldn't be asking for advice unless we're the only ones who will listen to it. and since YOU'RE the one who will listen to it, you should just play with it until you like it. just remember that the gain is basically the bass volume and the frequency controls the amount of boom mixed in with the thump. higher freq=more boom.

Thanks man.... just needed the basics...

actually had the system set up to just my liking... and setting it that way took a lot of time...

but then the car went to the repairshop and they f!cked up my settings...

So gotta do it again :(
 

MikeMike

Lifer
Feb 6, 2000
45,885
66
91
wat h/u you got? does it have rca pre-outs? if so tell me wat the voltage is on them

and run ur sub up to 85 not 100. and gain around 1/2 way or so depending on voltage of pre-out

MIKE