mrcgibb

Hi i have a 2001 saab 95 , and if possible i would like to use the stck amp to connect my car pc to it rather than fitting new amps etc , the problem is the saam amp is either a pioneer or harmon kardon , and according to the info it uses a pro audio signal from head unit to amp like this



The low level signal between the head unit and the amplifier is not the common single ended (signal & ground) used in ordinary consumer audio, instead it is a balanced (signal+ & signal-) used in pro audio.

is there anyway of connecting my audio from my pc to this sort of amp? thanks

here is the amp connection diagrams , i am totally lost , do i need a sound card rather than using the onborad sound card ? any help is greatly app. , also i take it the line in connections are the balanced ones?


AS2/AS3/ES52/ES53 AMPLIFIER CONNECTOR Function Direction Pin # Colour/color
Power
Power supply in 1 RED
Ground - 21 BLACK
Power supply in 2 RED
Ground - 22 BLACK
Line Level Inputs
Line in right front + in 3 red
Line in right front - in 23 blue
Line in left front + in 4 blue/white
Line in left front - in 24 red/white
Line in right rear + in 5 gray
Line in right rear - in 25 brown/red
Line in left rear + in 6 yellow/white
Line in left rear - in 26 orange/white
Speaker Outputs
Speaker, subwoofer, right - (AS3) out 7 black/white
Speaker, subwoofer, right + (AS3) out 27 black/green
Speaker, subwoofer, left - (AS3) out 8 gray
Speaker, subwoofer, left + (AS3) out 28 brown/red
Control Signals
No connection - 9 -
No connection - 29 -
No connection - 10 -
No connection - 30 -
Mute control in 11 black/white
No connection - 31 -
Remote on control for
amplifier (also antenna) in 12 green
No connection - 32 -
No connection - 13 -
Speaker Outputs
Speaker, rear door, right - out 33 blue/white
Speaker, rear door, right + out 14 red/white
Speaker, rear door, left - out 34 green/white
Speaker, rear door, left + out 15 brown/white
Speaker, front door, passenger - out 35 green
Speaker, front door, passenger + out 16 brown
Speaker, front door, driver - out 36 red
Speaker, front door, driver + out 17 blue
Speaker, front panel, right - out 37 gray
Speaker, front panel, right + out 18 brown/red
Speaker, front panel, left - out 38 brown
Speaker, front panel, left + out 19 brown/white
Speaker, front panel, center - out 39 yellow/white
Speaker, front panel, center + out 20 orange/white

FusionFanatic

where did you read that it uses "pro audio" / balanced inputs?

balanced audio requires balanced cables (which have a shield wire surrounding two twisted signal wires). there are no shield wires in your harness, just a standard (+) and (-) for each input. if your harness is just individual wires all bunched up / wrapped up together (not in twisted pairs) then it is not balanced.

also, you can use onboard sound if you want, but a dedicated sound card will offer better sound quality.

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current carPC setup
previous carPC setup

mrcgibb

this is taken from info



The low level signal between the head unit and the amplifier is not the common single ended (signal & ground) used in ordinary consumer audio, instead it is a balanced (signal+ & signal-) used in pro audio. Attaching the new amplifier here requires an adapter.

here is link

http://www.mitt-eget.com/saab/faq_au...ml#upgrade_as2

Woofnstuff

technically its balanced, as the earth isnt connected to ground / shield, and other things too.

however to make use of that you would need to be supplying a balanced signal to the amps . if you dont supply a balanced or clean signal you may get an earth loop, so as they say there you will need to isolate it

just googled this its for home studio but might help explain things a bit better
http://www.tweakheadz.com/all_about_cables.htm

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mrcgibb

so i think i will just get a new amp , is jl amps ok ?