Installing amplifier 4 channel + 2-way kit + Sub

[Valentin98]

Hi everyone,

I'm installing a 4-channel HCP4 amplifier, Focal ISU 200 kit, and a 275W RMS JBL subwoofer on my Leon 5F Xcellence (10/2017), and I have a few questions.

I'll get the signal through the high-level jack, connecting it to the front speaker cables (pins 9-10 and 13-14 as pictured).

Does this mean the tweeters won't be amplified since they're on pins 2-3 and 6-7? Could this cause problems?

Is there any coding I need to do after installation?

Thanks for your replies.

 

[East Yorkshire Retrofits]

Your infotainment system is outputting 6 channels not 4

If you have Seat Sound then the channels are
Front left high & low
Front right high & low
Rear left high & low
Rear right high & low
Subwoofer
Centre speaker

If you don't have Seat Sound then the channels are
Front left high
Front left low
Front right high
Front right low
Rear left high & low
Rear light high and low


If you don't have Seat Sound you could configure the infotainment unit as if you do, this would combine all the speakers onto 4 channels and give you a dedicated subwoofer output too (you could add a 1 channel amp for this in the future)

 

[Valentin98]

Thanks for your reply. Yes, I read that my unit has 6 channels (i don't have Seat Sound).

I'd like to amplify only the front speakers with channels 1 and 2 of the amplifier and the subwoofer with channels 3 and 4, so I'll leave the rear speakers connected to the factory radio.

Do you think it's possible? How should I connect to the Quadlock? I was thinking of taking the high-level signal from the front woofer speaker cables (pins 9-10 and 13-14) and running them to the amplifier. Then, reconnect the woofer and sub cables from the amplifier outputs.

 

[SuperV8]

Thanks for your reply. Yes, I read that my unit has 6 channels (i don't have Seat Sound).

I'd like to amplify only the front speakers with channels 1 and 2 of the amplifier and the subwoofer with channels 3 and 4, so I'll leave the rear speakers connected to the factory radio.

Do you think it's possible? How should I connect to the Quadlock? I was thinking of taking the high-level signal from the front woofer speaker cables (pins 9-10 and 13-14) and running them to the amplifier. Then, reconnect the woofer and sub cables from the amplifier outputs.

I would use a quad lock extension cable, so you can cut and splice this without having to cut and splice your car wiring harness.
example:

For the front - cut the front speaker wire in the extension - (assuming your amp has hi level inputs?) run the cable from the headunit to your amp, and then from your amp - back into the wire so it goes to your door.

 

[Valentin98]

Io userei un cavo di prolunga Quad Lock, così puoi tagliarlo e unirlo senza dover tagliare e unire il cablaggio dell'auto.
esempio:
View attachment 52035

Per la parte anteriore, taglia il filo dell'altoparlante anteriore nella prolunga (supponendo che il tuo amplificatore abbia ingressi ad alto livello?), fai passare il cavo dall'unità principale all'amplificatore e poi dall'amplificatore di nuovo nel filo in modo che arrivi alla portiera.

Thanks, that's exactly what I'm doing. I got an extension cord and am connecting the amplifier to the front speaker wires. I'll post some photos as soon as I'm done!

 

[SuperV8]

Thanks, that's exactly what I'm doing. I got an extension cord and am connecting the amplifier to the front speaker wires. I'll post some photos as soon as I'm done!

Cool, yes please share photos when done.
I did this back in the day, nice simple/reversible way to connect to the door speakers, just means a few runs of cable up and down to hide under the carpet - assuming you amp will be in the boot?.