Does a more powerful solution with bass capability exist? The 4320 seems to be 4 channels only :(

Actually head unit in Golf 8 has decent amp. Same head unit in Octavia 4, and changing speakers to Focal (IS VW 165 in the front, and IS VW 155 in the back) brought major improvement in SQ. Of course additional amp brought another improvement, but it wasn't so big this time.

Will the IY-AC cable work for a VW? Arteon 2019

@@kristianslot1272 I think personally to modify my setup, suppress rear sound or wire it back on the stock radio, add an active spare wheel sub from esx and add a dsp before impulse, from impulse use 4 channels to drive tweeters and midbass separately. Hope it'll work cause I feel like I need to tune this kit very much, and my RTA measurements gave me some bumps everywhere on the spectrum.

@@szczeslaw did you experience any crackling in your tweeters before installing the amp? I have IS 155 in the front of my Golf 8 and the focal tweeters seem to be crackling a lot when i turn up the bass/mids or my volume. Not sure if the solution is to buy the amp or not?

I've installed it in my trunk and it gets quite hot after some good pounding haha. But it never shut off or something.

Hello, please contact directly your local dealer via this link : store.focal.com/ They are your main contact and will be able to advise. Kind regards Focal

Did you figure out if you needed a different iso harness?

I finally cut the car's speakers output and soldered new wires according to what I needed and how long I needed them... Also, whatever else was going to cost about 70$ more... So I did not choose to buy any additional harnesses...

If you want a nice sub you gotta power it up. Dont think the impulse has enough juice to power a sub. But bomba one is active so all good it already has 300w of power.

Hi, Please contact your local dealer who is your main contact and will be able to advise : store.focal.com Kind regards Focal

I'd like to know the same answer

Hi, Please contact your local dealer via this link: store.focal.com/en/store-locator They are your main contact and will be able to advise for the installation in your car. Many thanks Focal

You can get a quad lock extension and just cut the wires, to the amp and back from the amp

Same question !

Car audio installer and Focal dealer here, No the factory systems fuse is to small (around 10-15 amps on average) and the fuse on the Impulse 4.320 is 25 amps, it will work but will blow the factory fuse when the system is turned up as it could potentially pull 10-15 amps for the factory stereo + 25 amps for the Impulse amp, they want it to look easy to DIY when in reality it needs a new power wire run from the battery like all other after market amps, the only exception to this is when it is replacing a factory amp that has a dedicated fuse (30 amps or so) and thick wires to power it.

What if using just the amp (no sub)? Thanks

@@GETS0MENUTS although your comment is 95% true, I'd also argue that the original radio won't be pulling the full 10-15A anymore as the amplifier isn't putting out true watts anymore. Especially if the Focal amp is connected through low level inputs instead of highs, the OE amp will take far less current. Still, I'd recommend upgrading the OE 15A fuse to a 20A, and see where that takes you. I don't think the Focal amp can actually deliver 220-320W of power (it says 4x 55W or 2x 160W) at 90% (that gives 250-350W input power) efficiency. Realistically you're looking at half that in true power, so maybe 160W peak absorbed, which is about 10-15A, peak. With the OE system now "only" using about 5A peak, and the Focal amp at 10-15A at full blast, you're looking at 15-20A tops. The original wiring can handle that, so I'd just opt for upping the fuse a little bit.

@@muizenissen how do I change the fuse?

Hi, Please contact your local dealer in your area via this link: store.focal.com/#!country=IT&category=5 They are your main contact and will be able to help. Kind regards Focal

i see that the amp has 4 channels, so theoretically it can power 2 subs and two front or back speakers.

that harness provides amplification to the front speakers and the two subwoofers. The back speakers run on the factory head unit.

@@writetobill2 In a BMW F10 the front door speakers and the subs are parallel connected so i guess that i don't have to run seperate speaker cables to the subs but they are connected already with the harness?

@@writetobill2 How is this amp working off the 15amp infotainment power along with the infotainment. That's super confusing because the infotainment is already amplifying the signal

@@catinthehat5140 the Focal wiring harness intercepts the signal as it leaves the head unit in the dash, that signal goes to the high level inputs to the amplifier, which inputs are designed to accommodate the signal voltage output of the head unit. The Focal amplifier feeds amplified signal back to the front speakers and bypasses the rear speakers so that they continue to run from the head unit. Channels 3and 4 of the Focal amplifier run either a single subwoofer (typically PSB200) or dual subwoofers (typically ISUB TWIN). The end result is 'front stage, rear fill' which is a standard setup in car and home hifi systems. The amplifier requires B+ power and an earth connection but the current draw is so low that this can be sourced under the dash somewhere, without having to run battery wire out through the firewall. You can usually tap into the B+ to the factory head unit and change the fuse to 20 amps, that will cover the Focal amp and original head unit which has been relieved of most of its amplification output.