My new amplifier upgrade

[GreyM340i]

So the signal from the headunit to the amp is a powered signal? In other words, you're not using pre-amp signal from the headunit?

I have the amplified Hi-Fi system so might be different if it’s the HK however yes I just plugged the Sony head unit right to the factory harness and then plugged the Match amp into the factory hardness that my original amp used to plug into.

[I M Legend]

Not sure it would make a difference from what I’m using now. I recently installed a new Sony double din. It’s using the factory wires and harness. I just ran RCA cables from the sub pre out for the Audison powered subwoofer.

So the signal from the headunit to the amp is a powered signal? In other words, you're not using pre-amp signal from the headunit?

[GreyM340i]

Anyone use the MATCH BMW amp with an AVIN unit? If yes, did you use preamps? Curious what set up you're using.

Not sure it would make a difference from what I’m using now. I recently installed a new Sony double din. It’s using the factory wires and harness. I just ran RCA cables from the sub pre out for the Audison powered subwoofer.

[I M Legend]

Anyone use the MATCH BMW amp with an AVIN unit? If yes, did you use preamps? Curious what set up you're using.

[GreyM340i]

So is the general consensus that there is nothing for us h/k guys out there to upgrade with?

Seams like not plug and play. Best would be a JL 6 ch amp and wire into the factory harness.

[YYC ///M3]

So is the general consensus that there is nothing for us h/k guys out there to upgrade with?

[Tbonem3]

Maybe so (and yes I think that is correct). But what difference does it make if the replacement amp can drive the impedance and is fully tuneable?

Because the speakers' impedance will determine crossover point and even phase shift iirc. If you're powering each driver individually (individual amp channel) with active or passive crossover, then it won't matter and you'll just have to tune by ear and adjust the channel's gains to match the volume/output of drivers with different nominal impedance. If they're on the same channel, like the factory 2" mid and 1" tweet (maybe it's 3/4"), then impedance will affect frequencies iirc.

Drivers with different resistance are chosen as a way of tuning I believe. And none of us are going to tune better than Harmon/jbl employees.

Perhaps one driver might have lower resistance, but has lower sensitivity so it's output could be same as a driver with greater resistance, but also greater sensitivity. I'm not 100% sure, I never got that deep into car stereo.

Personally, stick with OE setup or go full custom imo.

[Shonky]

As far as I am aware, the HK / non-HK have different speaker impedance's but maybe I'm missing something!

Maybe so (and yes I think that is correct). But what difference does it make if the replacement amp can drive the impedance and is fully tuneable?

[EnzoAtMonza]

From what I remember the hk were a mix of 2,3 and 4 ohm and the non are 8 ohm. If this is true, been a while, then then the Audiotec Fischer should be better suited to the HK being a 4 ohm amp..
I have a pp82dsp 8 channel amp out of a f10 5 series with hifi and it appears to share a harness with the e46. I don't have my car with me but bought a hk amp pigtail to trace it out sofar it seems like it should work, not pnp. Bad pics attached for reference.

[GreyM340i]

As far as I am aware, the HK / non-HK have different speaker impedance's but maybe I'm missing something!

I’ve also heard this.

[t3ddftw]

Why would you do this? You're replacing the amp with something with a DSP and full eq across all the channels. Just tune the amp properly.

As far as I am aware, the HK / non-HK have different speaker impedance's but maybe I'm missing something!

[Shonky]

If you have HK, you could still run this amp if you're willing to replace all the speakers at the same time, with say, the BavSounds speakers for non-HK cars.

Why would you do this? You're replacing the amp with something with a DSP and full eq across all the channels. Just tune the amp properly.

[t3ddftw]

How would it sound if you use this amp with HK?

Likely the impedance would be unmatched and thus it won't perform well. I don't know enough about this amp to say with 100% certainty, though.

[benzthis]

How would it sound if you use this amp with HK?

[t3ddftw]

...but is the wiring plug and play? or does this make it so?

Yes, it is. I went from non-HK to HK Amp with BavSound speakers and it was almost fully plug and play. I had to wire in TAA (speed sensor input) and the Spatial Sound button from the control stack. The only caveat is that I did this on a Touring, so I didn't have the sub box to deal with.