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BMW Harmon Kardon Aftermarket Install Tips?


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well he just bought a an alpine cde-hd137bt and wants to use the HK amp, so im still kinda clueless on how to go about this

edit: $500 budget for interior speakers

Aftermarket HU and stock HK amp......ick

You'd be better off just running the Alpine directly to the new speakers then using the HK amp(s), they're tiny.

The Alpine has unbalanced outputs and the HK input would be balanced. So you'd still need the LOC to integrate the two.

You could link the two (Alpine HU / HK amp) but you'd probly have a lowered signal level.

I wasn't impressed with my HK setup at all :bad:

I'd suggest that he invest a "little" bit more $ and get something without the factory limitations. You know that in a couple months he's going to want to upgrade :good:

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2004 BMW M3
Mechman 280A
2 - XS Power XP3000

1 - XS Power D375

500F of Maxwell SuperCaps (soon to be 1000F)
iPadMini2

Dash mounted O-scope
Audison bitOne (Remote DRC MP)
Highs Amp - PPI Art A404
Hertz HSK130 (HSK165 waiting...)
DC Audio DC9.0K
2- DC Audio XL12m2

LEGAL             - 147.3dB @ 41Hz
OUTLAW         - 150.2dB @ 45Hz

OUTLAW         - 145.7dB @ 30Hz
JUNE 2014 SOTM WINNER

2014 COLORADO PEOPLE'S CHOICE WINNER

SOTM BUILD:
http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026

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isnt the HK amp like 35rms per channel?

edit: running the headunit amp would require running new speaker wire to all 4 speakers wouldnt it?

Edited by Kranny
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isnt the HK amp like 35rms per channel?

edit: running the headunit amp would require running new speaker wire to all 4 speakers wouldnt it?

I've never found official specs but I highly doubt it.

Everything on the sub amp that I've found stated 20W so I doubt the high amp would be higher.

Didn't sound more then 20w either.

I have all my oem speakers removed, I can look at them and see if they have a power rating, that will at least give you a ballpark idea.

Yeah you'd have to run new speaker wire since the HK amps are in the trunk.

This post sent with 100% recycled electrons.
2004 BMW M3
Mechman 280A
2 - XS Power XP3000

1 - XS Power D375

500F of Maxwell SuperCaps (soon to be 1000F)
iPadMini2

Dash mounted O-scope
Audison bitOne (Remote DRC MP)
Highs Amp - PPI Art A404
Hertz HSK130 (HSK165 waiting...)
DC Audio DC9.0K
2- DC Audio XL12m2

LEGAL             - 147.3dB @ 41Hz
OUTLAW         - 150.2dB @ 45Hz

OUTLAW         - 145.7dB @ 30Hz
JUNE 2014 SOTM WINNER

2014 COLORADO PEOPLE'S CHOICE WINNER

SOTM BUILD:
http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026

sig-sized6_zps0265e669.png

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