Add HK Tweeters

FredrikM · 04-19-2023, 04:52 AM

Got myself a pair of Harman Kardon tweeters with covers. Since i don't have the HK system from factory, only the cheapest Professional system without any tweeters i'll guess i have to do some splicing to connect them.

Am i correct that the door speakers is 4 Ohm? I haven't found out the impedance for the tweeters so i'm wondering if it is better to connect the tweeters in serial or in parallell with the mid base?

Suprgnat · 04-19-2023, 04:08 PM

Quote:

Originally Posted by FredrikM

Got myself a pair of Harman Kardon tweeters with covers. Since i don't have the HK system from factory, only the cheapest Professional system without any tweeters i'll guess i have to do some splicing to connect them.

Am i correct that the door speakers is 4 Ohm? I haven't found out the impedance for the tweeters so i'm wondering if it is better to connect the tweeters in serial or in parallell with the mid base?

IIRC 4Ω is correct. RealOEM shows the mids to be P/N 65139143232. The photos available show that that driver has the extra socket to plug the tweeter directly (parallel) into the mid, so hopefully no splicing. The tweeter should already have a filter cap.

FredrikM · 04-27-2023, 09:14 AM

Quote:

Originally Posted by Suprgnat

IIRC 4Ω is correct...

Thank you very much, will be much easier than i thought then. Hopefully my tweeters will arrive very soon.

N55e82Simon · 05-12-2023, 10:47 PM

Can you update after you do it? I would like to do something similar and would love to hear the basic run down after you tackle it. Tia.

scottgze · 06-10-2023, 05:45 AM

+1 on an update, this sounds like a good mod.

E82_MDubb · 09-26-2023, 03:40 PM

Hi FredrikM, did you ever get those installed? I purchased a set of L7 speakers to replace my base system (will add aftermarket amps to drive the speakers), and am curious on the impedance of the individual speakers. Based on the documentation I've seen, the mids and highs are at 2 ohms, and connected in parallel, which means all the speakers are 4 ohms. I'm hoping someone can confirm.

Anyways, curious about how everything worked out.

04-19-2023, 04:52 AM	#1
FredrikM Private 45 Rep 60 Posts Drives: Jet Black 125iC (272 HP) Join Date: Feb 2014 Location: Sweden iTrader: (0)	Add HK Tweeters Got myself a pair of Harman Kardon tweeters with covers. Since i don't have the HK system from factory, only the cheapest Professional system without any tweeters i'll guess i have to do some splicing to connect them. Am i correct that the door speakers is 4 Ohm? I haven't found out the impedance for the tweeters so i'm wondering if it is better to connect the tweeters in serial or in parallell with the mid base? __________________ Mods: Black kidneys & side markers, blackline rear lights, 2008 side mirrors, 19" VMR 701, remapped, 135i instrument cluster, X3 Steering wheel trim, Z4M gear knob
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05-12-2023, 10:47 PM	#4
N55e82Simon Private First Class 151 Rep 116 Posts Drives: BMW 135i Join Date: May 2023 Location: SoCal iTrader: (0) Garage List 2011 bmw 135i [9.33]	Can you update after you do it? I would like to do something similar and would love to hear the basic run down after you tackle it. Tia.
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06-10-2023, 05:45 AM	#5
scottgze New Member 0 Rep 9 Posts Drives: BMW 135ci, BMW 520d Join Date: Mar 2022 Location: Adelaide, Australia iTrader: (0)	+1 on an update, this sounds like a good mod.
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09-26-2023, 03:40 PM	#6
E82_MDubb New Member 0 Rep 6 Posts Drives: 2011 135i Join Date: Mar 2022 Location: SF Bay iTrader: (0)	Hi FredrikM, did you ever get those installed? I purchased a set of L7 speakers to replace my base system (will add aftermarket amps to drive the speakers), and am curious on the impedance of the individual speakers. Based on the documentation I've seen, the mids and highs are at 2 ohms, and connected in parallel, which means all the speakers are 4 ohms. I'm hoping someone can confirm. Anyways, curious about how everything worked out.
	Appreciate 0 Quote