S688A (HK) vs S677A (Top Hi-Fi) Premium Audio Differences - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

mtnova · 10-17-2010, 03:43 AM

What's the difference between S688A (HK) vs S677A (Top Hi-Fi). It looks like all the components are the same, including DSP/Amplifier, except the tweeter and tweeter grill is different. I know S688A was new for 2011 and replaces the former S677A for premium audio. I thought it was just the label on the grill but looks like the actual tweeter is different part number too (65139217910).

VP Electricity · 10-19-2010, 09:37 PM

HK IS Top HiFi, in that the Top audio system is Top HiFi from a service POV, whether it's called DSP, or h/k, or Logic 7, by us consumers.

But it's nice to hear the tweeter changed

Cozy · 12-24-2012, 07:04 AM

Thread revival but this is the only thread on the entire forum that returns a result under part number: 65139217910

I can confirm that these Harmon Kardon tweeters DO fit the pre-LCI/2010 E82. I have installed these to my 2008 135i in place of the 65136964013 Logic 7 tweeters.

I can't say I notice any difference in sound, I imagine that they are the same.

10-17-2010, 03:43 AM	#1
mtnova New Member Drives: 128i Coupe Join Date: Nov 2009 Location: SoCal Posts: 22 iTrader: (1)	S688A (HK) vs S677A (Top Hi-Fi) Premium Audio Differences What's the difference between S688A (HK) vs S677A (Top Hi-Fi). It looks like all the components are the same, including DSP/Amplifier, except the tweeter and tweeter grill is different. I know S688A was new for 2011 and replaces the former S677A for premium audio. I thought it was just the label on the grill but looks like the actual tweeter is different part number too (65139217910).
	Tweet

10-19-2010, 09:37 PM	#2
VP Electricity Brigadier General Drives: 2007 E91 328 xi Join Date: Jan 2008 Location: portland oregon Posts: 3,089 iTrader: (3)	HK IS Top HiFi, in that the Top audio system is Top HiFi from a service POV, whether it's called DSP, or h/k, or Logic 7, by us consumers. But it's nice to hear the tweeter changed __________________ musicar northwest portland or musicarnw.com BMW systems and subwoofers

12-24-2012, 07:04 AM	#3
Cozy Major Drives: E82 135i Join Date: Mar 2011 Location: Surrey, England Posts: 1,216 iTrader: (0)	Thread revival but this is the only thread on the entire forum that returns a result under part number: 65139217910 I can confirm that these Harmon Kardon tweeters DO fit the pre-LCI/2010 E82. I have installed these to my 2008 135i in place of the 65136964013 Logic 7 tweeters. I can't say I notice any difference in sound, I imagine that they are the same. __________________ BMW 135i N54 \| Black Sapphire \| M-Sport \| BMS 10mm Spacers (Rear) \| Eibach 5mm Spacers (Front) \| Gunmetal 261M 18" Wheels \| Vredestein Ultrac Sessanta 225/255 \| LCI Tails \| COBB AP Stage 1+ \| Matt Black Grilles \| BMW PE + Resonator Delete \| N55 Midpipe \| Rieger Tuning Matt Black Diffuser \| ETS FMIC

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