KLH 6 question

-=Zepplock=- · 5th March 2005, 07:57 AM

I have a pair of original KLH6 speakers.
I power them with a sansui au-707 amp (2x100w) in a fairly small room.
I really like the sound but thay lack the high freqs (as I think). I listen to 70'th rock bands and live recordings.

So the question is what to do?
I was thinking about changing the tweeter maybe.
Or can there be a problem in crossover?

Anyway I'd appreciate any advice.

p.s. I'm capable of changing the drivers though I never did it before.

SY · 5th March 2005, 12:19 PM

First question: are the speakers in stock form worth something in collector value? If so, don't touch 'em, go directly to Ebay and use the proceeds to fund your next speaker.

Otherwise, I'd start simple and replace the no-doubt-rotting capacitors in the crossover and see if that fixes the problem before embarking on major redesign and surgery.

-=Zepplock=- · 6th March 2005, 06:45 AM

Quote:

Originally posted by SY
First question: are the speakers in stock form worth something in collector value? If so, don't touch 'em, go directly to Ebay and use the proceeds to fund your next speaker.

Otherwise, I'd start simple and replace the no-doubt-rotting capacitors in the crossover and see if that fixes the problem before embarking on major redesign and surgery.

1. That speakers are in excellent condition and are $50-$100 on ebay. the thing is that I like them and they are give me good memories ;-) So I'd rather leave them for mysefl.

2. Some place in Internet mentioned that thease speakers have oil-based capacitors which are very good and don't loose the quality as fast as regular capacitors. But still that should be double checked.

SY · 6th March 2005, 11:44 AM

I probably wouldn't fool around with oil capacitors in this application (they're fashion accessories)- I'd probably start by swapping out for the same type of caps originally in there and see how that works, then (cautiously) swap for something like a decent polypropylene. I say "cautiously" because speakers voiced for one type of cap will often sound different but not better with another type. And the cost of doing this stepwise is minimal, so why not?

-=Zepplock=- · 6th March 2005, 07:22 PM

So if the capacitors are oil-based - which ones should I replace first?
Thank you.

SY · 6th March 2005, 07:30 PM

IIRC, the 6 had wax paper caps. Replace 'em all, especially the ones in the tweeter feed.

-=Zepplock=- · 7th March 2005, 06:36 PM

Nice, thank you for the information.

I'll do it as soon as I figure out how to remove the cloth on the speakers

-=Zepplock=- · 10th March 2005, 04:51 PM

Meanwhile replaced the leaking output caps on the amp - didn't help the highs.

Bill Fitzpatrick · 10th March 2005, 05:29 PM

It would be my guess that these speakers didn't have particularly good high frequency response to begin with so you wind up diddling with caps to fix a problem that doesn't exist.

richie00boy · 10th March 2005, 05:32 PM

Build a nice little

tone control

5th March 2005, 07:57 AM	#1
-=Zepplock=- diyAudio Member Join Date: Mar 2005 Location: Sunnyvale, CA	KLH 6 question I have a pair of original KLH6 speakers. I power them with a sansui au-707 amp (2x100w) in a fairly small room. I really like the sound but thay lack the high freqs (as I think). I listen to 70'th rock bands and live recordings. So the question is what to do? I was thinking about changing the tweeter maybe. Or can there be a problem in crossover? Anyway I'd appreciate any advice. p.s. I'm capable of changing the drivers though I never did it before. __________________ Led Zeppelin Forever Make Love Not War

5th March 2005, 12:19 PM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	First question: are the speakers in stock form worth something in collector value? If so, don't touch 'em, go directly to Ebay and use the proceeds to fund your next speaker. Otherwise, I'd start simple and replace the no-doubt-rotting capacitors in the crossover and see if that fixes the problem before embarking on major redesign and surgery. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

6th March 2005, 11:44 AM	#4
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	I probably wouldn't fool around with oil capacitors in this application (they're fashion accessories)- I'd probably start by swapping out for the same type of caps originally in there and see how that works, then (cautiously) swap for something like a decent polypropylene. I say "cautiously" because speakers voiced for one type of cap will often sound different but not better with another type. And the cost of doing this stepwise is minimal, so why not? __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

6th March 2005, 07:22 PM	#5
-=Zepplock=- diyAudio Member Join Date: Mar 2005 Location: Sunnyvale, CA	So if the capacitors are oil-based - which ones should I replace first? Thank you. __________________ Led Zeppelin Forever Make Love Not War

6th March 2005, 07:30 PM	#6
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	IIRC, the 6 had wax paper caps. Replace 'em all, especially the ones in the tweeter feed. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

7th March 2005, 06:36 PM	#7
-=Zepplock=- diyAudio Member Join Date: Mar 2005 Location: Sunnyvale, CA	Nice, thank you for the information. I'll do it as soon as I figure out how to remove the cloth on the speakers __________________ Led Zeppelin Forever Make Love Not War

10th March 2005, 04:51 PM	#8
-=Zepplock=- diyAudio Member Join Date: Mar 2005 Location: Sunnyvale, CA	Meanwhile replaced the leaking output caps on the amp - didn't help the highs. __________________ Led Zeppelin Forever Make Love Not War

10th March 2005, 05:29 PM	#9
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	It would be my guess that these speakers didn't have particularly good high frequency response to begin with so you wind up diddling with caps to fix a problem that doesn't exist.

10th March 2005, 05:32 PM	#10
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Build a nice little tone control __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
newbie with input tran. question and wiring question	imo	Solid State	0	18th January 2006 10:10 PM
Capacitor Question /question on cap	TunaFish	Tubes / Valves	14	12th January 2004 02:23 AM
PS question - tformer question actually	breguetphile	Chip Amps	2	30th May 2003 01:29 PM
old speaker question, bullet midrange question & link to speaker project	wallijonn	Multi-Way	10	5th November 2002 06:03 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read