Lavane
Lunatic Member
I remember them keeping up with a 80wpc integrated I had. Thanks for the info.
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KLH speakers reference thread (original models/Henry Kloss era) 1957-1977
- Thread starter RxDx
- Start date
GREAT thread Ken! Just for kicks I thought I'd include some pics of the early version of the Model Five woofer and crossover vs the later one. This is an early Model Five woofer and crossover plate that I have here. Note the huge round three piece magnet structure on the woofer and the point-to-point wiring on the early crossover network assembly (1967 build date, serial #005071)
This woofer was used in the early Model Twelve as well.
From a 1972 pair here is the newer style of woofer (note the cone weight in grams written in black marker)
And the newer style circuit board crossover before recapping and contact cleaning (original caps, note the dual value caps they used):
Also, you are 100% correct about the smaller midrange speaker being used in the Twenty-One radio and extension speakers. Here is a shot of one of my Twenty-One radios that I'll get around to rebuilding some day (build date Aug 1966 serial #07447)
This woofer was used in the early Model Twelve as well.
From a 1972 pair here is the newer style of woofer (note the cone weight in grams written in black marker)
And the newer style circuit board crossover before recapping and contact cleaning (original caps, note the dual value caps they used):
Also, you are 100% correct about the smaller midrange speaker being used in the Twenty-One radio and extension speakers. Here is a shot of one of my Twenty-One radios that I'll get around to rebuilding some day (build date Aug 1966 serial #07447)
GD70
Lunatic Member
Painted vs unpainted tweeters is very common, BUT, if you look at mine, screw mounted were countersunk in the baffle, yours are flush mounted, which makes me think there were possibly original epoxied tweeters that were replaced with screw mounted, and the black one is mounted at an angle. I'd be curious to see what's under your tweeters regarding the cutouts. Later Six's tweeters were flush mounted as shown in my 1972's. You can also see in my Seventeens the tweeters are counter sunk in the baffles, and black painted.
Glenn
I've got a pair of the extension speakers for the radios too, but they don't have any model or serial numbers on them. Same drivers of course as you mentioned above:
RxDx
Speaker collector
Thank you! and thank you for detailing this.
RxDx
Speaker collector
Good catch.
Anyone reckon when mine were made? They’re ASV6, somewhere in the 15000 range. As a point of some interest, the original cloth looks slightly different than what I’ve seen on other model 6’s-a bit more coarse-grained and yellow, as opposed to the grayish-oatmeal that I seem to see around. Feel like I’ve seen it on some 17’s, and it certainly looked original. I replaced them with a similar-textured off-white linen a couple weeks ago, since the old ones were warped and stained and falling off the speakers.
I love how these things sound, but I definitely need to recap them and redope them soon-they’re still running on their original “Temple” caps, woofer returns immediately, and the stereo image feels pushed to the left unless I decrease the treble on the left speaker and keep the right one normal or increased (weird, but it seems to work). Granted, the right one is getting a longer and thinner wire from my amp due to space constraints. Gonna play around with that today and see if the problem changes.
Edit: Make sure your speaker cables match, y’all.
I love how these things sound, but I definitely need to recap them and redope them soon-they’re still running on their original “Temple” caps, woofer returns immediately, and the stereo image feels pushed to the left unless I decrease the treble on the left speaker and keep the right one normal or increased (weird, but it seems to work). Granted, the right one is getting a longer and thinner wire from my amp due to space constraints. Gonna play around with that today and see if the problem changes.
Edit: Make sure your speaker cables match, y’all.
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45rpmspinner
Super Member
Beat me to it. I was typing much the same and decided to go to the grocery store in the middle.
In short...+1
GD70
Lunatic Member
The recap and surround reseal will make a very noticeable difference. You'll be amazed. Remember to seal the dust caps as well.
stevo137
Super Member
Glenn,
Having issues with the site today, posting and such but I did pull one tweet and it appears that these were flush mount, removable.
It's strange, I could swear that was the original grill fabric because it also has the fine mesh behind it and seemed factory installed.
Also, there is a Richey 8MFD cap wired to the tweeter?
Both speakers tweeters are wired this way with the Richey 8MFD caps.
Combo sealed woofer, removable tweeters?
I'm not very familiar with these and so I really don't know.
Having issues with the site today, posting and such but I did pull one tweet and it appears that these were flush mount, removable.
It's strange, I could swear that was the original grill fabric because it also has the fine mesh behind it and seemed factory installed.
Also, there is a Richey 8MFD cap wired to the tweeter?
Both speakers tweeters are wired this way with the Richey 8MFD caps.
Combo sealed woofer, removable tweeters?
I'm not very familiar with these and so I really don't know.
Attachments
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viennadad
Active Member
I have just picked up an original pair with serial numbers 133997 and 134048 that have the recessed terminals. FWIW.
Tim D
Super Member
The Richey cap is an original and needs replaced.
I'm with the other poster in that the tweeter is probably a replacement. I don't believe we've ever seen a screw mounted tweeter on a Six that wasn't countersunk. My guess is that a previous owner blew out the original expoxied tweeters and cut them out. Nothing wrong with the job they did as long as there is a good seal on the cabinet where they are mounted.
I'm with the other poster in that the tweeter is probably a replacement. I don't believe we've ever seen a screw mounted tweeter on a Six that wasn't countersunk. My guess is that a previous owner blew out the original expoxied tweeters and cut them out. Nothing wrong with the job they did as long as there is a good seal on the cabinet where they are mounted.
45rpmspinner
Super Member
However, looking at the scraps, that does appear to be original grille cloth with the black shroud material underneath.
Makes me think the front baffle must have been pulled from the cabinet in order to do the replacement.
Tidy job of it, overall.
RxDx
Speaker collector
At least older than 1978.
stevo137
Super Member
Thanks for all of the input and I don't want to jack the thread.
There's something strange about these speakers.
The dimensional imaging is crazy, the highs are amazing, low end is great.
Its kinda' freaky how three dimensional they sound, very warm, fully musical and detailed.
The Kenwood KA-5700 is a gem to run these with.
Strange how they had original grill cloth that was also stapled and still managed to screw in replacement tweeters in the front, you can't remove it without destroying it.
And then they painted the grills with black paint and didn't seal the woofers?
Oh well, I'm happy with them and keepers for sure.
Thank you,
Steve
There's something strange about these speakers.
The dimensional imaging is crazy, the highs are amazing, low end is great.
Its kinda' freaky how three dimensional they sound, very warm, fully musical and detailed.
The Kenwood KA-5700 is a gem to run these with.
Strange how they had original grill cloth that was also stapled and still managed to screw in replacement tweeters in the front, you can't remove it without destroying it.
And then they painted the grills with black paint and didn't seal the woofers?
Oh well, I'm happy with them and keepers for sure.
Thank you,
Steve
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RxDx
Speaker collector
You're not jacking the thread as far as I'm concerned. It's about all things early KLH
speakers.
I feel yours are original. Almost impossible to pull the front motor board without going
in through the back. The epoxy puddle under the terminal plate would be gone, if
someone had done that. Not to mention, as you noted, they didn't bother to slime
the woofer surrounds.
At the same time, they definitely do not fit the table I've built around Model Six design
changes. So I don't know. Liking the stands they're on...
speakers.
I feel yours are original. Almost impossible to pull the front motor board without going
in through the back. The epoxy puddle under the terminal plate would be gone, if
someone had done that. Not to mention, as you noted, they didn't bother to slime
the woofer surrounds.
At the same time, they definitely do not fit the table I've built around Model Six design
changes. So I don't know. Liking the stands they're on...
Actually digging into them, I'd probably place them at the late '60s or early '70s-they look exactly like GD70's from 1972. The driver resembles that from the Audiojones' Model 5 from '67 with the round magnet, not the later one with the square (AlNiCo?) magnet, although I believe the Model 5 used a different magnet. I didn't see any date codes on either of the drivers or tweeters. Any further attempts at dating them resulted in one-sided conversation and funny looks in the restaurant.