Jump to content

redstone7

Members
  • Posts

    30
  • Joined

  • Last visited

redstone7's Achievements

Newbie

Newbie (1/14)

0

Reputation

  1. Hello to Andy and Mark, I just looked at the KLH model history as a quick reference for the thousandth time and I wondered if either of you would be offended if I did some updates on the page. I know there's more than a few KLH people that respect the early days of the company but I just want to make some things better about this page , for instance....the model 6 had a 12" woofer, the page shows the 6 and 17 as being 10" woofers, the 20 did not have a Garrrad changer, the 19 did not come with a AM/FH tuner, anyway I have lots of time if either of you will accept my contribution as I believe there are newcomers that reference this page on occasion and I'd like to help make it more understandable, Easy goes it, Rob
  2. Yes I really do like the sound of the Clarity caps, we used the SA range in my fives and I've never doubted myself about spending the extra money, I don't have the golden ears either but they do sound great and I always wonder what the difference would be if I used the SA grade in the Macs or the AR3a's where we used Solens,Daytons and Auricaps. I will say that we rebuilt a second pair of AR3a's for my youngest sons studio for a second reference pair and used the ClarityCap PX's throughout and the sound was very average at best my other AR3a's we used Daytons with Auricaps for the tweeters and they sound much better throughout the full range, I don't know if this helps, hopefully so.....
  3. Hi, Yeah the system works fine. When I mentioned "souping up" a pair of model 12's I wanted to clairify that I was speaking only about the contour boxes, the drivers will always stay stock. So we'll see what comes with this project as we are people who enjoy tinkering with stuff. To end this post I will throw it out there if anyone has experience wiith the damping of the woofer in KLH speakers, did KLH use enough or just the right amount of fiberglass? Over and out...Rob
  4. Hi again and thanks for the quick reply Roy......I do know about the phasing and my sons and I (I lost my hands in an accident) have got everything marked with tape markers as to their polarity not to mention the wire itself has ridges on one wire and we use that as positive. I totally agree with your statement as in the past I've seen peoples systems all messed up polarity-wise, we check with a dry cell battery connected to the back of the speaker to make sure the woofer pushes out when properly connected to the battery, and I still after all of these years watch if the woofers push outward when the amps energize, not very easily done with tube amps but it is perceptible and I do this after every wiring change. It still leaves me with "what happened ?" I talked to 2 different guys at McIntosh tech support and one offered that he thought it was one or more of the driver tubes, in these amps they use 12AX7's and 12AT7's, the other tech said he suspected an AC power supply problem, i.e. lack of , well the system has 3 dedicated circuits feeding it, 2-20A and 1-15A and all three are covered by whole house GFI and direct connected APC line conditioners which one tech thought wasn't needed, I explained to him that here in Colorado Springs cloud to ground lightning is a big concern for electronics owners, CG lightning strikes per sq. mi. are only bested by central Florida and Northern Texas. We haven't tested to see if the line conditioners are able to put out their rated amperage which are matched to the amperage capacity of the three dedicated circuits being used, we have tested voltage and all three are straight up 120 volts. It still comes back to the simple changing of the contour boxes making all the difference. As I said before Kent did all of the work on all of my KLH crossovers and he used poly film caps and replaced the ceramic resistors ect ect. (Kent please correct me if I'm wrong here) Anyway I'm kinda baffled but the system works great now and I knew once I typed it out it would be long winded but I wanted to put it out there incase anybody else has a similar experience. Frankly I might be selling off my Model 12's eventually because frankly I'm dissapointed in them, my Model 5's have stronger deeper bass than any of the 3 pairs of Model 12's here, the 5's are right there bass-wise with my AR3a's. I still think somthing went duff with one of the transformers in those contour boxes, I'll be sending them back to Kent someday, hopefully soon if my life would just slow down for a few minutes and get them out of here. I think Kent probably thinks I'm crazy but I still want to use ClarityCap SA caps in the Model Twelve boxes just like we did in the Model 5 crossovers because it made the 5's sound VERY VERY GOOD, the problem is obvious though because they'd have to be mounted externally because of size. ANY suggestions here are appreiciated, if I could really soup-up a pair of Model 12's I might hang on to a pair, okay I'm done
  5. Hi to all, I was going to write Kent a while back about something that happened with my set up. I have a McIntosh system with a C-42 solid state preamp running a pair of Mac MC-275 power amps which we just re-tubed 10 months ago. The tube amps are driving a pair of KLH 5's and a pair of KLH-12's that Kent was nice enough to help me completely rebuild the crossovers in, the system just sings...... but one day I noticed all of the low bass was gone but if I ran just one amp-speaker combo the bass was fully back but as soon as both amps and all speakers were on the bass went away again, all the tubes tested fine, the preamp tested good, we swapped out all of the signal cables with known good ones, NO DIFFERENCE. I have an extra pair of Model 12 crossovers that Kent also rebult so we put those in place and it cured the problem, I now have full range throughout the system. I ask all of you in this forum, what do you think?? I can't believe that the transformers would be the culprit because the 12's worked great when they were the only ones on. All I know is that the system works great again and the original crossover boxes are sitting on a shelf for now
  6. HI, IF YOUR STILL AROUND CAN YOU TELL ANYTHING ABOUT THE CAPACITORS HE USED, KENT IS REBUILDING SOME M5 CROSSOVERS FOR ME (I DONT HAVE HANDS ANYMORE) AND ANY INFORMATION IS HELPFUL, THANKS, ROB
  7. " FINISHED " OR IS HE JUST GETTING WARMED UP , ROB
  8. Hi Vern, I guess I was being sarcastic because of my own frustration at times about the lack of info. but you opened my eyes to the fact that I/we are dealing with the 1968 information level in 2008, information flows at such an enormus rate now and companies like to boast about their products and how they come to be, this forum would probably have many more members if KLH R&D was a current company with many more eyes watching it , there are just a few of us here dealing with 40+ year old products. The M12 TEST stamping is on the back of the magnet on the mids and tweeters right next to the date, I only mentioned it because it's the first time I've ever seen that on any model, Take care, Rob
  9. Vern, Trying to do a history on the original KLH you'd think you were doing a study on a company in eastern Russia in 1900, I wanted to add that when I bought those Model 12 woofers the guy did produce the Model 6 woofer for comparison, same basket ,same cone, same surround, different magnet and likely different voice coil. When we had the 12's apart last fall I remember the stampings that showed 1968 and 1969, I don't remember the dates, also on the 12's I bought as a pair there were stampings on all of the mids and tweeters that said M-12 TEST. I wonder if we'll ever know anymore about the 2 tweeters KLH mentioned in their brochures, the 1 5/8 inch and the 1 3/4 inch, maybe it's my eyes but I 've never been able to see the size difference in the cones, Thanks for the reply Vern, Kent will be receiving all of my crossover boxes today, Rob
  10. Hi Vern, I can still relay these numbers to Kent but since you wanted them I'll post here, As mentioned before I have 4 Model 12's, The ones I bought as a pair are 003708 and 003711, of the other two only one has the sticker and it is 00475, I looked again to make sure of that and that one only has 5 digits instead of 6 , Also I have the back plates that came from a pair that the cab's were real bad and the woofers were missing so the guy just sold me the rest including boxes for $100 and those numbers are 004422 and 004426. I have been reading around and I see people saying that they have seen Model 12's with square magnet woofers that were original, I have never seen that myself only the double ring round magnets, in fact in 1975 I was in Cleveland Ohio visiting and I went to the local KLH repair facility to buy some Model 5 woofers for a homebuilt system and the guy at the counter said " why not buy the 12 woofers for $48, $8.00 more than the 5 woofer and the 12 woofer had a double ring round magnet, (6 woofer was $32), I bought a pair and put them in my Model 23's and they rocked the house for many years powered by my Dynaco SCA80-Q I built in 1973, the 23 woofers went to the project, I am amazed how few KLH Research and Development employees are around to comment on any of these posts/subjects, I do indeed wish they would speak up more and give us more knowledge of the operations in the original KLH R&D, Rob
  11. Dan, I'll get the numbers to you one way or another, as you know they're big and heavy so I'll see if I can tip them forward and then have my caregiver read them, hopefully they are there!!! One pair came from AudioClassics, the others I found separately, one from Buffalo and one from Detroit. The latter 2 I'd be surprized if they were there, anyway, give me a little time and I'll see what's there, Take care, Rob
  12. Hello to all, I've been reading the posts on the model twelves, I know it has been a while since anyone was here but I'm finally out of the hospital to ask any/all of you if anyone can help me. I lost my hands and was severly burned in a work accident in 1997, I haven't lost my love of music or the old school stereo equipment and the great quality sound they still have, my problem/blessing is that I now have 4 KLH Model 12 speakers and 6 crossover boxes, I live in Colorado Springs and I just left the local high end stereo shop where the guy couldn't fix my Marantz 150 tuner so I took the boxes and the new caps to him and he told me it was all " hard wiring and labor intensive " in other words he is too lazy to deal with it unless its a pcb replacement, my question I'm putting out is....can anyone help me re-cap these or does anyone know someone who would be willing to help me out, my sons are in California and Oregon and they helped me get all the drivers squared away but they can't break free again til late summer to help with these crossovers, I'm very willing to pay for the time spent working on them, I will be watching to see if anyone responds, Thanks, Robert
×
×
  • Create New...