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HDBRbuilder

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About HDBRbuilder

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    Arkansas
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    woodworking, motorcycle touring, shooting, audio/video

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  1. HDBRbuilder

    What were Chorus cabinets made out of?

    In my experiences at the plant, Klipsch never made ANY speakers using "scrap" of any kind except for with the crossover network boards. But, I left in OCT '83! And you would be surprised how many folks who worked there were found digging out VERY USABLE "scrap" from the "scrap trailer" after work at the loading dock in front of the cabinet shop all of the time!!...INCLUDING MYSELF!! It was standard to use plywood for the motor-boards and rear panels, though! As Klipsch BEGAN its production of the earliest of these speakers, they were still in the process of using veneered poplar lumber-core plywood for the side, top and bottom panels of the boxes, unless they were "decorator" models...so for awhile there may have been some made out of poplar lumber-core plywood for those particular panels, but the INTENT seemed to be a move towards using veneered MDF for the sides, tops and bottoms when I left in 1983. R&D had already been playing around with testing out MDF for those panels in the speakers...and had even built up some LaScalas using it for their testing. GP had kept jacking-up the prices of the Poplar lumber-core panels in fine veneer, and R&D saw the cost advantages and sonic advantages to moving to MDF as much as possible for production in the future...and the Chorus, Quintet, etc. were still in the works, along with all but the earliest of the KG series (KG2 was already beginning production at the time). SO, I am pretty sure that they were all DESIGNED with use of MDF panels wherever possible, while retaining plywood for use in anything that would need to be routed-out and have drivers installed to it....based upon what I saw happening before I left in Oct '83. The industrial line at the time would remain plywood construction throughout. JRH can expand on all of what I SAW/HEARD, since he was so heavily directly-involved in the R&D in those days. FWIW, Being in the cabinet shop part of the plant gave us much more of a clue as to what was in the works...simply because so much of what was GONNA happen tended to show up there, very early on in its PHYSICAL development, as far as cabinet-construction development went, ie.: "What the hell is that??" "I can't tell ya, it's top secret!!" Kinda hard to do totally "top-secret" development when you gotta go to the cabinet shop with it all of the time...back in those days!
  2. HDBRbuilder

    What were Chorus cabinets made out of?

    BTW, I'm NOT "the historian"...but I understand how busy Jim Hunter is right now, so just trying to lend a hand when I have a clue about the answers.
  3. HDBRbuilder

    Who / How were finishes decided?

    I believe that in the early years, the veneered panels were limited to PRIMARILY black walnut and mahogany...then oak was added....then in the late 1960's or early 1970's, rosewood, ebony, etc. were added according to availability and customer request...but things changed later on (1990's??)and many of those fancy fine veneers were scratched off the list leaving Walnut, Oak, and Cherry veneers in order for the "powers at the time" to be "politically-correct" due to deforestation in areas those fine veneers came from and the cost incurred in getting them. PWK himself was very fond of Black Walnut for veneers...since so much of the fine furniture in those early days was made from it....and his affinity for Black walnut gunstocks. Most shooters of his day tend to have an affinity for American Black Walnut. As for the finishes actually used over the years, the furniture lacquers have changed over time due to EPA restrictions...and the oils used for oil finishes have probably changed for the same reasons....not even sure any oil finishes are currently available as an option anymore.
  4. HDBRbuilder

    What were Chorus cabinets made out of?

    'MDF or LDF box panels (tops, bottoms and sides), if I remember correctly....I don't believe they ever used any veneered lumbercore plywood for those panels at all!
  5. HDBRbuilder

    2019 PILGRIMAGE DATES APRIL 25-28, 2019

    If you are a military retiree, then swing by LRAFB to the Class Six store there. Otherwise there will be lots of opportunities before you get to Hope. with the final opportunities before you get to the Prescott exits....the County Arkadelphia is in became wet last year....and if you wait til you are at the Prescott exits, then you waited too long!
  6. HDBRbuilder

    I Retired Yesterday!

    I "totally retired" back on 30 November 2018...last day at a job where I worked for somebody/something else. I was lucky enough to actually end up MORE financially-comfortable, than I have ever been while working a job...have no debt to drag me down (at the moment) and actually enjoy not setting the alarm clock anymore. I am currently looking around to figure out where I will build my "retirement home"....so far nothing is locked-in yet.
  7. HDBRbuilder

    Need help on IDing some cornwalls

    If the voice coil dust cover on that woofer has been off long enough the likelihood of a rubbing voice coil is very high. I would just replace it with a good used K33. As for the tweeters, they both function the same, and only have different magnet units on them...so if they are working then just leave them alone. Any "upgrades" you decide upon are totally up to you...I know Bob Crites personally and have even visited him and he sells good stuff.
  8. HDBRbuilder

    Need help on IDing some cornwalls

    You have two different versions of the K77 tweeter, one has the earlier Alnico magnet (round), whereas the square-magnet tweeter (K77M) has the ferrite mud slurry magnet (square). This is probably because a replacement K77M was put into the speaker at one time or another. Klipsch changed over to the K77M tweeter a few years after your speakers were made. As for the VOICE COIL dust cover on that woofer having come loose, there are two options, either buy a new (or used in good condition) replacement K33, or send the one you have off for a rebuild. The reason is that once dust has gotten inside of that VOICE COIL dust cover (which is highly likely depending upon how long that cover has been loose), then it is only a matter of time before the voice coil starts rubbing, it has not already begun rubbing. At high volumes that voice-coil rubbing will really become audibly noticeable and it generates HEAT...from that friction...possibly enough heat to actually cause the woofer cone to catch fire, which is the last thing you want to happen. You will HEAR the voice coil rubbing WAY BEFORE it gets to the point of any kind of fire happening...because it sounds like a "scratching" noise coming from the woofer and it will annoy your ears. ME???? I would just get a good condition used K33 and replace that one.
  9. HDBRbuilder

    Need help on IDing some cornwalls

    They shipped as CDBR models, Cornwall Decorator Birch Raw. Year of manufacture is determined by Letter in the Serial number, which I can't make out in the pics.
  10. The limitations of the original production LaScala folded bass-horn design will be the main issue (if you perceive one) with your love of the deep bass because the bass starts to fall off in those speakers around the 60-75 hz mark and it falls off rapidly. The option is USUALLY to supplement with subwoofer(s) below that point...and what I have seen is that many crossover the sub-woofers at around 75hz or a bit higher. The up-side is that what bass the LaScala DOES produce will be clear and tight! Keep in mind that this is strictly due to the bass horn lens design, so changing out the woofers in an effort to increase bottom-end won't make much difference, if any at all. BTW, I loved my time in Belgium working with the 3rd Para-Commando in the mid-1970's!! Great guys!! And Diest (near-by Schoffen) was a serious party town for its size!
  11. Keep in mind that for many years Klipsch & Associates (the company) depended the MOSTLY upon "word-of-mouth" advertising and that the "print" advertisements tended to be small and only found in "audiophile" and popular "scientific" publications due to the expenses of advertising, especially during the early time period where the company tended more often to run into the "red" than into the "black" in the company ledgers. So, PWK spent more time visiting dealers to do demonstrations in those days and put in lots of flying time to accomplish that. At times the company could not even afford to pay wages and/or bonuses earned to some of its employees, who were given shares of stock in lieu of money. It was this way throughout the times between the beginning of the company into the early-to-mid 1960's. If it wasn't for Mrs.Belle's (PWK's first wife) teaching salary, even PWK would not have had "food on the table" a number of times during the company's early "struggling" years.
  12. HDBRbuilder

    What's the weather like where you're at?

    That's the excuse all roofers use to keep from having to remove them, but under that cellophane strip is a patch of tar and it is there for a reason.
  13. HDBRbuilder

    What's the weather like where you're at?

    Even if the shingles are put on in cold weather, if the cellophane strips are removed first, then the first hot day in the summer they will still stick to the shingle under them....but is always wisest to have new roofing done in summer and to hang around to make sure they are removing the cellophane before putting the shingles on.
  14. HDBRbuilder

    What's the weather like where you're at?

    When they shingled your roof, did they remove the cellophane strips on the underside of the shingles before installing them? Most roofers nowadays DO NOT do it, because it takes time to do it and "time is money"....but those tar patches on the underside of the shingles is what keeps them from coming loose....and if the cellophane strips are not removed, then the tar patch can't adhere to the shingle under it....leaving only the roofing nails to hold the shingle on...not enough to keep high winds from causing them to blow loose/off.
  15. HDBRbuilder

    Cassettes?

    I still have my Technics RS676AUS cassette deck....one of the better ones circa 1975...had great heads on it!
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