JRH

Rarity is high, but performance is compromised. A collector might want to keep it as is, but it is also possible to update it to near-current performance, albeit at a fairly steep cost.

This is a Klipschorn Junior, likely mid- to early 50's. The Cobraflex was used as a cost reduction in anticipation that the buyer would eventually upgrade. The coil formers (wooden discs) are likely to have dates penciled in.

X codes shipped in 1982. Paper logbook entries end a few thousand Heresy's before this one, so "late 1982" is the best I can do.

3811 is one of 10 HISM's shipped to PMA Engineering on 10/27/82.

Sorry Double d. It's too new for me! The Klipsch website might have some history...........

Need to see some serial numbers.

I knew this day would come! We do not have the shipping logbook for this timeframe. It came up missing when Engineering moved from Hope to Indianapolis in 2002. What I do have is a "cabinet shop" logbook that offers very little detail, other than the date they left the cabinet department. In this case we see December 27th as the date for both.

It appears from the logbook that they were keeping track of pairs with a letter. 677 and 678 have the "F" designation. 673 and 674 have a "D" designation. Yep, 675 and 676 have an "E". All were shipped Sept. 5, 1975. My guess is that yours are not perfectly grain-matched.

Sorry! October 10, 1957.

Here ya go!

Logbook says September 18, 1963. Of note, only one pair was shipped in August! Musta been leaning heavily on Belle's teaching salary!

Could be. I was looking at price lists, and 1985 had Heresy, where 1986 had Heresy II.

June of 1960 and October of 1961.

1986 was the first year for the Heresy II (as we think we know it). Actually there was a Heresy 2 way back when the K-1000 horn was replaced with the K-700 in the early 60's. Everyone forgot, so the II was used "again".

The letter-codes began in 1963 with "A". Heresy's and Cornwall's were so new that the SN's took a four character format. Specifically 6A03 and 3A09 respectively. Interestingly the 6A03 Heresy follows 603, while the 3A09 Cornwall follows 308. Wild times in the logbooks!

Boom3 got part of it right! Sequential serial numbers did not necessarily ship sequentially, due to some units likely being put on the back burner for the rush orders. I'd like to see the document referenced as "KLIPSCH HERITAGE REFERENCE DATA - (V.3 - 23 Aug 2013)". I hope to Hell I did not generate it! The 1955 timeframe should be 1963, and not necessarily those specific days. It is true that #1811 was followed NUMERICALLY by 1A812. And by the way, #1700 shipped a week after 1A812!

It was Lloyd. His initials are on the first picture in this thread, where "FINISH" was crossed out.

Both of these shipped March 29, 1963. My guess is that the original owner could not immediately afford 2 Klipschorns for stereo, so he bought the Heresy to intially serve as the second channel, with the idea of adding a Klipschorn later, and then using the Heresy for a center.

May 1956

Sorry. It hasn't "come top the top".

Chris is definitely on the right "track"! PWK religiously used two widely spaced omni's. This minimalist approach supported his desire to use a derived center channel at playback. The electrical sum of left and right can be shown to be virtually identical to an actual center mic. Attached is his philosophy in his own words.

To new for me. Sorry.

Actual numbers would have to come from a literal examination of every hand-written logbook entry, not something I plan to do. In any case, these hand-written records end in the early 80's when "computers took over". With a fast succession of platforms, the electronic data is lost.

Beyond the general "Codec" published for many years on the Forum, I am not aware of such.

There seems to be a little "Marketing license" in this advertisement (imagine that!). The 1956 date is a year too early (musta needed "30 years" in 1986), and it was not PWK's "second speaker". There were several generations of the Rebel, as well as the Shorthorn ahead of the Heresy. The Cornwall and Heresy both started life with the K-1000 diffraction horn. In January 1963 the Cornwall went to the K-600. It was not until May 20, 1966 that the Heresy changed to the K-700. However, the K-1000 still appears in many Heresy's after that date until at least 1967.