JRH

Note the change to the Heppner driver was accompanied by a change from the E network to the E2.

They are the "original" Cornwall II's. 159 and 160 shipped on 12 Nov. 1971, and 161 and 162 shipped 3 days later. No clue about destinations. What is exceedingly rare (and curious) is that 162 was signed by RLM. That is Bob Moers, President of K&A. He is at the left during construction of the Plexiglas K-horn, at roughly the same point in time.

I don't know, and I doubt there is "evidence in the files".

All I can discern is that it was mahogany.

The phase plug change was only to fill a minor dip in the upper frequency response. B2 can be used with either.

In the early 2000's a "boutique" amp company approached Klipsch with a "marketing collaboration" proposition. No deal was reached. The Museum has a vaguely similar prototype. This MIGHT be an internal prototype of theirs that we did not see. This is strictly a GUESS! On the other hand, it could be (and probably is)someone just farting around.

#786 logbook entry says: S-M-2.15; E.V.; W2 It shipped 6 Nov. 1957. No idea why it was "inspected" 3 months later!

995 is also one of the relatively few 15" woofer versions sporting a 22 network. It should sound more bass-heavy!

The leading character is a "zero". The first logbook entry is for 0J004 on Jan. 5, 1971. Later in January, 0J006 has the note: "First unit with Belle Klipsch label".

I got an email asking specifically about 993 and 994 logbook entries. Not sure why it doesn't appear on this thread. In any case, they both shipped Dec. 14, 1959 and were entered as "SWO-15, 103LX, SAHF, K-77, and W5-22". A few 15" woofer versions reflect the W22 network. However, the vast majority have the W22 for 12" woofers and the W33 for 15" woofers. Not sure why a few "buck the trend".

As promised..............

The Shorthorn's history is somewhat convoluted. In the 50's, K&A was struggling with solvency, so it was somewhat like Burger King: Have it your way! The Shorthorn was offered with a 12" or 15" woofer: K-Ortho 12 and K-Ortho 15 packages. The logbook reflects the "33' network suffix associated with 15" woofers, and the "22" suffix associated with 12" woofers (more than one brand of both sizes) The attached price sheet reflects the change to the K-77 tweeter from the University 4401. This explains the W2 and W5 nomenclature change. Due to attachment size limitations, I will post a network schematic shortly that sheds further light.

Yes, a pic would help! There is no clear evidence in the logbook about kits being offered. The standard "S" model was offered in kit form, but w/o serial numbers, and no entry into the logbook.

You've stumped "the historian"! It will take some research to identify the transition date. I highly suspect that both transformers have taps "spaced" by 3dB.

I believe they can be used interchangably. "Network", for PWK, was greatly influenced by his graduate study under Frederick Termin at Stanford. The oldest loudspeaker "network" so far identified in the Klipsch Archive is 1951, where "crossover network" was used. Semantics does evolve. The original impedance rating of the Klipschorn was 16 ohms. The DCR of the woofer coil was, and remains, a little over 3 ohms. It is no longer considered "16 ohms".

Thanks, grindstone! Not sure I've seen this one, but it has been added to the digital archive in case we don't have that particular issue. No surprises.

Sorry, but not much more. The logbook shows a ship date of 11/6/1957. Maybe the label date was miss-read?

In late February 1983 (2/22 thru 2/25) over 136 Heresy's were shipped to "Canada". It's unclear exactly when these particular two departed. Both are HWO's with #17 grills.

Bless you, wuzzzer!

These shipped the same day (10/12/81). However, #15 shipped to Stereo Scene, and #16 shipped to Douglas Hi Fi in Australia!

Built 1992-1994

I doubt that a dorm room was involved. I have heard him talk about his mother's console Edison record player being corner-placed to good effect. Also, I believe a fellow student at Stanford (Madison R. Jones did a thesis on speaker cones) suggested to him that all speakers sound better in a corner. This was 1932-1934. Paul said that he paid more attention to that thesis than his own.

The Cornwall debuted in 1959 with a K-1000 mid horn. In 1963 the K-600 replaced it and resulted in the Cornwall II. [There were vertical and horizontal versions of both.] In 1981 the company's collective memory did not recall this update, as the "II" had dropped out of use years earlier. So then came the NEXT Cornwall II. Virtually the same scenario occurred with the Heresy!

Klipsch's history pages have been "dropping off" for some time. These were penned by me prior to my departure in 2015. The LaScala did not get a very lengthy write-up. I can add that the Grateful Dead's LaScala's recently were on eBay. Also the first group I am aware of to use them live was Peter, Paul, and Mary. Below (if I can get this thing to paste) is all that I know of that used to be on the site other than some pics: The History of the La Scala Out of the Corner Named after the Teatro alla Scala in Italy, the original La Scala® was unveiled in 1963. Cosmetically improved over the years, the La Scala provides Klipschorn-like performance from a smaller cabinet that does not require corner location. Paul W. Klipsch offered it to Arkansas gubernatorial candidate Winthrop Rockefeller to use as a public address speaker, and he did use one on a train car during a subsequent campaign.

PWK was certainly human, and did make a mistake or two. He was quick to say "That was another great idea that didn't work!" The cone dome was one of them. We still have the tooling for the cone-shaped diaphragm that may go on display some day with another mistake. That was the choice of chemistry used for the very early K-5 horn series. They became brittle and basically cracked and fell apart. Sherman Fairchild's chemists put him back on track!