Showing posts with label audio history. Show all posts
Showing posts with label audio history. Show all posts

Wednesday, September 11, 2013

Klipsch Historical Archives Online

 I don't go to the Klipsch front web site very often so it seems I missed a major site update. Klipsch engineer Jim Hunter has spent years going through PWK's documents and preserving these historical documents in digital form. Fortunately Klipsch is dedicating a portion of the site to host these documents. 
 You can access the some of the new sections of the site here.

Here are a few examples of the rarities posted. 

Metal printing plates.
Early picture of Klipschorn construction.

It is very interesting that PWK was also interested in phonograph pickup design for many years from 1940 to late 40's.

This is my favorite section  a collection of PDF documents with Klipschisms, quotes, and anecdotes.

Paul's original oscilloscope was a 1930s DuMont model, with similar amplifier for horizontal and vertical. His typical way of using it was to put the output of the audio oscillator into the horizontal input and the output of the item under test, through an attenuator, to the vertical input. Thus the relation of the two was the inclination of the line or ellipse and didn't require keeping the oscillator output constant as its frequency varied. He later (1950s) bought a Precision scope, allowing the DuMont to be used for production testing. -- Jim Haynes

 In the mid-1950's, when Paul came to Boston for the HiFi shows, we would have our Klipschorns along with Marantz amplifiers and Grado cartridges in our demo room. With the usual Harvard and MIT fans around him, he sat down on a Marantz power amplifier. Soon we smelled a peculiar odor, and for a moment thought some competitor had put a stink bomb in the room. Just at that moment Paul gave out a Klipschorn-sized yell!! He turned around showing his bottom to the gathered group of admirers saying, "Look what that "adjective/noun" amplifier did to me." There were two clean burn holes from the output tubes clear through his wool trousers, boxer shorts, and his seared rear end. It wasn't long after that Mrs. Marantz came into the room. Paul went to her, bent over and said, "Look what your amplifier did to me!" He later spent a good deal of the show trying to get Marantz to pay for his trousers" -- Don Davis

Go to the redesigned Klipsch site and check out the new PWK historical information posted. I only posted a few examples. I understand Jim Hunter is going to keep adding information to the site which is great news. I'm still waiting for his book because he is the one to write the book on PWK.  

Tuesday, August 27, 2013

LOUDSPEAKERS A Visual Hi-Fi History 1870 - 2008

Cool poster of HiFi history. They left out a few though... LOL

I don't have a larger version of this.
But everyone else knew about this site.
You can order HiFi posters from 
Thanks for the heads up Peter and Joe.

Thursday, March 17, 2011


Another article scan. This one really cracks me up. Yes honey doesn't the industrial amplifier look nice next to your fine crystal. Some things never change.

Nicely placed ad.

Tuesday, February 15, 2011

Jack Mullin Audio Pioneer

Producer and tape pioneer Jack Mullin in his studio. Ah look at those Ampex 200s. He is giving them the same look I am giving the RCA speaker behind him.

Here is Jack Mullin giving a demonstration of the then new Ampex reel to reel recorder. This would have been a fun demonstration to attend. It is impossible to ignore the WE speaker.

Notice the speaker he is using. Possibly the first coax. It is an 18 inch Western Electric woofer with a WE555 bored through the middle with an attached multicell. This 18 inch woofer with 555 together have been posted on this blog before. Just amazing.

Wednesday, February 2, 2011

Changing from Mono to Stereo Music by Charles Graham

Ok mono guys it is time to embrace the coming wave that is stereo music.

Wednesday, November 10, 2010


A little difficult to read due to resolution but very cool and retro. I love this stuff. This week I should receive more 1950's electronic magazines.

Tuesday, October 5, 2010

Thursday, September 2, 2010

PWK Inspecting Western Electric Horn

This is a great picture taken by Max Potter a Western Electric engineer and audio pioneer. He was the inventor of the P-Trap a modification to the early Khorn crossover networks to remove the 9 KHz “glitch” inherent in the early K55V (push pin) driver. Max Potter passed away recently but he influenced many in the industry.

Max Potter and PWK at the Musuem Of Audio History.

Tuesday, August 31, 2010

Design of a 27-inch LOUDSPEAKER R.T. Bozak

I've posted about this monster field coil that is in the Klipsch museum before but I thought I would share this document that Steve Schell posted at Audio Heritage.

A few pics. Not sure how many survive to date.

Check out my foot for a little perspective.

Thursday, July 29, 2010

Acoustic Recording The Dawn Of The Audio Age

I love this pic of an early recording with Stroh violins. Definitely looks like a steampunk scene. No pesky wires to get in the way. This is just straight in.

Scientific American 1896


A very interesting site on the history of early recording.

Tuesday, June 8, 2010

Klipsch Museum of Audio History Tour by Jim Hunter

I am so glad Klipsch put together these videos by Mr.Hunter. He has great knowledge of audio history and I always learn something new from his tours. Thank you Jim Hunter. Plenty of non Klipsch items on this tour. This is much better than my quick walk through.

Sunday, May 30, 2010

RCA High Fidelity Ads Of The 50's Hi Fi Plus

RCA introduces something new Stereo.

RCA introduces tape.

RCA how to listen. A new dimension in sound. This is great with a nod to the DIY crowd. All those pipes remind me of Bob Dobbs and the Church of the SubGenius.

Thursday, May 27, 2010

Radio News August 1926 Vacuum Tubes And Their Uses

Great very early article about tubes for the layman.

Friday, May 14, 2010

Western Electric Mother Of All Coax

Images of this Western Electric Coax driver has been making the rounds lately. It was part of a cabinet. The horn was aparently part of that cabinet. I would imagine it would be hard to find to complete this driver. This is an 18 inch Western Electric driver with a WE555 as the HF. This is just over the top. Ahh I got get over WE lust.