Jump to content

Looking to confirm Heritage timeline intro of 1RC network


hanksjim1

Recommended Posts

I am curious whether the notation in the Klipsch Heritage Timeline  "1955: K-500 / 5000 network phased out in favor of the 1 RC (Type A network)" is accurate?

 

I have a Klipschorn built on June 21, 1957, that I am pretty sure has all original components, and it has the 500/5000 W2 network.

 

Indeed, there is a 1957 price list that shows the W2 available separately and as an exchange/upgrade.

 

Additionally, there is an upgrade installation sheet that states the "500/5000 W2 is the 1957 standard for Klipschorns"

 

I searched the site, but couldn't find any additional content beyond the timeline.

 

I see the 500/5000 W5 was introduced at the same time to coordinate with the option of the T-35 tweeter (aka K-77)

 

If so, did the W5 become the 1RC?

klipsch price list 50s seperate components.JPG

KlipschNetworkModInstforW2andW5BalancingNetworks.jpg

Link to comment
Share on other sites

As PWK would say, "I disagree with the author".  That author would be me! I've spent the last hour and a half searching our pricelists and network schematics.  The "final word" on networks will require may hours if not days of sifting.  What I can say is the following, primarily based on pricelists:


 

570900     K-500-5000 without a suffix last appears

571101     W2 suffix appears.  I believe this is in association with the first use of an autotransformer.

580519     W5 suffix appears.  K-77 introduction.

630501     W6 appears.  This may account for the change from an SAHF to a K-55.

640601     "1" appears.  This likely coincides with the K-400 introduction.

670401     "A" appears. 

711001     "AA" appears.

 

Attached are a few clues.

 

Instructions 570315 Crossover Mods.jpg

Instructions 580109 W2 and W5 Network Modifications - draft  001.jpg

Instructions 580115 W2, W5 Crossover.jpg

Network Notes 670120 037.jpg

Link to comment
Share on other sites

  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...