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So when did Klipsch change the Heresy 1 to the K-55-M driver?


Oicu812

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I dug around, but could not seem to find what I was looking for.  Unless this is the Heresy 1.5 version that I have seen referenced?

 

Anyway, I was looking for another pair of K-55-V Heresy 1's to use as surround speakers, and I needed a cutoff date so that I am matching the horns.

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I don't believe Klipsch put a K-55-M in a Heresy of any sort.  The change to the Heresy II squawker (K-53, K-52?) began around 1984, perhaps mid-year.   Klipsch did not track that change as they did not revise the name until the new cabinet, woofer and tweeter were adopted. 

 

Since it is some smoother, a K-55-M might well be a good choice for a squawker driver.  Sadly, I read there are no more OEM diaphragms available for it.  This is not to say that the K-53 is not also somewhat superior to a K-55-V; I have never seen a comparison. 

 

In short, if the Heresy has a Letter Code serial number, it is an HI (with K-55-V); if all numbers and labeled Heresy, it is what *we* on the forum call an H1.5. 

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3 hours ago, JohnA said:

Not likely original, but probably sounds like a Heresy.  What are the SNs of that pair? 

 

He mentions in the auction that the serials are consecutive, but doesn't either show them in a picture, or give them as part of the description.  Laziness.

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On 7/14/2018 at 5:39 PM, JohnA said:

Not likely original, but probably sounds like a Heresy.  What are the SNs of that pair? 

 

Here are two auctions I found.  These appear to be original, the "W" set has K-55-V squawkers (and seem to be built later into 1981), and the "X" set has K-52-H and are being sold with the original Klipsch box (and seem to be built early in 1982).

So it appears to me that the switch occurred between 1981 and 1982, from looking at these photos:

 

117W496

s-l1600.jpg

 

 

146X056

s-l1600.jpg

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