Jump to content

Low budget Heresy H700 restoration.


gigantic

Recommended Posts

finally, for today, I did an preliminary pass of filler for the staple holes, gouges, scratches dings and chips, then applied sanding sealer and grain filler. Tomorrow, they'll get a coat of primer and another pass of spot putty to fill any dings still visible after priming. 

TI239RC.jpg

 

A6tE780.jpg

 

0zwAIwO.jpg

 

0DAYfta.jpg

 

 

 

  • Like 4
Link to comment
Share on other sites

back to the crossovers:
nchTRpm.jpg

it's my understanding that the Type C crossovers were matched to the K-22 & K-22-E speakers, which were 16 Ohm. My recollection of these speakers is that they sounded clear, but they also sounded quite dull, with very little bass. I realize that low-end thump isn't the strong point of these speakers, but given the 8ohm woofers, would it make sense to change the capacitor values to Type E?

Link to comment
Share on other sites

16 minutes ago, gigantic said:

back to the crossovers:
nchTRpm.jpg

it's my understanding that the Type C crossovers were matched to the K-22 & K-22-E speakers, which were 16 Ohm. My recollection of these speakers is that they sounded clear, but they also sounded quite dull, with very little bass. I realize that low-end thump isn't the strong point of these speakers, but given the 8ohm woofers, would it make sense to change the capacitor values to Type E?

what s the size of these cabinets H  D  W ?

Link to comment
Share on other sites

2 minutes ago, OO1 said:

ok , so fullsize heresy

yep. The H700 Heresies are Heresy 1, with a 700Hz type C crossover. Typically, they had 16Ω K-22 or K-22E woofers, although this seems to have changed later in the run, to 8Ω K-22-K & K-22-R woofers, along with a change to the type E network at some point with the H1.

 

Link to comment
Share on other sites

1 minute ago, gigantic said:

yep. The H700 Heresies are Heresy 1, with a 700Hz type C crossover. Typically, they had 16Ω K-22 or K-22E woofers, although this seems to have changed later in the run, to 8Ω K-22-K & K-22-R woofers, along with a change to the type E network at some point with the H1.

 

yeah , the   60's H  series were not a deep 

 

 

photo 600000 heresy009 9422343603 o 989x1465 1

 

Link to comment
Share on other sites

On 9/1/2022 at 4:36 PM, gigantic said:

back to the crossovers:
nchTRpm.jpg

it's my understanding that the Type C crossovers were matched to the K-22 & K-22-E speakers, which were 16 Ohm. My recollection of these speakers is that they sounded clear, but they also sounded quite dull, with very little bass. I realize that low-end thump isn't the strong point of these speakers, but given the 8ohm woofers, would it make sense to change the capacitor values to Type E?


so this keeps getting misdirected: My late build H700s are indistinguishable from H1 speakers, which have 8 ohm Alnico K-22-K woofers, except for the Type C network, which was configured around 16 ohm K-22 & K-22-E woofers. While I will most certainly test them with the OEM network, I'm going to assume that the original OIP capacitors have decayed and are no longer in original spec. Given that replacing the caps with modern construction resistors of equal value wouldn't be the same as the original network and that this specific configuration of tweeter, squawker and woofer were ultimately updated by PWK to the Type E with the flipped polarity for the mid and tweeter, would it be best for the performance of the speaker, used in a 2 channel system, as well as the primary drivers in a 7.1 surround system, to use the type E network and upgrade the capacitors and inductors to that spec?



*I have no interest in selling/flipping them and I would posit that the "improvements" that I've made to the cabinets, while aesthetically better than they were before I began and arguably better than new, have nullified any resale value these might have had, which given their condition, was negligible, except for parts.

 

Edited by gigantic
clarity
  • Like 1
Link to comment
Share on other sites

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...