C32 Ribbon Cables?

Discussion in 'McIntosh Audio' started by steelgtr, Nov 28, 2013.

  1. CohibaJoe

    CohibaJoe AK Subscriber Subscriber

    Messages:
    2,483
    Location:
    Central Jersey
    Getting a C32 Tuesday.....Put me on a list when these replacements are completed. Will send you a PM.
     

     

    Please register to disable this ad.

  2. Hofvox

    Hofvox New Member

    Messages:
    10
    We have just approved the final drawings for the C32 replacement FFCs with our USA manufacturer. Manufacturing is 6-8 weeks and I can tell you it has been great to have these made in the USA where changes can be made via email and teleconferences. Here is a 8x10 photo that will be included either by glossy photo, USB drive or a download. We probably will have instructions on a USB to keep the paper down and easy ship. We are now making a decision if the "solder to header insert" cables 9-13 should be included. The FFCs 1-8 do not requiring soldering and are easy replacements but the 9-13 requires one end to be soldered.

    History: The original FFCs in the C32 were made by the GORE company and the first generation production of FFCs. Although ground breaking at the time, these FFCs became problematic with delamination due to time and heat. The solder to pin ribbons were less problematic but these were also found to delaminate. The quick fix for these solder to pin ribbons was to remove the laminate, and put a condom on the wires (shrink tube or hollowed 26g wire sheath) and reinsert back to each header. The best fix is to replace #9-13 ribbons.

    Testing: We have used six C32 units in our beta testing. Two free standing units without ever being in a wooden cabinet, 3 units always inside a wooden cabinets and 1 unit inside a wooden cabinet that would sit on top of a MC2205 also in a wooden cabinet. It appears those C32s that were placed inside a cabinet showed severe delamination to include the solder to pin cables due to excessive internal heat. The most severe case of delamination was the C32 in a wooden cabinet, sitting on top of the MC2205 also in a wooden cabinet. The freestanding units not in a wooden cabinet to a lesser degree suffered FFC delamination as well but not evident until the FFCs were actually handled, unplugged and reinserted.

    I will keep this site posted of updates. I am shooting for an August launch for the FFC kit of 8 FFCs and possibly the 5 solder to insert ribbons. NOTE: You must remove the headphone amp module to facilitate FFC #3-6 install.


    FFC Location and Description Final 6 April.jpg
     
    Last edited: Apr 28, 2016
    ossidian likes this.
  3. CohibaJoe

    CohibaJoe AK Subscriber Subscriber

    Messages:
    2,483
    Location:
    Central Jersey
    Great News!!!!!!

    I have from last posted completed my C32 Recapped. 2 Cables have minor delaminate at the ends. Cannot wait until this kit is released.
     
  4. Gregory

    Gregory Soundco Kid Subscriber

    Messages:
    2,763
    Location:
    Potomac Falls, Virginia
    Very good work there!!

    Would like to summarize and restate TWO points you've made above.

    1. severe delamination.. due to excessive internal heat;

    2. not evident until.. actually handled, unplugged and reinserted.


    Handling (disconnecting-reconnecting) old ribbons especially tears them up.

    -Gregory

    p.s. am VERY upset that Comcast discontinued there Webspace service for broadband customers, their brilliant move has wiped out every photo, graphic, spreadsheet, etc. posted here over the last 8 years. Fortunately was able to SAVE as full HTML every significant thread as a local web page. Maybe someday they can be restored. Hey that's a good word.. restored!!
     
  5. Hofvox

    Hofvox New Member

    Messages:
    10
    We are getting closer to completing the FFC Kit. The biggest hurdle was getting the Legal Department of McIntosh Labs Inc. to give our literature the once over. They wanted to be sure there was a disclaimer: "McIntosh" is a registered trademark of McIntosh Laboratory, Inc., which is not affiliated with, nor responsible for this product." Manufacturing is completed and now off to packaging.

    We received our Solder to Pin (S2P) cables and the packaging turned out really nice. The photo shows the actual pack and next to it the contents. We were not able to actually print on each S2P cable like the FFCs but the instructions are very simple. In fact, you can't make a mistake with any of these cables as either they won't reach or you can't put a 5 pin into a 4 pin. In our research, the S2P cables in extreme cases delaminated by shedding their outer mylar coating and exposing the wires. Note: Each S2P cable requires that one end to be solder on a board and the other end to be attached to the supplied Screw Block Terminal Connector which is then inserted into the receiving board's header. The terminal block provides greater surface contact vs the original design of a single wire inserted into the header. One could just replace the old header and solder in place the Screw Block Terminal Connector. There is a polarity strip on each S2P for ease of identification.

    I will post the FFCs when they arrive and it looks like we will be on time for the August launch. We are tweaking the price point and trying to keep costs down so stay tuned. Thanks everyone.

    FullSizeRender 3.jpg Delaminated 5 Pin  ribbon.jpg IMG_8256.JPG
     
    Last edited: Jun 8, 2016
    Matte Grey likes this.
  6. Hofvox

    Hofvox New Member

    Messages:
    10
    Yes ! Today is Christmas for us........... the FFC kits are completed and packaged. The photos show what the buyer will receive:
    1. Printed flyer and on the backside, information about the FFC project.
    2. Printed 8x10 color layout of the C32 and on the back the Identification of FFCs and Solder to Pin jumper cables.
    3. Small packet that contains the 5 Solder to Ribbon (S2R) jumper cables with 5 Screw Terminal Block Connectors.
    4. FFC packet that contains the 8 FFCs each identified with Number and the boards they attach to.

    Each kit will be shipped Priority Mail small box. We will begin shipping in late August and possibly sooner.

    IMG_8455.JPG IMG_8456.JPG S2P.jpg IMG_8453.JPG IMG_8454.JPG IMG_8452.JPG
     
    ossidian likes this.

     

    Please register to disable this ad.

  7. CohibaJoe

    CohibaJoe AK Subscriber Subscriber

    Messages:
    2,483
    Location:
    Central Jersey
    :angel:......Cannot wait for this.
     
  8. Kayem

    Kayem AK Subscriber Subscriber

    Messages:
    3
    Is this kit available for purchase yet, if so please let me know how to obtain one.
     
  9. lbcgav

    lbcgav AK Subscriber Subscriber

    Messages:
    894
    Location:
    Arcadia, CA
    They're being sold on eBay, but I'm not sure you can purchase them elsewhere.
     
  10. 62caddy

    62caddy Trust but verify Subscriber

    Messages:
    9,914
    Location:
    NEPA
    The listing says only 200 kits will be available.

    Wondering if I should buy a set to keep on hand...:idea:
     
  11. Kayem

    Kayem AK Subscriber Subscriber

    Messages:
    3
    Thank you Ibcgav

    I have found them on Ebay and placed an order.

    62 Caddy

    Very nice ride..........Might not be a bad idea and If the cables are constructed to the specifications Hofvox states in his description it will be a very long time until they will need replacing.
     

     

    Please register to disable this ad.

  12. slowpat

    slowpat Slowly but surely.... Subscriber

    Messages:
    4,100
    Location:
    SF Bay Area, CA
    Hi Kayem - what's the verdict?? Everything as expected? Beyond expectation? I have two C32's here, one with lamination, and the other still ok....
     
  13. Kayem

    Kayem AK Subscriber Subscriber

    Messages:
    3
    Hello Slowpat,

    I ordered the kit on Ebay and it came faster than expected. Hofvox contacted me via email and let me know when the order was processed and when it shipped.

    The kit arrived and was exactly as advertised and of good quality.

    The installation is pretty straightforward as all cables are numbered and it comes with documentation and pictures.
    My 32 had some delaminating cables that were visible with the cover off, but during the disassembly for re capping, cables that looked perfect went south when touched and the ones that looked ok had one or two trace issues.

    Be advised to do the full replacement the C32 must be dismantled, but it is not horrible just take your time and don't force anything. And you may want to do a full recap while you are in there.

    Bottom line is there are many different ideas for replacing these cables on this site and others, for me, finding this kit was the way to go as it saved me time and still leaves the C32 serviceable as you can still pull the boards if necessary.
     
  14. slowpat

    slowpat Slowly but surely.... Subscriber

    Messages:
    4,100
    Location:
    SF Bay Area, CA
    Thanks for the update. I think this kit is the way to go as well.....
     
  15. Hofvox

    Hofvox New Member

    Messages:
    10
    Folks,
    The C32 Ribbon Kit project has been accepted beyond expectations. In our post beta testing we sent samples to very well known McIntosh service centers for their feedback and every one of them came back with the best positive feedback we could have anticipated. We started out with 200 kits world wide and we are now down to about 35 kits available and sorry to say, we will not be making this kit again as the price has double from the USA manufacturer.

    Kudos to those who have purchased the kit and posted their feedback. If anyone has a C32 preamp, I would recommend the following: You "Must Have" as set of these cables as a back up. I would recommend that EVERY C32 Preamp out there will need this cable kit once any Flat Flexible Cable is touched.

    Again, thanks you for the feedback.
     
    Last edited: May 6, 2017
  16. dewickt

    dewickt Will fix about Anything

    Messages:
    3,401
    Location:
    Knoxville, TN
    Bought 4 kits and have used 2 with 100% results, leaves one kit for my C32 and one for shop use.
    It was a long wait for them to appear but well worth it.
     
    62caddy likes this.

     

    Please register to disable this ad.

  17. Searing75

    Searing75 AK Subscriber Subscriber

    Messages:
    399
    Got mine. Just waiting for some caps from Mouser, and I will be recapping and re ribbon cabling my C32!
     
  18. Hofvox

    Hofvox New Member

    Messages:
    10
    Hello folks,
    Just an update on the C32 Ribbon Kits. We had an enormous success with the kits, way beyond our expectation. Sales range from Italy, Japan, UK, Estonia, France, China, Canada and of course the USA. We are down to less than 20 kits available until the next production run starts in May or June of this year. The bad news is there will be a 28% increase from $150 per kit to around $192 per kit. Our USA manufacturer regretfully could not contain the price point near the 1st batch run. The kit includes the 8 flat FFC cables, 5 solder to pin jumpers, 5 insert screw down headers and plenty of documentation. I would like to thank everyone who has purchased this kit and especially those McIntosh service centers who have given these cables a 2 thumbs up.

    Note: At least 2 service centers have commented they would not perform electronic repairs on the C32 without replacing the ribbons. Also, it appears that replacing the ribbons is not as complicated as one would think but you do have to remove boards and almost a complete disassembly of the preamp.
     
    Bill Ferris likes this.
  19. Gregory

    Gregory Soundco Kid Subscriber

    Messages:
    2,763
    Location:
    Potomac Falls, Virginia
    This is very good news for the McIntosh community. No longer will the C32 be feared, shunned or devalued.

    Is the printed material available for download in a PDF doc?

    1. Printed flyer and on the backside, information about the FFC project.
    2. Printed 8x10 color layout of the C32 and on the back the Identification of FFCs and Solder to Pin jumper cables.


    -Greg
     
    62caddy likes this.
  20. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    2,313
    Location:
    France
    I build my kit myself and it don't cost me 192,00 usd for each !

    you do have to remove boards and almost a complete disassembly of the preamp. of course this is the best way to do it !
     
    CruzBay likes this.

Share This Page