Pristine II restoration

home Forums General Discussion Pristine II restoration

Viewing 10 posts - 31 through 40 (of 40 total)
  • Author
    Posts
  • #749
    Stphotog
    Participant

    So i spent an evening playing with Brillance found i liked it at 3 o’clock and measured the resistance at 1.6ohms
    Does that sound right?

    #751
    chungjh
    Participant

    How did you measure the resistance?

    #755
    yoshi
    Participant

    Chungjh has a good point. You should be measuring across the variable pot. My reaction is that 1.6 ohms seems low. If that’s the correct measured value, I would only say that a fixed resistor will sound cleaner and more open that the measured equivalent on the variable pot. For a small cost, I might suggest you buy a few values, 4 and 3 ohms( 50 watt, non conductive) and the 4 ohm a try. If you want more treble, then consider to go down to a 3 ohm and solder that value in place.

    Good luck, I do look forward to your
    Feedback on the treble sound change.

    Ken

    #763
    Stphotog
    Participant

    I measured across the variable pot (I think I did that correctly. I will take a photo)

    #788
    Stphotog
    Participant

    Here is how i measured

    Attachments:
    You must be logged in to view attached files.
    #791
    yoshi
    Participant

    The test looks ok. Your call on inserting the resistor load. Again, my experience is that a new fixed resistor will sound more extended, and cleaner, than the pot, so you may not need to lower the R value down to less than 2 ohms to get your preferred HF extension. Not sure I would…

    #800
    Stphotog
    Participant

    I am re covering the pristines. Any mods to the panel recommended?

    Attachments:
    You must be logged in to view attached files.
    #803
    yoshi
    Participant

    Hello again:

    I am not aware of anything you could do on the uncovered panel.

    Could check if there is a copper diffusion ring on your set. I believe this a factory install. But, you should confirm whether you have it or not.

    I would remove all the stables before replacement fabric
    Of the fabric, to avoid tears when stretching it in place.

    Ken

    #804
    Stphotog
    Participant

    What does the copper diffusion ring look like?

    #805
    John V
    Participant

    The diffusion ring consists of copper foil that runs around the perimeter of the panel

    Attachments:
    You must be logged in to view attached files.
Viewing 10 posts - 31 through 40 (of 40 total)
  • You must be logged in to reply to this topic.