CRS+ RestoMod

13

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  • xschop
    xschop Posts: 5,561
    Would be nice to find an obscure cast brass emblem, if they existed. The sanded top does match the billet theme, but not going there this time...

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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    Looking forward to hearing the Silver Dragons. They didn't come in 20 and 40uf, so the Black Dragons will be just fine.
    Hat's off to @VSAT88 suggestion. These still remain in the XS-8TLs. I tried a Clarity PX and CSA on their
    tweeter circuits and could not hear much a difference, just fantastic clarity. I will do the same for these when the time comes.
    Went with a 3 ohm wire wound resistor since I deleted the safety polyswitch. Had to mount it this way to keep it off the TL shunt cap cause the leads are short with longer bodies.

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    Don't take experimental gene therapies from known eugenicists.
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  • pitdogg2
    pitdogg2 Posts: 27,488
    Is that a Jantzen or Mundorf resistor?
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  • xschop
    xschop Posts: 5,561
    Green Dragons as VSAT would say....

    https://www.cinergyaudio.com/collections/resistors/products/bevenbi-3-0-ohm-10-watt-1-premium-audio-resistor-42-030
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    edited May 19

    What are the white inserts called?
    If I could find some with threaded bases and pronged inserts would be ideal...

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    Don't take experimental gene therapies from known eugenicists.
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  • F1nut
    F1nut Posts: 52,103
    Standoffs.

    You can replace with aluminum hex standoffs, which come in various lengths and various male/female versions.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • SCompRacer
    SCompRacer Posts: 9,137
    edited May 19
    You can get standoffs in plastic or brass too. Nobody may see them but you'll know they are there. Available in 4-40, 6-32, 8-32.....

    EDIT: Mouser has plastic barbed ones too.

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    https://www.mouser.com/ProductDetail/Heyco/10154F-P?qs=vHuUswq2%2BsxFzbMtOF2bBw==&mgh=1&utm_id=22410597967&utm_source=google&utm_medium=cpc&utm_marketing_tactic=amermsp&gad_source=1&gad_campaignid=22400569371&gbraid=0AAAAADn_wf3JE7FbfBrjtkEtwSMaGt0XJ&gclid=Cj0KCQjwlLDQBhDjARIsAPlIefFUJJxZJ8h9pu--8_zQ2iqWkRSkfSgeTVvBR_lUzjWRcMwZS0lvTJEaAlycEALw_wcB

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    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • xschop
    xschop Posts: 5,561
    But if they're metal, they could wear thru and short two adjacent traces.
    Don't take experimental gene therapies from known eugenicists.
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  • VSAT88
    VSAT88 Posts: 1,367
    Awesome as always brother! Thank you for the ultimate show and tell!
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  • F1nut
    F1nut Posts: 52,103
    xschop wrote: »
    But if they're metal, they could wear thru and short two adjacent traces.

    I've never heard of that happening, but they also sell nylon hex threaded standoffs, so you can sleep better at night.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • pitdogg2
    pitdogg2 Posts: 27,488
    edited May 19
    Dave @westmassguy sent M4 size for my stand off XO project for the RTA11 XO. Nylon hex stand off and nylon all thread with stainless M4 pan head machine screw/bolts to connect the stand offs to the binding post spool and XO board to the top of the stand off.
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  • SCompRacer
    SCompRacer Posts: 9,137
    edited May 19
    Is it OK to use metric in an older Polk speaker?
    :D

    I've got some 7C's I ought to get into.

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    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • Toolfan66
    Toolfan66 Posts: 18,258
    SCompRacer wrote: »
    Is it OK to use metric in an older Polk speaker?
    :D

    I've got some 7C's I ought to get into.

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    SOLD!!! :smiley:
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  • xschop
    xschop Posts: 5,561
    pitdogg2 wrote: »
    Dave @westmassguy sent M4 size for my stand off XO project for the RTA11 XO. Nylon hex stand off and nylon all thread with stainless M4 pan head machine screw/bolts to connect the stand offs to the binding post spool and XO board to the top of the stand off.

    Ordered an M4 kit.
    That one that resides right between the 2 large inductors had to be surgically removed.
    Will have to get crafty to redo that one. Gorilla glue aint budgin'.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    Settled on X-over bracket design. Ordered some stronger black oxide M4 low-profile button heads. They'll bolt to female end of standoffs thru the thicker acrylic plates and be electrically isolated. Don't trust the 35 y/o pcb coating.
    Installing a single stainless barrel nut with copper antiseize and a large solid brass thumb screw for the outside bling...

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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    edited May 22
    Started the drivers...

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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    edited May 22
    Stay focused...

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    Had some time and knocked out the brass
    grill pegs...

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    Made a couple extra rings 0.540" tall for some MW6500s...😁

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    Post edited by xschop on
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    Brass RDO's...

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    Don't take experimental gene therapies from known eugenicists.
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  • pitdogg2
    pitdogg2 Posts: 27,488
    I'm afraid to ask.....
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  • xschop
    xschop Posts: 5,561
    SCompRacer wrote: »
    Is it OK to use metric in an older Polk speaker?
    :D

    I've got some 7C's I ought to get into.

    m39r62aobxip.jpg

    Are those 7C's with SL1000's I see on the boxes?
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    pitdogg2 wrote: »
    I'm afraid to ask.....

    Yes, I put bacon on everything.
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    edited May 24
    About 0.050" clearance all around...

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    Don't take experimental gene therapies from known eugenicists.
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  • SCompRacer
    SCompRacer Posts: 9,137
    edited May 24
    Boxes say 7C but speakers have what looks like the sl2000 tweeters. Serial numbers of speakers match serial on boxes.

    Styrofoam stuck on corners, other wise in nice shape.

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    Post edited by SCompRacer on
    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • Gardenstater
    Gardenstater Posts: 4,841
    edited May 24
    The first year the 7C came out, it had the SL1000, then all the ones after that had the SL2000. According to @DeRod the enclosure walls are thicker on the 7C, than the 7B.
    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Onkyo A-8017 integrated
    Logitech Squeezebox Touch Streamer w/EDO applet
    iFi nano iDSD DAC
    iPurifier3
    iDefender w/ iPower PS
    Custom Steve Wilson 1m UPOCC Interconnect
    iFi Mercury 0.5m OFHC continuous cast copper USB cable
    Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
    Custom Vibration Isolation Speaker Stands and Sub Platform
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  • xschop
    xschop Posts: 5,561
    We'll see if the 0.020 sag is gone permanently in a couple days from this 6511.
    Used the weighted coil centering spud and heated the spider gradually. Its back to normal for now...

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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    edited May 24
    First of their species...

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    Post edited by xschop on
    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
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    Don't take experimental gene therapies from known eugenicists.
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  • xschop
    xschop Posts: 5,561
    I may go back with a finer grit...kj6am6nft7kf.jpg
    Don't take experimental gene therapies from known eugenicists.
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  • SIHAB
    SIHAB Posts: 5,645
    edited May 25
    :)
    Post edited by SIHAB on
    Speakers: Polk Lsim, ATC SCM19 v2, NHT SuperzeroSpeaker Cables: DH Labs, Transparent, Wireworld, Canare, Monster: Beer budget, Bose ears
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