SDA-1 upgrade (SDA-1A Signature)

Bobsama
Bobsama Posts: 526
edited September 2009 in DIY, Mods & Tweaks
I have a pair of SDA-1's and I was hoping to do the upgrade. Now, of course, 25 years after the fact, I am probably correct in saying that the upgrade kits are no longer sold. Even so, I was hoping to do the conversion. I have tweeters and I can still find the original MW6501 woofers on eBay, but I was wondering if anyone happened to have an actual parts list? I'm most interested in what particular dacron stuffing to use (particular thickness) and what the dowels (to plug the ports) should be--material-wise. Is wood good enough? Plastic? Rubber?

From what I gather...

1) Eight MW6501 midwoofers
2) Four SL2000 tweeters
3) Four? 18"x14" sheets of Dacron stuffing
4) Two 1"Dx0.75"L dowels
5) Carpenter's Glue
6) Two 2.5Ω 25W resistors
7) Normal tools; power drill, screwdriver, saw (would it be possible to use a jig saw and then sand/cut the remnant off?), soldering iron, 60/40 solder
polkaudio Monitor 5 Series II
polkaudio SDA-1 (with the SL1000)
TEAC AG-H300 MK III stereo receiver
beyerdynamic DT-880 Premium (600 Ω) headphones
SENNHEISER HD-555 headphones
Little Dot MK IV tube headphone amp
Little Dot DAC_I balanced D/A converter
Post edited by Bobsama on
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Comments

  • nooshinjohn
    nooshinjohn Posts: 25,446
    edited August 2009
    I have four good drivers you can get from me... shoot me a pm and we can work something out...

    Good luck with your project
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
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  • Bobsama
    Bobsama Posts: 526
    edited August 2009
    I'll keep that in mind. Odds are I won't do the conversion for some time now... I spent a bit of money on a pair of Monitor 5JR's and I'm moving back to a dorm pretty soon. I'd like to get a parts list et al together, so that I can be ready to do the mod later. I am hoping to do the conversion as well as refinish the cabinets and update the drivers--all at the same time. I know at least one of the woofers is an MW6600X, so perhaps tomorrow I'll lay down the cabinets and take inventory of the drivers, in addition to marking polarity.
    polkaudio Monitor 5 Series II
    polkaudio SDA-1 (with the SL1000)
    TEAC AG-H300 MK III stereo receiver
    beyerdynamic DT-880 Premium (600 Ω) headphones
    SENNHEISER HD-555 headphones
    Little Dot MK IV tube headphone amp
    Little Dot DAC_I balanced D/A converter
    · Share on FacebookShare on Twitter
  • nooshinjohn
    nooshinjohn Posts: 25,446
    edited August 2009
    shoot me 75.00 and you can have all four. I will toss in a 5th for free...
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
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  • Bobsama
    Bobsama Posts: 526
    edited September 2009
    nooshinjohn wrote: »
    shoot me 75.00 and you can have all four. I will toss in a 5th for free...

    I'll have to think about it. Money's tight now (after getting the 5JR's refunded on me and buying a full pair of M5-s2's). But thank you for the offer--if you still have them in two months, I'm almost sure that it'll be yes, but it's too soon to tell atm.
    polkaudio Monitor 5 Series II
    polkaudio SDA-1 (with the SL1000)
    TEAC AG-H300 MK III stereo receiver
    beyerdynamic DT-880 Premium (600 Ω) headphones
    SENNHEISER HD-555 headphones
    Little Dot MK IV tube headphone amp
    Little Dot DAC_I balanced D/A converter
    · Share on FacebookShare on Twitter