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View Full Version : SDA-1 upgrade (SDA-1A Signature)


Bobsama
08-31-2009, 12:23 PM
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
nooshinjohn
08-31-2009, 04:31 PM
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
Bobsama
08-31-2009, 11:16 PM
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.
nooshinjohn
08-31-2009, 11:51 PM
shoot me 75.00 and you can have all four. I will toss in a 5th for free...
Bobsama
09-17-2009, 11:22 PM
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.