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In Reply to: RE: Interesting Speaker find for $15.00! posted by Brian McGowan on September 30, 2014 at 19:26:16
The engineering and construction values of the NS-A636 were...umm... pretty bare-bones. Pop out the woofer & I reckon you'll find a single capacitor crossover to MR and HF drivers -- pretty nominal "three way" implementation.
The NS-A636 certainly didn't sound awful... but not great, either... so here's hoping your new Yamahas are better.
As an aside, Radio Shack once sold a version (of the NS-A636) as well, called the Optimus ST-S100 (see link below for a catalog page scan from www.radioshackcatalogs.com).
... and my prophylactic apologies if I have needlessly besmirched the speakers YOU just got by assuming their guts are like the NS-A636!
I'd be interested to know what the innards look like if you're inclined to find out.
all the best,
mrh
Follow Ups:
The drivers of the RS speaker are not the same. Possibly just a knockoff.
Don Brian Levy, J.D.
Toronto ON Canada
A friend of mine who worked for Radio Shack said they were made by Yamaha for them,but did indeed use cheaper drivers!Mine use different Drivers as well compared to the NS-A636 except for the Tweeter!You can see that by looking @ the pictures of the A636's & my A738's.They do sound somewhat similar but with slightly less Bass on the A738's!Also with the A738's the Cabinets seem to be thinner & have a hollow sound when you tap on the sides!But for what I paid they mate well soundwise & look good together as well!
I found this site & I may try some of Lee's Suggestions!There must be more then 1 cap & I sure would like to know what he replaced them with! When I do take them apart I will list the cap(s) & there values,so I can get some advice as to what I could replace them with!Don't want to do any wild or expensive mods,but the caps & fiberglass insulation sounds all right!
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