repairing Yamaha NS-690 II speakers

[TimboW]

I have access to a pair of Yamaha NS-690 II speakers locally that are being sold off with a fault in one of the mids. The guy who owns them isn't quite sure what the problem is with it, and told me he'd pulled themid out and could see nothing wrong - it just won't work.

For $100 I thought they m,ight be a good buy if I can fix the midrange easily enough, as they speakers had an excellent reputation in their day for build and sound quality. However, if the mid needs replacing it could be a problem, as I can't find anyone who has them for sale (except for some guy on Ebay in Britain who wants a fortune to ship them to the USA).

If the midrange is faulty, could someone tell me where I could get a replacement, and roughly how much it might cost? Failing that, is there another manufactuer's speaker fairly identical in specification that I could use instead?

The other point I wondered about is whether there's a problem with the crossover in the speaker, and whether it could be an easy fix.

Any thoughts on the matter would be much appreciated.

[tomtt]

they may very well be-




http://64.233.179.104/translate_c?hl...D%26safe%3Doff


i can not get this to translate-

[tomtt]

http://64.233.179.104/translate_c?hl...D%26safe%3Doff

[TimboW]

Hi Tom

The heading is of course a jokey reference to the sites you suggested - nice pictures though!

Where on earth did you find them? Must have been some of the gobbyldook sites I skipped over while doing a seach myself.

Now if only I can find a place that sells the troublesome mid.

Thanks anyway.......Tim

[sdclc126]

Hey TimboW,

OK dumb question here - did you check with Yamaha? As of a few years ago they still had the beryllium mids and tweeters in stock for the NS-1000s - for about $200 + a pop as I recall. I have no idea if that means they have other replacement drivers for their vintage speakers, but it wouldn't hurt to ask.

The other place to check is eBay - I've seen drivers for the vintage NS series offered there numerous times. You'd judt have to be patient I guess.

Incidentally I've owned a pair of NS-670s since the late 70s - they've been my main speakers all that time. I know they won't last forever but I've never felt any need to replace them, and I'm sure you're on the same page with me there.

Glad to run into another "NS-er"!

[stephen Bishop]

Actually, no, I hadn't thought of trying the company as I thought the speaker was so long out of production that they'd have run out of replacement parts for them long ago. I'll give them a whirl.

Yes, I have been looking on Ebay. As I mentioned, the only person currently selling the item I need is in Britain, and he wants almost as much as the item is worth just for the shipping charge.

Thanks

[tomtt]

yahoo japan has things like this often

[tomtt]

and this

[sdclc126]

Ahhh...aren't they beautiful?

[stephen Bishop]

Hi again Tom,
You lost me there fella! I tried doing a search but couldn't find anything at all. Care to post the web address?

By the way, is the 'JA-0603' on one of the pictures the actual model number for the mid I'm looking for?

Thanks