Yamaha NS 690 qusetion....

[Nashou66]

Crossovers are easily removed from the rear panel. Its a plastic modular crossover assembly with the binding spring clips attached.

Good to know, however bad news, after I removed the tweeters and measured them that are fried. Readings into the Mohms

On the hunt for new tweeters.

In the mean time I'll pull the cross overs and give those a looksy .

Nashou

 

[saltwater]

Did you take the diaphragm off and see if the leads to the voicoil are broken? Or voice coils burnt?

The wires tend to break underneath the blue circle....

 

[Nashou66]

I did. I scraped some of the magnet wire enamel off between the inside rim and coil to test continuity.
No luck on one. Will try the other one this week end.

There is guy on Ebay that does voice coil replacements. Anyone do business with them?

Athanasios

 

[avionic]

There is guy on Ebay that does voice coil replacements. Anyone do business with them?

I think its the same guy who does " shifted magnets as well.

 

[Nashou66]

Well no need for the rebuild. I got a pair at auction for a measly 103 bucks.
These are from a NS 670 JA-5090 same as used in the 690.

Lets hope they work.

Isn't there a safety fuse mod you can do to protect the tweeters or is the failure just due to age?

Athanasios

 

[Jazzmuso]

Your thread got me to listen to the old ladies again. They are singing beautifully - I forgot how good they can sound. using J River media player and flac file based music. Nice combo with the old and the new

 

[avionic]

Dammit you guys.Now I'm going to have to get my woofer fixed. Pronto..!

 

[avionic]

I think its the same guy who does " shifted magnets as well.

<--------- This guy quoted me a benny shipping included to repair a shifted magnet. But that may have been a year ago.

 

[SuperLead100]

When a tweeter comes up for sale. I'll snag it. I too have a set of Mk1's. They belonged to my father. Sadly a shifted magnet has invoked a " Down for maint." sign on them.

Jeez Dave! I know you're a busy guy but I'd have thought you'd have that woof fixed by now...it's been a while hasn't it? But then again when you're running 1000's .....I guess they can wait

 

[avionic]

The 690's are not a real priority. Now if either set of my 1000's crap out. That may change the priority.

 

[mustangsqd]

Just for reference, I have used the speaker repair services of Michael Marks for my NS 670, 690MK1 and 1000M's,
and have always been happy w/ the quality of his services.

He specializes in NS1000 series, and may be able to help you find the correct driver for your 690's

He is on ebay:
https://www.ebay.com/itm/Yamaha-NS-...660715?hash=item41ccd9332b:g:mtUAAOSwKoRZaODw

 

[LinhTrade]

Hi AK family member.
I just brought the set of NS-690ii for $75. I am not sure if the woofer have been refoam yet but it looks very weird. I talk to a person after brought it and he claim that he's the original owner and never done any thing with it. Can you please let me know if this is an original surround/dust Cap?
Greatly appreciate it.