Hello all.
A friend wants me to refurbish a pair of the above speakers, the Yamaha ns30t. It appears the tweeters are blown on both of them. It's hard to find a replacement Yamaha ja0534 tweeter, much less anyone pair of them. They occasionally pop up on eBay but haven't for a while. Is there a equivalent tweeter I could use? 6 ohm resistance, and I think the crossover is 600/ 2.8.
Thank you for your patience and time if you have it.
A friend wants me to refurbish a pair of the above speakers, the Yamaha ns30t. It appears the tweeters are blown on both of them. It's hard to find a replacement Yamaha ja0534 tweeter, much less anyone pair of them. They occasionally pop up on eBay but haven't for a while. Is there a equivalent tweeter I could use? 6 ohm resistance, and I think the crossover is 600/ 2.8.
Thank you for your patience and time if you have it.
Here's a picture of the tweeter to serve as a bump to your thread:
Yamaha JA0534 tweeter from NS-30T speaker
It's a 1" titanium coated polymer dome tweeter. Difficult to suggest a substitute as the tweeter's technical specifications are proving elusive.
The speaker system impedance is quoted as 6 ohm: https://holthill.com/products/yamaha-ns-30t-natural-sound-bookshelf-speaker
Give the dimensions of the tweeter faceplate and the cut out aperture in the enclosure. That would help narrow down the search for a possible substitute tweeter that would at least get the speaker system up and running again.
I wouldn't invest too much cash in this endeavour because of the difficulty of ensuring compatibility.
Yamaha JA0534 tweeter from NS-30T speaker
It's a 1" titanium coated polymer dome tweeter. Difficult to suggest a substitute as the tweeter's technical specifications are proving elusive.
The speaker system impedance is quoted as 6 ohm: https://holthill.com/products/yamaha-ns-30t-natural-sound-bookshelf-speaker
Give the dimensions of the tweeter faceplate and the cut out aperture in the enclosure. That would help narrow down the search for a possible substitute tweeter that would at least get the speaker system up and running again.
I wouldn't invest too much cash in this endeavour because of the difficulty of ensuring compatibility.
Galu, thanks for the bump and the advice. You're right in finding specifications is completely impossible. There is a manual on sale on eBay for about 15 bucks but I don't know. All I need is simply the crossover frequency and the sensitivity of the speakers. I was talking to someone at Parts Express and they said they would need that information as well.
But I have emailed and talked to three or four parts stores for audio and all of them have no clue about this driver or what makes it tick. Interesting that there be like nothing out there on it. I wonder if I could actually just get in touch with yamaha?
But I have emailed and talked to three or four parts stores for audio and all of them have no clue about this driver or what makes it tick. Interesting that there be like nothing out there on it. I wonder if I could actually just get in touch with yamaha?
Since you are a new member I'd like to make sure that you've done the appropriate troubleshooting:
Have you eliminated the possibility of bad connections between crossover and tweeter, or looked for heat damage to crossover components?
Sometimes tweeters have a fuse or protection lamp in series that may have blown so check that out.
Have you measured the resistance of the tweeters with your ohmmeter to see if they read around 4 to 6 ohm as they should?
Sorry if I am stating the bleeping obvious!
I read elsewhere that someone got good results by mounting a Peerless 4 ohm tweeter on the Yamaha JA0534 tweeter faceplate.
I suspect that may have been a Peerless BC25SC06-04 25 mm Neodymium tweeter.
It has a high sensitivity that would allow you to pad it down to the level required.
You can check out its measurements here to establish if this mounting idea is indeed a possibility:
https://willys-hifi.com/products/peerless-bc25sc06-04-tweeter
I suspect that may have been a Peerless BC25SC06-04 25 mm Neodymium tweeter.
It has a high sensitivity that would allow you to pad it down to the level required.
You can check out its measurements here to establish if this mounting idea is indeed a possibility:
https://willys-hifi.com/products/peerless-bc25sc06-04-tweeter
