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onform 26th July 2009 07:52 PM

Yamaha NS 15
There is a pair of these loudspeakers for sale in a local second hand store.

Does anybody know of this loudspeaker? It is a very old design and seems to be open baffle.

I can't seem to find any details on them on-line though so thought I would see if anyone on here could help.

some sort of on-line manual would be wonderful.

also how much do you think they would be worth, I'm unable to ascertain the quality of the drivers themselves as they have fixed front grills.



Geek 26th July 2009 08:05 PM

Any numbers on the basket? :confused:


onform 26th July 2009 08:14 PM

Sorry when I said they seemed to be open baffle what I meant was there are large slots cut into the sides of the enclosure and large openings cut into the rear but they have grill cloth covering the openings so I would not be able to see the numbering on the baskets.. Sorry if I seem not to know what I'm talking about but thats because I don'

Do you have some experience with these loudspeakers??

tomtt 26th July 2009 08:57 PM

this is the speaker, with the driver shaped like an ear.

onform 26th July 2009 09:09 PM

That's the one cheers.

Does anyone know what the general consensus was with this design, I suppose the fact that there has been nothing like it since should be some indication. was it a flop?

would the main driver have perished over all these years?

DAMIC 27th July 2009 11:30 AM


Friend of mine bought a pair last year. Two-way speaker, actually works as open baffle with 10cm frame, very fine midrange, bass and highs, not something special. Very sensitive, over 90dB. power is about 15w. Due to aging, big styro-phoam membrane simply evaporate, so the black plastic surface makes some kind of wrinkles - air pockets. Allegedly, there are very rare and were made primarily for early electric organs/pianos.

As said, midrange is very fine, probably due to big surface and my friend is planning to modify i.e., change the tweeter and add a new sub.

tomtt 2nd September 2009 02:48 AM

here are photos of one pair from japan

NS-152 -

tomtt 2nd September 2009 02:49 AM

Geek 2nd September 2009 03:06 AM

That thing is art... I'd LOVE to hear it! :D


CLS 2nd September 2009 03:27 AM


Originally Posted by tomtt (


40Hz - 18000Hz
98dB/W !!

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