Hi Yevgeniy,
What is the bolt pattern of the waveguide? I mean the distance of the hole center to the center of the tweeter? 98mm or less for the 6 holes?
What is the bolt pattern of the waveguide? I mean the distance of the hole center to the center of the tweeter? 98mm or less for the 6 holes?
The mounting holes are not round but elongated, so that the largest diameter is 94 mm and the smallest is 90 mm.
Some experiments with a small waveguide for the BlieSMa T34B-4 tweeter:
https://hificompass.com/en/projects/horn/waveguide-wg104-xx/34-bliesma-t34b-4-t34d-4-tweeter
https://hificompass.com/en/projects/horn/waveguide-wg104-xx/34-bliesma-t34b-4-t34d-4-tweeter
I hope so, I believe there are many users of the A version while the B is obsolete 🙂
I developed this waveguide for myself and published the results. It is a non-commercial product.
The aluminum version doesn't interest me enough to spend time perfecting it🙂
The aluminum version doesn't interest me enough to spend time perfecting it🙂
Be is not obsolete. Materion passed on price increases to customers, some decided to cut those product lines entirely and shift to TPCD (think ScanSpeak), Bliesma continues to offer there Be products with the associated price hikes. You probably will not find cheaper Be drivers on the market anytime soon
The measurements of the 2.7" Beryllium dome midrange Yamaha JA-0801 (used in the legendary Yamaha NS-1000 loudspeakers):
https://hificompass.com/en/speakers/measurements/yamaha/yamaha-ja-0801
https://hificompass.com/en/speakers/measurements/yamaha/yamaha-ja-0801
The measurements of the 3" Beryllium dome Pioneer DS-047A midrange:
https://hificompass.com/en/speakers/measurements/pioneer/pioneer-ds-047a
https://hificompass.com/en/speakers/measurements/pioneer/pioneer-ds-047a
I’m on my phone so it’s difficult to pixel peep, but from what I can see, decent performance from these classic drivers…
The measurements of the 2.7" Beryllium dome midrange Yamaha JA-0803 (used in the legendary Yamaha NS-1000X loudspeakers):
https://hificompass.com/en/speakers/measurements/yamaha/yamaha-ja-0803
https://hificompass.com/en/speakers/measurements/yamaha/yamaha-ja-0803
Those Yamaha's are intriguing: text book performance until some 5kHz with very smooth diverging on and off curves and than @(around) 5kHz on- and off axis are coinciding again. The only thing I can think of is that at 5kHz only part of the 2.7" diaphragm is radiating, but then so well controlled it does not show in Z or Waterfall pics.
There is a metallic diffuser in front of the diaphragm which can be responsible for such a wide sound dispersion
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The diffuser suppresses the on-axis destructive resonance, without it, the on-axis dip around 5KHz would have been deeper.
Many years ago, I had the privilege of being able to listen to the Yamaha NS-1000M in a fellow DIYer and music aficionado's home , who lived in the next town from me. This gentleman took a chance, and opened up his lovely home to a couple of young 18-year olds. Apart from being a wonderful host, he single handedly introduced me to wonderful world of speaker building. We were listening to some other speakers, but later insisted that we listen to a pair of his NS-1000M.
I listened with raise eyebrows. The midrange was really the star of the show- it had that fine, delicate, just-there character of music, never soft, never aggressive, and when we turned up the volume, it never sounded too LOUD!
We were club music addicts of the late 1990s (or discothèque if you remember Giorgio Moroder, Jean-Michel Jarre, Sven Vath; or superclubs if you are a bit younger and remember Carl Cox, Richie Hawtin, Daft Punk etc) so the bass wasn't particularly impressive, but from around 500Hz upwards, I just could not fault it.
@HiFiCompass
Did you get the rest of the drivers from Pioneer or Yamaha (woofer and tweeter)?
One cannot help but wonder if the NS-5000, released in 2019 before the catastrophic COVID, represents 44 years of progress.
Orr is it classic hi-fi, reimagined...
Many years ago, I had the privilege of being able to listen to the Yamaha NS-1000M in a fellow DIYer and music aficionado's home , who lived in the next town from me. This gentleman took a chance, and opened up his lovely home to a couple of young 18-year olds. Apart from being a wonderful host, he single handedly introduced me to wonderful world of speaker building. We were listening to some other speakers, but later insisted that we listen to a pair of his NS-1000M.
I listened with raise eyebrows. The midrange was really the star of the show- it had that fine, delicate, just-there character of music, never soft, never aggressive, and when we turned up the volume, it never sounded too LOUD!
We were club music addicts of the late 1990s (or discothèque if you remember Giorgio Moroder, Jean-Michel Jarre, Sven Vath; or superclubs if you are a bit younger and remember Carl Cox, Richie Hawtin, Daft Punk etc) so the bass wasn't particularly impressive, but from around 500Hz upwards, I just could not fault it.
@HiFiCompass
Did you get the rest of the drivers from Pioneer or Yamaha (woofer and tweeter)?
One cannot help but wonder if the NS-5000, released in 2019 before the catastrophic COVID, represents 44 years of progress.
Orr is it classic hi-fi, reimagined...
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It is too early in frequency for any destructive resonances at 5 kHz.
Unfortunately, I had only these midranges for testing.
Unfortunately, I had only these midranges for testing.