I agree. I think what we're seeing here is that the software is getting to the point where JBL and Celestion can extend the bandwidth of compression drivers without resorting to the use of beryllium. If you take apart a bunch of compression drivers, you'll notice that things haven't changed a whole lot in the last 20 years. But ring radiators have made real progress in the last decade. Also interesting to see the industry converge on rings. We now see JBL, BMS, Celestion, Tymphany, Scan Speak, SB Acoustics, and Eminence selling them.
While reflecting on this driver, the Paraline, the SAW lens as well as the Funktion One Axe Head crossed my mind.
Then I came across this thread.
There are very few fields in la-la-loudspeaker land left for you to explore
Then I came across this thread.
There are very few fields in la-la-loudspeaker land left for you to explore
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Here is some more info: Innovations: Celestion AXI2050 Axiperiodic Compression Driver | ProsoundNetwork.com
An externally hosted image should be here but it was not working when we last tested it.
Another modern take on the WE-555:
Some features:
Lightweight under-hang 2” Aluminium ribbon voice coil (ccaw) on paper former (available with 8 ohm and 16 ohm resistance)
Extremely ridged high modulus carbon diaphragm with glass fiber suspension for optimal behavior over a wide frequency range. (Carbon diaphragm is lighter and stiffer compared to aluminum or titanium diaphragm).
Frequency Range:
50 Hz to 5 kHz ± 3db
Recommended Crossover:
80 Hz or higher, 12 dB/octave minimum
And some plots:
1. Frequency response coupled to a 25.4 mm (1 in) diameter terminated plane wave tube (PWT)
2. LAMAR M1-8 (Blue Line) vs. WE 555 REPLICA (Black Line)
Measurement with 1W input on rated impedance @ 1m distance on axis coupled to a WE15A horn.
Some features:
Lightweight under-hang 2” Aluminium ribbon voice coil (ccaw) on paper former (available with 8 ohm and 16 ohm resistance)
Extremely ridged high modulus carbon diaphragm with glass fiber suspension for optimal behavior over a wide frequency range. (Carbon diaphragm is lighter and stiffer compared to aluminum or titanium diaphragm).
Frequency Range:
50 Hz to 5 kHz ± 3db
Recommended Crossover:
80 Hz or higher, 12 dB/octave minimum
And some plots:
1. Frequency response coupled to a 25.4 mm (1 in) diameter terminated plane wave tube (PWT)
2. LAMAR M1-8 (Blue Line) vs. WE 555 REPLICA (Black Line)
Measurement with 1W input on rated impedance @ 1m distance on axis coupled to a WE15A horn.
Attachments
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I suspect BMS's patent has run out.
BMS was founded in '94 to produce and market their patented annular diaphragm compression drivers.
At some point even JBL used re-badged BMS.
Thanks for the info it looks like a good alternative to the BMS 4592. I wonder who is using all the supply up? or perhaps production problems?
ah somewhat off the suggested price here:
Celestion Axi2050 - Speakerplans.com Forums
£1000 makes more sense though as its huge and has more complex machining than a typical compression driver.
