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#1 |
diyAudio Member
Join Date: Jun 2004
Location: -
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I am looking for guite effecient (>90dB/W) small element for 400-20k range with very smooth frequency response to be used with big wave guide (15" - 38cm).
Most of the element I have found are something like 82dB/W and they have sharp edges in the response indicating possible resonances. Any proposals? |
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#2 |
diyAudio Member
Join Date: Sep 2009
Location: City Of Villans
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IF you find such a driver, many here would be interested. I dont think one exists, even the small fostex (ff85?) isnt that sensitive IIRC.
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Balancing the things I must do, with the things I'd like to do...This is a skill (or a luxury) amongst many that I do not possess. |
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#3 |
diyAudio Member
Join Date: Jan 2007
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Greetings. It seems like a compression driver would be the logical choice for low distortion, smooth response and high efficiency. Have you ruled that out?
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#4 |
diyAudio Member
Join Date: Feb 2004
Location: Kungsbacka on the Swedish westcoast
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Ingvar Last edited by ingvar ahlberg; 4th October 2012 at 01:13 PM. |
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#5 |
diyAudio Member
Join Date: Sep 2009
Location: City Of Villans
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a compression driver? At 400hz? The Tangband W2 800SL is a 2 inch inverted dome widerange driver, around 89dBW, with an Fs of 160-200hz. In sims ive done, i can practically cross at 400hz. The response is very flat, a 10db rise in the last octave. Thhs might work well in a suitable CD waveguide, and may mitigate the HF roll off.
BUT, that is an absolute minimum. If powerhandling and loud volumes are required, >95db, then perhaps a CD is a better bet, IF you can find one that has a low enough fs and the compromises higher up arent too great.
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Balancing the things I must do, with the things I'd like to do...This is a skill (or a luxury) amongst many that I do not possess. Last edited by mondogenerator; 4th October 2012 at 04:10 PM. |
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#6 |
diyAudio Member
Join Date: Apr 2007
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Faital 3F20 or 3F22 might be good...I don't know
![]() I like the more techy TB W3-1285 Sg http://www.tb-speaker.com/detail/1230_04/w3-1285sg.htm as it has a phase plug . What may disturb when positioned in a WG, but that is true in any case, it's the curvature of the external suspension, that may cause the very first diffraction .... an inverted suspension sounds better, I guess. Im' using a monacor SPX21 with a 8" WG, and I would like to try the SPX20, which has an inverted suspension. ![]() |
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#7 |
diyAudio Member
Join Date: Sep 2009
Location: City Of Villans
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lol Pico. I too would prefer the W3 1285SG, I have both these drivers and im VERY happy with both. Downside is the W3s sensitivity, which is quite low. At least a couple of dB less than the W2 800. The 2 inch TB is close to 90 dB which is why i bought 6 of them!
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Balancing the things I must do, with the things I'd like to do...This is a skill (or a luxury) amongst many that I do not possess. Last edited by mondogenerator; 4th October 2012 at 05:11 PM. |
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#8 |
diyAudio Member
Join Date: Apr 2007
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Does it heat at high volume ?
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#9 |
diyAudio Member
Join Date: Oct 2009
Location: white plains, ny
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The ScanSpeak 10F is very nice as well. The 4ohm version is close to 90dB and can take lots of power. I wonder if some kind of a phase plug can help with waveguide loading.
http://www.scan-speak.dk/datasheet/pdf/10f-4424g00.pdf |
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#10 |
diyAudio Member
Join Date: Jan 2007
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Yes. That's normal in the old (heritage) Klipsch world (K55V), as well as -some- Cornscala builds. Selenium D408Ti can do it -10db, and it has the sensitivity to throw 20db away here.
(Off-topic but although it's not that common, there are also compression drivers to drive a bass horn...) |
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