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Multi-Way Conventional loudspeakers with crossovers

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Old 21st November 2012, 11:35 AM   #901
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Quote:
Originally Posted by Legis View Post
Here are the sensitivity and linearity measurements done at 2,83V from the listening spot, ~2,5m away from the speakers. Both are done completely without eq, including no 6dB/oct dipole compensation, there is just LR4 low pass at 800Hz.

Im impressed with the output and efficiency. A row of 8's or 10's with an RD 50 may be the way I go.

What 8" driver is that? What are the specs (Fs, Qts, Vas)?

Thanks for sharing the results.
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Old 21st November 2012, 02:50 PM   #902
Legis is offline Legis  Finland
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Quote:
Originally Posted by SpinMonster View Post
Im impressed with the output and efficiency. A row of 8's or 10's with an RD 50 may be the way I go.

What 8" driver is that? What are the specs (Fs, Qts, Vas)?

Thanks for sharing the results.
Yep they are very voltage efficient, I have wired arrays to 3.2 ohm nominal impedance. The driver is Gradient Axis AXT-08, basically paper/kevlar cone version of the Dayton Audio RS-series with a slightly smaller xmax(I think it's smaller). Driver has been tested in 2011/3 Klang & Ton. Basically an accurate and punchy woofer with high sensitivity, low moving mass, strong motor and high Qms. Efficiency is about 92dB/w, qts 0.3, Mms 21 grams, Vas 50l, Le 0,4mH, voice coil diameter 39mm, xmax around +/- 4mm (+/- 5,5mm mathematical/realistic).

Last edited by Legis; 21st November 2012 at 03:08 PM.
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Old 23rd November 2012, 01:26 PM   #903
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That's a pretty sexy looking array. Well done!
Is that veneer a Pelin Burl?

Bob
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Old 23rd November 2012, 01:52 PM   #904
Legis is offline Legis  Finland
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Originally Posted by Bob in St. Louis View Post
That's a pretty sexy looking array. Well done!
Is that veneer a Pelin Burl?

Bob
No veneer, it's local birch plywood (2x24mm all the way), stained with water based dark mahogany and mildly french polished with amber shellac.
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Old 23rd November 2012, 03:13 PM   #905
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Wow, that's some very nice plywood! You're lucky to have such a material.
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Old 26th November 2012, 02:43 PM   #906
sraudio is offline sraudio  Lithuania
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Here are mine latest open baffles. Driven by current drive amplifier.
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Old 26th November 2012, 03:48 PM   #907
puppet is offline puppet  United States
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Nice sraudio. How would you define the sound character?
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Old 26th November 2012, 06:39 PM   #908
sraudio is offline sraudio  Lithuania
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Originally Posted by puppet View Post
Nice sraudio. How would you define the sound character?
As engineer I think it is not very wise trying to describe the sound character, but in a few words it is very dynamic and natural.
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Old 27th November 2012, 12:57 PM   #909
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Here's some of my OB's projects, Electrovoice SP12B and SP15 and PHY-HP.
Enjoy!
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Old 27th November 2012, 01:15 PM   #910
kendt is offline kendt  Canada
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Default My OB w.i.p.

Here is my latest. Not finished obviously but sounding very very nice. The tweeter is currently on the rear (wanted to audition for a while before cutting holes) The phase plugs shown are only temp. Waiting on the return of more favourable weather to finish.
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