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my first 21inch build |
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stanley dj 
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Joined: 19 July 2013 Location: Ireland Status: Offline Points: 154 |
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 Topic: my first 21inch buildPosted: 27 May 2018 at 8:37pm |
     
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partya
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Joined: 06 September 2013 Location: New Zealand Status: Offline Points: 105 |
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Posted: 28 May 2018 at 3:00am |
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Very nice!
Which drivers are those? I am planing a similar build, though will likely use drivers sourced from contacts in China.
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Turn it up! Turn what up?
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stanley dj
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Joined: 19 July 2013 Location: Ireland Status: Offline Points: 154 |
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Posted: 28 May 2018 at 5:48am |
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This is custom driver from Czech republic build by AC akustica
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Contour
Young Croc 
Joined: 03 March 2004 Status: Offline Points: 625 |
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Posted: 28 May 2018 at 8:29am |
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do you have a spec sheet for this driver? It looks quite good, deep cone, large magnet and impressive frame.
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stanley dj
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Joined: 19 July 2013 Location: Ireland Status: Offline Points: 154 |
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Posted: 28 May 2018 at 10:11am |
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U can contact AC akustica directly they will make u any drivers to your spec for affordable prices RMS-2500W
impedance- on request Sensitivity-98,6dB/1W/1m Voice coil-125mm Fs-31,62Hz 20-49Hz on request, other parameters will change 2!!! Re-6,73ohm Le-2,5mH Qm-1,99 Qe-0,24 Qs-0,22 Vas-360 l Bl-37,5Tm Mms-189gr no-3,6% Sd-1661 cm2 Xmax-11,5mm Gap inductance1,35T Ceramics voice coil former Magnet weight-18kg/fer basket -Al Weight-28kg Edited by stanley dj - 28 May 2018 at 10:11am |
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Hemisphere
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Joined: 21 April 2008 Status: Offline Points: 2272 |
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Posted: 28 May 2018 at 10:32am |
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Interesting! Those specs look amazing tbh. If it's made as well as it looks I bet it sounds great. Do you know how the xmax rating is calculated for this driver?
Edited by Hemisphere - 28 May 2018 at 10:34am |
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jbl_man
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Joined: 12 January 2005 Location: London. Status: Offline Points: 11155 |
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Posted: 28 May 2018 at 11:09am |
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Amazing looking driver, it must be over 15 inches deep looking at it. 98.6db/w/m too?
Liking the orange frame, reminded me of the 1960's and 70's JBL specials they made for Fender. |
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Be seeing you.
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jbl_man
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Posted: 28 May 2018 at 11:20am |
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Did a quick google search,couldn't find them...only thing i could find was an article translated from Czech?
https://translate.google.com/translate?hl=en&sl=cs&u=http://www.muzikus.cz/pro-muzikanty-clanky/Zvukari-AC-Akustika~16~brezen~2002/&prev=search |
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Be seeing you.
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stanley dj
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Posted: 28 May 2018 at 11:31am |
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have no idea
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stanley dj
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Posted: 28 May 2018 at 11:33am |
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ac-akustika.cz also on facebook
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smitske96
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Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092 |
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Posted: 28 May 2018 at 12:09pm |
It does have a light cone, so that would be one explanation for that kind if sensitivity.
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jbl_man wrote: