A Compression Driver Flat From 10 kHz - 20 kHz |
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Elliot Thompson
Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5172 |
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Posted: 25 July 2012 at 7:50pm |
Possibly I am overlooking a particular brand or model, as it seems most difficult to find a compression driver that is flat from 10 kHz - 20 kHz.
Has anyone stumbled upon one? Best Regards, |
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Elliot Thompson
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ovidias
Registered User Joined: 03 April 2012 Status: Offline Points: 32 |
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JBL Selenium D220 http://www.jblselenium.com.br/marcas/produtossub.php?idLinha=40 Edited by ovidias - 25 July 2012 at 8:25pm |
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rish
Young Croc Joined: 18 June 2008 Location: Durban Status: Offline Points: 547 |
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Hi Elliot.I use the faital pro 1" comp drivers and its one of the smoothest i ever heard.
Rish
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MattStolton
Old Croc Joined: 04 September 2010 Location: Walthamstow Status: Offline Points: 4234 |
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The Beyma Ribbon?
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Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains" |
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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Flat enough?
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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Elliot Thompson
Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5172 |
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By flat, I mean a deviation no greater than +/-2 dB from 10 kHz – 20 kHz. Achieving a flat response from 10 kHz below is not hard to accomplish from a compression driver. The Selenium D 220 TI: – 10 dB @ 21 kHz The Beyma TPL 150: - 4dB @ 20 kHz The Faital Pro ???: Model Number The graph Marjan posted is around –6 dB @ 20 kHz (from 10 kHz – 20 kHz) I am surprise to see so many compression drivers declining above 10 kHz. Best Regards, Edited by Elliot Thompson - 25 July 2012 at 9:13pm |
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Elliot Thompson
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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They all do that Elliot. You need to compensate that with your passive xover to boost the hf.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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TONY.A.S.S.
Old Croc Joined: 21 February 2007 Location: United Kingdom Status: Offline Points: 6878 |
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I also think that a test should be taken to establish how far up the scale you can actually hear. It would be a shame to finally find something and realize that it was a pointless exercise.
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MattStolton
Old Croc Joined: 04 September 2010 Location: Walthamstow Status: Offline Points: 4234 |
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Perhaps I don't get out enough, but at my ripe old age, my hearing is only rolling off at 16KHz!!! Do I get a medal? |
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Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains" |
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MessyM2k8
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I did this test a couple of days ago using a signal generator and a JBL active speaker. I found i could hear easily upto 18kHz. |
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Muckerbarnes1
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Elliot could you establish a point to this exercise. Some are as we know awful. Some are great, and a tad of EQ is even better.
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Billy Dawg.
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infrasound
Old Croc Joined: 13 May 2011 Location: Brizzle Status: Offline Points: 2276 |
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Beyma CP21/22
Okay, it's not a compression driver per say. But it is ±2.5dB 10kHz-20kHz.
Edited by infrasound - 25 July 2012 at 11:02pm |
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