Speakerplans.com Homepage
Forum Home Forum Home > General > General Forum
  New Posts New Posts RSS Feed - A Compression Driver Flat From 10 kHz - 20 kHz
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

A Compression Driver Flat From 10 kHz - 20 kHz

 Post Reply Post Reply Page  123 8>
Author
Message
Elliot Thompson View Drop Down
Old Croc
Old Croc
Avatar

Joined: 02 April 2004
Location: United States
Status: Offline
Points: 3864
Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Topic: A Compression Driver Flat From 10 kHz - 20 kHz
    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,
Elliot Thompson
Back to Top
ovidias View Drop Down
Registered User
Registered User


Joined: 03 April 2012
Status: Offline
Points: 32
Post Options Post Options   Thanks (0) Thanks(0)   Quote ovidias Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 8:25pm

JBL Selenium D220

http://www.jblselenium.com.br/marcas/produtossub.php?idLinha=40



Edited by ovidias - 25 July 2012 at 8:25pm
Back to Top
rish View Drop Down
Registered User
Registered User
Avatar

Joined: 18 June 2008
Location: Durban
Status: Offline
Points: 495
Post Options Post Options   Thanks (0) Thanks(0)   Quote rish Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 8:26pm
Hi Elliot.I use the faital pro 1" comp drivers and its one of the smoothest  i ever heard.

Rish 
Back to Top
MattStolton View Drop Down
Old Croc
Old Croc


Joined: 04 September 2010
Location: Walthamstow
Status: Offline
Points: 3638
Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 8:27pm
The Beyma Ribbon?
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
Back to Top
MarjanM View Drop Down
Old Croc
Old Croc
Avatar

Joined: 10 February 2005
Location: Macedonia
Status: Online
Points: 6744
Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 8:33pm
Flat enough?


Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
Back to Top
Elliot Thompson View Drop Down
Old Croc
Old Croc
Avatar

Joined: 02 April 2004
Location: United States
Status: Offline
Points: 3864
Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 9:05pm


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
Elliot Thompson
Back to Top
MarjanM View Drop Down
Old Croc
Old Croc
Avatar

Joined: 10 February 2005
Location: Macedonia
Status: Online
Points: 6744
Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 9:58pm
They all do that Elliot. You need to compensate that with your passive xover to boost the hf.
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
Back to Top
TONY.A.S.S. View Drop Down
Old Croc
Old Croc


Joined: 21 February 2007
Location: United Kingdom
Status: Offline
Points: 6878
Post Options Post Options   Thanks (0) Thanks(0)   Quote TONY.A.S.S. Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 10:05pm
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. 
Back to Top
MattStolton View Drop Down
Old Croc
Old Croc


Joined: 04 September 2010
Location: Walthamstow
Status: Offline
Points: 3638
Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 10:25pm

Originally posted by TONY.A.S.S. TONY.A.S.S. wrote:

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. 

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?
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
Back to Top
MessyM2k8 View Drop Down
Young Croc
Young Croc


Joined: 29 October 2008
Location: Norwich
Status: Offline
Points: 690
Post Options Post Options   Thanks (0) Thanks(0)   Quote MessyM2k8 Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 10:28pm
Originally posted by TONY.A.S.S. TONY.A.S.S. wrote:

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. 


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.
Back to Top
Muckerbarnes1 View Drop Down
Old Croc
Old Croc
Avatar

Joined: 20 March 2010
Location: Stroud
Status: Offline
Points: 2591
Post Options Post Options   Thanks (0) Thanks(0)   Quote Muckerbarnes1 Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 10:50pm
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.
Billy Dawg.
Back to Top
infrasound View Drop Down
Old Croc
Old Croc


Joined: 13 May 2011
Location: Brizzle
Status: Offline
Points: 2178
Post Options Post Options   Thanks (0) Thanks(0)   Quote infrasound Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2012 at 10:55pm
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
Back to Top
 Post Reply Post Reply Page  123 8>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.063 seconds.