Home » Sponsored » Pi Speakers » Eminence Omega pro 18" --cant find box volume
Eminence Omega pro 18" --cant find box volume [message #36204] Wed, 01 May 2002 15:54 Go to next message
Mikeyboi is currently offline  Mikeyboi
Messages: 2
Registered: May 2009
Esquire
Hello- I need some serious help- I've been trying for days to tune a box for an Omega pro (Eminence) 18" driver- I need it to go down to at least 38hz -3db up to say 300Hz, its for bass guitar. I cant seem to design anything below 58hz -3db and thats with a 2.253ft^3 enclosure tuned to 47.63 hz. Everything I try puts a hell of a spike at 58 hz and a 1.2db dip at 100hz. Its getting frustrating. Any help would be extremely appreciated. Thank you so much- have a great day
Mikeyboi
Re: Eminence Omega pro 18" --cant find box volume [message #36206 is a reply to message #36204] Wed, 01 May 2002 16:06 Go to previous messageGo to next message
freddyi is currently offline  freddyi
Messages: 48
Registered: May 2009
Baron
Hi

going by filter theory a jammed BW would be ~4.1cu.ft and tuned to 47Hz with f3 of 47 and Be4 of same volume tuned to ~38hz with f3 of about 58hz - did you simulate for boxes in ~4-5cu.ft. range tuned about 1/3-1/2 octave above 30hz? - one guy says a Karlson's front chamber air mass will effectively shift qes upwards and fs downwards allowing a different response to be achieved than with regular VB

Freddy

Re: Eminence Omega pro 18" --cant find box volume [message #36207 is a reply to message #36204] Wed, 01 May 2002 16:10 Go to previous messageGo to next message
Adam is currently offline  Adam
Messages: 419
Registered: May 2009
Illuminati (1st Degree)
I can't do a simulation for you right now because my computer is messed up, but I'll tell ya right now that the low Q of the omega 18's will make them very difficult to get deep bass response out of them.

However, if you send me an e-mail I'll get back to you as soon as my computer is running properly again.

Can you use any different drivers than the omega 18"?

Adam

Re: Eminence Omega pro 18" --cant find box volume [message #36211 is a reply to message #36204] Wed, 01 May 2002 17:01 Go to previous messageGo to next message
LuxmanLover is currently offline  LuxmanLover
Messages: 164
Registered: May 2009
Master
150 L tuned to 40 Hz will go to an F3 of 38Hz with a 1.3 Db dip...considering most people need 3Db to hear any difference that's probably as good as it's going to get with that driver.
Kelly
Re: Eminence Omega pro 18" --cant find box volume [message #36224 is a reply to message #36206] Thu, 02 May 2002 15:08 Go to previous message
Mikeyboi is currently offline  Mikeyboi
Messages: 2
Registered: May 2009
Esquire
My cab is about 4.812 ft^3 tuned to 47hz-- Still can't get a good flow- Is it true that the human ear cant perceive anything under 3db in change? - Its frustrating paying 200 clams for a speaker and not getting the performance youd expect- I know better now.

Thanks so much for your help everyone

Previous Topic: Question for wayne
Next Topic: Plans needed
Goto Forum:
  


Current Time: Mon Nov 25 17:56:47 CST 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest