AudioRoundTable.com: Pi Speakers » JBL 4648A with SET's?

Home » Sponsored » Pi Speakers » JBL 4648A with SET's?

Show: Today's Messages :: Navigator :: Polls
E-mail to friend

dual 15's [message #39354 is a reply to message #39347]

Thu, 05 December 2002 05:39

Sam P.
Messages: 307
Registered: May 2009

Grand Master

as in the JBL 4648a-8 systems have a response notch around 820 Hz. that is shown on the jbl data sheets. The same "notch" is also shown on their 4638 system data, using a pair of 2035H's. Can't cheat physics.

JBL network schematics for dual woofer systems often use a LP inductor value of about twice the "upper" woofer one for the "lower" woofer, "to promote a smoother response" in the xover region. You might try running the upper woofer "fullrange" or pseudo-1st up to 1.6kHz., and "choke" the lower woofer around 800Hz. Sam

Report message to a moderator

[Message index]

		JBL 4648A with SET's? By: jlharden on Wed, 04 December 2002 06:07
		Re: JBL 4648A with SET's? By: BillEpstein on Wed, 04 December 2002 07:14
		Re: JBL 4648A with SET's? By: jlharden on Wed, 04 December 2002 08:56
		Re: JBL 4648A with SET's? By: Wayne Parham on Wed, 04 December 2002 12:23
		Re: JBL 4648A with SET's? By: jlharden on Wed, 04 December 2002 18:42
		Tube friendly JBL's By: Wayne Parham on Wed, 04 December 2002 22:28
		Re: Tube friendly JBL's; Only In Ohio By: BillEpstein on Thu, 05 December 2002 02:27
		Re: Tube friendly JBL's By: mikebake on Thu, 05 December 2002 05:31
		dual 15's By: Sam P. on Thu, 05 December 2002 05:39
		Re: dual 15's By: jlharden on Fri, 06 December 2002 10:57
		Re: JBL 4648A with SET's? By: mikebake on Wed, 04 December 2002 13:46
		Re: JBL 4648A with SET's? By: jlharden on Wed, 04 December 2002 18:48
		4648a-8 z peaks By: Sam P. on Thu, 05 December 2002 09:30
		Re: 4648a-8 z peaks By: jlharden on Thu, 05 December 2002 10:27
		yes, By: Sam P. on Thu, 05 December 2002 13:13

Previous Topic:	1 PIs in 9ltr sealed box ??
Next Topic:	pi 7 and suitable driver,and wayne,dont u get tired of this lol

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Nov 15 09:18:16 CST 2024