Home » Sponsored » Pi Speakers » H290C and JBL LE14H-3
H290C and JBL LE14H-3 [message #79347] Fri, 07 February 2014 13:12 Go to next message
BHamm is currently offline  BHamm
Messages: 4
Registered: January 2014
Location: Roseville, California
Esquire
Hello all. My first post here.

I am hoping to finish an old project. I have the JBL LE14H-3 that I want to pair with the H290C and DE250 driver. I will use a modified econowave x-over which lowers the crossover frequency to 900Hz for the LE14. My question is will the H290C play down that low without distortion or break-up? I have not bought waveguides or CDs yet due to my apprehension. Any thoughts?

BHamm
Re: H290C and JBL LE14H-3 [message #79358 is a reply to message #79347] Sat, 08 February 2014 16:04 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)
Hard to find specs on the LE14 away from it's Array, or as a sub-woofer, but the rubber surround perhaps means a lot of xmax and a lower efficiency than you might want to pair with a compression driver.

JBL crosses it at 300Hz as a sub, the DE-250 Fs is 1,000 Hz. You must have information I can't find to want to do this?
Re: H290C and JBL LE14H-3 [message #79359 is a reply to message #79347] Sat, 08 February 2014 16:07 Go to previous messageGo to next message
BHamm is currently offline  BHamm
Messages: 4
Registered: January 2014
Location: Roseville, California
Esquire

I may have answered my own question. I found this graph from another website:

Looks like it doesn't start tapering off until 850 Hz or so.

It was a toss up between the H290C or SEOS-15.

index.php?t=getfile&id=1411&private=0


  • Attachment: image.jpg
    (Size: 298.97KB, Downloaded 3421 times)
Re: H290C and JBL LE14H-3 [message #79360 is a reply to message #79347] Sat, 08 February 2014 16:38 Go to previous messageGo to next message
BHamm is currently offline  BHamm
Messages: 4
Registered: January 2014
Location: Roseville, California
Esquire
index.php?t=getfile&id=1412&private=0Here is a freq response I found for the JBL.

Looks like it will play high enough for the 2-way speaker I hope to build.

  • Attachment: image.jpg
    (Size: 232.61KB, Downloaded 3423 times)
Re: H290C and JBL LE14H-3 [message #79476 is a reply to message #79360] Mon, 17 February 2014 09:06 Go to previous messageGo to next message
maxserg is currently offline  maxserg
Messages: 1
Registered: February 2014
Location: Montreal
Esquire
The freq resp in on axis for the LE14. No shure it would go higher than 500/800Hz, you would need a horn that goes lower. The dispersions need to be almost the same for the 2 components at xover point.
Re: H290C and JBL LE14H-3 [message #79477 is a reply to message #79476] Mon, 17 February 2014 10:43 Go to previous message
BHamm is currently offline  BHamm
Messages: 4
Registered: January 2014
Location: Roseville, California
Esquire
Thank you for the reply.

I guess I really won't know for sure until I have the equipment to accurately measure them. Until then I am shooting in the dark.

I am waiting on some parts to finish them, so I will have an idea soon.

If I can't make the JBLs play in a 2-way arrangement, I will sell off the drivers and buy some that will.

Many thanks,

BHamm


Previous Topic: Speaker stuffing
Next Topic: Restoring a 1951 Philco 5W mono console... Thinking a 7 Pi! (Have a few questions)
Goto Forum:
  


Current Time: Fri Nov 22 16:14:41 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