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dave1490
07-24-2008, 05:28 PM
hello i picked up a set of 375,s today :) and need to know the power handeling for a custom speaker cab im building,tryed to look on the net but no luck.thanks

speakerdave
07-24-2008, 05:37 PM
Depends on the crossover frequency. They take enough power to make you deaf, so for home use, just use an appropriate crossover slope and frequency.

For sound reinforcement you do need to be careful.

http://www.lansingheritage.org/html/jbl/specs/pro-comp/2440.htm

It would also matter if you have aluminum diaphragms (original or 2441) or were reloaded with more recent titaniums.

David

dave1490
07-24-2008, 05:53 PM
ya they got the titaniums,replacing my 2445,s with the 375,s crossed now at 500hz with a 24db slope.also i dont know if the horns i got for the 45,s will fit,might need a horn,s to load them properly.

speakerdave
07-24-2008, 06:03 PM
Yes, they definitely need to be on a horn appropriate to the crossover. 2445's and 375's will mount on the same horns.

dave1490
07-25-2008, 10:20 AM
do you know were i can get the spec,s on these drivers.thier not listed on the harman site.thanks

louped garouv
07-25-2008, 10:37 AM
check the link in post 2

toddalin
07-25-2008, 03:36 PM
And the answer, that no one provided..., is 60 watts. That's what it says in the JBL brochure. ;)

louped garouv
07-25-2008, 03:46 PM
yeah, but we all know that the amount of power the driver can handle (in real world terms) is dependent on things like crossover point and slope and diaphragm material, as speakerdave so graciously pointed out in post 2....

:blah:


you know? It's rarely a cut and dry type of thing....
:banghead:

dave1490
07-25-2008, 08:00 PM
these are the ones i got,thier a littel beat-up but the price was right im just hopeing thier not 2441,s with 375 end cap,s.any way to find out?thanks.


http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=170239161511

toddalin
07-26-2008, 01:18 PM
these are the ones i got,thier a littel beat-up but the price was right im just hopeing thier not 2441,s with 375 end cap,s.any way to find out?thanks.


http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=170239161511


The price was right for a "less than stellar pair" at $1,127/pr and the diaphrams don't even appear to match? :blink:

louped garouv
07-26-2008, 01:21 PM
ouch, from what i've read, i believe that the cracked throat may present some problems for you....


good luck!

aren't 375/2440 & 376/2441 (consumer/pro numbering schemes) pretty much the same drivers with different diaphragms?

John
07-26-2008, 05:44 PM
I would resell them and look for a clean pair of 2440,s or better yet 2441,s You should be able to snag a clean pair for $500-600. You might even get more then you paid for the 375,s? Ebay is where anything can happen!!!

But If your a collector of 375,s please ignore the above opinion.:o:

But if you are all about the sound find some 2440,2441,s:D

Val
07-29-2008, 05:29 PM
Here's a bulletin in addition to the above.

http://www.lansingheritage.org/images/jbl/specs/home-comp/375/page1.jpg

With regard to power, I run my LE15A/375/075 rig which uses the LX5/N7000 networks with a 100 watt amp. I usually don't turn it up beyond 80% in my living room. The 375 is so loud that I dropped an L-Pad on it's feed from the network so I can turn that sucker down. It out runs the Le15A and 075.

RKLee
07-29-2008, 05:48 PM
And the answer, that no one provided..., is 60 watts. That's what it says in the JBL brochure. ;)Yep, that is what my brochures says also. There is also a phenolic diaphragm model that has a restricted freq range of 300-7Khz that is rated at 120 watts.

scott fitlin
07-29-2008, 11:53 PM
The driver bodies are indeed 375,s, the end cap is the Signature Series Consumer version. The pro 2440 and 2441 have a chamfered end cap design.

The phragms in your drivers are not 2440/375 phragms. The 40/375 phragms had a double roll surround, looked like a little metal versuion of a woofer surround, the pleated diamond shapes in your phragms surround are the later 2441 phragms, and they look mto be aluminum to me, not Ti.

I prefer the 2441, but some prefer the 2440 diaphragm to the later improved 41. The reason being thge original 40/375 had a 9KHZ peak or so, and it was fairly broadband, whereas the 41,s improved surround moved the peak out to a higher freq, but is much more narrow band, and this, they say, is what causes the midrange nasties.

Having used BOTH diaphragms, the 40 has a slightly different tone then the 41, to my ears the 40 gave female vocals a shine and the 41 has a more percussive dynamic sound in the lower end of its opoerating range. They are both outstanding examples of the products of their time, and still today even. It will be up to you to decide what you prefer.

60 or 80 watts they will handle no problem, and you'll never push them to their limit, I tend think your ears could'nt take the volume with 60 watts going into each driiver.

Years ago, back in the late 70,s thru early 80,s we ran a DC-300A on 4 2441,s 2 per channel 8 ohm load, 75 watts per driver, and we didnt blow them. Later I swithced to a D-150A running six 2441,s 3 per channel 6 ohm load. Now I'm using a DC-300A on all six horns, but I had a McItosh 2125 and a 2200 on them, as well as a McCormack 300wpc amp, and I run 12DB slopes, 750hz. I dont blow horns. You are going to use 24DB slopes,your safe.