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JBL E-130/E-140 help [message #39377]

Fri, 06 December 2002 15:59

Don17
Messages: 20
Registered: May 2009

Chancellor

Hello!!!!!!!!!!! My name is Don, I'm 17 and have become deeply involved in sound reiforcement. I Have 3 JBL E-140's and a Single JBL E-130 that I would like to make low frequency cabinet. I'm planning to make a box that is 6 cubic feet and tuned to 40 Hz. They will be loaded with Two 15's per box. Now the problem is that there is going to be an enclosure with two different drivers (JBL E130/E140). The JBL E130 has a higher fs and has a small XMax. What should i do about having these two different drivers in the same box?????

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Re: JBL E-130/E-140 help [message #39378 is a reply to message #39377]

Fri, 06 December 2002 20:16

LuxmanLover
Messages: 164
Registered: May 2009

Master

Bass drivers should each be housed in their own enclosure for best results. E series JBL's are designed as musical instrament drivers not PA drivers, they will tend to color the sound more than a 2225 or 2226 will. However is they are all you have to work with then I guess you run with it, but put them all in their own boxs. Plan "B" would bew to trade the 4 for 2 2226h's, they will be plenty loud, trust me.

Kelly

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Re: JBL E-130/E-140 help [message #39379 is a reply to message #39377]

Fri, 06 December 2002 21:16

Wayne Parham
Messages: 18783
Registered: January 2001

Illuminati (33rd Degree)

One could model a system having two different woofers and a single acoustic chamber, but it is possible that the tuning that works well for one motor is not optimal for the other. For that reason, I'd generally suggest that two different woofers be installed in two separate motor chambers.

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Re: JBL E-130/E-140 help [message #39381 is a reply to message #39378]

Sat, 07 December 2002 06:08

LuxmanLover
Messages: 164
Registered: May 2009

Master

Something else to keep in mind with sound reinforcement is to use the BIGGEST amps you can find, 2x power rating of drivers isn't out of line. You never want to allow your amps to clip running at the power levels you will be using, much better to let the drivers see too much power than not enough with a bunch of distortion in the signal, sure fire way to fry a speaker.Ideally you want an amp that is big enough that it's basically idling the whole time , nice clean signal. JBLPro.com has some good tech articles about PA aplications.
Kelly

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Re: JBL E-130/E-140 help [message #39384 is a reply to message #39381]

Sat, 07 December 2002 17:25

Don17
Messages: 20
Registered: May 2009

Chancellor

I dont have to worry about power because I have two power amps capable of delivering 1000 watts @ 4 Ohms per channel.

Thanks

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Re: JBL E-130/E-140 help [message #39390 is a reply to message #39384]

Sun, 08 December 2002 07:26

LuxmanLover
Messages: 164
Registered: May 2009

Master

Tell me their not Pyramid or Peavey!
Kelly

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Re: JBL E-130/E-140 help [message #39396 is a reply to message #39390]

Mon, 09 December 2002 07:33

Don17
Messages: 20
Registered: May 2009

Chancellor

Actually, they're from a company named Phonic which is a company from overseas. They make high quality Pro audio gear that can go against alot of Qsc mid- priced amps without costing as much. Also I finished the enclosures last night. I used them with an active crossover where they'll reproduce 40Hz-100Hz. They did extremely well for musical instrument speakers. They didnt color the sound up at all!!!! They sound the best when I put both cabinets side by side, where the low bass became very pronounced. I think that's the way i will set them up whenever I have a gig with a band.I'll include the link to Phonic's website where you can see the amps.
When you get there look up amps: Max2500 And XP3000

http://www.phonic.com

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Re: JBL E-130/E-140 help [message #39397 is a reply to message #39396]

Mon, 09 December 2002 08:06

LuxmanLover
Messages: 164
Registered: May 2009

Master

I've never heard of that brand of amp...hope they work out well for you.....question ...do your E series JBL's have silver or black dust covers?
Kelly

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Re: JBL E-130/E-140 help [message #39409 is a reply to message #39397]

Mon, 09 December 2002 16:24

Don17
Messages: 20
Registered: May 2009

Chancellor

My E series JBL's have aluminum Dust caps. I rather have paper because obviously, I dont need the "extended" response. Also I think, Personally, that balck paper dustcaps would look much better.And about the amps, The company is just starting to sell in the U.S. but they have been around for 25 years..........
All my friends- musicians and sound guys alike are amazed at their quality and performance and even more amazed because of the fact that I payed only about $474.00 for each one!!!!!!!!!!!!!!!!!!!

-Don

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Re: JBL E-130/E-140 help [message #39410 is a reply to message #39409]

Mon, 09 December 2002 17:11

LuxmanLover
Messages: 164
Registered: May 2009

Master

The reason I asked about the dustcovers is that E series can only be reconed with E series, no mix and match for them, unlike some of the PA JBL drivers. So if they are recones at least they probably have the right kit in them. Which is a good thing!
Kelly

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