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Old 21st August 2005, 08:55 PM   #1
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Default What to do with a JBL Le8T ?

It's all in the title,

What can I do with my JBL Le8T, vented boxes, closed, TQWT ....
I have the passive radiators but i don't want to use them in the first time.

Does anybody have its specs ? There's some on lansing heritage website but there are not enough specs

Thanks to all
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Old 22nd August 2005, 03:43 AM   #2
bzdang is offline bzdang  Canada
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Build RCA-fan's backloaded horn cabinet, sounded insane with the LE-8TH in it. With 25w and corner-located it would pound me all the way to the other end of the house. Do you have two of them? Stereo, my gawd.
RCA-fan's gallery has the plans and some photos....
http://gallery.audioasylum.com/cgi/v...erImages=21168
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Old 22nd August 2005, 03:44 AM   #3
bzdang is offline bzdang  Canada
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specs for T and TH from JBL...

He designed for the Fostex 208sigma but I tried a number of drivers in one of the prototype cabinets including the LE-8TH.
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Old 22nd August 2005, 10:13 AM   #4
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Thanks for your response

But I can't use these specs there's not the name of each parameter.

Back horn ? It's big and designed for low qts and low bass speakers like fostex or lowthers doesn't it ? Does the Le8 perform well in these enclosures ?
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Old 22nd August 2005, 01:24 PM   #5
bzdang is offline bzdang  Canada
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Oops, it was late, here are the column headings.
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Old 22nd August 2005, 01:30 PM   #6
bzdang is offline bzdang  Canada
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And the parameter descriptions. The pdf is 3500k, too big to post.
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Old 22nd August 2005, 02:23 PM   #7
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You can find full specs here.

http://audionova.nu/docs/spkrdata.htm

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Old 22nd August 2005, 02:50 PM   #8
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The main thing is to listen to it...

The Le-8 has one of the best midranges in a cone speaker... I think it is the extension of the JBL D-208 in heritage...

It likes to have a big front baffle, btw... for flattest lower mid response.

Personally, I'd not try to use them for low bass, nor take them too high... but I would use them for a "3-way" system based on a very wide range "mid" taking it down to ~50-60Hz. and go up to 3-5kHz., supporting that on either end with a good sub and a high quality high efficiency tweeter on top....

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Old 22nd August 2005, 03:16 PM   #9
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I agree with bear. The LE-8T's I had were not up to todays standards for bass so you need a woofer. I had mine crossed over a little higher (8k I think) because the aluminum dust cap seemed to carry a lot of the highs and I didn't have a problem with beaming. All in all a very nice driver.

The surrounds went and I couldn't find a proper replacement and a recone up here in Canada was approximately $350.00 per driver. So I sent them south and haven't heard from the guy since. (Stephen Jove)

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Old 23rd August 2005, 08:42 PM   #10
Bill F. is offline Bill F.  United States
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I'll pile on agreement with the assisted-widerange concept. The best results with this type of driver seem to come between about 80Hz and 8kHz. 99% of criticisms arise from trying to exceed that envelope. Within their limits, they're extremely nice.

I've got a pair of OBs with 20" bass drivers on the bottom and RS pod tweeters on the top. I've tried all sorts of widebands between (see pic below). Currently enjoying a pair of Stephens FR80's--very similar to LE-8T's.
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