my full range LE8T

[zzzz_kendall]

http://i146.photobucket.com/albums/r275/zzzzjbl_1/enclosures/L44_33_1.jpg


This is my first post on JBL

full range LE8-1

step

http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_1.jpg
2
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_2.jpg
3

4
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_4.jpg
5
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_6.jpg
6
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_5.jpg
7
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_7.jpg
8
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_8.jpg
9
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_9.jpg
10
http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/2cbf_10.jpg
11

[Robh3606]

Welcome to the site. So how do you like them?? What version are they?? They look like the -2's, is that a paper ductcap or a painted aluminum??

Rob:)

[zzzz_kendall]

Welcome to the site. So how do you like them?? What version are they?? They look like the -2's, is that a paper ductcap or a painted aluminum??

Rob:)

this enclosures is new design,

call the "vertical layer format"

two cubic feet volume enclosure

driver is LE8-1 16 ohm and dome is aluminum

http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/1_le81_16ohm_3.jpg

[Tom Brennan]

I wonder why so many single driver guys putz around with screechy Fostexes instead of using LE-8s or 755s. Cost? Ignorance? Herd mentality?

The best sounding Fostex IMO was the FX-200 which looked VERY LE-8ish. No longer made, go figure.

[zzzz_kendall]

I wonder why so many single driver guys putz around with screechy Fostexes instead of using LE-8s or 755s. Cost? Ignorance? Herd mentality?

The best sounding Fostex IMO was the FX-200 which looked VERY LE-8ish. No longer made, go figure.


this is the costing problems

because single driver no need crossover device!


3way 4 way and 6 way are good but money ($$$$$$)

[Joe Alesi]

I wonder why so many single driver guys putz around with screechy Fostexes instead of using LE-8s or 755s. Cost? Ignorance? Herd mentality?

The best sounding Fostex IMO was the FX-200 which looked VERY LE-8ish. No longer made, go figure.

Hello Tom,

I'm not a SIngle driver guy- but I know plenty of them from the Lowther Club in Melbourne. In Australia, the LE8 seems to be difficult to find. Also some of the other full range drivers have higher sensitivities which is preferred by the SET/Low power crowd. To me the LE8 would be better although not as high in efficency, but better LF extension and that JBL punch. As an aside- I gave one of my single driver (Lowther addicted) friends a listen to an unbaffled LE5-2 with 200Hz high pass- he liked it. Maybe an extended 2 way experiment one day.

For anyone who knows- I would be interested to know if the Dual COne (whizzer) equipped LE8 are genuine JBL. I have never seen any of these in JBL spec sheets, but I have seen some on eBay.

Best
JA

[Joe Alesi]

Hello zzzz Kendall,

Congrats on your project- it shows a nice addiction to construction quality. Can you tell us the cabinet wall thickness?

Best
JA

[zzzz_kendall]

Hello zzzz Kendall,

Congrats on your project- it shows a nice addiction to construction quality. Can you tell us the cabinet wall thickness?

Best
JA


the thickness is 1 .75 inch (45mm)
each enclosure weight 66 Lbs (33Kg) ex driver

[Joe Alesi]

Hello Tom,


For anyone who knows- I would be interested to know if the Dual COne (whizzer) equipped LE8 are genuine JBL. I have never seen any of these in JBL spec sheets, but I have seen some on eBay.

Best
JA

OK Guys and Gals here is an example- Genuine Cone????

[boputnam]

OK Guys and Gals here is an example- Genuine Cone????Absolutely. Surround, too...

That is the original of the Linear Efficiency (http://www.lansingheritage.org/images/jbl/catalogs/1962/page08-09.jpg) (LE) series....

[zzzz_kendall]

Absolutely. Surround, too...

That is the original of the Linear Efficiency (http://www.lansingheritage.org/images/jbl/catalogs/1962/page08-09.jpg) (LE) series....

yes !

This is very good driver

but just how to make the good enclosure and
the low frequency down to 39Hz at (1 watt at 1 meter 92dB SPL)
and (10 watt at 1 meter 102dB SPL) linear scale

my new front panel is 1 3/4 inch rosewood
the bass is better then ply wood

because Le8 the Qes is 0.44 need good material

http://i146.photobucket.com/albums/r275/zzzzjbl_1/2cbfenclosure/rosewood_1.jpg

[Joe Alesi]

Absolutely. Surround, too...

That is the original of the Linear Efficiency (http://www.lansingheritage.org/images/jbl/catalogs/1962/page08-09.jpg) (LE) series....

Thanks for the info boputman. Hmmm- more things to buy.

Also zzzzKendall- I love the thick baffle solid timber baffle. Will you use concealed fixing from the back of the enclosure?

Best
JA

[zzzz_kendall]

Thanks for the info boputman. Hmmm- more things to buy.

Also zzzzKendall- I love the thick baffle solid timber baffle. Will you use concealed fixing from the back of the enclosure?

Best
JA


Dear JA

I try many solid timber baffle,

for the bass response is rosewood
if top one is ebony

Last year I made a one pair 2 cubic feet enclosure for LE8T, the baffle is ebony the bass is bast then rosewood,


JA try the rosewood for your enclsure, nice look and sound!

[zzzz_kendall]

Thanks for the info boputman. Hmmm- more things to buy.

Also zzzzKendall- I love the thick baffle solid timber baffle. Will you use concealed fixing from the back of the enclosure?

Best
JA


Yes the rosewood baffle will fixing to the new enclosure

this one is my No. 11 LE8T enclosure

this year will made 18 pairs

all is for the full range enclosure member

[zzzz_kendall]

Yes the rosewood baffle will fixing to the new enclosure

this one is my No. 11 LE8T enclosure

this year will made 18 pairs

all is for the full range enclosure member


today is done yet!
rosewood baffle LE8T enclosure


http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/_640_rosewood_8t_4.jpg

http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/_640_rosewood_8t_5.jpg

http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/_640_rosewood_8t_7.jpg

[boputnam]

...this year will made 18 pairs...Really? 18...? :blink:

Where do you get the drivers?


today is done yet!Cool.


I have a question on this picture:


http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/_640_rosewood_8t_5.jpg

1) Who did the recone on the LE8T? It is not the most tidy of workmanship...

2) What are you using the Shure SM-58 for (or even worse, a PG58 (http://www.shure.com/ProAudio/Products/WiredMicrophones/us_pro_PG58-XLR_content)...?) - as a reference/measurement mic? I hope not... :no:

[zzzz_kendall]

Really? 18...? :blink:

Where do you get the drivers?

Cool.


I have a question on this picture:


http://i146.photobucket.com/albums/r275/zzzzjbl_1/LE8T/_640_rosewood_8t_5.jpg

1) Who did the recone on the LE8T? It is not the most tidy of workmanship...

2) What are you using the Shure SM-58 for (or even worse, a PG58 (http://www.shure.com/ProAudio/Products/WiredMicrophones/us_pro_PG58-XLR_content)...?) - as a reference/measurement mic? I hope not... :no:


All the speaker recone or re aligment by me!
because I work for speaker factory before!

major work
http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8T_1.jpg
before
http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8T_f.jpg

http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8T_h.jpg


after
http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8T_6.jpg


before (increase the flux coupling)

http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8T_a.jpgthis



this is my new design 12 inch white cone speaker (4 inch coice coil)

http://i146.photobucket.com/albums/r275/zzzzjbl_1/white_cone_12/white_cone_1.jpg

the shure sm-58 is for voice testing,
not the reference measurement

Please help me which mic is for multi tone testing
(not the condenser mic)
must be dynamic


all the LE8 or LE8t are belong to the fullrange club member,
I only have one an only one!

just makeing the enclosures


next one the enclosure is ebony solid timber baffle

(this is my LE8T-1 only)



http://i146.photobucket.com/albums/r275/zzzzjbl_1/repair_step/le8t_ebony.jpg