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View Full Version : Wanted : Name and / or Number of a Studio Monitor :



David V. Webber
11-11-2010, 05:16 PM
What is the JBL Studio Monitor called which contains a 15" Woofer , the 375 Driver
with the Slant - Plate Lens , and the Ring - Radiator ? In an almost cubic , plain Birch
box .

Can see a picture of it in the pictures from the 60s and 70s .

Thank you ,

David V. Webber

boputnam
11-11-2010, 09:06 PM
4333A (http://www.lansingheritage.org/html/jbl/specs/pro-speakers/1977-4331-4333.htm)...?

Also, the L45 Flair (http://www.lansingheritage.org/html/jbl/specs/home-speakers/1974-l45.htm) - with the S8 system - would fit that description, kinda.

HCSGuy
11-11-2010, 09:42 PM
JBL's original studio monitor could be purchased as a C50SM enclosure, satin grey or unfinished, with S7 or S8 speaker loads (S8 is a LE15woofer, 375 compression driver and acoustic lens - I think the 075 tweeter was added separately)

http://www.lansingheritage.org/html/jbl/specs/pro-speakers/1967-d50sm7.htm

There was a guy recently in Chicago think that had 4 mint ones in the S8R configuration, couldn't get $8k for the four, so he parted them out, though I think the enclosures still pop up from time to time...

Rolf
11-12-2010, 06:39 AM
4333A (http://www.lansingheritage.org/html/jbl/specs/pro-speakers/1977-4331-4333.htm)...?

Also, the L45 Flair (http://www.lansingheritage.org/html/jbl/specs/home-speakers/1974-l45.htm) - with the S8 system - would fit that description, kinda.

Not the 4333. They came with the 2420 driver.

hjames
11-12-2010, 01:17 PM
My 4320 came with an LE15 and an LE85 (2420 driver, short horn and slant lens) not the potato masher, maybe just the C50SM had the 375?


JBL's original studio monitor could be purchased as a C50SM enclosure, satin grey or unfinished, with S7 or S8 speaker loads (S8 is a LE15woofer, 375 compression driver and acoustic lens - I think the 075 tweeter was added separately)

http://www.lansingheritage.org/html/jbl/specs/pro-speakers/1967-d50sm7.htm

There was a guy recently in Chicago think that had 4 mint ones in the S8R configuration, couldn't get $8k for the four, so he parted them out, though I think the enclosures still pop up from time to time...

David V. Webber
11-12-2010, 08:36 PM
JBL's original studio monitor could be purchased as a C50SM enclosure, satin grey or unfinished, with S7 or S8 speaker loads (S8 is a LE15woofer, 375 compression driver and acoustic lens - I think the 075 tweeter was added separately)

http://www.lansingheritage.org/html/jbl/specs/pro-speakers/1967-d50sm7.htm

There was a guy recently in Chicago think that had 4 mint ones in the S8R configuration, couldn't get $8k for the four, so he parted them out, though I think the enclosures still pop up from time to time...

I remember now ! My twin bought a pair . Unfinished . Do have the " Ring Radiator " .
I think he wanted the same " guts " as the PARAGON , but in a plain box .

His wife just died . He is in the hospital . His house is going to be demolished . Next week I intend to drive over to New Jersey , ( I live nearw Wilmington , Delaware , )
and " Rescue " them . One has water damage to the top veneer . Possibly the grill got
wet also . ( Roof caved - in ! Earlier , I told him to cut a hole in the side of the house a get those awsome JBLs out !! )

I'll likely offer them here , to a " Good Home ". " Best Offer " in some sort of time period.

When my twin bought the C50SMs , I built a pair of " bookshelf " speakers using the
LE14A and LE85 / Potato Masher . Built rosewood veneer cabinets . 4 1/4" ports !
Sent the LE85s to a JBL Service Center to get new diaphragms . By the time I had saved - up $ 600 , ( Orange County ; the " good " ones , ) my LE85s had been " lost " !!
The JBL Repair Center bought some from ( ? ) Ebay , but they are ugly and coroded , while mine were " mint " . Looking for a NICE pair ; could have blown diaphragms , as I have the $ 600 ones . Can't replace the caps in the original X - Over , as they are imbedded in tar . However , Mr. Greg Timbers sent me all the parts , ( including some
MONSTER air - coils , ) free , to build a pair of " modern " X - Overs .

If I can't find a home for the C50SMs , I may use the Ring - Radiators and make my speakers 3 - Way . [ Just BARELY room enough on the front board . ] However , Mr. Timbers says the Ring Radiator doesn't do well with a passive - crossover . Better with a small " Chip - Amp " . If that is what happens , I'll contact Greg and find out exact specs on the small chip - amp , and how to work into the X - Over diagram he sent me . DVW