70s Urei BL40 modulimiter, essentially an LA3A opto comp section + 1176 fet limiting section in one unit feeding into each other in series, with controls to vary the blend of each. Has knobs and XLRs unlike most others. Original T4C cell. Fully working order, sounds great. Best BL40 anywhere and best price.

The BL-40 is a complex and very interesting limiter that was manufactured by UREI in the late 1970's. Essentially it's an LA-3A Optical limiter combined with a 1176LN FET type limiter. Your audio input hits the LA-3A section first, then passes through the FET limiter section.

70s Urei, basically LA-3A opto + 1176 fet comps in one unit, uses all the same custom urei transformers for the inputs and outputs as used in la3a's and 1176 rev F. Original T4C opto cell. Has the popular added knobs mod. Great sounding unit all working. Check out the demo video.

Original vintage UREI BL40 modulimiter in excellent working condition, freshly serviced, and sounding amazing.For the uninitiated, the BL-40 is basically an LA-3 and and 1176 in one box, with a little something extra. -does all the tricks, squish squash opto/ fet compressor limiter, famously championed by Chris Lord-Alge.Awesome box.Real deal ...

The BL-40 is a complex and very interesting limiter that was manufactured by UREI in the late 1970's. Essentially it's an LA-3A Optical limiter combined with a 1176LN FET type limiter.

The BL 40 Modulimiter was originally designed for broadcast use in AM radio stations, and acts like a combination of the solid state opto-cell LA-3A and the classic FET 1176 units. A T4 opto-cell acts as the RMS detector, and provides the first stage of gain reduction. This is followed by the FET limiter which acts as the peak detector.

The UREI BL-40 is a rare compressor and limiter originally designed for broadcast use in AM radio stations. It has a unique sound using a combination of an LA-3A opto compressor and an 1176 Fet limiter. A T4 opto-cell acts as the RMS detector, and provides the first stage of gain reduction which, optionally, can feed into the 1176 circuit.

The BL-40 Modulimiter is specificall y designed for AM Broad casting, but will also find wide application in TV and CCTV audio signal processing, background music systems, and commercial sound systems. For the AM broadcaster the BL-40 eliminates unwanted over …

from Radiomuseum.org Model: Universal Audio Modulimiter BL-40 - UREI Inc.; Northridge CA Shape Chassis only or for «building in» Notes Universal Audio BL-40 Modulimiter; Three instruments, audio peak limiter for broadcast use, made by Urei, United Recording Electronics Industries, plug-in modul by Pacific Recorders and Engineering Corp., San ...

Urei BL-40 Modulimiter Limiter Compressor 70s? View similar gear from other sellers on Reverb. Watch this gear and we'll notify you if it becomes available again. UREI BL-40 in good condition. Just serviced. Listed as “good condition” since the “on” light does not work, but everything else is as it should be. Sounds beautiful. Great piece.