Manley Vari MU + T-BAR Mod

All Valve compressor and limiter designed for stereo buss applications featuring the T-BAR Modification producing a sound closer to the original units.

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The Manley Vari MU with T-BAR Mod is an all valve compressor and limiter designed for stereo buss compression. The T-BAR Mod allows for the unit to sound like the original units which used the long gone 6386 valves.
The Manley Vari-Mu takes its name from the patented technology used in this compressor, in which the valve is the gain reduction element. The compression works by using the “remote cut-off” or re-biasing of the vacuum tube. 
In compression mode, the Vari MU starts with a soft-knee 1.5:1 ratio, while in Limit mode the ratio starts at 4:1 and increases all the way up to 20:1 when pushed over 12dB of gain reduction. As more limiting occurs, the knee softens. This explains why it possible to push the Manley Vari Mu further than any other compressors.
Although it was originally designed as a mixbuss compressor to sweeten the final mix, it is nonetheless possible to use it as a dual mono with both sides having their own sets of controls including threshold, attack, recovery and output.
The T-BAR Mod uses a converter board to allow for the use of 6BA6 or 12AB6 single pentode valves wired in triode mode to replace the 5670 valves. This Mod offers sound that closely matches the original units.
Manley Vari MU with T-BAR Features:

MANLEY input & output transformers with nickel laminations in mu-metal cases with flat frequency response from 20Hz-25KHz
BALANCED INPUTS & OUTPUTS (600 Ohms)
Fully differential ALL-TUBE circuitry using one each 5670, 5751 (or 12AX7), 7044 (or 5687), & 12AL5 per channel
Independently regulated B+ and Heater supplies
Hard-wire BYPASS switch
Stepped switch INPUT attenuator as of 10/2011. (older units use Silent dual-ganged potentiometer)
RECOVERY 5 steps: 0.2s, 0.4s, 0.6s, 4sec., 8sec.
Variable ATTACK: 25msec-70msec
Continuously variable THRESHOLD
LIMIT (4:1 to 20:1) or COMPRESS (1.5 to 1)
HP SC: High Pass Side Chain Filter -3dB @ 100Hz
Large ILLUMINATED Sifam METERS (older units before serial number MSLC61642 shipped before 12/2003 use: 26V 1.2W FESTOON LAMPS; Manley’s Part Number: VAR016B) Order spare bulbs using our parts order form. (newest units after serial number MSLC61642 shipped after 12/2003 use white LED lighting)
STEREO LINK SWITCH
Several units can be linked for Surround (custom order )
Maximum gain: 35dB
Max. output: +30dBu (26Vrms) 26dB Headroom
<0.1% THD @ 1KHz Noise floor: -85dB typical Power Consumption (120/240VAC): 80 watts Unit is factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage. Operating Mains Voltage changeable with power transformer changeover switch and fuse value change. Mains Fuse Value for 100~120VAC operation: replace with 1.25A as of 10/2011 Mains Fuse Value for 220~240VAC operation: replace with 0.6A (600mA) as of 10/2011 Mains Fuse Type: MDA or MDL SLO-BLO Time delay 1 1/4" x 1/4" Mains Voltage Frequency: 50~60Hz Dimensions: 19” x 3 1/2” x 10” (chassis occupies 2u) Power transformer protrudes 3.5" out the back of the chassis. Shipping Weight: 23 lbs.

Brand

Manley

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