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Manley Labs Stereo Variable Mu Limiter Compressor with MS Mod & T-Bar Mod Option
$5,999.00
= $5,999.00 + N.A.
Availability: Pre Order Product status: New
Offer updated on 6/25/2022
The Stereo Variable MU Limiter Compressor with M/S and T-Bar Mod from Manley Labs is a dynamic signal processor using two single-pentode tubes wired in triode for peak reduction and compression. The tube circuit is constantly re-biased by the vacuum tube rectified side-chain control voltages, resulting in a smooth change in gain.• Mid/Side Mod Adds Stereo Enhancement• T-Bar Mod offers the sound of the original Variable MU• Manley input & output transformers with nickel laminations in mu-metal cases with flat frequency response from 20Hz-25KHz • 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) • 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 their 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 ) • 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.The Manley Variable MU Limiter Compressor has been their best selling product for many years. It is one of the very few compressors that has become a real standard in Mastering studios and contributed to most hit records over the last decade and probably the next. "Mu" is tube-speak for gain and Variable Mu is Manley's registered trademark for this limiter compressor. It works by using the "remote cut-off" or re-biasing of a vacuum tube to achieve compression. The precious vintage Fairchild 670 also uses this technique and is one of few all-tube compressor to do so, that we know of. Even the side-chain has glowing rectifier bottles. How's it work? The unique 5670 dual triode is at the center of the peak-reducing and compression action constantly being re-biased by the vacuum tube rectified side-chain control voltages which cause this tube to smoothly change its gain. Just like that.The COMPRESS mode is soft-knee 1.5 to 1 ratio while the sharper knee LIMIT mode starts at 4 to 1 and moves to a more dramatic ratio of 20 to 1 when limiting over 12dB. Interestingly, the knee actually softens as more limiting is used. Distortion can be creatively used by turning up the Input and turning down the Output while using very little or no compression. See the gain reduction curves here!You might notice that the Variable Mu Limiter Compressor has a ganged input control, but do not jump to conclusions that it is mono-unfriendly. Track away! There are separate threshold and...
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