Spectra 1964 Classic Model C610 Complimiter

Spectra 1964 Classic Model C610 Complimiter

50 years ago WIlliam G. Dilley introduced the world to his revolutionary new dynamics processor, the Model 610 Complimiter. A truly unique device, the Model 610 was not only the fastest, cleanest and quietest of it’s type, but was also capable of providing completely separate peak-limiting and compression functions. For decades the Model 610 could be found safeguarding levels to tape, strapped across the mix bus, and even before record lathes in some of the most well-known recording studios in the world.

Today we introduce the Spectra 1964 Model C610 Complimiter. True to the original, the C610 still utilized the unchanged and unmatched 601 Compressor/Limiter circuit and a 101 amplifier for make-up gain. Our improvements include XLR and Phoenix I/O, highest quality input/output transformers, selectable input padding, buffered true VU metering, and multi-stage overload indication.

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• Input Impedance: 600 Ohms
• Output Impedance: 2.5k Ohms
• Input Pad: Position 1: No Pad, Position 2: +4 dBu nominal input, Position 3: +22 dBu nominal input
• Maximum Gain: 56dB
• Threshold attack level: -40 dBm
• Maximum Output: +18dBu
• THD: Less than .01% @ 30Hz-20KHz, at +16 dBm, up to 30dB compression, dependent on release setting
• Signal/Noise: Better than 80dB below +4dBm output, with -40 dBm input, 20Hz to 20kHz
• Frequency Response: +/- 0.1dB 20Hz-40KHz
• Compression/Limiting Ratio: Continuously variable from 1.1:1 to 100:1
• Attack time: 100 nanoseconds to 1.2 milliseconds, automatically variable.
• Release Time: Continuously variable from 50 milliseconds to more than 10 seconds