Quantec QRS Vintage Digital Reverb Processor

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Short Description: Innovative Digital Room Simulating Reverb from 1982. In Used, Excellent condition Manufacturer Description : From 1982 comes a novel digital effects processor. From the manual: The QUANTEC Room-Simulator - a computer technology-based system for the generation of acoustical effects simulating variable-sized rooms. A new technical concept enables emulating the acoustical behavior common to spaces of any volume or size, so that acoustical impressions ranging from a tin can to a columned cathedral may be synthesized and created at fingertip command. Contrary to standard reverberators, the QRS enables the reproduction of the selected space's inherent resonances, which are a function of its basic enclosed volume, in that their density and distribution are precisely established. In conjunction with the legendary "first reflection" this is the effect which enables the ear to establish spatial volume and size of a percepted room. Besides this, the QRS has two additional built-in programmes: "FREEZE-Effect" and "ENHANCE-Effect." The QRS stores up to 64 reverb programs, each with 8 parameters that can be finely tuned. It has a FREEZE mode that creates a physically impossible space in which sound is trapped, pinging between surfaces. It also has an ENHANCE mode consisting of a number of reflections of equal strength, on which there is superimposed a decreasing sequence of denser, but quite perceptibly discrete reflections. It has four balanced outputs. In standard configuration the reverb and reflections are mixed on the first two outputs and the 3rd and 4th output are rear channels useful for quadrophonic applications. In the optional configuration the first two outputs carry the reflections and the third and fourth outputs carry the reverb signal. Included with this unit is a fully functional RF remote and the original owners manual. Specifications : Programmes a) Reverberation programmes Room sizes:1m3 - 106m3 with 7 steps Decay time:0.1 sec to 100 sec (up to 400 sec at 40Hz) Decay time at low frequencies:Coefficient of 0.1 to 10 with 11 steps in relation to selected decay time Decay time at high frequencies:Coefficient of 0.1 to 2.5 with 8 steps related to selected decay time Reverberation density:More than 10,000 per sec depending on room size, average of 3 per Hz of bandwidthdepending on room size Prereverb delay:1ms-200ms in steps of 1ms (optional 800ms in steps of 4ms), level -30dB to 0dB insteps of 1dB 'OFF' function 1st reflection:1ms-200ms in steps of 1ms (optional 800ms in steps of 4ms), level -30dB to 0dBinsteps of 1dB 'OFF' function b) Enhance-programme:Simulation of rooms without perceptible reverberation Number of programmes:7 c) Freeze-programme:Special loop programme with infinite decay time to add any number of accoustical entries Digital Specs a) A/D converter code:16 bit Sampling rate:20kHz Distortion:0.1% typ. b) Processor:26bit Clock frequency:20.48MHz c) Memory:approx 2 Megabit of RAM Analog Circuit Specs Inputs:2 of, balanced, isolated by digital optocouplers Input impedance13.2 kOhms balanced, 6.8 kOhms unbalanced Level:Adjustable -20 dBm to +6 dBm Headroom:12dB above nominal level RF-filter:18dB/oct beyond 100kHz Ouputs:4 of, balanced Outputs 1 and 2:reverb plus 1st reflection Outputs 3 and 4:for quadrophonic use Output impedance:100 Ohms balanced, 50 Ohms unbalanced Minimum load:1 kOhm Nominal level:adjustable -6 dBm to +6 dBm Dynamics:Better than 85dB unweighted typ. 90dB (valid for decay times) Frequency response:20Hz - 8kHz +0/-3dB Power supply:220V, 50/60Hz, 80VA (option 117V) Connectors:XLR-3 Dimensions:19" rack 2u rack mount Weight:5.5kg Remote control:Identical to front panel, display and operation simultaneously