Stereo Cassette Deck (1978-79)
Rotel's 2000 series uses the newly developed and superior SC (Sendust Core) Head for its record/playback cassette deck head.
The Sendust alloy adds silicon and aluminium to pure iron to give the best magnetic characteristics possible in the ideal record/playback head. It solves the problems of weakness and head wear in permalloy and the poor magnetic characteristics of ferrite, which is durable but liable to cracking. Excellent magnetic permeability and a high S/N ratio arc thereby guaranteed.
Moreover, since it provides as accurate a gap as the ferrite head, even very high frequency characteristics are improved. In addition, with a greater maximum flux density then permalloy, linearity is improved and less head wear results in superior performance. A magnetic coercity of 1/2 that of ferrite but magnetic properties equivalent to permalloy ensures less need for demagnetization and overall ease of maintenance.
The RD-2200 uses the ultra modern LED Bar Chart Peak Indicator for record and playback. This consists of 43 independent LEDs each for both right and left channels that register from -20 dB to +3dB. Compared to the analogue system of other peak level meters with limited speed of response, the digital system is superior in speed and presentation since it converts information into peak and average levels.
By eliminating all mechanical meters and employing electronic circuitry an instant and accurate register of information is ensured. Parallel displays of both right and left channels provide easy visibility and quality recording.
Type: 2-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.76 cm/s
Heads: 1 x record/playback, 1 x erase
Tape Type: type I, FeCr, Cr02
Noise Reduction: B
Frequency Response: 30Hz to 19kHz (Cr02 tape)
Signal to Noise Ratio: 64dB (dolby B)
Wow and Flutter: 0.05%
Input: 140mV (line), 0.4mV (mic)
Output: 0.98V (line)
Dimensions: 482 x 150 x 260mm
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