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In Reply to: Super Cartridges posted by IBSmiester on July 14, 2003 at 18:28:09:
" ...there is no question that this is one of finest cartridges now available! "
— Audio Scene Canada Winter 1978
ADC ZLM Improved specs
Nude Alliptic diamond tip
Dimensions 0.0002" scanning radius X 0.0015 bearing radius
Tracking force 1 gram plus or minus 0.25 g
Frequency response** 10 Hz to 20 kHz + or - 1dB; 20 Hz to 26 kHz + or - 1.5dB
Output* 1.0 mV/cm/sec
Output balance* 1dB max difference
Channel separation* 30 dB at 1kHz; 20 dB at 10kHz
Inductance 580 mH
Resistance 820 ohms
Load resistance 47,000 ohms
Load capacitance 275 pF
Cartridge weight 5.75 grams
*As measured on ADC-3 Test Record (RCA).
**As measured on JVC TRS-1005 Test Record.
All measurements are made with an ADC LMF-1 tone arm tracking at 1 gram.
Bruel & Kjoer calibration date: 1979 August 31
Serial no. 7N9126
Note: ADC ZLM Improved designed a new micro-machined armature in the omni-pivot results in superb separation at all frequencies and unrestrained tracking. This low mass stylus cantilever assembly is unrestricted to transfer an exact reproduction of the vinyl in the record groove to the high efficiency electrical circuit in the cartridge body.
ADC ZLM Improved employed a tapered, hollow cantilever fitted with the special Aliptic stylus (semi-Shibata) providing the finest stereo reproduction available. The superb polish of the Aliptic are an ideal combination for today's high level, wide-frequency range stereo records. The one-gram recommended stylus force provides optimum reproduction along with preservation of your record collection in a 'mint' condition. All specifications of the ADC ZLM has been tested at the factory at 1 gram.
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