Sansui P-M7 (Unknown)
A fully automatic quartz direct-drive turntable with linear tracking tone arm and random program selection
Overview
The Sansui P-M7 is a high-end record player from Sansui Electric Co., Ltd., designed for precision and convenience. It uses an electronically controlled direct drive system with a quartz PLL servo coreless motor, ensuring stable rotation at 33 1/3 and 45 rpm. The turntable features a 30.6 cm aluminum die-cast platter and achieves wow and flutter of 0.028% or less (WRMS), reflecting its high mechanical accuracy. It includes a dual magnet type cartridge (SV-S303) with a 0.6 mil diamond needle (SN-S303) and delivers an output voltage of 2.4 mV at 1 kHz, 35.4 mm/s.
This turntable stands out with its full-auto functionality, including auto lead-in, auto return, repeat play, auto size select for 30, 25, and 17 cm records, auto speed select, and a unique random program automatic selection feature. The random selection is enabled by two computer sensors mounted on the tone arm tip, allowing for automated music playback without manual intervention. When paired with a SANSUI cassette deck, it supports Computer Edit for direct recording and editing of vinyl records.
Specifications
| Product type | Record player / turntable |
| Drive system | Electronically controlled direct drive |
| Motor | Quartz PLL servo coreless motor |
| Number of revolutions | 33 1/3, 45 rpm |
| Turntable | 30.6 cm Aluminum Die Cast |
| Wow flutter | 0.028% or less (WRMS) |
| Signal-to-noise ratio | 72 dB or more (DIN-B) |
| Tone arm | Linear tracking system static balance type |
| Tone arm effective length | 142mm |
| Tracking error | +/- 0.2° |
| Cartridge | Dual Magnet Type (SV-S303) |
| Needle tip | 0.6 mil Diamond Needle (SN-S303) |
| Frequency characteristic | 10 Hz to 22 kHz |
| Channel separation | 25dB(1kHz) |
| Output voltage | 2.4 mv (1 khz, 35.4mm/s) |
| Load impedance | 47k Ω |
| Proper needle pressure | 1.75 ± 0.25g |
| Full auto mechanism | Auto lead in, Auto return, Repeat, Auto Size Select (30, 25, 17 cm), Random program automatic selection, Auto Speed Select |
| Rated power consumption | 11W |
| External dimensions | Width 345x Height 99x Depth 360 mm |
| Weight | 5.8kg |
| Original price | ¥ 57,000 |
Design
The Sansui P-M7 is a full-auto quartz direct-drive turntable with advanced automation features. It uses a linear tracking tone arm for reduced distortion and wear. The random program automatic music selection mechanism is achieved using two computer sensors attached to the tone arm tip. It also includes an auto-select function that automatically detects record size and sets the correct rotation speed. The system supports Computer Edit, enabling record editing and recording when used with a SANSUI cassette deck.
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