Technics SL-7
¥ 70,000 (around 1981)
Commentary
LP jacket size full auto player with width and depth of 31.5 cm.
The tone arm uses a dynamic balance type linear tracking arm to achieve high-precision tracing performance regardless of the installation angle.
In addition, trace performance has been further enhanced by the use of a deflection angle detection function using an optical sensor near the needle tip, microcomputer control, gimbal suspension support structure, slide bearing structure, etc.
It is a full auto player that starts playback just by setting a record and pressing the start button.
The cartridge is equipped with EPC-P202C, a plug-in connector type MM cartridge.
By adopting a pure boron cantilever and an all-laminate core magnetic circuit with extremely low attenuation, wide-band frequency characteristics are realized.
Excellent rotational characteristics are obtained by the use of a unique integrated structure D. D. and all-around detection FG for the drive part.
The upper part of the cabinet is made of precision aluminum die-cast, and the lower part is made of zinc die-cast and TNRC bottom base with anti-vibration measures.
Separately sold player stand can be used.
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Model Rating
| Type | DD full auto-player system |
| <Turntable portion> | |
| Drive system | Direct drive |
| Drive motor | Brushless DC motor |
| Control system | Quartz phase locked control |
| Turntable | Aluminum die-cast, diameter 30 cm |
| Number of revolutions | 33 1/3, 45 rpm, Auto Select (Manual Allowed) |
| Rotational speed deviation | Within ± 0.002% |
| Wow and flutter | 0.025%WRMS(JIS C5521) |
| Signal-to-noise ratio | 78dB(IEC98A weighted) |
| Tone Arm Section | |
| Format | Dynamic balance type linear tracking arm Gimbal suspension bearing structure |
| Tracking error angle | Within ± 0.1 ° |
| Arm effective mass | 9g (including cartridge) |
| Arm resonance frequency | 12Hz |
| Arm drive motor | DC coreless motor |
| Cartridge Section | |
| Format | Plug-in Connector MM Type Stereo Cartridge (EPC-P202C) |
| Magnetic circuit | All-laminated core |
| Frequency characteristic | 10 Hz to 30 kHz 20 Hz to 10 kHz ± 1 dB |
| Compliance | 12x10-6cm/dyne(100Hz) |
| Oscillator effective mass | 0.29mg |
| Needle tip | 0. 3x0. 7 mil Oval Diamond Needle |
| Dead weight | 6g |
| Exchange needle | EPS-202ED(¥10,000) |
| <General> | |
| Feature | Auto-start arm forward control key Autostop arm retract control key Queuing key Repeat key Rotational frequency selection (33 1/3, Auto, 45) button Dial scale for confirming arm travel position Upper cabinet unlock lever Stabilizer with strobe light |
| Pwer | 100 VAC, 50Hz/60Hz, 12 VDC |
| Power consumption | 16W |
| External dimensions | Width 315x Height 88x Depth 315 mm |
| Weight | 6.6kg |
| Sold Separately | Player Stand SH-B10 (2-piece set, ¥ 5,000) |