Technics SL-1650

1 9 7 7 1977
1 9 7 8 1978

Here is something that vanished completely : record changers.

Up to six records can be loaded on the umbrella-like spindle. The Memo-Gram selector allows to program any sequence between records: with three discs loaded, if set to "4", the last side of the tird disc will be repeated once ; with six discs loaded and the Memo-Gram set to "4", only the first 4 sides will be played.
And if set to "R", the last side of the last record will be played repeatedly - ad nauseam :)

In single-disc mode, the Memo-Gram settings alternate between repeat of a side up to six times. Or repeatedly, continuously and passionately.

Of course, auto-reverse wasn't in the program, but the SL-1650 was built like any big turntable: the rotor and platter are combined into a single piece, a B-FG speed monitor which stands a 30g load without loss of selected speed, zinc-alloy tonearm base and aluminium die-cast turntable base.

Further features are a double-insulator system, a 10% pitch control for each speed, a strobeobscope lamp and a (very basic) variant of Technics' fine EPA-100 tonearm.
Said tonearm, however, isn't supported by a motor of its own, but is fed by that of the turntable.

Technics SL-1650, image 1 Technics SL-1650, image 2 Technics SL-1650, image 3
Technics SL-1650 specifications
Title Value
Type : Direct-Drive automatic changer
Motor : Back-Electromotive-Force FG
Servo-DC
Platter : 33cm aluminium diecast
Speeds : 33 1/3 & 45rpm
Pitch control : ± 10% for each speed
Wow & flutter : 0,03% WRMS (JIS, C5521)
± 0,042% (WTD, DIN 45507)
S/N ratio : 50dB (DIN 45539A)
70dB (DIN 45593B)
Tonearm type : tubular "S"
static-balance
direct-reading
Effective length : 23cm
Overhang : 15mm
Firction : 7mg (H and V)
Effective mass : 22g (6g cart, 1,75g stylus force)
Tracking error : < 3° (edge of 30cm LP)
< 1° (center of 30cm LP)
Offset angle : 21,5°
Tracking force : 0...3g
Cartridge range : 5...11g
Shell weight : 9,5g
PC : 9W
Dimensions : 45,3 x 17,5 x 36,5cm
Weight : 9,1kg.
page online since : september 2007
page updated : not yet
page type : LGT / KNB
page weight : 172.38 Kb / 0 b
  • TVK Talk Forum
  • TVK Museum
  • Specials
  • Timelines
  • Utilities
  • Games