JVC QL-A75

1 9 8 1 1981
1 9 8 4 1984

Sort of attached to the three L10 units was the QL-A75 - outside Japan that is : there were bigger ones there, even if no dedicated L10 LP player was produced.
Those who bought an L10 combo would either get a QL-A95 or, more likely, any of the TT drives (TT-101, TT-81, TT-71 or TT-801).

The QL-A75 was a mid-end model (Victor-wise) centered on that early 1980s trend : Dynamic Q-damping.
Still, two arm wands were available and the Q-damping system worked well, along a special cabinet made of slabs of high-density wood.

Interesting slant : the tonearm and the platter assembly are coupled together to resonate (if they ever do) in unison. Special feet and rubber-clad springs further isolate the base and platter respectively for even less resonances.

But if an IC goes bad... I know of a mechanically mint QL-A75 that's been sitting in a repair shop for a long time : that long-since unavailable burnt out IC makes it completely unrepairable :(


A QL-A75 in full-size here.

JVC QL-A75, image 1 JVC QL-A75, image 2 JVC QL-A75, image 3
JVC QL-A75 specifications
Title Value
MOTOR MOTOR
Type : Coreless DC servo
Drive system : Direct-Drive
Speed detection : integrated frequency generator
Servo system : Double Servo Quartz
Wow & flutter : 0,018% (WRMS)
0,03% (DIN)
0,008% (WRMS, FG method)
S/N ratio : 80dB (DIN-B)
Start-up time : 0,75s (1/4 of a turn ; 33rpm)
Start-up torque : 1,8kg/cm
Inertia mass : 350kg/cm2
Speed deviation : 0,0015%
Load characteristics : 0% (under 250g loads)
Drift : 0,0001%/hour
PLATTER PLATTER
Size : 30,8cm
Material : diecast aluminium
Weight : 2,35kg (incl. mat)
TONEARM TONEARM
Type : Statically balanced
Dynamically Q-damped
Effective length : 25,4cm
Tracking error : -1,12° / +1,48°
Overhang : 15mm
Tracking force : 0...3g
Cartridge weight : 15...21g (S-shaped wand)
4...10g (straight wand)
VTA : ± 3mm
Dimensions : 49,5 x 20,9 x 41,19cm
Weight : 14kg.
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