Time Audio

TW Acustic Specifications

TW Acustic 10.5 Tonearm
Technical Specification:

Effective length: 267 mm (10.5 inch)
Mounting distance: 251.2 mm
Overhang: 15.8 mm
Offset angle: 20.5 degrees
Geometry:
Löfgren B drawn on IEC radii
Null points:
70 mm (inner) and 117 mm (outer)
Effective mass:14 gr
Bearing:
Dual pivoted type - using high precision bearings
Material:
Special black anodised aluminium
Counterweight material:
stainless steel
VTA adjustment:
via VTA adjuster (+/- 5 mm)
Azimuth adjustment:
Via rotation of headshell
Overhang adjustment:
Via positioning of cartridge in headshell slots
Antiskating:
Magnetic Antiskate adjuster
TW Acustic Raven GT
Technical Specification:

Weight:
 Chassis 22 kg
 Platter: 6 kg
 Motor control unit: 1 kg
Dimensions:
 Total footprint: 440 mm x 370 mm (W x D)
Chassis construction:
 Material: 60 mm aluminium, ceramic bead blasted and silk matt black anodised.
Feet:
 Three, stainless steel, height adjustable
Platter construction:
 Material: 60 mm TW ACUSTIC’s proprietary Delrin-based compound
Bearing:
 Bronze bearing, 16 mm hard metal shaft with ball on top, running on a thrust washer of ‘Material S ® (green)’. This is a special low-pressure PE based material with a very low coefficient of friction and very high wear resistance, giving a long maintenance free life without the need for additional lubrication. Bushing is machined exactly to fit the bearing with zero float, yet remains replaceable.
Motor:
 Integrated.
Motor control unit:
 controlled by a microcontroller.
Armboard:
 Up to two tonearms may be fitted.

 
TW Acustic Raven AC
Technical Specification:

Weight:
Chassis 30 kg
Platter: 10 kg
Motor unit: 3 kg
Motor control unit: 2 kg
Dimensions:
450 mm x 400 mm (W x D)
Motor diameter: 119 mm
Total footprint: 600 mm x 400 mm (W x D)
Chassis construction:
Material: 60 mm TW ACUSTIC's proprietary Delrin-based compound, stainless disk rigidly screwed to chassis.
Feet:
Three, delrin and ball, height adjustable
Platter construction:
Material: 10 mm copper in combination with 60 mm of our special compound let into and screwed together.
Bearing:
Bronze bearing, 16 mm hard metal shaft with ball on top, running on a thrust washer of 'Material S ® (green)'. This is a special low-pressure PE based material with a very low coefficient of friction and very high wear resistance, giving a long maintenance free life without the need for additional lubrication. Bushing is machined exactly to fit the bearing with zero float, yet remains replaceable.
Motor:
Case made from stainless steel and delrin.
Motor control unit:
controlled by a microcontroller, ready for 3 motor drive

Armboard:
Up to four tonearms may be fitted.


 
TW Acustic Raven Black Night
Technical Specification:
Weight:
Chassis 30 kg
Platter: 20 kg
Motor unit: 10 kg
Motor control unit: 5 kg
Dimensions:
470 mm x 420 mm (W x D)
Motor 270 mm x 270 mm
Total footprint: 790 mm x 420 mm (W x D)
Chassis construction:
Material: 60 mm aluminium, ceramic bead blasted and silk matt black anodised.
Inlet: 25 mm of TW ACUSTIC’s proprietary Delrin-based compound, rigidly screwed to chassis.
Feet and all other attachments are also ceramic bead blasted and silk matt black anodised aluminium.
Feet:
Four, ceramic bead blasted and silk matt black anodised aluminium, designed and built by TW ACUSTIC featuring ball and spring suspension.
Platter construction:
Material: 40 mm copper in combination with 20 mm of our special compound let into and screwed together with the copper platter.
Bearing:
Bronze bearing, 16 mm hard metal shaft with ball on top, running on a thrust washer of 'Material S ® (green)'. Bushing is machined exactly to fit the bearing with zero float, yet remains replaceable.
Motor:
60 mm aluminium, ceramic bead blasted and silk matt black anodised, in identical shape to the Raven Black Night but 60% smaller. 4 height-adjustable feet on the outer corners. 3 motors arranged in an arrow formation, pointing towards the platter. Drive belt is guided through the drive pulleys and around the circumference of the platter.
Motor control unit:
Two built-in power supplies - one is exclusively used to charge the batteries. In normal operation the motors run from the battery supply alone, controlled by a microcontroller. Switching between battery and mains supplies occurs automatically without interrupting operation, as does battery charging. A remaining charge indicator is included on the front panel. Battery complement: 20 x rechargeable AA cells. Run time on battery operation only: Approx. 20 hours.
Armboard:
Up to four tonearms may be fitted.



 
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