Garrard 401 Owners manual

GARRARD

MODEL 401

TRANSCRIPTION TURNTABLE

Instruction Manual

GARRARD E NGINE ERING LIMITED NEWCASTLE STREET SWI NDON WILTSHIRE

preface

As the owner of this Garrard Model 401 Transcription Turntable you
have a product supreme in its class which will maintain its high
standard of performance throughout many years of use, with the
minimum of attention. This manual will help you to operate and take
care of your Model 401 but, if you require any further advice, please
do not hesitate to contact your Garrard Agent, or our Technical
Service Department at Kembrey Street, Swindon, Wiltshire,
Telephone Number Swindon (0793) 6211. Telex 44180.

This manual is supplied with Model 401, Serial No. ...................

2

THE GARRAR D MODEL 401 TRANSCRIPTION TURNTABLE

3

contents

page 4 general information

page 5 technical specifications

page 6 operation

page 7 maintenance

page 8 adjustments

page 11 installation

page 14 servicing

page 15 spare parts, diagrams

page 17 spare parts list

general information

The Garrard Model 401 is the culmination of half a century of experi­ence in the design and manufacture of high quality record playing
equipment and has the elegant appearance characteristic of the best
British engineering products.
The superlative performance of this model is achieved by such fea­tures as a heavy, balanced turntable with a robust, super-finished
spindle and a sturdy intermediate driving wheel.
Each speed can be set precisely by means of a special eddy current
braking system and stroboscopic markings on the turntable illuminat­ed by a high-intensity neon lamp.
Every Model 401 is supplied complete with a set of fixing screws,
an adaptor for playing records with 1.5in (38 mm) centre holes,
lubricating oil, a mounting template, an individual test report and full
instructions.

4

technical specifications

Turntable:

Diecast aluminium with an anti-static rubber mat and stroboscopic
engraving on rim for 331/3, 45 and 78 rev/min at 50 c/s. A version for
60 c/s is also available. It is accurately balanced, has a diameter of
12 in (305 mm) and weighs approximately 6 lb (2.5 Kg).

Base Plate:

Die cast aluminium, ribbed for rigidity.

Motor

Shaded-pole induction type, magnetically screened by a heavy cast­iron case and suspended on 6 tensioned springs. The rotor is dynam­ically balanced within exceptionally close limits.

Voltage:

Dual range-110/125 and 220/250 volts a.c. A separate neon lamp is
required for each range.

Frequency:

50 or 60 c/s, dependent on the motor pulley and turntable fitted.
Alternative pulley and turntable available.

Power Consumption:

Approximately 12 watts.

Wow:

Less than 0.08% r.m.s.

Flutter:

Less than 0.04%r.m.s

Rumble:

Negligible

Insulation:

Tested at 1500 volts ac. for one minute between motor windings and
frame and at 500 volts d.c. with an insulation test meter when a resis­tance greater than 20 Megohms must be registered.

Motor Switch:

Double-pole, fitted with a switch click supressor across each pole.

Speed Ranges:

31.9 to 34.6, 43.2 to 46.8 and 75 to 81 rev/min. approximately.

Size:

14 5/8 in (371mm) from back to front; 13 3/4 in (349mm) wide; 2 in
(51mm) above and 3 15/16 in (100mm) below underside of base plate

Weight:

17 1/2 lb (7.9kg)

Measured with Gaumont Kalee
Type 1740 meter with 3000c/s
constant frequency record at
331/3, 45 and 78 rev/min

5

operation

Referring to Diagram 1.

(1) Place a record on the turntable.
(2) Turn the speed selector to the setting appropriate for the

record to be played, or check that this has already been done.

(3) Turn the motor switch control clockwise to start the turntable.

This operation also switches on the indicator lamp.

(4) To set speed accurately, place a record on the turntable and

switch on, as already described. Place pickup on record and
turn the speed adjuster until the stroboscopic markings on the

rim of the turntable, appropriate to the speed for which you

are setting, appear to remain stationary. The lower marking

represents 331/3 rev/mm., the centre one 45 rev/mm. and the

upper one 78 rev/mm.

For highly accurate work, it is desirable to let the motor run for
approximately 10 minutes so that it may reach its normal operating
temperature. Speed should always be re-checked after changing the
speed range.
To protect the intermediate wheel, the speed selector is interlocked
with the motor switch and cannot be operated unless the motor is
switched off.
Do not hold the turntable stationary whilst the motor is switched on
and never disconnect the power supply until the motor has been
switched off

Motor Switch Speed Adjuster Speed Selector Stroboscopic Markings

Diagram 1

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