Kuzma Stabi-REF2101014 User Manual

KUZMA STABI REF PS 2 TURNTABLE (

Instruction manual
2010-10

1

without arm ) S/N……..

KUZMA LTD

INSTRUCTION MANUAL FOR STABI Ref 2 turntable

The Stabi Reference 2 turntable is a very precisely engineered piece of equipment. However
the construction is robust and requires minimal maintenance for optimal performance. It
differes from Stabi Ref only in the use of different power supply called PS REF 2.

Height Adjustment Armboard

Base chassis Subchassis

CONTENTS: Page

General 3

Unpacking 4
Basic Setup 4-6
Setting up turntable 6-7
Use and Adjustment 8-9
Maintenance 9
Problems 10
Transportation 11

2

General description

Stabi Reference turntable is a suspended subchassis turntable. The main chassis, subchassis
and platter are of an acrylic and aluminium sandwich construction which dampens all
resonance of the turntable. The subchassis is isolated from the environment by four springs
which are damped with silicon oil in sealed reservoirs. The suspension is easily adjusted via
four knobs on the turntable top. The whole turntable stands on three large spikes.

The bearing assembly is of an inverted type. The platter lies on a ruby ball and is centred by a
sliding ring. These both have their own oil bath.

Two motors drive the platter via a flat belt. The turntable has its own external motor
controller which enables motors to rotate with minimum vibration and constant torque. On the
PS REF 2 ( MCU- motor control unit) front panel is a speed display and start, store and speed
selector. It is computer controlled, split phase with fine speed adjustment. The signal is
amplified by two 20W amplifiers.

Each turntable is individually built and tested and made of the best available materials to
ensure the highest possible standard of musical performance. The turntable is supplied with
one predrilled armboard.

Kuzma Stabi Reference turntable:

Mass 40 kg
External dimensions 500x400x200 mm
Weight of platter 8 kg
Resonance of subchassis 2 Hz (damped)
Speeds 33, 45 RPM
Fine speed adjustment yes
Mat textile & rubber
Motor 2 pcs 24 poles
Mains supply (non-selectable) 110-130 V 50-60 Hz,
200-240 V 50- 60 Hz
Max tonearm weight: 2,5 kg

PS REF 2:Motor Controller Unit Ref 2 ( MCU ):

Mass: 2 kg
Size: 120x140x400 mm
Power consumption: 50w
Output: 33, 45 rpm (40-100Hz, 110V)

Optional: various predrilled armboards (SME, Graham, Triplanar, Ikeda, Ortofon,…)

Safety Precautions:

Electrical connection to the motor controller (MCU) from the mains comes via the cable.
Please keep MCU away from moisture and be careful not to damage the mains cable. The
same precaution applies to cables feeding the turntable motors.

3

Unpackaging

Contents:

Stabi Ref is packed in a single main box.

Inner box:
platter, subplatter, PVC bottle with bearing oil, belt, armboard, motor controller, power cord
and motor cable, Allen key 4 mm with 4 pcs screws for armboard, instruction manual, clamp
with 2 washers.
At the bottom of main box:
Subchassis with bearing shaft and base chassis with motors.

Removing parts:

Prepare the surface where you will set up the turntable. Open the box at the top (see vertical
arrows). On top is an inner box containing platter, subplatter, motor controller, clamp &
accessories: - remove this.
Below are the two main chassis of the turntable. Remove top foam inserts and lift up the
subchassis and set it aside. Remove remaining foam inserts and lift up the lower main
chassis. Be careful not to damage motor pulleys. Position the base chassis on top of the shelf
or stand.

Basic Setup

Note: Some parts are heavy, so be careful when handling!
Note: Choose a suitable supporting table which can hold over 45 kg without warping.
Note: While the parts are packed in plastic bags for protection, these are not intended to be

strong enough to lift or carry the contents.
Note: The base chassis must be in a horizontal position for at least two hours before the top
subchassis is placed on top. This will give enough time for the silicone oil to settle at the
bottom of the reservoirs.
Note: The top subchassis will reach its correct position only when the weight of the platter is
added.

Note: Allow ventilation space above motor controller unit.

Base chassis:

The base lower chassis has suspension towers on the four corners and two motor pulleys in the
middle positioned diagonally. This is heavy. Lift it, being careful not to scratch against metal
parts of clothing, and position it in the middle of the supporting board. If you are planning to
use some extra supporting discs below the turntable’s own spikes, now is the easiest time to
do it. Clean surfaces with a soft brush or cloth. Now is the moment to level the stand
horizontally.

4