EMT 938 Broadcast Disk Reproducer

 EMT 938 Features

Robust Tone Arm

Simple and Rational Operation

High Immunity to Vibrations with Effective Shock Absorber System

Direct Drive with Quick Start

Three Speedes: 33, 45, 78 rpm

High-Quality Amplifiers

The mains power switch, speed selector switch, Start/Stop button, and button for the tone arm lift comprise the operating elements of the EMT 938 BDR (Broadcast Disk Reproducer). Both Start and  i.e., run-up of the turntable platter and platter braking, are accomplished in less than 500 milliseconds. The unit cantherefore be started precisely at any syllable in the groove.

To facilitate locating a desired point on the record (such as the beginning of the modulation, or a specific cueing point), theplatter rim extends 2,4 cm beyond the edge of an LP, enabling the record platter to be turned back and forth by hand. A phone jack is provided for connecting stereo headphones.

 The EMT 938 BDR is now equiped with a synchronization indicator, which illuminates as soon as the started turntable platter has reached the selected speed.

 The front view shows the level controls of the audio amplifiers. The insertion of a pre-preamplifier for moving coil pickup cartridges is indicated by a coloured dot.

Jacks for external connections are located on the rear side of the EMT 938 BDR. Printed legends identify the functions of the jacks.

Specifications

Deck

Turntable Diameter:  330 mm

Turntable Speeds:  78 rpm, 45 rpm, 33 1/3 rpm

Accuracy of turntable speed:  Quartz controlled, max. ±0,1%

Speed Variation with VCD Operation:  ±25 %

Run-up Time at Tamb = 20°C

Quick Start:  max. 200 msec

Wow and Flutter:  max. ±0,075% (at 33 1/3 rpm measured with EMT 424, weighted in accordance with DIN 45507/IEC)

Rumble (measured in accordance with DIN 45 539 with test record DIN 45 544):

Unweighted : min. 50 dB

Weighted : min. 70 dB

Amplifier Section

Equalization (DIN,NAB, IEC):  75/318/3180 µsec 

Frequency Response:  40 Hz to 15 kHz ±0,5 dB;  30 Hz approx. -3 dB below 30 Hz approx. 20 dB/octave rolloff above 25 kHz approx. 12 dB/octave rolloff

Input Voltage

For magnetic Hi-fi  cartridges:  2  to 10 mV (version with Ri =47 kohms)

For dynamic cartridge:  0,3 to 1,4 mV (with active impedance transformer, gain = 17 dB)

Overload margin of the Input:  20 dB above nominal level

Output Voltage:  +6 dB (1,55 V) max. 10 V on 200 ohms

Harmonic Distortion:  max. 0,2%,  30 Hz to 12 kHz, at =15 dB (4,4 V) 0n 200 ohms

Crosstalk Supression:  min. 50 dB ,  30 Hz to 15 kHz

S/N Ratio RMS

Unweighted Peak : min. 70 dB

Weighted  : min. 64 dB (in accordance with CCIR 468-2)

Mono Switching:  Remote controllable

Headphone Outputs Mono and Stereo (200 Ohms):  0,5 to 2 V, unbalanced

General

Switchable for mains voltage of 100 to 120 V, 200 to 240 V, 50 Hz or 60 Hz

Power Consumption:  max. Approx. 85 VA (normally approx. 40 VA)

Dimensions (W x D x H):  500 x 440 x 195 mm (19,7" x 17,3" x 7,7")

Weight:  approx. 25 kg (55,12 lbs)