Tandberg TR-2055

 The Audio Section Features

Adjustable sensitivity for one of the transcription unit inputs and for both the tape recorder inputs.

2 inputs for transcription units,and 2 tape recorders.

Both tape recorder inputs have a Tape Monitor facility.

Copying facilities for 2 tape recorders

Front output jack for recording a tone-controlled programme (Tape Contour Out)

Frequency/Loudness compensated volume control

2 filters, low and  High

2 front jacks for stereo headphones

Light diode indicators (LED) for the most important operational modes

Recommended speakers; Tandberg Studio Monitor 

 The FM Section Features

MOSFET transistors, 4-pole ceramic filters and integrated circuits (ICs).

Automatic switchover to FM stereo with illuminated indicator.

Electronic tuning. Heavy flywheel making tuning a pleasure.

Muting for quiet tuning.

Large tuning and signal strength meters for spot-on tuning.

FM 25 µs de-emphasis switch for use with external Dolby decoder when receiving FM Dolby broadcasts.

The AM Section Features

2 MOSFET transistors in the HF stage and the mixer provide equally good reception with strong and weak aerial signals.

2 tuned RF circuits mean that the signal/noise ratio is excellent and the image frequency rejection ratio is greater than 90 dB.

Specifications

Amplifier Section

Output Power per channel, sine wave, with 1 kHz in 8 Ω /4 Ω:   60 W /80 W.  Both channels driven simultaneously DIN 45500

Output Power per channel , sine wave, from 20 to 20,000 Hz in 8 Ω:   55 W.  Both channels driven simultaneously. 0,15% Distortion

Distortion (with output power 1 dB below nominal and lower at 1 kHz in 8 Ω (4 Ω):  0,08%

Intermodulation (according to DIN 45 500):  0,15%

Damping Factor (nominal output power in 8 Ω (4 Ω):  50 (25) 20-20,000 Hz

Frequency Response (from linear inputs (-15 dB): 76 - 80,000 Hz

Channel Separation (at 1 kHz minimum):  60 dB

Tone Controls: 

Treble  Control at 10 kHz : ±15 dB

Frequenzy/Loudness at 10 kHz : +3 dB

Bass Control at 50 Hz : ±15 Hz

Frequency/Loudness at 50 Hz : +8 dB

Low Filter -12 dB/oct, -3 dB at 70 Hz

1 High Filter  -12 dB/octave, -3 dB at 8 000 Hz

2 High Filter -6 dB/octave, -3 dB at 8 000 Hz

Input Sensitivity (nominal  output power in 8 Ω):

Tape 1 : 150 - 600 mV

Tape 2 (Extra) : 150 - 600 mV

Phono 1  Magn. (cer) : 2,2 - 10 mV

Phono 2 Magn. (cer.) : 3,0 mV

Signal-to-Noise Ratio (2x50W in 8 Ω according to DIN 45 500):

Tape 1 : 62 dB

Tape 2 (Extra) : 62 dB

Phono 1 : 60 dB

Phono 2 : 58 dB

Tuner Fm Section

Wave Band:  87,5 - 108 MHz

Frequency Response (-3dB):  20 - 15,000 Hz

Sensitivity in Mono (for 26 dB S/N accor. to DIN 45 500 with 75/300 Ω aerial impedance):  0,8 µV/1,6 µV

Sensitivity in Stereo (for 46 dB S/N accor. to DIN 45 500 with 75/300 Ω aerial impedance):  20 µV/40 µV

Signal-to-Noise Ratio (with 1 mV aerial voltage):

Unweighted (according to IHF),  Stereo/Mono : 75/78 dB

Weighted (according to DIN), Stereo/Mono : 62/66 dB

Unweighted (according to DIN) , Stereo/Mono : 65/68 dB

Distortion (according to DIN), Stereo/Mono :  0,15%/0,15%

Selectivity (according to IHF), ±400 Hz :  80 dB

Image Frequency Rejection Ratio:  70 dB

AM suppression:  70 dB

IF Rejection:  95 dB

Limiting (-3dB) with 75 Ω aerial impedance:  0,7 µV

Muting Thereshold with 75 Ω aerial impedance:  4 µV

Capture ratio:  0,9 dB

Channel Separation (accor. to DIN 45 500):  40 dB

Pilot Tone Suppression (accor. to DIN 45 500):  70 dB

38 kHz Suppression (accor. to DIN 45 500):  60 dB

General

Cabinet:  Delivered in Teak, Rosewood or Walnut

Mains Voltage:  240 V 50.60 Hz (internal tappings for 120-220-240 V)

Dimensions (W x H x D):  510 x 153 x 353 mm (20" x 6" x 14")

Depth with knobs:  377 mm (15")

Weight:  13 kg (28-3/4 lbs)