Amplificator Exposure XX 1395 X

Amplificator Exposure XX 1395 X: made in England, 6 itrari, 2 iesiri, 4-16 ohmi, mufe aurite, volume, selector, negru,  poze reale.

General

• Manufacturer: Exposure Electronics,
• Model: X - "integrated regulated amplifier"
• Years of manufacture: ca. 1987 - 1995

Type: Integrated amplifier

• Remote control: No
• Power consumption: idle approx. 10-15 W, mainly by the preamp supply, max. approx. 80 W
• Dimensions: 85 x 430 x 310 mm (HxWxD)
• Weight: approx. 9.0 kg
• Colour: Black
• Original price approx.: 2000 DM

Connections

• Number of inputs: 5, Chinch
  • Phono, alternatively ex works as MM or MC, as supplementary board
  • CD
  • Tuner
  • Video
  • Tape
• Number of outputs: 2
  • Loudspeaker, 4mm socket
  • Tape-Out, Chinch

Technical Data

• Continuous power:
  • 8 Ohm: approx. 35W

4 Ohm: approx. 35-40W Supply voltage

• • power amplifier +-32V regulated with zener diode circuit of +-37V power supply voltage

Preamplifier +-18V, individually regulated with 1x LM317/337-ICs each for line and phono stage, derived from main power supply winding

• Attenuation factor: ?
• Input (sensitivity/impedance)
  • Phono (MM): 47 kOhm, 470 pF, 3.0 mV
  • Phono (MC): 470 Ohm, 6800 pF, 0.15 mV
  • High level sources: 10 kOhm, 150 mV
• Tape output (level/impedance): 600 Ohm, 5V max. (passive)
• Frequency response: 0.5 Hz - approx. 35,000 Hz
• Tone control: not available
• Balance control: not available
• Loudness: not available
• Subsonic: yes, fixed in phono stage (15 Hz, 6 dB/octave)
• Mute: not available
• Direct/Line-Straight: not necessary
• Ripple distance (short-circuited): ? (rather moderate)
• Stereo channel separation: ?
• Signal to noise ratio: ? (rather moderate)

Special Equipment

• Holden and Fisher 160VA transformer 2x37V sec.
• Epoxy printed circuit board, double sided traces, hand soldered
• volume control ALPS RK27112 (blue)
• regulated output stage voltage via Exposure assembled power transistors, 1x for both channels
• Exposure assembled 10000µF main power supply capacitors
• use of higher quality Philips (BC) capacitors for all eletrolyt capacitors
• gold plated chinch sockets in the phono input
• floating ground in the preamplifier section
• very low quiescent current of the power amplifiers, very wide Class-B range, low idle power, nevertheless low distortion
• very high quality aluminium enclosure made of extruded profiles with very low construction tolerances
• Tape Monitor