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Dynamic Range Enhancer 117

Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250397) Misc
 
Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250398) Misc
Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250444) Misc Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250443) Misc
Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250445) Misc
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Dynamic Range Enhancer 117; dbx Inc.; Waltham MA (ID = 2250444) Misc
dbx Inc.; Waltham MA: Dynamic Range Enhancer 117 [Misc] ID = 2250444 1400x1044
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For model Dynamic Range Enhancer 117, dbx Inc.; Waltham (MA)
 
Country:  United States of America (USA)
Manufacturer / Brand:  dbx Inc.; Waltham (MA)
Year: 1980 ? Category: Miscellaneous (Other, Various) - see notes
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details
Power type and voltage Alternating Current supply (AC) / 115/240 Volt
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: Dynamic Range Enhancer 117 - dbx Inc.; Waltham MA
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 3 x 5 x 9 inch / 76 x 127 x 229 mm
Notes

Compression & expansion: continuous from 1.4 compression slope (14 dB output change/20 dB input change) to 2.0 expansion slope (20 dB output change/10 dB input change)
Dynamic range: 120dB input or output
Input noise: -110 dBm typical, -100 dBm maximum
Input level: maximum input signal in excess of 30 Volts RMS
Input impedance: 50K ohms
Output level: maximum output 10 Volts RMS open circuit; +17 dBm into 600 ohms
Output impedance: 500 ohms
Distortion: 0.5% maximum @20 Hz, 0.2% typical above 50 Hz for complete cycle of compression and expansion; 1.2% @20 Hz for 2:1 expansion; .05% typical @ 1 KHz and above for any setting of controls (3 Volts RMS or less input or output.)
Frequency response: +0, -1dB 20 Hz to 20 KHz
Attack time: 50 dB/m Sec maximum initial attack rate @1.4 expansion. 12 mSec to 65% of final value @ any setting of compression or expansion. Adjusted to be within integrating time of human ear within the constraints of reasonable low frequency distortion.
Release (decay) time: constant rate 140 dB/sec (norm) or 50 dB/sec (slow) @ 1.4 expansion
Level match control: unity gain point may be varied from 100 mV to 1 Volt

Power consumption:
USA model 115 VAC 50-60 Hz 2 Watts
EU model 240 VAC 50-60 Hz 2 Watts

Power supply switched by shortening inputs on transformer.

Net weight (2.2 lb = 1 kg) 4.5 lb (4 lb 8 oz) / 2.043 kg

Model page created by Bartosz Szwed. See "Data change" for further contributors.



All listed radios etc. from dbx Inc.; Waltham (MA)
Here you find 23 models, 19 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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