Stereo Power Amplifier DH-220
Hafler Co., David; Pennsauken (NJ)
- Country
- United States of America (USA)
- Manufacturer / Brand
- Hafler Co., David; Pennsauken (NJ)
- Year
- 1984 ?
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 307356
- Number of Transistors
- Semiconductors present.
- Semiconductors
- Main principle
- Audio-Amplification
- Wave bands
- - without
- Details
- Hi-Fi equipment
- Power type and voltage
- Alternating Current supply (AC) / 60Hz, 120 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Power out
- 230 W (undistorted)
- Material
- Metal case
- from Radiomuseum.org
- Model: Stereo Power Amplifier DH-220 - Hafler Co., David; Pennsauken
- Shape
- Book-shelf unit.
- Dimensions (WHD)
- 16 x 5.125 x 10.5 inch / 406 x 130 x 267 mm
- Notes
-
A Stereo Power Amplifier available ready built or as a kit. Intended for 120 V AC 60Hz in the USA, for use in other countries a multi-voltage power transformer is available at extra cost for 100, 110, 120, 200, 220 and 240 volts 50 or 60 cycle AC mains.
The Hafler DH-222 Bridging Kit is available to enable conversion of the DH-220 into a high power monophonic amplifier, bridging the two conventional channels into a single floating output which can deliver in excess of 400 watts into an 8 ohm load. Its rated power output is 350 watts across the audio band.
Semiconductor Complement :
26 transistors. 8 power Mosfets, 29 diodes, 4 zener diodes. 1 diode bridge.Power Rating:
Less than 0.02% total harmonic distortion at any power level up to 115 watts continuous average power per channel into 8 ohms at any frequency between 20 Hz and 20 kHz with both channels driven.IM Distortion (SMPTE):
Less than 0.005%, from 1 watt to 115 watts into 8 ohms.Typical THD at 115 watts into 8 ohms:
1 kHz - 0.0025%
10 kHz - 0.007%
20 kHz - 0.012%Frequency Response into 8 ohms:
2 Hz to 160 kHz at 1 watt
6 Hz to 60 kHz at 115 wattsTypical Channel Separation:
20 Hz: > 75 dB
1 kHz: > 85 dB
20 kHz: > 65 dBSignal to Noise Ratio, unweighted:
Better than 100 dB at 115 watts into 8 ohmsInput Impedance:
47,000 ohms.Input Sensitivity:
1.55 volts RMS for 115 watts into 8 ohms.
- Net weight (2.2 lb = 1 kg)
- 26 lb (26 lb 0 oz) / 11.804 kg
- Literature/Schematics (1)
- - - Manufacturers Literature (Hafler DH-220 Instructions for operation and kit assembly dated 1984)
- Author
- Model page created by Howard Craven. See "Data change" for further contributors.
- Other Models
-
Here you find 3 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Hafler Co., David; Pennsauken (NJ)