This amplifier has essentially the same circuitry as the DC-300, stepped back to 150w, but with a very interesting new feature. Called the IOC ciuruit, the amp compares the input signal to the output – and if there's enough discrepancy, the LED will signal the listener. Not many amps have such a sophisticated and smart way of detecting clipping, in fact this is a feature that not all the D-150A had. This amp has acquired a bit of character over the years, but Crown is gear that gets used, and they were known as bombproof builders.
- Production
- 1975-85
- Condition
- 8/10
- Serial No.
- 27185
- Orig. MSRP
- $479
- Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
- Factory Specs
Type Solid state stereo amplifier
Power Output 80 wpc minimum RMS into 8Ω over a bandwidth of 1Hz-20KHz at a rated RMS sum total harmonic distortion of 0.05% of the fundamental output voltage
Frequency Response ±0.1dB DC-20KHz at 1 watt into 8 ohms; ±1dB DC-100KHz.
Harmonic Distortion < 0.001% from 20Hz-400Hz, and increasing linearly to 0.05% at 20KHz at peak
I.M. Distortion < 0.05% from 0.01 watt to 0.25 watts and < 0.01% from 0.25 watts to peak
Slewing Rate 6 volts per microsecond
Damping Factor > than 400, DC-400Hz into 8 ohms
Output Impedance < 15 milliohms in series with < 3 microhenries
Load Impedance Rated for 8Ω usage; safely drives-any load including completely reactive loads
Voltage Gain 20.6±2% or 26.3±.2dB at maximum gain
Input Sensitivity 1.23 volts ±2% for 80 watts into 8 ohms
Output Signal Unbalanced, dual channel
Dimensions 17"W x 5.25"H x 9"D
Weight 22 lbs.
- Documentation
Crown D150 Owner's Manual
Crown D150A Service Manual
- The History of Crown
- In 1947 an Elkhart, Indiana minister named Clarence C. Moore founded the International Radio and Electronics Corporation (IREC) which, over the years, has become better known as Crown Audio Inc. Moore started by building open-reel tape recorders out of a chicken coop but today, Crown Audio is an industry leader in...
[ Read More ]
- Liner Notes
Crown's first 75 WPC stereo amplifier was the D-150. It was introduced as a smaller version of the beastly DC300. Crown advertised the D-150 as having "performance equal to the famous DC-300." It was optimized for studio monitoring and high-end home Hi-Fi use. It was highlighted against old tube designs, and advertised as having an IC operational amplifier front end and "universal load matching" from 4Ω to infinity. In 1975, Crown increased the output to 80 wpc and released the D-150A
- Stock No.
- 7601333338333
This amplifier has essentially the same circuitry as the DC-300, stepped back to 150w, but with a very interesting new feature. Called the IOC ciuruit, the amp compares the input signal to the output – and if there's enough discrepancy, the LED will signal the listener. Not many amps have such a sophisticated and smart way of detecting clipping, in fact this is a feature that not all the D-150A had. This amp has acquired a bit of character over the years, but Crown is gear that gets used, and they were known as bombproof builders.
Production
1975-85
Condition
8/10
Serial No.
27185
Orig. MSRP
$479
Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
Factory Specs
Type Solid state stereo amplifier
Power Output 80 wpc minimum RMS into 8Ω over a bandwidth of 1Hz-20KHz at a rated RMS sum total harmonic distortion of 0.05% of the fundamental output voltage
Frequency Response ±0.1dB DC-20KHz at 1 watt into 8 ohms; ±1dB DC-100KHz.
Harmonic Distortion < 0.001% from 20Hz-400Hz, and increasing linearly to 0.05% at 20KHz at peak
I.M. Distortion < 0.05% from 0.01 watt to 0.25 watts and < 0.01% from 0.25 watts to peak
Slewing Rate 6 volts per microsecond
Damping Factor > than 400, DC-400Hz into 8 ohms
Output Impedance < 15 milliohms in series with < 3 microhenries
Load Impedance Rated for 8Ω usage; safely drives-any load including completely reactive loads
Voltage Gain 20.6±2% or 26.3±.2dB at maximum gain
Input Sensitivity 1.23 volts ±2% for 80 watts into 8 ohms
Output Signal Unbalanced, dual channel
Dimensions 17"W x 5.25"H x 9"D
Weight 22 lbs.
Documentation
Crown D150 Owner's Manual
Crown D150A Service Manual
The History of Crown
In 1947 an Elkhart, Indiana minister named Clarence C. Moore founded the International Radio and Electronics Corporation (IREC) which, over the years, has become better known as Crown Audio Inc. Moore started by building open-reel tape recorders out of a chicken coop but today, Crown Audio is an industry leader in...
[ Read More ]
Liner Notes
Crown's first 75 WPC stereo amplifier was the D-150. It was introduced as a smaller version of the beastly DC300. Crown advertised the D-150 as having "performance equal to the famous DC-300." It was optimized for studio monitoring and high-end home Hi-Fi use. It was highlighted against old tube designs, and advertised as having an IC operational amplifier front end and "universal load matching" from 4Ω to infinity. In 1975, Crown increased the output to 80 wpc and released the D-150A
Stock No.
7601333338333
