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JEFF ROWLAND Model 7

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Technic details

Specifications

Type:
A / AB Composite Class Monaural Power Amplifier
Output power (RMS continuous):
350W (8Ω)
700W (4Ω)
1100W (2Ω)
Power Bandwidth:
0.15Hz to 175kHz, -3dB
Slew Rate:
50 V / µsec.

THD and Noise:
Less than 0.015% (1kHz, 8Ω, 20W)
Less than 0.045% (1kHz, 8Ω, 100W)
Less than 0.06% (1kHz, 8Ω, 200W)
Damping Factor:
Greater than 300 (20Hz to 20kHz, 8Ω)
Greater than 90 (100kHz, 8Ω)
Output Current (20 msec., 1kHz):
50A (Continuous)
150A (Peak, 0.1Ω)
Overall Gain:
26.4dB
Input sensitivity:
136mV (1W, 8Ω)
2.12V (350W, 8Ω)
Input Impedance (Selectable):
Low - 100kΩ
Medium - 20kΩ
High - 600Ω
Features:
Lack of overall or nested negative feedback eliminates time domain distortion
Proprietary distortion canceling techniques minimize amplitude related distortions
Each transistor individually tested and matched for optimum operating characteristics
Constant output impedance maintained over the entire audio range, allowing for universal compatibility with associated equipment
The large number of high-speed bipolar output transistors provides uncompromising reliability and eliminates the need for electronic protection circuitry
A single voltage amplification stage utilizes field effect transistors (operating in trans conductance mode), which increases low-level signal recognition
The absence of capacitors, inductors, fuses and protection circuitry throughout the signal path eliminates the adverse effects of these devices
A specially designed toroidal power transformer supported by the substantial output stage capability
All critical circuitry encapsulated in a thermally conductive epoxy to ensure excellent thermal stability, mechanical integrity and to facilitate ease of service
Included:
AC Power Cord
Various Fuses
XLR Shorting Plugs

Power requirements:
AC 100V, 50 / 60Hz
Power consumption:
400W
Dimensions (W x H x D):
480 x 220 x 610mm
Weight:
52kg
Year:
1986

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