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1. Check the rail fuses; on the Model 1, these are located on the inside of the amp
adjacent to the encapsulated transformer. A fuse can often look good even if it is
actually bad. If possible, check the fuses with a meter.
2. If the fuses are good, disconnect the inputs from the amp and see if it will power up
again. Your amplifier will generally only shut down if it senses DC, thus protecting your
speakers. Certain associated equipment can occasionally pass DC.
If the above suggestions do not work or you are having other problems,
please contact your Jeff Rowland Design Group dealer.
Output power
Power Bandwidth
Slew Rate
THD and Noise
Damping Factor
Output Current
Overall Gain
Sensitivity
Input Impedance
Common Mode Rejection Ratio
Technical Specifications
Model 1
60 watts RMS continuous, 8 ohms
120 watts RMS continuous, 4 ohms
215 watts RMS continuous, 2 ohms
0.3 Hz to 300 kHz, -3 dB
70 volts per microsecond
Less than .025%, 1 kHz, 8 ohms, 20 watts
Less than .035%, 1 kHz, 8 ohms, 60 watts
Greater than 200, 20 Hz to 20 kHz, 8 ohms
Greater than 85 100 kHz, 8 ohms
22 amps peak, continuous
55 amps peak, 0.1 ohm, 20 msec, 1 kHz
Selectable: 20, 26, 29.5, 32 dB
136 mV, 1 watt, 8 ohms
Selectable: 100k, 20k, 600 ohms
Greater than 90 dB
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