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.
Technical Specifications
| Model 1 | |
|
|
|
Output power |
| 60 watts RMS continuous, 8 ohms |
| 120 watts RMS continuous, 4 ohms | |
|
| 215 watts RMS continuous, 2 ohms |
Power Bandwidth |
| 0.3 Hz to 300 kHz, |
Slew Rate |
| 70 volts per microsecond |
THD and Noise |
| Less than .025%, 1 kHz, 8 ohms, 20 watts |
| Less than .035%, 1 kHz, 8 ohms, 60 watts | |
|
| |
Damping Factor |
| Greater than 200, 20 Hz to 20 kHz, 8 ohms |
| Greater than 85 100 kHz, 8 ohms | |
|
| |
Output Current |
| 22 amps peak, continuous |
| 55 amps peak, 0.1 ohm, 20 msec, 1 kHz | |
|
| |
|
|
|
Overall Gain |
| Selectable: 20, 26, 29.5, 32 dB |
Sensitivity |
| 136 mV, 1 watt, 8 ohms |
Input Impedance |
| Selectable: 100k, 20k, 600 ohms |
Common Mode Rejection Ratio |
| Greater than 90 dB |
