Greetings from Vermont
I have a Dayton SA1000 which seems to be in excellent condition. When I ran it through the pre out of my old Yamaha DSP -A3090 the volume was extremely low from a 15” sub. So I ran it through a smaller sub still minimal volume. I am not in anyway versed on repairs in regards to audio equipment. I do have a bolt meter and can follow some basic instructions. Any suggestions would be much appreciated.
I have a Dayton SA1000 which seems to be in excellent condition. When I ran it through the pre out of my old Yamaha DSP -A3090 the volume was extremely low from a 15” sub. So I ran it through a smaller sub still minimal volume. I am not in anyway versed on repairs in regards to audio equipment. I do have a bolt meter and can follow some basic instructions. Any suggestions would be much appreciated.
Hi James, welcome to the SPA club. My 250 died a couple of weeks ago. You might want to remove the amplifier for bench testing. With power removed, visually inspect the circuit boards. Look for buckled caps and burned resistors (very common). If the boards look good, you can try inserting an audio signal. Turn the frequency control to maximum and the gain to 12 O’clock. Use an audio source adjusted to 1 volt at the input. Switch the amp to ON and monitor the output voltage with your DVM. You should have a minimum of 20 Volts, probably much higher depending on the circuit’s power amp gain. Leave the leads attached to the amp’s output while rotating the GAIN knob slowly down to zero, while watching for any sudden drop outs.
The full output of 1000W @ 4 Ohms is about 15Amps at 63 Volts. With no load, the amp should easily generate 60 Volts with the gain control advanced to maximum. * CAUTION * Dangerous voltages are present. Do not leave the amp sitting at full power with a sine wave input as this might overheat he amp. Good luck- EVMan
The full output of 1000W @ 4 Ohms is about 15Amps at 63 Volts. With no load, the amp should easily generate 60 Volts with the gain control advanced to maximum. * CAUTION * Dangerous voltages are present. Do not leave the amp sitting at full power with a sine wave input as this might overheat he amp. Good luck- EVMan
Hi James (again), The SPA1000 has a summing circuit that combines left and right inputs. This effectively doubles your gain. You can try using a 'Y'' Adapter to drive both L+R and see if power is restored. Obviously, you want to do this with power removed. If your amp is new (less than 5 years) it should still be under warranty. PE is a good outfit and they can probably help out with your problem. EVan