jensen 990 transformer out question
- Thread starter hitchhiker
- Start date
Help Support GroupDIY Audio Forum:
hitchhiker
Well-known member
OK thanks,
Next question, what is the output impedance of the API 2520 or Sphere SPA62 etc ? aren't most DOA's closer to 150 than 600 ohm output impedance?
Next question, what is the output impedance of the API 2520 or Sphere SPA62 etc ? aren't most DOA's closer to 150 than 600 ohm output impedance?
Output impedance of most opamps will be close to zero. The question of 150 or 600 ohms is whether the opamp can provide enough current to drive that load. That's the difference between an opamp and a power amplifier and everything in-between. One can supply 10 or 20mA to the load, the other can supply a couple of amperes. But both have an output impedance of practically zero.
hitchhiker
Well-known member
thanks, One reason I was wondering about the parallel wiring was that the JT-123 spec sheet seemed to imply that the best
CMRR was when wired the way it was shown, series : series that is.
CMRR was when wired the way it was shown, series : series that is.
Similar threads
