Originally Posted by mob17
To do this you need to play a 1khz sine wave test tone, and measure the ac voltage at the amp output terminals. Not all multimeters will be able to detect this at 1khz, but i know for a fact the model i sent you does. You can try your one that you have now, it might work but if it's a cheap on then i doubt it.
I guess somebody has given you wrong information or somebody at some stage has perceived it wrong.
Drivers (speakers) are being driven by AC current. So, IMHO, with voltmeter you will be checking the AC current and not frquency of sound.
If you do not get AC current at 1Khz, then simply amp is not abled to produced those signals or xovers are not set in that range.
Type of voltmeter becomes irrelevant here as far as it can measure AC voltage within the abilities of drivers / amps range (Lets say upto 20V for 100W driver with 4 ohm amp).
If I am wrong, please correct me.