Ed,
You have me curious; there will be a small amount of noise when it is not plugged into anything or the signal is very weak, and we did increase the amp strength to give it a little more punch in the lows.
You should not have that much noise. When the unit is off, hold both buttons for 7 - 9 seconds you will see the lights flash rapidly and the two units will reconnect. This is also how you can get 4 receivers to listen to 1 transmitter signal. This will also change the frequency it is broadcasting on.
Let me know if this changes anything or better yet call me at the office. I would be very interested to talk with you about this as I know you have "trained" ears.
The transmitter does act like a preamp if you over drive it i.e. using an amp and driving it to hard it will boost the gain but eventually will get distorted. The same is true for computers, as most sound like garbage until you adjust the wave volume down and use just the volume control.
I want to make sure we have your problem locked down. Also, let me know what treble tip and bass port combo you are using so I know what your frequency response is. If your + port is modded let me know that so I can estimate the effects that has on other frequencies.
Jason
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