sda-1a inside tweeters have no sound, how you fix is this a known issue

dts MA 7.1

Please let me know. swapped them with new from polk ,my it be a connection problem.

Mystery

Take tweeter out and check with a multimeter or connect speaker wire directly to the tweeter at low volume.
If it works, then connection or crossover is problematic.

halo71

Have you got the interconnect cable connected?

westmassguy

The inner tweeters are the stereo tweeters, if you have the speakers setup correctly. They will work with or without the interconnect cable. Your 1As should have two fuse blocks mounted on the binding post cups. Check both fuses. 1 amp, fast blow, AGC BUSS fuses.
Correction, it may or may not have fuse blocks. If it doesn't, then you have Polyswitches.
The Polyswitches could be bad, or you could have burned resistors on the crossover.