Bose Professional FreeSpace FS4CE In-Ceiling 4.5" 841156-0410
White Bose Ceiling Speaker FS4CE, 8 Ohms, 40watt Rms
Alfatron ALFC-606 | Alfatron Electronics
How do I connect to these? I just bought a new house and the house came with these Bose speakers in the ceiling, but I can't figure out how to turn them