Here's what's going on. I have a 1994 Pioneer VSX D603S. Old ....I know.
There is no sub ports on this unit, only center, front and rear right and left.
It's been connected to a Polk RM5000 set of speakers, also 1994. I've had good surround with all the speakers but recently bought an older power sub that was made by Polk back in the day. My Pioneer doesn't have all the different switches and buttons I've read about in past posts. i.e. LFE and the like. It's got A and B speakers and standard or surround mode.
I have had the regular woofer connected to this unit and it seems to work fine, but the power sub hasn't made a sound as of yet. I have tried to connect it every way I can think and have read here about, but nothing.
The power sub has RCA input and output line level ports, volume control, frequency 50, 75 and 100, a "phase switch that shows REV / NORM and then high level input and high level output.
I have tried so many combinations and have not had one sound at all.
I bought this unit from a gentleman in Vegas who does high quality A/V installs for 20 plus years. He seems to be very very helpful and sells very nice quality gear.
I've not been able to make contact with him today. He may be working, phone off or on a vacation.
I could really use someone's help.......big time !!
Thanks in advance.