Harman Kardon Avr 51 User Manual 134 Upd Work -

: Compatible with 6, 8, or 16-ohm speakers. Critical Setup & Safety Instructions

: For the modern AVR 161S 5.1 channel receiver, a manual can be found at Harman-Kardon Avr-51 Schemat | PDF - Scribd harman kardon avr 51 user manual 134 upd

Here is the specific feature explanation for that manual reference: : Compatible with 6, 8, or 16-ohm speakers

Tell me the or behavior (e.g., unit won't power on, no sound). : Compatible with 6