Hello forum members, I have a problem locating the 1/4" HF BI-Amp jack for the SR 4722. Perf board (PCB) mounted jack, 8 pin. Speaker was purchased with jack completely gone. Other solutions to accomplish same function welcomed. Trying to restore to original condition. This cab also needs the 2206, an EV was installed in its place . Any help would be appreciated. BTW, model # of jack seems useless for any search. thanks for any help!