ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi all, and belated Happy New Year from the Highlands.
Just finished a refoam of my Pentas, and a full recap (thanks to Martins kit) of amp, and crossovers. No-load current set to 29mV and offset smack on zero. Circuit voltages checked are also o.k.
Speakers sound as good as new, with the exception that one speaker will not operate on med/max input level. Minimum level is fine and probably adequate for the BM5500 I'm currently using but I would obviously like to have them both fully operational.
Switching to med/max gives no output and a slight hum, and switching off gives a huge thump, like a cap discharging. Had a look at the circuit diagram and the only common component to the med/max switch positions seems to be the 4066 quad switch.
Not being more than an amateur I would welcome some advice or guidance from anyone more knowledgeable, or anyone familiar with the symptoms before I dismantle again.