February 2023 - Halium Solutions

300B valve surgery

With the Cary 300SE Monobloc amp in the previous post, turned out the intermittent popping sound was one of the expensive 300B valves! Customer had already considered new valves, so with nothing to lose thought lets just check the connections and after extracting some solder from the pins, found this! One of the wires loose, […]

Cary 300se Monoblock Amps

17 February 2023 (reading time 2 minutes)

A friend reported intermittent issues with loud pops from one of speakers connected to his Cary 300SE monobloc setup. After some diagnosing swapping leads round to rule out the preamp, the issue stayed with one of the monoblocks. Suspected perhaps intermittent shorting of high voltage capacitor plates. Brought them over and found quite a number

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