Warm Audio WA-EQP
Busy with a customer’s Pultec clone: Warm Audio WA-EQP passive equalizer with a tube driver circuit. This unit w威而鋼 as defective and had some minor issues when it came in. On the customers demand I replaced all the capacitors with high quality ones, carefully selected to fit the tight space on the pcb’s. Tubes will […]
QUAD II
Investigating a complete QuadII set of a customer, with preamp and tuner included. There are some components which need to be replaced. As you can see on the scope, one of the two smoothing capacitors is bad and needs to go. The original metal blocking capacitors have been taken out at some point in the […]
Maintenance of a 1971 Cadac G series large format console
Musicality sometimes lies deeply embedded in inductor cores and capacitor magic. It was a pleasure to help with solving electronic problems in a legendary Cadac G series mixing console. This beast (yes, a real heavy one: a single rail supply, solid state transistor design. No gyrators, inductors only! 👌) actually gave me goosebumps. Not only […]
Se Electronics T2 condenser microphone repair
Today a condenser microphone found its way to my bench for repairs. It had a nasty intermittent problem which occurred so now and then with a drop-out of signal whilst adding noise. I opened it up and found an interesting and transformerless circuitry, where the pcb is populated with through-hole and surface mount components. There’s […]
Sansui SA-717
The initial problems were sound cut-off at the amplified speaker terminals when loading the amplifier and scratchy potentiometers/s必利勁 witches. After first inspection I found several suspects which could be the source of the problems. All had to be addressed for ruling out: – between 25 and 38mV DC between speaker terminals – intermittent contact in […]
Long throw infra bass
One of my engineers inspecting the latest revisions on the soon to be released long throw infra bass projector…
Dynacord Echocord Mini – Sold
Are you looking for the psychedelic sound from the sixties? Using a tape echo machine in your recordings can really give the sound a vintage vibe. Anyway, lots of use for this refurbished machine. Brought back to it’s former glory with all the electrolytic capacitors replaced and minor faults repaired. Comes with several tape loops. […]
Christmas show
Stage for tonight… Small orchestra and a choir. Beautiful acoustics, I should have brought my recording equipment…
McIntosh C504 preamp and MC502 power amplifier
McIntosh Labs audio amplifiers are known for it’s sublime quality. Although they’re famous for their tube amplifiers, their Solid State amplifiers are also state of the art, high quality equipment. A customer happened to buy a fairly old pre-amp and power amp in good shape. He wasn’t shure if it was safe to fire them […]