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Hardware

Hewlett Packard 3478A Digital Multimeter, 5.5 digits

Ebay is full of good deals. I secured this HP3478A for little money. The battery saving the calibration data had to be replaced, it was 29 years old and specified for 10 years. This needed a significant effort with diverse Read more…

By Charles Bueche, 3 years01.09.2020 ago
Hardware

Mivoc AM 80 MKII : boosted auto-on sensitivity

The AM 80MKII amplifier module is designed for the use in an amplified subwoofer. I bought it from Lautsprechershop in Germany. I mounted this plate amp into an old JBL 125 subwoofer, it worked great after some tuning of the Read more…

By Charles Bueche, 3 years27.06.2020 ago
Hardware

Another amplifier is born

Based on the same schematics as the initial push-pull amplifier but using Toroidy transformers, and a Broskie attenuator module to make it an “integrated amplifier”. Full details.

By Charles Bueche, 4 years03.05.2020 ago
speaker cables
Hardware

More speaker cables

Even thicker material than the last version : 4mm2 (AWG 12) pure-copper, PureLink cables. DCR 10mΩ, inductance 1,6 µH, capacitance 160 pF, length 2m50, gold-platted Nakamichi 4mm plugs.

By Charles Bueche, 4 years07.03.2020 ago
Goo on Logitech board
Hardware

Fixing hum in Logitech Z-2300 speaker system

Introduced more than 10 years ago (versions between 2003 and 2006 from what I found online), the Logitech Z-2300 provides 200 watts of total RMS Power, 2 x 40 Watts into eight ohms for the satellites and 120 watts RMS Read more…

By Charles Bueche, 4 years ago
Hardware

Speaker cables

Nowadays almost everyone cares a lot more about the look of things and much less about their functionality, so after seeing an inspirational post by Archimago and having heard mumbling on the cables I was using, I came up with Read more…

By Charles Bueche, 4 years23.02.2020 ago

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