Ton Giesberts
About the article

5.1 Surround Switch Box

simple but extremely useful

5.1 Surround Switch Box
Of necessity, today’s (surround) amplifiers have to come with lots of inputs and outputs. However, a problem occurs if you want to use several signal sources having an analogue 5.1 output: there’s only one compatible input available! The switch box described in this article solves the problem in a simple and elegant way.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1 = 10?
C1 = 100 µF 25V radial
K1-K18 = cinch socket, chassis mount, gold-plated, 6.3mm threading
S1 = switch, 1 make contact
RE1,RE2,RE3 = 12V relay, 2 changeover contacts, e.g., Meisei M4-12H 960 ?/12 V (Conrad Electronics order code 505170) or equivalent.
PCB, ref. 054009-1 from ThePCBShop
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