Two-channel amplifier speaker switcher, two in and one out (or one in and two out)
Function description: Two dual-channel power amplifiers can be converted to a pair of speakers; or one dual-channel power amplifier can be converted to two pairs of speakers. No need to unplug and plug wires frequently! Equipment PK is even between raising hands! Use silver alloy contact switch, 2.5 square 4N oxygen-free copper wire or Taiwan imported single crystal copper silver-plated wire, pure copper gold-plated small terminal.
As an audio/music enthusiast with a certain age, it is common to have more than two pairs of speakers or more than two power amplifiers at home. In order to balance HIFI and AV, sweetness and speed, often plugging in and out of the speaker cable is not a solution, and it even affects the mood of listening to music.
This switcher is a passive device, simple and does not have to worry about sound dyeing, and the selected parts are purely hand-welded with a soldering station. A 20-year veteran enthusiast.
It can be one-in, two-out or adjusted to two-in and one-out.
Using high-current silver alloy contact switch, the contact resistance is ultra-low, comparable to Omron’s 30A silver contact relay, please refer to the picture of the bridge. Errata of popular opinion: Silver is a metal that is very easy to oxidize, especially as a switch contact, when there is a high current and temperature. Generally, the silver contacts of high-quality civilian switches or relays are silver alloys, and it is absolutely impossible to use pure silver. Our Omron relay supplier confirmed this. Nitrogen or oil immersion is another matter!
Order description:
Type A and Type B are only different in the case material. Type A is an iron plastic case, and Type B is an all-aluminum wire-drawing case. Both use 2.5 square 4N oxygen-free copper wire.
C type and B type chassis have the same shell material, only the wires are different, C type uses single crystal copper silver-plated wire.
Packing list:
1 * Amplifier speaker switcher
Wiring instruction diagram:
The new panel has lettering
Shell material comparison
1. All-aluminum wire-drawing shell, front and rear laser lettering
2. The upper and lower iron covers are painted with ABS plastic at the front and back
Comparison behind two different shells
1. All aluminum wire drawing shell
2. Iron-plastic combined shell
Two shell size comparison
Unit: mm
Witness the moment of quality! Please see the impedance value of the switcher at a test frequency of 1000 Hz with a digital bridge: 1.9 milliohms. What does it mean? For example, the contact resistance of a wire in a power amplifier or any signal plug socket will be greater than this value.
