Arch Linux

Roken

Member

From: South Wales, UK

Registered: 2012-01-16

Posts: 1,363

[SOLVED] speaker-test to centre speakers?

I can't find this, and I'm sure it's possible. On a stereo system, running through an external amp, is it possible to generate a tone such that I can adjust my amp to centre stage? i.e. identical tone from each speaker at identical volume, so I can adjust the LR balance to find centre?

Last edited by Roken (2023-06-24 23:25:02)

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Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,484

Website

Re: [SOLVED] speaker-test to centre speakers?

Are you sending multichannel (i.e., more than 2) from the arch system to the external amp, or are you sending stereo and having the external amp mix other channels?  In the case of the former, speaker-test has the "-s" flag to send to a specific channel; or in the latter, it would depend on how the external amp is generating the center signal, but I'd assume it's just a mix of L/R, so send on both channels from the arch system.

EDIT: I may have misread, are you trying to send to a speaker that is a center channel, or are you trying to send a signal in order to center / align just two stereo speakers?  If you just want a pure tone sent to each of two speakers, use `play`, e.g., for (very close to) middle C (where 10 is 10 second duration):

play -n -c 3 synth 10 sine 262

Last edited by Trilby (2023-06-24 23:10:19)

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Roken

Member

From: South Wales, UK

Registered: 2012-01-16

Posts: 1,363

Re: [SOLVED] speaker-test to centre speakers?

Wow - thank you. That's exactly what I wanted. My amp is a 25 YO Technics amp which had lost the knobs a long time ago. I 3D printed some, but needed a way to balance the speakers more precisely than turning the whole way one way, then the other, and guessing for the middle Now they are balanced.

You guys are awesome.

EDIT: For clarity, balancing is important for the rest of my music, especially vinyl and, to a lesser degree (because I use them less often) CD, and rarely, cassette tape, so a simple balance from the PC will fix all of them.

Last edited by Roken (2023-06-24 23:28:10)

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Ryzen 5900X 12 core/24 thread - RTX 3090 FE 24 Gb, Asus B550-F Gaming MB, 128Gb Corsair DDR4, Fractal Design Define 7 XL, 5 HD (2 NvME PCI, 4SSD) + 1 x optical.
Linux user #545703

/ is the root of all problems.