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can i plug old monitor's built-in speakers into the pi3?

Posted: Mon Sep 23, 2019 5:45 am
by blueagent
i read the old posts about the audio port of the pi3 not working with pc speakers due to insufficient power, but what about old monitors with built in speakers which draws power from monitor's power supply? will the pi3 be able to output audio if its connected to the built-in speakers that way?

(i haven't bought the monitor with built-in speakers yet so i can't test it out for myself)

thanks for the help!

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Mon Sep 23, 2019 5:48 am
by rpdom
Yes. The monitor audio input should be line level, which the Pi can drive without a problem.

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Mon Sep 23, 2019 5:51 am
by W. H. Heydt
blueagent wrote:
Mon Sep 23, 2019 5:45 am
i read the old posts about the audio port of the pi3 not working with pc speakers due to insufficient power,...
I don't know where you read that, but it's not the case. In general, "PC speakers" are self-powered and that's exactly what one is looking for in speakers for a Pi.

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Mon Sep 23, 2019 6:38 am
by rpdom
W. H. Heydt wrote:
Mon Sep 23, 2019 5:51 am
blueagent wrote:
Mon Sep 23, 2019 5:45 am
i read the old posts about the audio port of the pi3 not working with pc speakers due to insufficient power,...
I don't know where you read that, but it's not the case. In general, "PC speakers" are self-powered and that's exactly what one is looking for in speakers for a Pi.
Some of the smaller and cheaper speakers are not powered. I've used some that relied on the PC to provide a speaker level output, not line level.

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Mon Sep 23, 2019 7:10 pm
by alphanumeric
And people have just bought bare speakers, with the intent to mount them in a project and discovered they need an amplifier to drive them. Like these, https://www.adafruit.com/product/1669 I have a set, I used this to drive them, https://www.adafruit.com/product/987

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Tue Sep 24, 2019 12:32 am
by blueagent
rpdom wrote:
Mon Sep 23, 2019 5:48 am
Yes. The monitor audio input should be line level, which the Pi can drive without a problem.
Image

yeah from looking at images of the monitor that seems to be the case, the speakers are definitely self-powered internally.

W. H. Heydt wrote:
Mon Sep 23, 2019 5:51 am
I don't know where you read that, but it's not the case. In general, "PC speakers" are self-powered and that's exactly what one is looking for in speakers for a Pi.
thanks for clearing it up for me, i originally read about it here: https://www.raspberrypi.org/forums/view ... p?t=180128

someone was trying to use pc speakers with the pi3, but it doesn't work because the pi will only give enough output for earphones or something.

alphanumeric wrote:
Mon Sep 23, 2019 7:10 pm
And people have just bought bare speakers, with the intent to mount them in a project and discovered they need an amplifier to drive them. Like these, https://www.adafruit.com/product/1669 I have a set, I used this to drive them, https://www.adafruit.com/product/987
thanks for the recommendation!

Re: can i plug old monitor's built-in speakers into the pi3?

Posted: Tue Sep 24, 2019 12:59 am
by W. H. Heydt
blueagent wrote:
Tue Sep 24, 2019 12:32 am
W. H. Heydt wrote:
Mon Sep 23, 2019 5:51 am
I don't know where you read that, but it's not the case. In general, "PC speakers" are self-powered and that's exactly what one is looking for in speakers for a Pi.
thanks for clearing it up for me, i originally read about it here: https://www.raspberrypi.org/forums/view ... p?t=180128
The OP in that thread said "ordinary speakers" (implying to most people here, bare speakers with no built-in amp) rather than "PC speakers" that are self powered. The rest of that thread goes into those issues.