Originally posted by Millstonemike
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Bluetooth Stereo Amp to Mono
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Originally posted by prufrok View Post
Thanks but this is just a a mono amp, i think i actually have this one. I'm referring to bluetooth integrated amps
Modifying the integrated board entails identifying the connections between the output of BT receiver chip and the amp chip's input. Then performing some surgery on the board to put mono summing resistors between those chips (and use one amp output channel). Not easy especially with SMD technology. If your have the mono amp, mate it with a separate BT receiver board and perform the summing between them. There's no credible solution for summing at the amp's power outputs. These chip amps are not bridgeable.
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Originally posted by Millstonemike View PostHere's a mono amp. Ignore the power rating. With a 24 V PS, you'll get a nominal 33 W rms (<1% THD) into an 8 ohm speaker. At 12 V, you'll only get about 8 - 9 W rms. If you use an old laptop PS at 19 V, that will deliver ~ 20 W rms.
Use Sydney's references for summing the signal between the BT source and this amp.
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Originally posted by Sydney View PostFeed the amplifier a mono signal?
http://antiqueradios.com/forums/view...?f=12&t=298678
https://www.antiqueradio.org/art/iPo...rSchematic.jpg
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Here's a mono amp. Ignore the power rating. With a 24 V PS, you'll get a nominal 33 W rms (<1% THD) into an 8 ohm speaker. At 12 V, you'll only get about 8 - 9 W rms. If you use an old laptop PS at 19 V, that will deliver ~ 20 W rms.
Use Sydney's references for summing the signal between the BT source and this amp.
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Originally posted by Sydney View PostFeed the amplifier a mono signal?
http://antiqueradios.com/forums/view...?f=12&t=298678
https://www.antiqueradio.org/art/iPo...rSchematic.jpg
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I added a stereo to mono line input on a Philco console and used the schematic on Figure 2 of this link (The rane note,Why Not Wye?).
Worked out just fine.
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Feed the amplifier a mono signal?
http://antiqueradios.com/forums/view...?f=12&t=298678
https://www.antiqueradio.org/art/iPo...rSchematic.jpg
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Bluetooth Stereo Amp to Mono
Hi, relative newbie here.. I am taking old radios and adding new guts to them (pics below are examples - not what I have used). the issue I am having is that amps i have are stereo and I want to output to mono but i can't seem to find a mono bluetooth amp except a 6W one on ebay. The speakers I hope to use are inexpensive, used 2 way and 3 way speakers from home theaters as I find I can get them quite cheap and their size is a good fit. How do I get a mono signal from a stereo amp? I tried the trick of adding resistors before combining left/right channels and it worked but it had a big impact on volume (because it was done after the amp?). Any suggestions that are not overly complex?Tags: None
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