Matching Speakers to LM386

Posted by Southern Ray on August 2, 2020 at 6:28am

 After lots of searching and reading and in an effort to avoid unleashing the wretched blue smoke, I would like to ask if I have this straight. 

 IF I have two 2.5 watt 3.2 Ohm boombox speakers and if the LM386 has a 4 Ohm to 8 Ohm range, can I assume if I hook them up daisy-chain style that it will make 6.2 Ohms making them OK for use? can resistors be used adjust this?

 Thanks in advance for any help.

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Replies

  • GARAGE HERMIT August 6, 2020 at 9:13pm

    nearly any speaker will work with a LM386, here's one i made using a LM386 and an old draw plus a 12" FANE 15 ohm speaker, sound's fine,

    7303958488?profile=RESIZE_710x

    7303941279?profile=RESIZE_710x
    • Southern Ray > GARAGE HERMIT August 6, 2020 at 9:38pm

       Yeh, I saw this one awhile back. Fell in love with it immediately. Been meaning to tell you for awhile - I like your work. Very  nice work.

      Thank you for the info. 

  • GARAGE HERMIT August 4, 2020 at 10:17pm

    • Southern Ray > GARAGE HERMIT August 4, 2020 at 10:20pm

       Hermit,

      Try again using the HTML Editor on top right of the reply window. I usually "copy" the message before I send it, in case the message disappears.

  • Southern Ray August 3, 2020 at 1:23pm

     Denis,

     Try again using the HTML Editor on top right of the reply window. I usually "copy" the message before I send it, in case the message disappears.

  • Denis U August 3, 2020 at 5:24am

  • Southern Ray August 2, 2020 at 4:47pm

     Thanks for that tip, Brian! Coincidently, I am making a smokey from one of your layouts. Gonna try to add a volume to it since none of my CBGs have a volume control yet. 

  • BrianQ. August 2, 2020 at 2:17pm

    Yea, those are good, do not pass on any Sony made speakers. They don’t fool around? I don’t use anything under 2.5 watts for LM386 amps. Way better than the half watt speaker that’s in a Smokey? 

  • BrianQ. August 2, 2020 at 12:52pm

    Don’t worry, you can’t set anything ablaze with a half a watt & 9 volts of power? And don’t worry about the ohms difference, its a Lo fi amp, not crucial? 


    https://mesaboogie.zendesk.com/hc/en-us/articles/218267437-What-is-...

    • Southern Ray > BrianQ. August 2, 2020 at 1:24pm

      OK, thank you very much! So, then I can use one 3.2 Ohm speaker? (My preference. Two amps!)

This reply was deleted.