Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.electronics.design > #448952

Re: How to increase the volume of a metronome?

From Tauno Voipio <tauno.voipio@notused.fi.invalid>
Newsgroups sci.electronics.design
Subject Re: How to increase the volume of a metronome?
Date 2017-02-23 16:43 +0200
Organization A noiseless patient Spider
Message-ID <o8msbf$1vp$1@dont-email.me> (permalink)
References <20170213a@crcomp.net> <o7t1dp$rn6$1@dont-email.me> <20170213e@crcomp.net> <20170222b@crcomp.net>

Show all headers | View raw

On 23.2.17 07:54, Don Kuenz wrote:
> Don Kuenz <g@crcomp.net> wrote:
>>
>> Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:
>>> On 13.2.17 17:28, Don Kuenz wrote:
>>>> Greetings,
>>>>
>>>> Comments are sought on additional circuitry to increase the speaker
>>>> volume of the circuit shown between the lines. Comments on circuit
>>>> simplifications are also sought. (Maybe a 555 with a couple of pots is
>>>> as simple as it gets sometimes?)
>>>
>>>
>>> The canonical response is LM386.
>>>
>>> It is not sensible to drive a speaker with a
>>> follower here, it will eat your battery in
>>> no time, and the speaker does not like the
>>> DC bias on it.
>>
>> Good call! You just exterminated the battery eater in my subconscience.
>
> The LM386 connected to Realistic Minimus 0.3 Bookshelf Speaker [1]
> sounds excellent. Although the tempo pot works "as is" my goal is to
> fine tune the pot / C1 circuitry to 40 bpm in fully counterclockwise
> position and 208 bpm fully clockwise position.
>
> My latest LTSpice circuit is included after the Note. It pulls in two
> additional LTSpice subcircuits.
>
> The first subcircuit models an LM386. [2] To use the LM386 just unzip it
> then drop the lm386.asy and LM386.lib files into the folder with the asc
> file included after Note.
>
> The second subcircuit models a loudspeaker. [3] To use it just unzip it
> then drop the Midrange.asc, Tweeter.asc, Wolfer.asc, and Loudspeaker.lib
> into the folder with the asc file. Another goal of mine is to remove the
> explicit declaration of Loudspeaker.lib from the asc file.
>
> Note.
>
> 1. http://www.ebay.com/itm/272541834843
> 2. http://www.eas.uccs.edu/~mwickert/ece3001/lecture_notes/LM386_support_files.zip
> 3. http://www.electro-tech-online.com/attachments/loudspeaker-zip.88991/
>
> ------------------------------------------------------------------------
> Version 4^M
> SHEET 1 960 936^M
> WIRE -384 96 -512 96^M
> WIRE -288 96 -384 96^M
> WIRE 64 96 -288 96^M
> WIRE 112 96 64 96^M
> WIRE 512 96 112 96^M
> WIRE 112 112 112 96^M
> WIRE -384 128 -384 96^M
> WIRE -288 192 -288 96^M
> WIRE -240 192 -288 192^M
> WIRE 112 192 112 176^M
> WIRE 112 192 -16 192^M
> WIRE 112 224 112 192^M
> WIRE -384 256 -384 208^M
> WIRE -240 256 -384 256^M
> WIRE 16 256 -16 256^M
> WIRE -384 304 -384 256^M
> WIRE -240 320 -320 320^M
> WIRE 176 320 -16 320^M
> WIRE 176 336 176 320^M
> WIRE -240 384 -288 384^M
> WIRE 64 384 64 96^M
> WIRE 64 384 -16 384^M
> WIRE 352 384 320 384^M
> WIRE 224 416 176 416^M
> WIRE 352 416 288 416^M
> WIRE 512 416 512 96^M
> WIRE 512 416 480 416^M
> WIRE -384 448 -384 384^M
> WIRE -320 448 -320 320^M
> WIRE -320 448 -384 448^M
> WIRE 16 448 16 256^M
> WIRE 16 448 -320 448^M
> WIRE 320 448 320 384^M
> WIRE 352 448 320 448^M
> WIRE 512 448 480 448^M
> WIRE 544 448 512 448^M
> WIRE 720 448 608 448^M
> WIRE -512 464 -512 96^M
> WIRE -384 480 -384 448^M
> WIRE -288 480 -288 384^M
> WIRE 176 512 176 496^M
> WIRE 320 512 320 448^M
> WIRE 512 576 512 448^M
> WIRE -512 592 -512 544^M
> WIRE -384 592 -384 544^M
> WIRE -384 592 -512 592^M
> WIRE -288 592 -288 544^M
> WIRE -288 592 -384 592^M
> WIRE 720 624 720 448^M
> WIRE -512 640 -512 592^M
> WIRE 512 672 512 640^M
> WIRE 512 768 512 752^M
> WIRE 720 768 720 720^M
> FLAG -512 640 0^M
> FLAG 112 224 0^M
> FLAG 176 512 0^M
> FLAG 320 512 0^M
> FLAG 512 768 0^M
> FLAG 720 768 0^M
> SYMBOL Misc\\NE555 -128 288 M0^M
> SYMATTR InstName U1^M
> SYMBOL res -368 112 M0^M
> SYMATTR InstName Tempo1^M
> SYMATTR Value 125k^M
> SYMBOL res -368 288 M0^M
> WINDOW 0 36 43 Left 2^M
> WINDOW 3 49 74 Left 2^M
> SYMATTR InstName Tempo2^M
> SYMATTR Value 125k^M
> SYMBOL res 160 320 R0^M
> WINDOW 0 -92 42 Left 2^M
> WINDOW 3 -88 69 Left 2^M
> SYMATTR InstName Vol1^M
> SYMATTR Value 500^M
> SYMBOL Misc\\battery -512 448 R0^M
> WINDOW 0 12 95 Left 2^M
> WINDOW 3 17 9 Left 2^M
> WINDOW 123 0 0 Left 2^M
> WINDOW 39 0 0 Left 2^M
> SYMATTR InstName V1^M
> SYMATTR Value 9^M
> SYMBOL cap -304 480 R0^M
> SYMATTR InstName C2^M
> SYMATTR Value 0.1nF^M
> SYMBOL res 160 400 R0^M
> WINDOW 0 -86 47 Left 2^M
> WINDOW 3 -87 76 Left 2^M
> SYMATTR InstName Vol2^M
> SYMATTR Value 500^M
> SYMBOL lm386 416 400 R0^M
> SYMATTR InstName U2^M
> SYMBOL polcap 96 112 R0^M
> SYMATTR InstName C3^M
> SYMATTR Value 100\xc2\xb5F^M
> SYMATTR SpiceLine Rser=1^M
> SYMBOL polcap 544 464 R270^M
> WINDOW 0 32 32 VTop 2^M
> WINDOW 3 0 32 VBottom 2^M
> SYMATTR InstName C4^M
> SYMATTR Value 250\xc2\xb5F^M
> SYMATTR SpiceLine Rser=1^M
> SYMBOL polcap -400 480 R0^M
> SYMATTR InstName C1^M
> SYMATTR Value 2.2\xc2\xb5F^M
> SYMBOL polcap 496 576 R0^M
> SYMATTR InstName C5^M
> SYMATTR Value 0.05\xc2\xb5F^M
> SYMBOL res 496 656 R0^M
> SYMATTR InstName R1^M
> SYMATTR Value 10^M
> SYMBOL Woofer 720 672 R0^M
> WINDOW 38 -32 28 Right 2^M
> SYMATTR SpiceModel IB3858^M
> SYMATTR InstName U3^M
> SYMBOL polcap 224 432 R270^M
> WINDOW 0 32 32 VTop 2^M
> WINDOW 3 0 32 VBottom 2^M
> SYMATTR InstName C6^M
> SYMATTR Value 10\xc2\xb5F^M
> TEXT -392 616 Right 2 !.tran 10 uic^M
> TEXT -8 176 Left 2 ;1^M
> TEXT -8 240 Left 2 ;2^M
> TEXT -8 304 Left 2 ;3^M
> TEXT -8 360 Left 2 ;4^M
> TEXT -296 368 Left 2 ;5^M
> TEXT -296 304 Left 2 ;6^M
> TEXT -296 240 Left 2 ;7^M
> TEXT -296 176 Left 2 ;8^M
> TEXT 80 848 Left 2 !.lib Loudspeaker.lib^M
> ------------------------------------------------------------------------
>
> Thank you,
>
> --
> Don Kuenz KB7RPU
>

Thanks for the feedback.

Where did you get the symbols and models for LM386 and speaker?

-- 

Tauno Voipio OH2UG

Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 15:28 +0000
  Re: How to increase the volume of a metronome? Tim Wescott <tim@seemywebsite.com> - 2017-02-13 11:15 -0600
    Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 19:28 +0000
  Re: How to increase the volume of a metronome? Don Y <blockedofcourse@foo.invalid> - 2017-02-13 11:21 -0700
    Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 19:28 +0000
      Re: How to increase the volume of a metronome? Don Y <blockedofcourse@foo.invalid> - 2017-02-13 13:00 -0700
  Re: How to increase the volume of a metronome? bitrex <bitrex@de.lete.earthlink.net> - 2017-02-13 13:42 -0500
    Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 19:58 +0000
  Re: How to increase the volume of a metronome? Tim Wescott <seemywebsite@myfooter.really> - 2017-02-13 12:43 -0600
    Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 19:47 +0000
    Re: How to increase the volume of a metronome? bitrex <bitrex@de.lete.earthlink.net> - 2017-02-13 18:05 -0500
  Re: How to increase the volume of a metronome? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-02-13 21:30 +0200
    Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-13 19:54 +0000
      Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-23 05:54 +0000
        Re: How to increase the volume of a metronome? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2017-02-23 16:43 +0200
          Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-23 15:23 +0000
            Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-23 16:29 -0800
              Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-24 02:15 +0000
                Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-24 01:49 -0800
                Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-24 14:56 +0000
                Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-24 07:21 -0800
                Re: How to increase the volume of a metronome? rickman <gnuarm@gmail.com> - 2017-02-24 14:11 -0500
                Re: How to increase the volume of a metronome? rickman <gnuarm@gmail.com> - 2017-02-24 15:28 -0500
                Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-24 12:37 -0800
                Re: How to increase the volume of a metronome? rickman <gnuarm@gmail.com> - 2017-02-24 15:46 -0500
                Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-24 13:23 -0800
                Re: How to increase the volume of a metronome? rickman <gnuarm@gmail.com> - 2017-02-24 17:49 -0500
                Re: How to increase the volume of a metronome? Don Kuenz <g@crcomp.net> - 2017-02-25 03:43 +0000
                Re: How to increase the volume of a metronome? tabbypurr@gmail.com - 2017-02-24 23:03 -0800
                Re: How to increase the volume of a metronome? rickman <gnuarm@gmail.com> - 2017-02-25 03:20 -0500
  Re: How to increase the volume of a metronome? Jasen Betts <jasen@xnet.co.nz> - 2017-02-15 11:11 +0000

csiph-web