Re: AF AMP VE3EFJ third mixer mod for the R4C
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Gary!!! Bravo! I too used a device like that for mine( TDA7377)... I removed the original jensen speaker, used a lower efficiency driver, yet one with better listening specs. My MS-4 has been modified into a more practical speaker enclosure also. I tossed the cardboard speaker escutcheon and made a proper one out of hardwood ply. Lots of other things to make the box have more decent response also... Those TDA modules are great! I get about 10-11 watts from mine. 2.5 watts does not cut it when guys are now hell bent on 2.8kHz bandwidth or more. Doing all this and using one of Franks 2.8 filters was very liberating. I thought about using in bridged mode, yet 10-11 watts is flat enough.
On Wednesday, January 1, 2025 at 11:33:55 AM EST, Gary WB6OGD via groups.io <winbladgary@...> wrote:
It's a waste of time and money to design an AF amp for the Drake.
I used a (now) 75cent complete TDA2030 module from china.
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Like this one:
https://www.ebay.com/itm/314750105717?_skw=TDa2030+amplifier+module&itmmeta=01JGHB55413WV2745A8XBJYQBN&hash=item4948917875:g:upwAAOSwiFZky38Y&itmprp=enc%3AAQAJAAAA8HoV3kP08IDx%2BKZ9MfhVJKl9LzhQlEV7hr7qISFGACsJ4nRv905MP85TlwPdXY5R6c3VMsAxJIQKAv5Wui8d0Yi5pi9YIYuzUCSjP5ml2suXZumYP9VjoXxEuLgFUi%2FbDTCLNL%2Bfzq1996uV4tf62yNmyWpQMXYoXUZz8Vv9amSvPAB9B%2B0dDCc1DrezcMlCO9tR6%2FQCZNyVOKUH0VaPBtchCvaYlnLrPBcthdKwTS0tsusftmUTkrWDt3q1FPcmtYKvA7qfjd%2FramvBIYhkHsdzm2t9cFMXaqQoBKG16X7Bgfc83okBCT8p2OAuM1pXVw%3D%3D%7Ctkp%3ABk9SR57SlKuEZQ
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See my Folder in the Files section:
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73,
Gary
WB6OGD
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