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Author Topic: Talking House transmitter audio upgrade  (Read 170 times)

Offline ChrisSmolinski

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Talking House transmitter audio upgrade
« on: May 16, 2020, 1123 UTC »
I was rather annoyed with the poor bass response of the TH transmitter (Rev 4.6). OK, poor is an understatement, pretty much everything below 700 Hz or so was missing. I ended up putting a non polarized 1 uF capacitor in parallel with C301 (located near the center of the PCB, it's a green capacitor) which improved the bass response down to around 40 Hz. I also put an equalizer in the audio chain, to help boost the bass a bit more.   Thanks to Dave Richards for pointing me in the right direction.
Chris Smolinski
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Offline Dave Richards

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Re: Talking House transmitter audio upgrade
« Reply #1 on: May 16, 2020, 1615 UTC »
Glad you were able to improve the bass response somewhat Chris. I suppose that, given the original intended purpose of these units, we shouldn't be expecting too much in the way of quality audio from them. I have never used one, but picking up a used TH seems like it might be a good way to dabble in Part 15 without breaking the bank. I nearly fell off my chair when I first discovered the price of a Rangemaster!
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