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  #1  
Old 11-09-2025, 10:36 AM
Pjaska Pjaska is offline
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Thomson upgrading

Hello! I am trying to get better user experience out of portable thomson 10 inch tv. Sound quality is really crappy and it goes in to 16:9 mode when connecting rgb from scart.
I took out the speaker and its 70mm x 40mm and 25 ohm. I dont know much about audio stuff but 25 ohms sound very high for me, i think they are usually 8?
Is it possible to trick tv some way to stay in 4:3 mode? Something like remove or manipulate 5v/12v rgb switch voltage or other methods?
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Old 11-09-2025, 01:02 PM
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zeno zeno is offline
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For the SPKR common values are 4, 8, 16 & 32 ohms. That is
impedance NOT DC ohms. SO keep in mind it will be close but not exact.
Sorry I cant help you with the format, that stuff drives me NUTS !

73 Zeno
LFOD !
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Old 11-11-2025, 10:05 AM
Pjaska Pjaska is offline
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Ok, so i lifted pin 8 from scart connector and its not going to 16:9 mode (and also need manually set to av channel like with composite). I couldnt find proper replacement speaker so im going to put original back and i was thinking maybe takeing wires from scart and adding aux jack so i can use external speakers. Not ideal but the original sound is just so horrible.


Edit: i started looking around and found a connector with logo that looks like a speaker . Does anybody know what this is for?






Last edited by Pjaska; 11-11-2025 at 10:44 AM.
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Old 11-11-2025, 10:59 AM
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Electronic M Electronic M is offline
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Not much European gear here (if I wasn't into videogames at one point I would have never heard of SCART) in the states but a few 60s German table radios I've seen use that exact external speaker jack...Must have been a long lived standard over there.
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Old 11-11-2025, 11:40 AM
Pjaska Pjaska is offline
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I think i have seen this same thing somewhere before but never given it a second thought.. I would like to know what type of speaker it can handle or does it work like aux jack (needs amplyfying)

Last edited by Pjaska; 11-11-2025 at 11:46 AM.
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Old 11-12-2025, 07:56 AM
Alex KL-1 Alex KL-1 is offline
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Most European equipment having this type of connector are for speaker, already amplified. But is difficult to ascertain about this very model. Well, if is a preamp, the major issue of testing a speaker on this will be almost no sound
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