JasonKerner Posted October 1, 2017 Share Posted October 1, 2017 Has anyone managed to solder a TTS sound decoder to a non-DCC ready loco? Usually, you can solder the orange, grey, red and black wires directly to the motors & pickups - but if you did that to a TTS decoder, would the sound still be controllable via the functions on the controller?Cheers Link to comment Share on other sites More sharing options...
Chrissaf Posted October 1, 2017 Share Posted October 1, 2017 ......but if you did that to a TTS decoder, would the sound still be controllable via the functions on the controller?.Yes Link to comment Share on other sites More sharing options...
Howbi Posted October 1, 2017 Share Posted October 1, 2017 The installation is exactly as you described, the only difference with the TTS is the speaker........just think of it as a standard decoder with a sound chip attached.........full configuration instructions come with the TTS but, basically, it is plug & play........to improve motor control it is best to change CV150 to 1.......HB ps.......I prefer to wire up a permanent 8 pin socket so that any decoder could be replaced anytime without resorting to the soldering iron again....... Link to comment Share on other sites More sharing options...
Lanc Posted January 5, 2018 Share Posted January 5, 2018 my apologies if I'm butting in on the original enquiry, but further to Jasons original enquiry, I understand the wiring requirements but wonder if there would be any problems if wired to ringfield tender mounted loco's ? e.g I have a hard wired DCC tender mounted A4 that I would like to add sound to. Link to comment Share on other sites More sharing options...
Howbi Posted January 5, 2018 Share Posted January 5, 2018 Paul........if your A4 tender drive is running successfully with a hard-wired decoder then it should be no problem to replace it with the TTS as long as there is enough space for the speaker........the supplied round speaker is often too big so you may have to get a 'Suger Cube' size speaker...........HB Link to comment Share on other sites More sharing options...
Lanc Posted January 5, 2018 Share Posted January 5, 2018 Hi, i hoped that would be the case,the A4 is old but running beautifully on DCC at the moment & sound would enhance it. my concern was wether the electrical load would lead to overheating & possibly burning out the decoder. Needless to say ohms, volts & watts are a mystery to me. So many thanks for the help.cheers Link to comment Share on other sites More sharing options...
Fishmanoz Posted January 5, 2018 Share Posted January 5, 2018 What type of decoder do you have in it currently and how many amps can it supply? If the answer is that you currently have fitted a decoder that can handle more than 500mA, the TTS motor load limit, then you will need to do a stall current test to make sure it doesn’t exceed 500mA. If the answer is that you currently have an R8249 fitted, then we know it will be fine. Link to comment Share on other sites More sharing options...
Lanc Posted January 6, 2018 Share Posted January 6, 2018 Yes I can confirm it is an r8249 & is running fine. Can I just ask, I assume performing a stall current test with a DCC loco would be the same procedure as non Dcc Link to comment Share on other sites More sharing options...
Fishmanoz Posted January 7, 2018 Share Posted January 7, 2018 Unless you have a multimeter that can accurately handle the DCC PWM waveform, you will need to do it DC. And the point is you are trying to find the stall current before fitting a decoder to see if the decoder can handle this amount of current. Link to comment Share on other sites More sharing options...
96RAF Posted January 7, 2018 Share Posted January 7, 2018 Couple more things about a DC stall test, you have to whip out the decoder and fit a blanking plug (if it has a socket, else temp revert the hard wiring) and your multi-meter needs to be capable of handling higher amps on DC. Many meters will blow an internal fuse above 200mA. See if your meter has a 10A DC range. You can do a very crude stall test using the R8249 as a psuedo multi-meter by holding the loco against movement but allowing the wheels to slip then giving it max chat, whilst slowly increasing pressure to stop the wheels until the decoder trips into overload. You know then your motor is pulling more that the decoder current rating. Doesnt do the decoder or traction tyres much good though, so only use as a last resort if you cant do a proper DC stall test. Rob Link to comment Share on other sites More sharing options...
Fozzy Bear Posted January 8, 2018 Share Posted January 8, 2018 The 8249 and the TTS decoder have the same rating so if it runs fine now, the TTS chip should have no problems either. Should be no need for any stall test or such. Link to comment Share on other sites More sharing options...
Lanc Posted January 10, 2018 Share Posted January 10, 2018 Hi, and thanks to you all for the help & advice, I think I’ll forgo the stall tests unless a decoder blows, if so I’ll test on dc before fitting a replacement. so thanks again! Link to comment Share on other sites More sharing options...
Fishmanoz Posted January 10, 2018 Share Posted January 10, 2018 As I said on page 1 and Fozzy echoed above, you’ll be fine Paul. Link to comment Share on other sites More sharing options...
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