Very impressive Steve. Came over well on my Hi Fi PC speakers. F9, Cold Start, reminded me of my youth, trying to start my old banger car in the winter when already late for work. 😂 Thanks for the enjoyable video. Best, Jason.
Yes, there used to be a Austin Montego diesel next to me that sounded the same in the mornings!🤣😂 I need to find a large tender loco to get the same speakers into for steam sounds maybe a 9F?? Cheers Steve
Hi Mark, Thanks for the comment. The speakers resistance is measured in ohms. If you wire two in series, example 4+4 = 8 ohms. If you wire two in parallel it halves the impendence (resistance) i.e. 4+4 = 2 ohms, not good!! I can't attach photos here but if you "google wiring speakers series and parallel" there are plenty of diagrams. So we are aiming for no lower than 8ohms with Hornby sound decoders. The only other thing which is less critical is to try and get the two speakers in phase. Often they are not marked -/+ but when wiring in series you want the the speakers to keep in phase; i.e. both go in and out together. If you notice there is no bass when connected up just reverse the solder joints on one speaker and this should cure it. Once again google "phase of speakers" will help, just the same principles as your home hi-fi. Make sure you insulate all connections before testing as any short circuit can cause damage to the decoder. If not sure, drop us another line. Hope this helps. Regards Steve
@@tynedock Thanks Steve. This is our first foray into DCC. I've ordered the class 50 in the Hornby sale and the HM7000 21 pin decoder which comes with a little speaker which won't be very good I'm sure. I will probably modify an old scalextric 12V DC 4A supply to power the track (I think it's DC for HM7000). I get the phase thing being into my hi fi but it hadn't occurred to me that that would also apply to the loco speakers so that's really useful - thanks. I hope there is room in the 50 for a couple of speakers but I'll soon find out. Yes, I'll google the wiring; it's coming back to me now though.
Hi Mark, Not sure on the internals of a new class 50, not one I have had. On the power supply; the TXS decoders can be fussy on the power supply. Some power supplies use pulse width modulation (PWM) and the frequency of this has been know to cause an issue with chips. Hornby have published a lists of known compatible/ incompatible, power supplies on their website. Worth double checking:- uk.hornby.com/hm7000/hm-dcc-guides. Regards Steve
Hi Steve, did you have to modify the body or interior to fit the accurathrash speaker, I want to add sound to my Hornby 56 but have read in Hornby magazine issue 192 that there is no room for a speaker and that the fan assembly has to be removed. On your video the fans are still in place. Regards Steve Canning.
Hi Steve, There are some options on fitting the speakers in the Class 56 and it depends on the chassis and circuit board fitted. The one in the video was a sound fitted chassis that I picked up off eBay cheap as the 21pin sound decoder had been removed along with the original speaker. This received no modification, just fitted a 21 pin TXS chip and the two speakers wired in series (important due to the speaker impendence) as you see in the video. The older 8 pin chassis has a larger circuit board and a bit more metal. I have just popped the top of a 8 pin version and there are a couple of ways I would approach it. 1) Where the fan drive unit is (BLUE arrow on left in video) remove the plastic and fit a Rail Exclusive baby boomer 8ohm or similar. The rest of the FAN unit could stay in situ. 2) remove the Hornby circuit board and fit a 21pin circuit board adapter e.g. www.ebay.co.uk/itm/204069169603. This will also need some small resistors adding to the lighting circuit so a bit more involved. Hope this helps let us know.... if I get chance I may be able to do a video. Unfortunately just had a few months off due to an operation which affected my sight. Seem to be almost back to normal now. Regards Steve
Hi the Accurascale is 4ohm and the sugar cube 8ohm both wired in series to give 12 ohm. Sound level is at 50% for the test. Did have a phase issue initially, but just swapped polarity on one speaker.. I have an idea to use 2xsugar cubes in parallel to give 4ohms then add in series with the Accurascale speaker to give an 8ohm load overall? 8ohm minimum load required by decoder amplifier. Regards Steve
@@funkyx486 Hi, Thanks for the idea, haven't tried that, will try it out. I will have to make sure, to keep it to not less than 8ohm load on the decoder. Cheers
Hi Steve can you help i also have a class 56 with the txs chip all ok on the HM phone app phone but what do I do get it on my prodigy dcc controller it still showing number three as the default code yet has the correct running code on the HM app controller i must be doing something wrong. regards.
Hi I have used the programming track on the Prodigy to program the address on DCC like an ordinary dcc chip. You can set acceleration etc inc; sound levels. I think the running number for the app and dcc mode can be different. Let me check and I will come back to you. Regards Steve
Hi I have checked and the app is set at id 56. In DCC mode I used the prodigy to program the address to 6127 and it now responds to 6127 under dcc mode and the when you change back to Bluetooth mode it appears to stay as 56. So it now has two ids one for Bluetooth app and one for DCC mode. Hope this helps regards Steve
@@tynedock thank you Steve. Should I have programmed the loco first with the prodigy before the app one or can i now program the prodigy. regards PS I'm rather new to all this.
Hi Tony, Probably once it is set up on the bluetooth app, then switch to DCC and program the DCC address. They are new to market chips I think we are all learning and the software is still evolving from the Hornby side. I will have a play with the next blank one I buy. Cheers Steve
Very impressive Steve. Came over well on my Hi Fi PC speakers. F9, Cold Start, reminded me of my youth, trying to start my old banger car in the winter when already late for work. 😂
Thanks for the enjoyable video. Best, Jason.
Yes, there used to be a Austin Montego diesel next to me that sounded the same in the mornings!🤣😂 I need to find a large tender loco to get the same speakers into for steam sounds maybe a 9F?? Cheers Steve
@@tynedock 54B + 54D = 9F
Thanks very much for that very informative video. I just need to learn a bit more about wiring the speakers and remind myself of the resistance rules.
Hi Mark, Thanks for the comment. The speakers resistance is measured in ohms. If you wire two in series, example 4+4 = 8 ohms. If you wire two in parallel it halves the impendence (resistance) i.e. 4+4 = 2 ohms, not good!! I can't attach photos here but if you "google wiring speakers series and parallel" there are plenty of diagrams. So we are aiming for no lower than 8ohms with Hornby sound decoders. The only other thing which is less critical is to try and get the two speakers in phase. Often they are not marked -/+ but when wiring in series you want the the speakers to keep in phase; i.e. both go in and out together. If you notice there is no bass when connected up just reverse the solder joints on one speaker and this should cure it. Once again google "phase of speakers" will help, just the same principles as your home hi-fi. Make sure you insulate all connections before testing as any short circuit can cause damage to the decoder. If not sure, drop us another line. Hope this helps. Regards Steve
@@tynedock Thanks Steve. This is our first foray into DCC. I've ordered the class 50 in the Hornby sale and the HM7000 21 pin decoder which comes with a little speaker which won't be very good I'm sure. I will probably modify an old scalextric 12V DC 4A supply to power the track (I think it's DC for HM7000). I get the phase thing being into my hi fi but it hadn't occurred to me that that would also apply to the loco speakers so that's really useful - thanks. I hope there is room in the 50 for a couple of speakers but I'll soon find out. Yes, I'll google the wiring; it's coming back to me now though.
Hi Mark, Not sure on the internals of a new class 50, not one I have had. On the power supply; the TXS decoders can be fussy on the power supply. Some power supplies use pulse width modulation (PWM) and the frequency of this has been know to cause an issue with chips. Hornby have published a lists of known compatible/ incompatible, power supplies on their website. Worth double checking:- uk.hornby.com/hm7000/hm-dcc-guides. Regards Steve
Wow fantastic Steve, good watch
Glad you enjoyed it
Hi Steve, did you have to modify the body or interior to fit the accurathrash speaker, I want to add sound to my Hornby 56 but have read in Hornby magazine issue 192 that there is no room for a speaker and that the fan assembly has to be removed. On your video the fans are still in place.
Regards Steve Canning.
Hi Steve, There are some options on fitting the speakers in the Class 56 and it depends on the chassis and circuit board fitted. The one in the video was a sound fitted chassis that I picked up off eBay cheap as the 21pin sound decoder had been removed along with the original speaker. This received no modification, just fitted a 21 pin TXS chip and the two speakers wired in series (important due to the speaker impendence) as you see in the video. The older 8 pin chassis has a larger circuit board and a bit more metal. I have just popped the top of a 8 pin version and there are a couple of ways I would approach it. 1) Where the fan drive unit is (BLUE arrow on left in video) remove the plastic and fit a Rail Exclusive baby boomer 8ohm or similar. The rest of the FAN unit could stay in situ. 2) remove the Hornby circuit board and fit a 21pin circuit board adapter e.g. www.ebay.co.uk/itm/204069169603. This will also need some small resistors adding to the lighting circuit so a bit more involved. Hope this helps let us know.... if I get chance I may be able to do a video. Unfortunately just had a few months off due to an operation which affected my sight. Seem to be almost back to normal now. Regards Steve
Sounds like a worthwhile modification. Are both speakers 4 ohm, and wired in series?
Hi the Accurascale is 4ohm and the sugar cube 8ohm both wired in series to give 12 ohm. Sound level is at 50% for the test. Did have a phase issue initially, but just swapped polarity on one speaker.. I have an idea to use 2xsugar cubes in parallel to give 4ohms then add in series with the Accurascale speaker to give an 8ohm load overall? 8ohm minimum load required by decoder amplifier. Regards Steve
Hiya, have you tried iPhone speaker and sugar cube?
@@funkyx486 Hi, Thanks for the idea, haven't tried that, will try it out. I will have to make sure, to keep it to not less than 8ohm load on the decoder. Cheers
Hi Steve can you help i also have a class 56 with the txs chip all ok on the HM phone app phone but what do I do get it on my prodigy dcc controller it still showing number three as the default code yet has the correct running code on the HM app controller i must be doing something wrong. regards.
Hi I have used the programming track on the Prodigy to program the address on DCC like an ordinary dcc chip. You can set acceleration etc inc; sound levels. I think the running number for the app and dcc mode can be different. Let me check and I will come back to you. Regards Steve
Hi I have checked and the app is set at id 56. In DCC mode I used the prodigy to program the address to 6127 and it now responds to 6127 under dcc mode and the when you change back to Bluetooth mode it appears to stay as 56. So it now has two ids one for Bluetooth app and one for DCC mode. Hope this helps regards Steve
@@tynedock thank you Steve. Should I have programmed the loco first with the prodigy before the app one or can i now program the prodigy. regards PS I'm rather new to all this.
Hi Tony, Probably once it is set up on the bluetooth app, then switch to DCC and program the DCC address. They are new to market chips I think we are all learning and the software is still evolving from the Hornby side. I will have a play with the next blank one I buy. Cheers Steve
@@tynedock Hi Steve thank you so much for your very much appreciated help .