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Re: [on3] Sound module - now SMD LEDs

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  • Ken Ruble
    Howdy, this is all very helpful information. I actually watched another video by someone else that popped up after yours stopped playing that showed how to do
    Message 1 of 12 , Aug 22, 2013
      Howdy, this is all very helpful information. I actually watched another video by someone else that popped up after yours stopped playing that showed how to do some of this stuff. I will have to round up some 36 ga. wire and a temperature control soldering iron. Everything I have now is for soldering brass.
      Thanks partner, adios,
      Sent: Thursday, August 22, 2013 1:35 AM
      Subject: Re: [on3] Sound module - now SMD LEDs

      G'Day again Ken,

      OK, you have my book on SMD LED lighting so I know where you are up to.

      The Richmond Controls chip size 0603 LEDs have 0.004" magnet wire and the enamel insulation can get scratched and cause a short.

      I use a lot of 0401, 0402 and 0603 SMD LEDs and mostly solder my own leads onto the LEDs.
      There are several videos on my YT channel showing how I solder the leads.
      Recently I have started using teflon coated 36 gauge wire from HobbyKing.
      Last year I bought 50 metres for $0.19 / Mr but I see they have increased the price but still cheap.
      I strip the teflon insulation to reveal several small metal wires and apply Carr's orange (non acid) liquid flux and tin the ends.
      The ends are trimmed to the WIDTH of the tiny solder pad on the surface mount LED.
      I hold the SMD in a pair of self locking tweezers and very quickly solder the lead onto the solder pad of the SMD LED.
      If it will help I can take another video of how I do the above using the teflon 36 gauge wire - just let me know if it will help you.
      Gary Paulino at TrainTekLLC sells warm white 0603 SMD LEDs - I gave him the source I get mine from in China - Gary is in the USA.
      Ngineering sell magnet wire and I think they also sell SMD LEDs. They also sell SMD resistors but I don't think you need these.
      I've been using SMD LEDs for over 5 years now and never had one fail.
      For DCC I use a 1500 Ohm resistor for a bright light, 2700 Ohm for loco lights, 4300 Ohm for interior lights and firebox flicker and 10000 Ohm for hand lanterns.
      If you want to obtain SMD LEDs the LEDBaron sells lots on Ebay -
      Let me know if I can be of further assistance ?

      From: Ken Ruble <kenruble@...>
      To: on3@yahoogroups.com
      Sent: Thursday, 22 August 2013 12:32 PM
      Subject: Re: [on3] Sound module

      Howdy again. I am glad you liked my salutation. I will definitely look into these speakers but it will have to wait for a while as I am experimenting with LEDs right now, attempting to light a freight station. I used one of your books on the subject and was able to grasp the concepts very quickly. The only thing that troubles me are the leads. I have lighted a Mackenzie Iron and Steel Nash Quad using the Richmond Controls type you recommended but the leads show under the truck and I don’t want to wrap all the wires together to make them easier to hide as I have already had shorting problems. Can you recommend another type or brand. Someone gave me some LED bulbs with shorter, stiff leads from a company called Mouser but I don’t have a part# and Mouser has 479 pages of LED bulbs alone on their web site and I am stuck.
      adios for now,
      Sent: Wednesday, August 21, 2013 4:40 PM
      Subject: Re: [on3] Sound module
      G'Day Ken,

      These tiny cell phone speakers are as good as the smaller conventional speakers which are much larger in physical size.
      The first thing I noticed was that they vibrate and if they are in contact with the loco body the body also becomes part of the speaker.
      The correct terminology to describe these tiny speakers is "dynamic transducer" and they are 8 Ohms soideal for DCC sound decoders.
      I was involved with Beta testing the new Train Control Systems (TCS) steam WOW Sound decoders and I have tested these cell speakers with a WOW with excellent results.
      The WOW decoder has a micro SD card onboard along with 5 super capacitors for "Keep-Alive" power. The sounds are recorded from actual locos and placed onto the SD card being true CD quality sounds.
      Comparing the Soundtraxx Tsunami sounds to the TCS WOW sounds it is very evident the WOW produces higher crispness and clarity over the Tsunami sounds.
      The testing I have done using the cell speakers in both Tsunami's and WOW Sound decoders proves these tiny speakers really do work very well and you don't need to have the volume levels any higher.
      The trick is to make sure these cell speakers have an enclosure and then you have a choice of how to mount them.
      Mounting can be either in contact with the loco body or sitting on double sided foam tape to make a resilient mount.
      The Isobaric configuration really works best with larger speakers, say from 1 inch or larger and as they are both working in unison the space between them is neutral regarding air pressure. The rear speaker cone moves forward and so does the front speaker cone at the same time and likewise in reverse so they are both working together and more air is being pushed which is the medium sound waves pass through to get to our ears to hear.
      Mate, please purchase one of these cell speakers and for the small cost (about $7) it will be well worth you experiencing how good they are.
      BTW - liked the "Howdy Partner" (grin)

      From: Ken Ruble <kenruble@...>
      To: on3@yahoogroups.com
      Sent: Thursday, 22 August 2013 9:14 AM
      Subject: Re: [on3] Sound module

      Howdy Partner,
      I viewed your video with great interest, then went to Wikipedia to learn what isobaric meant. I have a Grandt 18 ton Porter which has been under construction for about 10 years and was recently stalled again because of dissatisfaction with available speakers. This may solve the problem but I am wondering about the quality of sound with such a small speaker. Does the isobaric arrangement duplicate the effect of a larger one? Could I use the tank shell to amplify the sound or enhance the bass?
      near Sacramento,
      Sent: Tuesday, August 20, 2013 8:48 PM
      Subject: Re: [on3] Sound module
      G'Day Ken,

      You might not know about the small flat speakers that are used in tablets and cell phones but these are excellent and I have been using them with success.

      Here is a link to TVW Miniatures in the USA who sell them for around $7 each - I have tested all of these plus Zimo and CT sugar cube speakers -

      You can add more speakers and make an "array".
      Here is a video I took showing them on my sound sample panel -
      I make my own enclosures for these cell / tablet speakers using 60 thow thick styrene sheet.
      Laurie McLean MMR
      Austra! lia

      From: Ken Ruble <kenruble@...>
      To: on3@yahoogroups.com
      Sent: Wednesday, 21 August 2013 12:58 PM
      Subject: Re: [on3] Sound module

      What is a flat speaker? Maybe I could use one of these.
      Sent: Tuesday, August 20, 2013 7:48 PM
      Subject: [on3] Sound module
      Hi Guys,
      I'm looking to put a DCC/sound module into my Car Works 18 ton Plymouth. I figure a flat speaker in the cab roof. Any suggestion as to who's would have the best sound for such an engine.

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