37023 Posted October 13, 2009 Share Posted October 13, 2009 Just wondering! Has anyone tried usuing a mobile phone speaker? i am sound chipping my 00 gauge 08 but the ngauge speaker is extreamly quiet! so i am wondering would it be possible to use a mobile phone speaker? anyone have any ideas? chris Link to post Share on other sites More sharing options...
Piemanlarger Posted October 13, 2009 Share Posted October 13, 2009 I fitted a 23 ml round speaker (and box) in the cab, this was surprisingly loud. I also had another speaker behind the rad. That i dont think added anythingapart from being a tight fit! Link to post Share on other sites More sharing options...
adge-peanuts Posted October 13, 2009 Share Posted October 13, 2009 I Have fitted the Speaker that came with the sound chip. I removed the complete radiator fans that are behind the grill. I Aint found its to quiet. It comperes with the sound levels from the others. I slit the sides from the back box and managed to get it to slide within the Space between the fixings on the Hornby 08. Link to post Share on other sites More sharing options...
Etched Pixels Posted October 13, 2009 Share Posted October 13, 2009 Just wondering! Has anyone tried usuing a mobile phone speaker? i am sound chipping my 00 gauge 08 but the ngauge speaker is extreamly quiet! so i am wondering would it be possible to use a mobile phone speaker? anyone have any ideas? chris It depends a lot on the decoder in use as well as the sound. The CT SL75 with the supplied speaker is *loud* and the speaker is tiny. It's even louder if you superglue it to the chassis block or body to give it a bit more mass. That looks to me very much like a mobile phone speaker ? First question however would be what you are using for a speaker enclosure and how you have the speaker fitted. The Loksound micro can be very very inadequate with a small speaker unless you've got a good non leaky enclosure. Beyond that there are some good cheats if you are able to edit the recordings - one when using small speakers is to filter out the really low frequencies (which the speaker can't do anyway) and then bump the volume of the rest so you get the energy in the areas that can be output. Link to post Share on other sites More sharing options...
Pugsley Posted October 14, 2009 Share Posted October 14, 2009 Just wondering! Has anyone tried usuing a mobile phone speaker? The only thing to watch, especially if you're using a Loksound decoder, that the impedance of the speaker is suitable - otherwise you could destroy the amplifier on the chip. A 100 ohm impedance speaker is required for Loksound chips. HTH Link to post Share on other sites More sharing options...
Lady_Ava_Hay Posted October 14, 2009 Share Posted October 14, 2009 The CT SL75 with the supplied speaker is *loud* and the speaker is tiny. I was told by Arnold Huebsch that this speaker was actually used for the purposes of mobile phones and that to get them at a sensible price, thousands have to be bought. The only thing to watch, especially if you're using a Loksound decoder, that the impedance of the speaker is suitable - otherwise you could destroy the amplifier on the chip. A 100 ohm impedance speaker is required for Loksound chips.HTH Agreed but one can run down to 50 ohms as long as the power rating is adequate. In general, most sound chips will operate successfully and louder at half the rated ohmage as long as that power rating is watched. Obviously, chip life is less certain which is probably the reason that Loksound uses 100 ohms. CT uses 8 ohms on the SL74 but 32 ohms on the GE70 and SL54. Digitrax swapped from 32 ohms to 8 ohms on the SFX0416 and SFX004 due to universal complaints about volume. It is relatively easy to source high quality small speakers in 32 and 8 ohms. 50 doesn't exist except as one half of the double 15mm Loksound speakers and 100 ohms is unique to them. I am actually not sure whether this is a ploy to make you buy their speakers but they are available in a variety of sizes and all with the essential ingredient of an enclosure. Note that the Loksound XL runs 32 ohm speakers which are not supplied as standard. Link to post Share on other sites More sharing options...
Etched Pixels Posted October 14, 2009 Share Posted October 14, 2009 CT uses 8 ohms on the SL74 but 32 ohms on the GE70 and SL54. Digitrax swapped from 32 ohms to 8 ohms on the SFX0416 and SFX004 due to universal complaints about volume. The Digitrax SFX004 is supplied with a 32Ohm speaker and runs best with it - the SFX0416 also seems happier at 16-25Ohms than 8, so I'm not sure they switched to 8Ohms or made them 8Ohm tolerant or what. The CT speaker is no longer the smallest available btw - there is a Soundtraxx 10mm speaker (3/8inch) and housing that is a fraction smaller, but more usefully a different shape - just under 11mm round in the optional matching enclosure piece but slightly deeper. Link to post Share on other sites More sharing options...
RMweb Premium newbryford Posted October 14, 2009 RMweb Premium Share Posted October 14, 2009 Just wondering! Has anyone tried usuing a mobile phone speaker? i am sound chipping my 00 gauge 08 but the ngauge speaker is extreamly quiet! so i am wondering would it be possible to use a mobile phone speaker? anyone have any ideas? chris Remember that 08's aren't loud in the first place. I presume by "N gauge" speaker, you're referring to a Loksound Micro and small rectangular speaker. If that's the case, then the reason it's quiet, is that there is no enclosure around the back of the speaker. I've used a standard Loksound 3.5 and fitted a 23mm round, with enclosure into the cab. Cheers, Mick Link to post Share on other sites More sharing options...
Lady_Ava_Hay Posted October 14, 2009 Share Posted October 14, 2009 there is a Soundtraxx 10mm speaker (3/8inch) and housing that is a fraction smaller, but more usefully a different shape - just under 11mm round in the optional matching enclosure piece but slightly deeper. What is the ohmage of that one and is it available separately? Link to post Share on other sites More sharing options...
Lady_Ava_Hay Posted October 14, 2009 Share Posted October 14, 2009 then the reason it's quiet, is that there is no enclosure around the back of the speaker. The usual symptom of 'no enclosure' is more likely to a loud hissing with no definition so an 08 would sound more like a steam engine. Link to post Share on other sites More sharing options...
Etched Pixels Posted October 15, 2009 Share Posted October 15, 2009 What is the ohmage of that one and is it available separately? 8 and yes. http://www.dccsupplies.com/shop/index.php?cPath=24_157_215 The 10mm baffle kit will take one speaker as a single ended chamber or can take a pair of speakers one each end of the chamber. Link to post Share on other sites More sharing options...
Etched Pixels Posted October 27, 2009 Share Posted October 27, 2009 8 and yes. http://www.dccsuppli...Path=24_157_215 The 10mm baffle kit will take one speaker as a single ended chamber or can take a pair of speakers one each end of the chamber. I've been playing with these speakers a bit more as I needed something truely tiny to stuff into my N gauge Worsley Works 41 which was very short on room, in part because I weighted the ends with milliput and stuff before I discovered sound. On the plus side the reproduction quality is nice - a lot cleaner than the CT default speaker. It's quieter unsurprisingly. Bass reproduction is not great but that I suspect is partly due to the lack of a good chamber as the loco is so short of room. It looks like it may also be valuable for some tender powered steam locos where the smokebox is big enough to bore a chamber down the weights in the loco body. I don't currently feel up to sticking a Union Mills T9 into a vertical drilling machine to investigate in depth however. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.