steveb860 Posted October 9, 2023 Share Posted October 9, 2023 I have a Heljan 3441 33025 Sultan which I wish to install with DCC sound. This is the more recent upgraded body shell version. Previously I used a replacement battery box / fuel tank speaker enclosure from DC kits to house a speaker, but these appear to no longer be available, so my question is, what speaker have people used inside their 33's as space is very limited. I intend to fit a legoman sound decoder. Cheers, Steve. Link to post Share on other sites More sharing options...
KeithAnthony Posted October 9, 2023 Share Posted October 9, 2023 (edited) 8 minutes ago, steveb860 said: what speaker I bought decoder and 'extra base' speaker from Road and Rails. Sounds fine. Have a look on R&R website and under Class 33 you will see what is recommended. On a previous Class 33 I used the fuel tank for a speaker without any kit parts, just drilled some holes in bottom. That works fine too! Edited October 9, 2023 by KeithAnthony 1 1 Link to post Share on other sites More sharing options...
RMweb Gold Kaput Posted October 9, 2023 RMweb Gold Share Posted October 9, 2023 The 27mm round bass enhanced from Road & Rails is perfect. DC Kits sells what looks to be the same speaker under the name Mega Cube Round. 1 Link to post Share on other sites More sharing options...
charliepetty Posted October 9, 2023 Share Posted October 9, 2023 Yes we do, this speaker is not actually a 'Bass Reflex' thus our description. https://www.dckits-devideos.co.uk/index.php?route=product/product&path=223_75&product_id=383 I have just done a Class 27 and fitted it with 2 x Sugar Cube Speakers (The ones that come with ESU decoders) wired in Parallel and it sound quite good too, and as I had them sat about, they cost me nothing!!! Just remember to seal the housing kit which comes with them. 1 1 Link to post Share on other sites More sharing options...
Albie the plumber Posted October 9, 2023 Share Posted October 9, 2023 Probably in the minority here but I binned the circuit board , got an ESU 21 pin adapter board for the decoder and used the freed up space to fit an EM1 speaker under the fan grille . The chassis block needed cutting so it will put most people off . Sounds great though ! 1 Link to post Share on other sites More sharing options...
RMweb Gold Soul Survivor Posted October 12, 2023 RMweb Gold Share Posted October 12, 2023 I fitted a Digitrains ALZ 23x20x8 (8ohm) speaker in the fuel tank (facing upwards) and a YouChoos 18x13x7 (8ohm) speaker above the PCB - wired both in parallel. This produces a decent bass led engine sound without muffling sounds such as horns. The decoder is a Loksound V5 blown with Jamie Goodman’s excellent sound file. Roads & Rails has a video on YouTube of the Heljan Class 33 featuring this sound file - worth watching and comparing against the Legomanbiffo sound file. Link to post Share on other sites More sharing options...
Dutch-Traindriver Posted February 19 Share Posted February 19 Is there place for one Esu Sugar cube insite the Heljan 3388 (class 33) loco, or only into the fuel tank ? Link to post Share on other sites More sharing options...
RMweb Gold Soul Survivor Posted February 22 RMweb Gold Share Posted February 22 Yes, there is room to fit an ESU sugar cube inside the loco - but only built up to 7mm high. 1 Link to post Share on other sites More sharing options...
SRman Posted February 22 Share Posted February 22 (edited) 8 hours ago, Soul Survivor said: Yes, there is room to fit an ESU sugar cube inside the loco - but only built up to 7mm high. From way back when the current ESU LokSound version was the 3.5, and needed 100 ohm speakers, I was fitting two 25mm round speakers in a Heljan class 33: one in the loco body, with a severely cut-down sound chamber, angled down towards the bogie tower, and one in the fuel tanks with holes drilled in to let the sound out (as also mentioned by Keith). The sound chambers were sealed properly, and the volume reduced to compensate for having them in parallel, but this was still more than loud enough, and the two slightly differing sound chambers contributed to the depth and richness of the sound. Of course, with LokSound 4 and 5 decoders, or Zimo for that matter, there are many more suitable speakers available in the 4 and 8 ohm range, including the sugar cubes mentioned by Charlie. You could also look at the range of speakers available from Roads and Rails, with several variations on bass enhanced types and also some iPhone and tablet speakers for tight locations. That's not to mention the better (and improved) sound quality from the current decoders and from the suppliers of the sound projects. Edited February 22 by SRman 1 Link to post Share on other sites More sharing options...
DevilsAdvocate Posted March 31 Share Posted March 31 (edited) Yep A 20mm x 20mm sugar cube speaker from Roads n Rails does the trick I have two Class 33’s with them fitted and they sound great Besides that, room is very limited under the shell and i would be surprised if you could get anything any bigger under there anyhow, it’s tight, but do able with the above Edited March 31 by DevilsAdvocate Link to post Share on other sites More sharing options...
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