DCC Sound Fitting Guides

Find our recommended speaker for the most popular models below. Where possible we also provide a link to a fitting guide. This page will constantly evolve, if a new model is released we'll add it, and if a new better speaker is released we will update our recommendation.

To keep things simple. We recommend speakers which most people will be able to fit themselves at home, no major or irreversible work is required, but you may need to make minor alterations, such as unscrewing fans, this will be listed under the notes column if relevant.

To help you understand the different types of speaker we sell, we have a guide here.

And to help you understand the different ways to wire them up we have a guide here.

Bachmann

Class	Speaker	Notes	Fitting Guide
03 Shunter (Next 18 version)	15x11 speaker with gasket	Sticks to built in enclosure	https://youtu.be/1jAUBj_MG6c
03 shunter (6 Pin version)	14x10x4 Nano megabass	Behind the front grill
08 Shunter (8 pin version)	Sugarcube speaker	If you remove the 8 pin socket you can use a larger speaker	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-and-stay-alive-to-the-bachmann-08
Class 20 (Plux22 version)	20x20x7 megabass	Remove built in speaker first	https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-20-sound-install-and-speaker-upgrade
Class 20 (21 pin version)	35x16x6 Tablet speaker		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-21-or-8-pin-bachmann-class-20
Class 20 (8 pin version)	26x14x7mm bass enhanced	Fit vertically behind the nose	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-21-or-8-pin-bachmann-class-20
Class 24 (All versions)	20x20x7mm megabass		https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-24-sound-fitting-guide
Class 25(All Versions)	20x20x7mm megabass	In plux22 models withiut a working fan you can also add a 23x12x7 speaker.	https://youtu.be/ksbE5qmVmNA?si=A7eGdYUvPjvWU2fq
Class 37 (8 or 21 pin version)	20x20x7mm megabass	A pair also fits the 21 pin version and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/bachmann-37-21-pin-version-speaker-upgrade
Class 37 (8 or 21 pin version) EM1 installation	EM1 speaker	This is a harder install but well worth the effort!	https://youtu.be/pcSMTmLyHAk
Class 37 (plux22 version)	Use built in speaker, or replace with a 20x15x7 and an 18x13x7 speaker	The factory fitted speakers crackle at higher volumes	https://youtu.be/hrCBUJ_4Bcs
Class 40	27mm round bass enhanced	A pair also fits and sounds louder
Class 40 (plux22 version)	27mm round bass enhanced	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/new-bachmann-class-40-sound-fitting-guide
Class 43 Warship	25x25x7mm megabass	Remove fan holder
Class 44	20x20x7mm megabass
Class 45	20x20x7mm megabass
Class 46	20x20x7mm megabass
Class 47 (8 or 21 pin)	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-47-and-57-sound-fitting-guide
47 (plux22 version)	Use built in speaker or cut an EM1 in half and replace the round speaker with it	If using the EM1 the cut down end must be re sealed with plasticard or similar.	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-latest-bachmann-class-47
Class 55 (Deltic)	20x20x7mm megabass
DP1 (Deltic)	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-bachmann-dp1
Class 57	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-47-and-57-sound-fitting-guide
Class 66 (Plux22 version)	46x25x7 Tablet speaker		https://youtu.be/048NuLJk5Ao?si=RtMr10Ewlzy29Xll
Class 66 (8 or 21 pin version)	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-66-sound-fitting-guide
Class 70	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/bachmann-class-70-body-removal
Class 85	35x24x3mm bass enhanced
Class 101	30x17x4mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/bachmann-101-sound-fitting-guide
Class 105	26x14x7mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/bachmann-105-cravens-sound-fitting
Class 117	Use built in speakers or a 20x15x7 megabass in each end	Speakers connect through the couplings	https://youtu.be/cdpwbPbEUDA
158, 159 or 166 DMU. Non DCC ready versions.	40x20x7 Tablet speaker	Quite a complex job, not recommended for beginners.	https://youtu.be/UGi5lscWiCw?si=5FWg2ovoNZFViM3v
Class 158 (plux22)	Use built in speakers or a pair of 20x15x7 megabass	Use a speaker in each coach, the coupling connects the second speaker	https://www.roads-and-rails.co.uk/blogs/news/upgrading-the-bachmann-158-speaker
Class 205 Thumper	20x20x7mm megabass		https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-bachmann-205
MLV	20x20x7mm megabass		https://www.roads-and-rails.co.uk/blogs/news/sound-for-the-bachmann-mlv
MPV	20x20x7mm megabass	A pair also fits and sounds louder	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-bachmann-mpv

Hornby

Class	Speaker	Notes	Fitting Guide
08	26x14x7mm bass enhanced	Fit vertically behind the grill
31	26x14x7mm bass enhanced	Fits in front of the fan
43 (HST)	27x27x13mm megabass	Fit to the back of the body shell, stick to the roof facing down	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-hornby-hst
50	25x25x7mm megabass	Fits at the non fan end	https://www.roads-and-rails.co.uk/blogs/news/hornby-class-50-sound-fitting
56	27mm round bass enhanced	Fits at the non fan end
60	25x25x7mm megabass	A thinner speaker is needed for early models
67	20x20x7mm megabss	Fits over the drive shaft, or you can use two in the tanks if you can solder	https://www.roads-and-rails.co.uk/blogs/news/hornby-class-67-with-two-megabass-speakers
73	25x25x7mm megabass
87	22x13x5mm bass enhanced	Fits under the pcb, over the drive shaft	https://www.roads-and-rails.co.uk/blogs/news/hornby-class-87-sound-fitting-guide
91	22x13x5mm bass enhanced	Fits above either bogie, you can also use two	https://www.roads-and-rails.co.uk/blogs/news/hornby-class-91-sound-fitting
92	25x25x7mm megabass
800	22x13x5mm bass enhanced	Fits in the same space as the decoder
BR 9F	15x11mm sugarcube	Fits the built in enclosure	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-new-hornby-9f
GWR 28XX	27mm round bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/hornby-28xx-sound-install
LNER W1 Hush Hush	27mm round bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-hornby-hush-hush
LNER A3 (Dublo Version)	20x20x7mm megabss		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-hornby-dublo-flying-scotsman
LMS Princess	5x24x3mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/hornby-princess-sound-fitting
SR West Country	35x24x3mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-hornby-queen-elizabeth-ii

Heljan

Class	Speaker	Notes	Fitting Guide
11	20x11x4mm	You can use the built in speaker instead	Heljan Class 11 Sound And Stay Alive Fitting \| Roads And Rails
14	26x14x7mm bass enhanced	Speaker fits in the cab or requires milling	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-heljan-class-14
15	26x14x7mm bass enhanced
16	26x14x7mm bass enhanced
25	25x25x7mm megabass		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-heljan-class-25
26	27mm round bass enhanced
27	27mm round bass enhanced
33	27mm round bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/27mm-round-bass-enhanced-speaker-in-the-heljan-class-33
35	26x14x7mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/heljan-efe-class-35-hymek-sound
45	25x25x7mm megabass	The EM1 speaker can also be fitted with a small modification	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-new-heljan-class-45
47	25x25x7mm megabass	Fits over the bogie
52	25x25x7mm megabass	Fits over the bogie
58	26x14x7mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/heljan-efe-class-58-sound-fitting
86	25x25x7mm megabass		https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-heljan-class-86
128	26x14x7mm bass enhanced	Fits behind the cab
ES1	15x11mm sugarcube	Use our speaker with the built in enclosure	https://www.roads-and-rails.co.uk/blogs/news/es1-sound-fitting-guide
Railbus	26x14x7mm bass enhanced		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-a-heljan-railbus
PWM Shunter	15x11mm sugarcube	Soldering required	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-heljan-pwm-shunter

Dapol

Class	Speaker	Notes	Fitting Guide
21	25x25x7mm megabass
22	25x25x7mm megabass
29	25x25x7mm megabass
41	25x25x7mm megabass
52	25x25x7mm megabass
59	25x25x7mm megabass	An EM1 speaker also fits and is a direct fit, which gives more bass	https://www.roads-and-rails.co.uk/blogs/news/dapol-class-59-sound-fitting
68	25x25x7mm megabass	An EM1 speaker also fits and is a direct fit, which gives more bass
61XX	15x11mm sugarcube		https://www.roads-and-rails.co.uk/blogs/news/dapol-large-prairie-dcc-sound-fitting
GWR Manor	15x11mm sugarcube and 20x40mm bass enhanced	Soldering required for tender speaker	https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-dapol-manor

EFE Rail

Class	Speaker	Notes	Fitting Guide
Class 58	20x20x7mm megabass	You can also use a pair of speakers.	https://www.roads-and-rails.co.uk/blogs/news/heljan-efe-class-58-sound-fitting
143/144 DMU	26x11x4		https://www.roads-and-rails.co.uk/blogs/news/sound-fitting-the-efe-143-144-pacer

Accurascale

Class	Speaker	Notes	Fitting Guide
MK5 DT	22x13x5mm bass enhanced	Model has built in speaker, you can add a 22x13x5 for better sound	https://www.roads-and-rails.co.uk/blogs/news/fitting-sound-to-the-accurascale-mk5-dt
55 Deltic	25x25x7mm megabass or EM1	If using the EM1 the model can vibrate, see our guide on how to stop this

Vitrains

Class	Speaker	Notes	Fitting Guide
37	25x25x7mm megabass	Fits over the bogie
47	25x25x7mm megabass	Fits over the bogie

Gallery

This is a guide only, we recommend measuring the space available before choosing a speaker. Also make sure the recommended speaker is suitable for your sound decoder. Our recommended speakers are all suitable for Loksound 4, 5 and most Zimo sound decoders.

You can contact us with any questions or use the live chat at the bottom of the page.