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Offline jonas_sthlm  
#1 Posted : 21 November 2025 15:16:34(UTC)
jonas_sthlm

Sweden   
Joined: 12/10/2008(UTC)
Posts: 1,036
Location: Stockholm, Södermalm
Anyone with experience with ESU 50327 16mm 8ohm 0,8W speakers?

I am running an older Swedish T44 diesel model (SDS engine) with them, and I notice some crackling sounds especially in the engine function.

On the later T44, M they have decided to redesign the speaker installation, using a 15 mm unit E184136.

In the newer version, the speakers are connected in series using fairly thick cables.

UserPostedImage
I think the new idea of letting the speakers hang glued in place will come apart over time.

I will use E184136 after modifying it to fit the 16 mm speaker box and reversing its orientation.
UserPostedImage

Could there be an issue with the ESU speakers, or might the decoder’s sound project be poorly loaded, even if it’s a standard M file Confused
Collecting Swedish items since the 80s / CS3+ / MSW / 60175 Booster / 60881 S88 AC / TC10 Gold / K, C-Tracks / Favorites Class Ra / modelltag.se - Forum modelltag.se - Facebook modelltag.se - YouTube
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Offline marklinist5999  
#2 Posted : 21 November 2025 16:09:29(UTC)
marklinist5999

United States   
Joined: 10/02/2021(UTC)
Posts: 4,069
Location: Michigan, Troy
Either the speaker itself, or too little or too much voltage to it. I test audio tweeters with a multimeter set for ohms. If they read 1 to 10, still ok.
Offline jonas_sthlm  
#3 Posted : 21 November 2025 16:24:51(UTC)
jonas_sthlm

Sweden   
Joined: 12/10/2008(UTC)
Posts: 1,036
Location: Stockholm, Södermalm
I noticed that ESU has removed this speaker from the LokSound 4 and 5 product pages.
Collecting Swedish items since the 80s / CS3+ / MSW / 60175 Booster / 60881 S88 AC / TC10 Gold / K, C-Tracks / Favorites Class Ra / modelltag.se - Forum modelltag.se - Facebook modelltag.se - YouTube
thanks 1 user liked this useful post by jonas_sthlm
Offline bph  
#4 Posted : 22 November 2025 17:46:34(UTC)
bph

Norway   
Joined: 04/08/2018(UTC)
Posts: 1,238
Could it be because of low audio frequencies? Perhaps a combination of an old speaker/damaged? and low frequencies?

Have you tried to enable the wqualiser high-pass filter and test some frequencies?

What decoder project did you use? Or did you use the generic T44 sound in the sound library?
Offline jonas_sthlm  
#5 Posted : 22 November 2025 17:57:35(UTC)
jonas_sthlm

Sweden   
Joined: 12/10/2008(UTC)
Posts: 1,036
Location: Stockholm, Södermalm
I am using latest FW and project from 37945.

Have not try wqualiser high-pass filter.

Should try a few more things later, but I hope it’s something with mDT3 that damaged the project files.
Collecting Swedish items since the 80s / CS3+ / MSW / 60175 Booster / 60881 S88 AC / TC10 Gold / K, C-Tracks / Favorites Class Ra / modelltag.se - Forum modelltag.se - Facebook modelltag.se - YouTube
Offline bph  
#6 Posted : 22 November 2025 18:19:06(UTC)
bph

Norway   
Joined: 04/08/2018(UTC)
Posts: 1,238
Originally Posted by: jonas_sthlm Go to Quoted Post
I am using latest FW and project from 37945.


If you take a look at the 37946 project, you will see that Marklin has tweaked the project and is using the equaliser. But note that your speakers might need a higher frequency in the high-pass filter setting. might be that the new project is also tuned to reduce resonance?.

Also worth noting is that there have also been a few occasions where Marklin has wired two speaker locomotives incorrectly.
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