Class 455/456 Sound Mod

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Changelog

Version 1.1 – Release: Nov 2025

Visuals & Fixes:

Custom Class 455 weathering textures replaced with upscaled realistic dirt textures around the front and sides by the doors.
New Class 455/7 window frame image texture added to all liveries (Very aware it may look slightly inaccurate on /9 variants).
Various Class 455 external interior tweaks. Adjusted Class 455/8 interior colours and brightened Ex-508 TSO interiors.
Improvements to main cab textures – colour adjustments to control desk and speed dials, and new post-refurb SWT cab reskin for SWT New livery.
Improved Class 455 physics for both AC and DC. AC acceleration is no longer sluggish while in notch 2 and 3.
Fixed QD/scenario consist for Class 456 NSE Faded 4-car, where every carriage would load with a DMSO instead of the usual DMSO + DTSO formation.
Updated Class 455 scenario menu images to show off improved visuals.

Sounds:

Tweaks to existing Vossloh Kiepe AC motor sounds. Reduced in volume, and adjustments made to select few samples to improve overall sound.
New loud AC motor blueprints. Included as an additional consist playable alongside existing AC motor sounds. Applies to the Ex-SWT (SWR) livery.
Distinctive AC motor power off/power on sounds at speed when moving from ‘notch 1’ to ‘off’ or vice versa.
New AC brake application sound, and added delay to dynamic brake sound when moving from ‘release’ to ‘step 1’.
New external AC motor bogie clunks which are audible upon initial acceleration.
EE507 motor sounds redone, with different audio for the Class 455 and Class 456 respectively.
Improved pitching at speed for Class 455 DC motor idling and reverser whine sounds, and new idling sounds added to the Class 456.
Camshaft audio reduced in volume.
New Motor Alternator sounds for the Class 455/7 and /9.
Class 455/8 MA sounds slightly drop in pitch whenever power is applied to simulate increased load. DC mode only.
Compressor sounds redone. Random pitches also removed.
New ticking spirax valve audio.
New Class 455/8 horn sounds.
External power on/power off clunks added to the Class 456, audible when moving from ‘off’ to ‘notch 1’ and vice versa.
New flange audio added to the Class 456, and improvements made to Class 455 flange sounds at mid speeds above 30mph.

Visuals & Fixes:

Custom Class 455 weathering textures.
Faded yellow front added to Class 455 SWT Old livery.
Lighter yellow front added to Class 455 Southern livery, and yellow front with cant line added to Southern (PRM) livery.
Livery colours and cant lines extended around carriage ends accordingly.
Reskinned Class 455 Ex-508 TSO into SWT colours for SWT New livery, and removal of TfL Rail maps in all other liveries.
Cab internal computer destination display covered in all liveries except Southern/Southern (PRM).
Shortened Class 455 preload names, and new scenario menu images.
Fixed right-side door bug on DTSO carriages.

Sounds:

Class 455 Vossloh Kiepe AC motor sounds
New blueprints for AC motor idling audio, and improved pitching at speed.
AC dynamic brake cut-out speed changed from 7mph to 4mph.
Class 455/456 EE507 motor sounds.
Class 455 DC motor idling sounds.
Class 455 DC reverser whine.
Class 455 brake squeal.
Class 455 flange audio.
Camshaft sequence audio – ‘Series’ to ‘Parallel’, ‘Parallel’ to ‘Weakfield’, line switch ‘Pop’ and camshaft reset ‘hiss’
Class 455/456 Compressor sounds.
Motor Alternator sound for the Class 455/8.
Class 455/456 run sounds.
Class 455/456 track joints.
Class 455 third rail shoe audio.

Requirements

Yawwie