Audi RS5 Rear Side Panel Speaker Size

The Audi RS5 rear side panel accommodates 0.75 inch speakers, supports a 6.5 inch speaker size, and accepts 8 inch units. Compatible types across these sizes include tweeters, midbass units, full-range speakers, and woofers. The specifications cover the 2013 to 2018 model range.

Year	Type	Size (inch)
2018	Tweeter	0.75
2018	Midbass / Full-Range	6.5
2015	Tweeter	0.75
2015	Woofer	8
2015	Midbass / Full-Range	6.5
2014	Tweeter	0.75
2014	Woofer	8
2014	Midbass / Full-Range	6.5
2013	Tweeter	0.75
2013	Woofer	8
2013	Midbass / Full-Range	6.5

Speaker Types

Type	Description
Tweeter	A small driver built for high frequencies, typically from about 2,000 Hz to 20,000 Hz. It adds treble detail and clarity and is usually mounted near ear level or aimed at the listener.
Midbass	A driver tuned for upper bass and lower midrange, roughly from 80 Hz to 500 Hz. It has longer cone travel than a full-range unit, which supports stronger bass in doors and panels.
Woofer	A larger driver for low frequencies, typically from about 40 Hz up to 1,000 Hz. It delivers most of the bass and lower midrange in a door or panel speaker system.
Full-Range	A single driver that reproduces bass through treble without a separate crossover network. It is the simplest replacement option and is common in factory audio systems.

Additional Notes

The rear side panel location in the Audi RS5 accommodates up to 3 distinct speaker sizes simultaneously, as shown by the 2013-2015 model years listing 0.75 inch, 6.5 inch, and 8 inch positions within the same panel.
A 0.75 inch tweeter in the rear side panel handles high-frequency reproduction, typically operating in the 5,000 Hz to 20,000 Hz range, where the small diaphragm area allows rapid pistonic movement necessary for accurate treble detail.
Because tweeters are highly directional at high frequencies, placement within the rear side panel positions the high-frequency dispersion toward the cabin interior, contributing to the rear stage of the listening environment.
The 6.5 inch driver size is listed as compatible with midbass and full-range types, a cone diameter that supports reproduction of midrange and upper bass frequencies, generally from approximately 80 Hz to 5,000 Hz in a midbass role.
In a full-range application, the 6.5 inch driver in the Audi RS5 rear side panel covers a wider frequency span without relying on separate high-frequency drivers, though the upper frequency extension of a cone this size is physically constrained by the larger diaphragm mass.
The 8 inch woofer, present in the 2013, 2014, and 2015 specifications for the Audi RS5 rear side panel, indicates a mounting cavity within the panel large enough to house the larger basket diameter and the deeper excursion depth typical of low-frequency drivers.
An 8 inch woofer operates effectively in the lower bass range, generally below 500 Hz, where the greater cone surface area moves more air per cycle to reproduce frequencies that smaller drivers cannot efficiently reproduce at the same output level.
Woofers are relatively omnidirectional at low frequencies, so the rear side panel position of the 8 inch driver does not critically affect directional bass perception within the cabin.
The co-existence of a 0.75 inch tweeter and a 6.5 inch midbass driver in the rear side panel across multiple model years indicates the panel contains separate mounting points for each size rather than a single universal cutout.
The 2018 Audi RS5 rear side panel specifications list only 0.75 inch and 6.5 inch sizes, without an 8 inch position, indicating a difference in the spatial or structural characteristics of the panel compared to the 2013-2015 configuration.
A rear side panel location is structurally distinct from door-mounted positions in that the panel typically offers a more rigid mounting surface with less susceptibility to the flex associated with moving door assemblies, which can influence low-frequency performance of larger drivers like the 8 inch woofer.