The Infiniti M37 rear deck lid accommodates a 3 inch speaker size across all listed model years. Full-range units represent the compatible audio type for the system. These specifications cover the years 2011 to 2013.
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 deck lid of the Infiniti M37 is a surface-mounted location positioned at the rearmost horizontal panel of the vehicle's interior, situated between the rear passenger cabin and the trunk area.
Speakers mounted in a rear deck lid position radiate sound upward toward the rear cabin ceiling and windshield, relying on reflective surfaces to distribute audio toward front and rear passengers.
A 3-inch speaker diameter places the driver cone in a small-aperture category, which corresponds acoustically to a limited low-frequency extension and a primary operating range concentrated in the upper-midrange and high-frequency bands.
The reduced cone area of a 3-inch driver means lower air displacement compared to larger diameters, making deep bass reproduction outside the practical capability of speakers at this size in the M37 rear deck lid.
The full-range type designation indicates a single driver intended to reproduce multiple frequency bands simultaneously, spanning from lower midrange through treble without the assistance of a dedicated crossover network directing specific bands to separate drivers.
In a rear deck lid application, a full-range driver at 3 inches functions primarily as an ambience or surround-fill speaker, reinforcing mid and high frequencies in the rear listening zone.
The Infiniti M37 rear deck lid's 3-inch full-range driver requirement reflects a spatial constraint typical of OEM deck lid cutouts, where shallow mounting depth and limited baffle area restrict driver size.
Mounting depth is a relevant consideration for 3-inch full-range drivers in the M37 rear deck lid, as deck lid panels typically accommodate shallow-profile drivers to avoid interference with trunk mechanisms or lid reinforcement structures.
The consistent 3-inch full-range specification across the 2011, 2012, and 2013 model years indicates the rear deck lid cavity dimensions and mounting configuration remained unchanged across the listed production span.