JBL AC895 Speaker 100082122 The one piece base is

The one piece base is roto-molded of Linear Medium Density Polyethylene (LMDPE) while the hard front and rear doors and lid are Injection molded of Rubber Modified Styrene (RMS)

Removable foam section to fit the TouchMix-16

Key Product Features: Extremely durable

and an 80Hz high-pass filter to remove low frequency hum

the answer is

JBL AC895 Speaker 100082122 The one piece base isJBL AC895 8 inch 2 Way Speaker with 90 x 50 Horn AC895 is a compact 2 way full range loudspeaker system comprised of one 209 mm (8 in) low frequency driver and one 25 mm (1 in) exit 25 mm (1 in) voice coil compression driver. The rotatable PT Progressive Transition waveguide provides 90 by 50 coverage in vertical cabinet orientation. Highslope passive crossovers minimize band overlap and well controlled offaxis response. The cabinet is fitted with M10