Amina ALF40 Compact bandpass bass enhancer 40W

Code: ALF40

Inside ALF40

The entry-level passive bass-enhancer that can add warmth to music and television whilst remaining easy to install into a ceiling or into cabinetry.
Using a 4th order bandpass design, the ALF40 can play at medium level whilst only having a small circular visible vent into the room.
Built in filtering and protection circuits mean that the ALF40 can be powered from a 60W amplifier delivering full-bandwidth content.
Amina Tip:
All Amina subwoofers and bass enhancers can have their port location adjusted, giving great installation flexibility. The ability to adjust port location allows the unit to be installed in with an appropriate cabinet orientation to suit construction restraints. ALF40 and ALF120 have two port location options (end and front-fire), ALF80 has three port location options (end, side and front-fire).




Being a passive unit, the ALF40 requires external amplification. Given that both protection and filtering are both built in to the subwoofer itself, the unit can be powered by a 60W amplifier delivering full-bandwidth content.

The ALF40 can be powered by its own dedicated amplifier channel, alternatively it may be wired in parallel to a single Amina VPT loudspeaker panel.


Please take care to match total impedance load to the amplifier when wiring subwoofers and speakers in parallel. It is not wise to wire two subwoofers in parallel to each other, however it is possible to wire an 8 Ohm subwoofer in parallel to an 8 Ohm loudspeaker panel without affecting overall load that the amplifier will see. For example, the ALF40 can be wired in parallel to an iQ3 and still appear as an 8 Ohm total load.


Specification ALF40
Nominal Impedance 8 Ohms
Power Handling 30W/60W
Sensitivity 88dB 1m/2.83Vrms (half space)
Frequency Response 65Hz – 155Hz (±6db) (4th order bandpass)
Electrical Connection Sprung Terminal
Dimensions 359mm x 157mm x 134mm (141/8” x 63/16” x 51/4”)
Product Weight 3.2Kg (7lbs 1oz)
Fixing Requirements Mounting Brackets (included)
Protection Built-in
Port Locations Front and end-fire, adjustable port location options
Port Diameter
(ID / OD)
39mm (14/8”) / 43mm (111/16”)
Datasheet ALF40 Datasheet