Hidden Subwoofers
Maximum bass performance
Minimal visual impact
Hidden Subwoofers
Passive Integrated Subwoofers
Designed to be installed into the fabric of the property, visible only by way of the port vent, Amina subwoofers offer smooth low frequency extension with minimal visual impact.
With bass performance that can add warmth or shake a room when needed, the range of passive subwoofers compliment Amina DML loudspeakers to help deliver a breathtaking full bandwidth experience.
ALF120
Inside ALF120
The passive subwoofer that can play the loudest and lowest whilst remaining easy to install into a wall or ceiling.
Using a Distributed Transmission Line design with an array of 4″ drivers, the ALF120 packs a punch while staying incredibly slim. At only 118mm thin and 345mm wide, it is designed to fit into a cavity wall or ceiling.
Requiring a DSP amplifier (or suitable system processor), the ALF120 can play down to 27Hz at 111dB at 1m from just 50W. This makes the subwoofer perfect for great music systems but also media rooms and home theatres.
Amina Tip:
Whilst subwoofers and bass enhancers have been designed to fit into a wall or ceiling, another great installation option is to build them into cabinetry or even have them sat in-room. A subwoofer could port through kick-boards in a kitchen, or from under a sofa or bed. As long as airflow is not impeded, the subwoofer vent can be easily disguised.
Designed to be fitted into a cavity wall with 16″ spaced studs (on centre), the ALF120 is mounted using felt pads which not only hold it securely in place, but also mechanically decouple the cabinet from the structure of the property, allowing all sound energy to be effortlessly ported directly into the room and not into the rest of the structure.
It is also possible to install into a ceiling void or into furniture if this helps to further remove the slotted vent from the eye-line of the listener.
Being a passive subwoofer, the ALF120 requires external amplification, however due to the Distributed Transmission Line design using 4″ drivers, it requires DSP to maximise performance and ensure it continues to perform for a lifetime.
Either requiring a dedicated DSP amplifier or a system processor and ‘dumb’ amplifier combination, the requirement is for 3 bands of parametric EQ, 48dB/Octave bandpass filtering and absolute voltage limiting. For information on a suitable amplifier or processor, please contact your distributor.
Note:
Failure to use adequate DSP protection may result in warranty becoming void.
| Specification | ALF120 |
| Nominal Impedance | 6 Ohms |
| Power Handling (continuous/peak) | 50W/50W |
| Sensitivity (@1m/2.83Vrms) | 93dB (half space) |
| Frequency Response (-6dB) | 24Hz - 120Hz 48dB/oct. DSP bandpass |
| MaxSPL | 108dB @ 1m (half space) |
| Electrical Connection | 3-way binding post (4mm plug, spade or bare wire) |
| Dimensions | 1605mm x 345mm x 118mm (633/16” x 131/2” x 43/4”) |
| Product Weight | 17.5kg (38lb 91/4oz) |
| Port Locations | Front or end-fire location options |
| Port Slot Dimensions | 308mm x 14mm (12” x 9/16”) |
| DSP Requirements | HPF & LPF (LR 48dB/oct.), 3 bands PEQ, Voltage limiting |
| Warranty | 3 years (void if used without DSP protection) |
| Datasheet | ALF120 Datasheet |
| Datasheet | Images | Installation Guide |
| ALF120 Datasheet | ALF120 | ALF120 Installation Guide |
| ALF120 Port | ||
| ALF120 Terminal |
ALF100SM
Inside ALF100SM
The Amina ALF100SM is a passive subwoofer designed to partner the range of Amina invisible, in-wall panel speaker systems in applications such as home cinema systems and large room, high pressure stereo systems. The ALF100SM can also be installed to partner conventional free-standing loudspeakers. Home Cinema systems may benefit particularly from the space saved by the use of concealed subwoofers.
Mounting directly to studs or joists on 400mm / 16″ centres and replacing a section of plasterboard, the ALF100SM is designed to fit into standard 4″ cavity stud walls and cavity ceilings.
Requiring a DSP amplifier (or suitable system processor), the ALF100SM can play down to 30Hz at 110dB (half space) at 1m. This makes the subwoofer perfect for great music systems but also media rooms and home theatres.
The ALF100SM easily blends into any room by mounting between studs or joists in walls and ceilings with the subwoofers front flange fixing directly to the face of studs or joists on 400mm (16”) centres, effectively replacing a section of 12.5mm (1/2”) plasterboard /drywall while only requiring 89mm (3 1/2”) of cavity depth. The tapered edges of the faceplate allow the subwoofer to be plastered up-to and feathered in or fully plastered over before decorating as normal.
The subwoofer vents into the room via a discrete slot which is often located above, or inset in baseboards or disguised in HVAC vents.
Being a passive subwoofer, the ALF100SM requires external amplification. Digital Signal Processing is also required in order to apply protection.
Either requiring a dedicated DSP amplifier or a system processor and ‘dumb’ amplifier combination, the requirement is for a high pass filter and low pass filter ideally with 48dB/Octave bandpass filtering as well absolute voltage limiting. For information on a suitable amplifier or processor, please contact your distributor.
Note:
Failure to use adequate DSP protection may result in warranty becoming void.
| Specification | ALF100SM |
| Nominal Impedance | 4 Ohms |
| Power Handling (continuous/peak) | 200W/200W |
| Sensitivity (@1m/2.83Vrms) | 90dB (half space) |
| Frequency Response (-6dB) | 30Hz - 160Hz 48dB/oct. DSP bandpass |
| MaxSPL | 110dB @ 1m (half space) |
| Electrical Connection | Push-button spring terminals |
| Dimensions | 1066mm x 409mm x 99mm (41 15/16” x 16 1/8” x 3 7/8”) |
| Product Weight | 20kg (44lb 2oz) |
| Port Locations | Front only |
| Port Slot Dimensions | 20mm x 307mm, corners R10mm (13/16” x 12 1/16”, R3/8”) |
| DSP Requirements | HPF & LPF (LR 48dB/oct.), Voltage limiting |
| Warranty | 3 years (void if used without DSP protection) |
| Datasheet | ALF100SM Datasheet |
| Datasheet | Images | Installation Guide |
| ALF100SM Datasheet | ALF100SM | ALF100SM Installation Guide |
| ALF100SM Port | ||
| ALF100SM Terminal |
ALF80
Inside ALF80
The mid-range passive subwoofer that can add great depth to music, film and television whilst remaining easy to install into a ceiling or into cabinetry.
Using a 4th order bandpass design, the ALF80 can play at high level and with great depth whilst only having a small circular visible vent into the room.
Built in filtering and protection circuits mean that the ALF80 can be powered from a 150W amplifier delivering full-bandwidth content.
Amina Tip:
ALF80 and ALF40 subwoofers have built in protection and filtering meaning that a full-bandwidth amplified signal can be supplied to the subwoofer, allowing it to perfectly integrate with Amina DML panel loudspeakers.
ALF80 can be mounted directly to stud frame using the supplied metal mounting L-brackets.
Port tube can be relocated to one of 3 port-opening positions and can have it’s length adjusted to perfectly match the depth of the ceiling void (maximum adjustment 100mm).
Note:
Port tube can be adjusted, but should never be replaced, bent, extended or blocked. Doing so will impact the performance of the subwoofer.
Being a passive unit, the ALF80 requires external amplification. Given that both protection and filtering are both built in to the subwoofer itself, the unit can be powered by a 150W amplifier delivering full-bandwidth content.
The ALF80 can be powered by its own dedicated amplifier channel, alternatively it may be wired in parallel to a single Amina DML loudspeaker panel.
Note:
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 a 4 Ohm subwoofer in parallel to a 4 Ohm loudspeaker panel without affecting overall load that the amplifier will see. For example, the ALF80 can be wired in parallel to a Mobius5 and still appear as a 4 Ohm total load.
| Specification | ALF80 |
| Nominal Impedance | 4 Ohms |
| Power Handling (continuous/peak) | 150W/200W |
| Sensitivity (@1m/2.83Vrms) | 86dB (half space) |
| Frequency Response (-6dB) | 36Hz - 120Hz (18dB/octave band-pass) |
| Max SPL | 104dB @ 1m (half space) |
| Electrical Connection | Push button spring terminals |
| Dimensions | 605mm x 270mm x 156mm (237/8” x 105/8” x 61/8”) |
| Product Weight | 9.2kg (20lb 41/2oz) |
| Port Locations | Front, side or end-firing port locations |
| Port Diameter (inner/outer) | 50.8mm (2”) / 55.8mm (23/16”) |
| Port Tube Length Adjustment | 110mm (45/8") |
| Warranty | 3 years |
| Datasheet | ALF80 Datasheet |
| Datasheet | Images | Installation Guide |
| ALF80 Datasheet | ALF80 | ALF80 Installation Guide |
| ALF80 Terminal |
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).
ALF40 can be mounted directly to stud frame using the supplied metal mounting L-brackets.
Port tube can be relocated to one of 2 port-opening positions and can have it’s length adjusted to perfectly match the depth of the ceiling void (maximum adjustment 80mm).
Note:
Port tube can be adjusted, but should never be replaced, bent, extended or blocked. Doing so will impact the performance of the subwoofer.
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 DML loudspeaker panel.
Note:
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 (continuous/peak) | 30W/60W |
| Sensitivity (@1m/2.83Vrms) | 88dB (half space) |
| Frequency Response (-6db) | 65Hz - 155Hz (18dB/oct. band-pass) |
| Max SPL | 103dB @ 1m (half space) |
| Electrical Connection | Push button spring terminals |
| Dimensions | 359mm x 157mm x 134mm (141/8" x 63/16" x 51/4”) |
| Product Weight | 3.2kg (7lb 1oz) |
| Port Locations | Side or end-firing port locations |
| Port Diameter (inner/outer) | 39mm (11/2”) / 43mm (111/16”) |
| Port tube length adjustment | 80mm (33/16") |
| Warranty | 3 years |
| Datasheet | ALF40 Datasheet |
| Datasheet | Images | Installation Guide |
| ALF40 Datasheet | ALF40 | ALF40 Installation Guide |
| ALF40 Port | ||
| ALF40 Terminal |