Welcome to the ProSub. Please take a little time to read this manual and to follow, as far
as practical, the guidelines it contains. We would also draw your attention to the Important
Safety Instructions on this page.
Careful installation will help ensure that your ProSub performs optimally. Should you have
any questions not covered in this manual we are happy to try and answer them either by
telephone or email. Contact information can be found on the back page,
The ProSub is a relatively delicate precision engineered product that can be damaged by
inappropriate handling. It is also large and heavy. Please take great care therefore when
unpacking or moving it. Plan any handling in advance of carrying it out - ideally with a second
person to help. Please take care when unpacking or moving the ProSub not to touch any
of the drivers. Damage to a driver will at best degrade performance and at worst result in
The enclosure surfaces should also be handled sympathetically. Any cleaning should only
require a lint-free cloth or a soft brush. Be wary of using any polishes or solvent based
The ProSub is intended to be used in either a stereo
monitoring systems to extend low frequency bandwidth, or to
reproduce the LFE channel in a in a 5.1 channel monitoring
The ProSub is intended primarily to partner the Acoustic
Energy ProSat, however ProSubs may also be used in pairs to
partner the AE22 or AE1 Classic nearfield monitors.
Note: The ProSub may also be used to partner other
manufacturers’ nearfield and compact monitors.
The ProSub is not magnetically shielded and may cause
picture distortion if located too close to a CRT screen or data
loss if magnetically sensitive media is brought too close.
Important Safety Instructions
Ensure that your ProSub is set to the appropriate mains input voltage before it is connected
to a mains socket. The warranty does not cover damage caused by incorrect mains voltage.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has
two blades and a third grounding prong. The third prong is provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the
10. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is damaged,
liquid has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.
15. The apparatus shall not be exposed to dripping or splashing and that no objects filled
with liquids, such as vases, shall be placed on the apparatus.
16. The MAINS plug is used as the disconnect device, the disconnect device shall remain
17. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or
If you are already familiar with the characteristics of your
studio and the way speakers perform in it, you may already
have a good feel for where to position ProSub. However,
installing any new component provides a good opportunity to
review an existing set-up and perhaps make improvements.
In principle there is great freedom of position with sub-
woofers. In practice, however their performance is
fundamentally influenced by the room and their location. Small
changes of location, or of the acoustic character of items
in the immediate vicinity of a subwoofer, can significantly
influence its performance.
If using a single ProSub, place it on the floor along the front
wall of the studio room between the front channel satellite
speakers. It should be well away, but not equidistant, from the
If using a pair of ProSubs with AE22 or AE1 Classic nearfield
monitors locate each ProSub on the floor, if possible, directly
beneath, its corresponding satellite.
In either application, to keep ProSubs clear of any large
resonant objects - furniture panels, heating radiators, etc.
Don’t worry if, thanks to the architecture or layout of your
room, it is not practical to follow these guidelines exactly.
The most important thing is to experiment with the different
options that are practical and find the best one.
Once your ProSub or ProSubs are connected and working,
and you begin to become familiar with their performance,
it is likely to be worthwhile experimenting a little more with
positioning. For example, moving ProSubs towards walls and
corners will increase the level of low bass. This gain may
however be at the expense of bass definition and consistency
over the listening area.