Alesis Alexis M1 User Manual

Surround Sound

32

M1 A

CTIVE 

R

EFERENCE 

M

ANUAL

The use of M1 Actives (or any monopolar speaker) as full-range surrounds would be
useful in the following cases:

•

 

If the surround speakers are just as important as the fronts in achieving a
specialized effect, such as completely mixing the sax in the left rear only and a
flute in the right rear.

•

 

If you know that your mix will always be played back on a monopolar surround
system.

•

 

If the control room is completely damped with sound absorption on all surfaces.
(This renders the reverberant-field generating properties of a bipole/dipole
speaker ineffective.)

* Dolby Surround, Dolby Pro Logic, and Dolby Digital are trademarks of Dolby Laboratories, Inc.

C

HAPTER 

4

T

ROUBLESHOOTING

Troubleshooting Index

If you experience problems while using the M1 Active/Surround systems, please use
the following table to locate possible causes and solutions before contacting Alesis
Technical Support for assistance.

Symptom

Cause

Solution

No sound

Speaker disconnected

Check input cable
connections

INPUT LEVEL down

Turn up input control on
back panel

AC power not on

Blue LED on front should be
on.  Check switch and
power input cable.

Unfocused sound, bass
frequencies muddy or
missing

Inputs out of phase

Check + and - connections
from mixer to input.  Verify
“pin 2 is hot”.

Subwoofer being used
improperly

Install port plugs when
using a subwoofer

Poor mix

Compare to commercial CD
of similar style: time to
remix your track....

Distorted output

Power amp overloading
speakers

Tur n  d own  lev e l 

Damaged speaker
components

Sw ap c han n e l  s to  se e  i f  th e 
pr ob l e m fo l l ows  th e 
spe ak er ;  i f  so  c on tac t
Te ch n i cal  Suppor t