Sound Technology
17 Letchworth Point,
Hertfordshire, SG6 1ND,
England.
Phone:
+M;1.462.480800
Fax:
CA90016
4.3, 5.4, 5.2,
Lechworth,
+4.162.480ffi0
October, 1996
Page 5
Contents
About the Point
Unpacking and
Seven
lnspection
Spcaker Installatlon
Speaker Placement....
About Wire
Troubleshooting
.................
..........,
......... tl
.....................-
t4
17
Point Seven Reference Manual
Page 6
About the Point
Seven-
Chapter
1
Aeour
Unpacking
Your Point
designed
highly
The shipping
o
.
o
o
It is important
caril anil
The
pairs.
sides.
Engineering
Your new Alesis
space linited
monitor
Tonally,
own Monitor One with
desigrration refers
piston
silk doqne tweeter
specifically for non-fatiguing
lf you're
Instalhtion"
The Point
This material is 25%
transient response in the
intelfigibility.
rubber
sunlight, heat
hours),
to protect
unlikely
This
instruction
Alesis Point
Port
Plugs
Alesis
warranty card
maikd it
Point
Sevens
The Point Seven
or when portability
every effort has
area of the Monitor
in a hurry to get
Seven's 5 1 / 4" woofer
surround, are both materials
the sound should remain
CHAPTER
rHE
and
Sevens
carton should
to register
recording environments,
,
for
lnspection
were packed
the
speakers during
event that you
manual
Sevens with the
(for
use with
back ta Alesis,
are symekically
need
contain
Subwoofers)
your purchase;
please
speakers
Stdement
Point Seven Shielded
is a requirement.
been made to emulate the
slightly less
to the Seven's 5 | / 4"
One's 6 1. / 2" woofer. The
offers a frequency response
connection
lighter than polypropylene
The non-woven
and humidity. Therefore,
near-field
starteil with thc Point
placerneflt
and
low-to-midbass region
carbon fiber
1
Polur
carefully at
same serial number
designed, avoiding
you
cone is made of proprietary
virtually unchanged
the factory, and
shipping.
to retum
the following
if you lnae
take the
receive
Reference Monitors
for use in close proxirnity
deep bass extension. The
woofer piston area
monitoring.
tips.
which are nearly
after the initial
Please
the Point Sevens
items:
as shown
not alruily
to
time
do so nou.
should be identical on
Seoens, skip ahead to Chapter 2,
cone,
the need for mirror-imaged
accurate studio sound of Alesis'
Point Seven's newly developed
to 27kHz, which has been tailored
with
twice the stiffness for quicker
and improved midrange
along
with the closed cell synthetic
impervious to ozone, direct
break-in
for the life of the product.
S=v=lu
the shipping
retain this
for servicing.
on shipping carton
out your
flleil
are intended for very
"Point
as being seven tenths the
non-woven carbon fiber.
period (about
carton
container in the
warranty
the left and right
to a computer
Seven"
"spealcer
20
was
Point Seven
The
Seven's shield"d t*""t"r
chamber to lower the free
feafures
a pure silk dome, an
viscosity ferrofluid
respons€ to power
Reference Manual
formulated specifically
handling.
ntt'tt.es a
air resonance. This
intemal pole-piece-mounted
vented pole piece with a
high
to retain
(very
Q
the best balance of transient
separate rear
highly damped) design
phasing plug and low
Page 7
Chapter
-
About
1
The frequency
from itJ2kHz
to Z7kJl.lz,
fatiguing,
linear
the Point
crossover
at which point
long term,
mix when
Seven
response of Alesis'
frequency
it drops
high levef nearfield
played back
on home or
ProPrietary
10kHz. At
to
-6d8.
by
tweeter
10kHz the
an optimal
This is
mixdowns.
car systems
is designed
This desigp
from appropriate
to be flat
response drops
response
results in
(t
smoothly
for non-
a flat,
distances.
2 dB]
Magpetic
from design
even extremely
proximity positioning.
use of a second
cup which
The eleven element
filters for both
compensation.
impedance
ahlady very effectively
Point Seven
beginning
"knees"
The tweeter
From 3400H2 down
acoustic
with prodigious power
crossover point.
1.600H2-3200H2 for the
acoustical
tweeter. It is this
time alignment.)
Butterworth alignments are:
a) a virtually perfect
b) exceptionally
c) a longer smoother,
shielding
a second
rolloffs approaches 60dB/octave.
"offset"
accurate
response curves) through the rniddle octaves.
(Ilat)
linear
and silk
of both the
inceptioo
sensitive
opposing-field-oriented
encases the
crossover
the high and
(Compensation is unnecessary on
characteristic
is 2OOOHz. The actual voltage curve,
its rolloff
at
time and from 1600H2 to
voltage cuwe
to 1700H2 the tweeter
(Note
required to compensate
"offset"
The advantages of these
phase.
dome tweeter.
group
linear power
response
power
Point Seven's
to
the system
21" computer
Shielding
entire
damped with
800H2
handling capability,
that the slightly non-complementary
woofer versus 3400H2-1700H2
or frequency spread
sound characteristic
had
of both
matnetic structure.
features
low pass sections
is exceptionally
@ 6dB / octave
"knees"
also
characteristic
delay
response
projects
monitors
modified algorithm
the ferrofluid.)
twice
was not an afterthought.
drivers
than three
less
exhibit
would be
tweete! is accomplished
and
woofer
'bucking"
(several
an exceptionally large
magnet,
with
along
tweeter.
the
as desigrred
flat
to 1600H2.
3200H2 the
rolls at
This radical curve shaping
even at the extrenely low 2kllz
for mechanical offset of the woofer and
"altered
blend between the non-woven
The crossover
however,
rate is l2dBloctave.
but the curves are substantially steePer.
l2dBloctave. Below 1700H2 the
for the tweeter are the
which brings both drivers
algorithm" high
(almost
averaged, off-axis
Along with the 5
gauss leakage
unaffected by
plus
third order Butterworth
woofer impedance
The tweeter's
and the resonance
shows the woofer
At
point the
this
curve slope spreads
a straight tine) yielding
"sweet
a sixteen
frequency
yields a tweeter
and low pass
frequency
1./4"
cone size
spot".
close
curve
into proper
Rather,
so that
the
by
gauge steel
is
peak
of the
of
this
CF woofer
The Point
vinyl
core. The eight
Point Seven
Dual, front baffle mounted,
Qtc
used
are provided.
design
characteristics.
because the
into the
Seven's cabinet conskuction employs
composite material laminated
=
1.2
alone. For critical mixing/playback,
comer protectors used on our
in anticipation of its
(a
3dB bump @
The plugs transform
giving a more
This versatile,
woofer's EBP
narrow paramete! range wherein
120I{z) which provides a balanced,
critically
(E{ficiency
Alesis'proprietary non-skid rubber-
to a .625" MFD
portable
application.
9" long ports have been carefuIly
recessed head,
the
Point
damped
"convertible"
response
Bandwidth
both configurations will work
(medium
Monitor Two have been adapted
Seven into an
ported/closed box feature
polyethylene
=
(Qtc
.9) and improved transient
Product has been designed
Point Seven Refermce
fiberboard)
density
integrated to yield a
full range sound when
acoustic
"port
suspension
is
Possible
equally well.
plugs"
to the
to fall
Manual
Page 8
About
the Point
Seven-
Chapter
1
A Liltle
br the early
almost
expensive
well-constructed
overlooked
executives who
control
engineers and
accurately
cassettes
qonh.el:room,acorrstg-treatments
parircularly,b€yond!&e brrdget
were
monitoring.
Near-field monitors, by their definition,
listener. The
and the listener
present
field monitoring, the surrounding acoustic environment
significant
A
and poweled by
budget
repeatable
because
studios use smaller speakers
monitors have become
History
days of recording, most recording studios
exclusively. Unfortunately, they also
acoustic treatment
big monitoring system
by the studio owners who
paid for the
knobs, and clients enjoyed
producers eventually leamed
rrix music because
and
C-D,players.
growing in numbprs,
idea
here is to improve the
by making
(reflected)
indirect
factor in establishing the monitor system's sound
good
set of small monitors
reults"
they
a 1*watt
CarrM to
In fact,
how they will sound in
know
prices.
(often poorly done) of. the
big studio's
it wasn't the way
Also, big
Aner4{
it shorter, thereby
sounds to
properly placed
amplifier
another studio, the same
some recording engineers carry
to augment their big monitoring systems,
proven
tools
really was
wanted to imPress
time.
"cranking-up"
monitor systems
going through the roof
were
limits of smaller project
of accurate monitoring
way
are intended for
get
will
in
the
big monitor speakers
used
required high
These big systems
the volume.
that this was not
most people listened
direct acoustic path
giving less opportunity
and muddle things up. With
back in
in a reasonably
yield
surprisingly
almost any room. Now, even the big
recording business.
powered
entire control
impressive to
the record company
and the costs
and home studios
mounting close to the
becomes
monitor should
their own speakers around
amplifiers and
room. Still, a
listen to, a fact not
had big level
Fortunately,
the best way to
to their radios,
for
the
(no
pun intended),
was needed: near-field
between the speaker
character.
accurate
for the always
a much less
non-reverberant room
results at
also provide
and near-field
recording
required
which
near-
Point Seven Reference
Manual
Page 9
CIIAPTER 2
Speaker lnstallation - Chapter
2
SpemER
Like any speaker system, your Point
in a suitable acoustic environment. Achieving
straightforward, but even with near-field
acoustics of the listening room
significant contributors to an inaccurate
Speaker Placement
While near-field monitors are
always prudent
user should
frequency response. ln generaf
will be, although placement
has to do with
monitor system to be either light
your
within
You should avoid locating your
large
tile,
surfaces, so the best way
away from reflective
surfaces separated from
still have
Unfortunately, the
acoustic conduction into the
response. Speaker placement
acoustic paths between
undesirable comb filtering
and the second is via a
to optimize the listening
be aware of the effect
the way low-frequency
lstening room.
open walls or table
to deal with
walls, windows
the monitoring
the top surface of the
board itself can
the speakers
effects
reflection off
lnsrnl.r.nrroru
Sevens will work best when properly positioned
proper speaker
monitors, speaker placement and the
itself are
too
often
overlooked
and uninspiring monitoring environment.
more forgiving of the
within a larger room
tops. Sti[ many rooms used for
mixing board to
board can affect your monitor's
on the
environment whenever possible. First,
that the size of the listening room can have on low
the
smaller the room, the stronger the bottom end
waves travel in closed spaces. If you find your
or heavy
Point
on the bottom,
Sevens near reflective surfaces
them is to
and sizable
positiory typical mixing situations usually
be a major source of reflections and
console's meter bridge
and the recording engineer which results
poor
and
the mixer main control panel:
surrounding
can
place
objects.
with.
deal
imaging. The first
placement is usually
and
become
can
room acoustics, it is
also make
the monitors out in the room
a difference. This
try moving
Even with
amplitude and phase
provides
them around
such
recording have these
these reflective
the additional
for two
path
is the
the
as glass,
clear
in
direct one,
Point Seven
Monitors placed
back onto the
Reference Manual
on the
console's meter bridge can directly radiate
console control
reflection
panel
causing a strong delayed
at the listening
position
Page 10
Chapter
2 - Speaker
Installation
kind of speaker placement also couples
This
more readily
cabinet
placing the
behind,
console's
speakers on
the console
control panel is now blocked by
Moving the monitors
consideration shoutd also be
Careful
speakers.
distance
two speakers
Figure below
so that the
that
rotation
Alesis
between the listener and either speaker. In other
prime listening
require
of the cabinets.
into the console's chassis. Both conditions
o.
wn
their
as
shown
belort. In this
to a
the bridge
recommends
are at the three comers of a triangle havirg
shows this coneept. Note thatboth speakers
monitoring by inot'e than one
to block the
that
position
This will widen
acoustic energy from the speaker's
acoustcally detached,frop,
standd
locdtion, the
the meter bridge.
position behind the
offending
glnen
tlre distanc.e
is directly
engineer
the prime listening
reflective
physiicel
Se
to
b.*tueen the speakers
in front
are accommodated
should be reduced by
and
slightly
reflective:gath
off
meter bridge causes
path
spacing.
betweert
equal
the lisierer
words,
length sides.
equal-
are turried
of each speaker.
position
in somewhat
Applications
by
somewhat.
the
the
the
and the
The
a smaller
The speakers
listener should
the three
a triangle
and
be at
corners of
having
equal length sides
Prime
Listening
Position
Point Seven
Reference
Manual
Page 11
Speaker
brstallation
-
Chapter
2
Alesis has
If, however,
recording engineer's
this
The
whereas other
from
or
attempting
designed
you need to keep their height
way, they should
Point Sevens are
slipping around
adjust their
speakers
position slightly,
to slide them.
the Point Sevens
obstructions, they
visual
installed with the tweeters
be
completely covered
provide small stick-on
while they are
for vertical
playing. If
lift them off the
mounting.
profile as
with a non-slip
low as
may be mounted
towards
(or
pads
you need to move
mounting
possible to minimize
horizontally.
the outside
textured
rubber
nothing at all)
surface
the Point
first rather than
the
If used
(see
below)
laminate
to keep them
Sevens
Using
Point Seven Reference
The
The low
(supplied)
four
augmentation
3dB bass
If, however,
response
but the
Point
the
subwoofer
Port
frequency responce of the Point Sevens
boost between 90Hz
you want the
below 100H2,
sound
Seven's
is
used,
Manual
Plugs
port plugs.
(i.e.
a
subwoofer),
most
then insert the plugs.
be tighter and very
will
plugs
should
the resulting sound
If they are used by
and 130H2 and
"accurate"
always be used.
then the
well damped.
ports should
sound
will have
can be
themselves,
result in
and are willing
This will
When used
If the
a bloated,
custom tailored
be left open.
".balanced"
a
give slightly
ports are left open
any outside bass
without
This will
sound.
to sacrifice
less apparmtbass
with a subwoofer,
unnatural midbass.
by using
give a
bass
and a
the
Page 12
Chapter
-
2
Speaker
lnstallation
Fnq
50Fh
Without
pon
lvith
port
Connections
Professional
to the amplifier.
banana plugs
About Wire:
use, most
unique story to
mance
approach
is
gauge multi-stranded
very well. This
with.
Before connecting
you get
help you
Some use
into one insulator
the result
is played. In
and a
of it created
at all, Alesis
based
sirnple; use
the + terminals
do this,
different-colored
will
black terminal;
100H2
grade
5-way gold-plated
This
type of cormector
and even
A lot of hype
the shortest
be loss of low frequency
most
spade lugs.
and confusion
by the wire
tell. While this
does not
on science
kind of
the speakers,
most speaker
to mark
cases, the speaker
subscribe
when recommmding
length
speaker
wire resembles
of the
wires
it. If one
these
should be
expensive wire
wire found at most
speakers
cable has a
posts
binding
can accommodate
exists
manufacturers
most
to
of the largest diameter
oversized
check that your amplifier
wired to the +
or insulation;
way to tell
speaker's polarity
response and
outputs
cortnected to
are provided
about the
themselves in an
will not hurt
of this hype
speaker
hi-fi and
lamp
cord and is very
terminals of the amplifier.
one conductor from
others mold
is out
stereo imaging
of the amplifier
the same-colored
for extemal
bare or tirmed
type of speaker
wire.
wire you
effort to have a
the speaker's perfor-
and chooses
electronics stores
is
recommendation
Our
can get. #12-14
tumed OFF. Be
a small line or
phase
of
with the
when the
will have a red
terminals of the
wiring
wires,
wires to
to take an
works
easy to work
sure
To
another.
marker
other,
system
terminal
Point Seven Reference
Manual
Page 13
Speaker Installation - Chapter 2
Point Seven. Consult the manual
Lr a
positive
If
"GND"
replugging. In
speaker.
To connect wires to the teminals
1. Strip about
2 Tum
3. Insert the wires into
4. Tighten the
Power
The
amplifier with a 100 watt power
Reference Amplifier, is recommended
an
tweeter than
Be sure to veri$ that your
amplifiers
failures caused
where an amplifier rated
danger of damaging
your
your
of
properly-phased
voltage on the red terminal, and push the driver forward.
you
are using a dual banana plug
marker
stranded, twist the strands
the
limit. As
insulation is caught inside
and
Point Sevens are rated
amplifier with too little power
are not and may fail
waranty.
system, a positive
molded on it so you
standard practice, the
(15
1/2"
mm) of insulation from
red
and black terminal
you
do, the hole
terminal caps
together at the end.
through the
the holes,
so that they hold the
the
Protection
to handle
a higher powered
by the use of an
the Point
anp delivering
amplifier
if overloaded.
beyond 200
Seven. To do
rating
inproperly-rated
power amplifier for specific information.
input to the amplifier should result in a
connector, one side of the plug usually has a
can keep
if you are not using a
observing
terminal, to avoid a loose
driven
is rated for 4
polarity
GND side connects to the black terminal of the
the ends of each wire. If
caps counter-clockwise
terminal
proper
50 watts
program
into four ohms, like
for most monitoring
into clipping is far more likely
a clean, undistorted
ohm speakers. Some
Alesis is not responsible
amplifier.Also,
watts should ever
so is asking for trouble and
straight after unplugging and
plug:
banana
the wire is
until they reach their
post
will be exposed.
polarity.
wire firmly. Make sure no
connection.
material. However,
Alesis
the
situations. This is because
be used because of the
there
RA-100
signal.
older
for any
is
to destoy a
gq
will void
an
situation
Alesis does not suggest
devices
cause failures
void the warranty. Actually,
and can additionally alter
studio monitor.
The
Alesis thanks you for
about
service.
think
Point
Seven Reference Manual
as fuses, lamps and/or
or require modifications
protection
best
this monitor system,
Please
against
take a minute
the use of any
many
the speaker's
speaker
choosing
our products.
this manual, your
now to fill
protection
extemal
thermal
breakers safe to use,
to the Point Seven's
such devices are generally
sound character,
failure is to mix at a reasonable
We value any comments you
Alesis dealer
your
out
warranty card
devices, but considers
long
so
construction which would
an undesirable
and about our factory
as they do not
considered ineffective
listening level.
and tell ur what
trait
may have
for
such
a
you
Page 14
CHAPTER 3
TnouBLEsHoorrNG
Troubleshooting lndex
If you experience problems while using the Point Sevens, please use the following
table to locate possible causes and
Support for assistance.
solutions before contacting Alesis Technical
Troubleshooting
-
Chapter 3
Unfocused sound, bass
frequencies muddy or
missing
Distorted output
Maintenance
Cleaning
The cabinet
Clean these surfaces when
water. To
to clean
mav leave small crumbs
Do not attempt
The
Scruice
Before
problem
be
corurection in
working properly to
Preserve
the cabinet with a
Point Sevens require
sending
isn't
caused by a defective amplifier, preamp,
Damaged
comDonents
surfaces of the Point Seven
to clean either
the Point Sevens in for
being caused by something
the system. Connect
necessary with a lint-free
the textured
check whether the monitors
finistu
(which
brush
in the texture).
of the drivers.
periodic
no
the Point Sevens to a
speaker
are covered with a
don't rub hard on the
may damage
maintenance.
repair, make
else in
cloth dampened in
the surface) or a sponge
sure
the system. Distortion or noise may
cable,
equalizer etc., or a loose
have malfunctioned.
Check + and
from power amp
speakers
Compare to comrnercial
of similar sWle: time to
lvlake
200W
Swap
problem
speaker; if
textured rubber laminate.
surface. Do not attempt
they
system that is known to be
-
cornections
to
nting
sure
crtum downlevd
isbelow
speakers to see if the
bllows the
so contact
warm soapy
(which
faulty
are
and that
CD
the
Point
Seven Reference Manual
Page 15
Chapter 9 Troubleshooting
Obtaining
Before contacting
the manual.
Customers
S-ALESIS
one of our
and instructions
COD shipments
For prompt
RO
will not be accepted.
in a
sturdy carton, with
kind without
caused by inadequate
Tape a note
number
phone
where you
you
back to
is
available
Field repairs
attempts by unqualified personnel
Service address for
Alesis Technical Support
3630 Holdrege Avenue
Los Angeles,
Repair
Alesis,
in the USA
and request
technicians;
on how
will not
service, indicate
please)
CFCs,
to the top
where
want the product retumed.
on any repair
for
a surcharge.
are not normally authorized
customers in the USA:
CA 90015
Seruice
check over all your
and Canada:
the Technical
if necessary,
retum
to
be accepted.
the RO number
you
If
do
shock-absorbing materials
"bubble-pack"
or
packing is
of the unit describing
Alesis can contact you
covered under the
connections,
If
problem persists,
the
Support deparknent.
you will be given
the unit. All
on the shipping label.
not have the
not covered by
the
if necessary, as well as instructions
Alesis will pay for
during the warranty period,
may invalidate the warranty.
a retum
units must be
packing,
original
such as
surrounding the unit.
Alesis
the
problem,
this
terms of
and
make sure
caII Alesis
Talk the problem
order
shipped prepaid
styrofoam pellets
warranty.
include
standard one-way shipping
warranty. Next day
you've
read
USA at 1-80G
over
(RO)
Units without
ship the NanoVerb
Shipping damage
your
name and a
and
with
number
and
(the
on
service
repair
an
Cuctomers outside the
Contact your local Alesis
Warranty applies only
outside of the
or may not be covered by an independmt distributor warranty
Do not retum products to
tions to do so.
USA and Canada are not covered by this Limited Warranty and may
and
USA
to
Canada:
distributor for any warranty assistance. The Alesis Limited
products
the
sold to users in the USA and Canada. Customers
factory
unless
you
have been
Point
in the country of sale.
given
specific instruc-
Seven Reference Manual
Page 16
Troubleshooting - Chapter 3
Sp=crFrcATlolus
Drivers:
Crossovet:
Frequency
Power Handling:
Nominal Impedance:
Sensitivity:
Cabinet:
Dimensions:
Weight
Response:
non-woven
5.25"
woofer,
magnetically shielded
1" ferrofluid
tweeter,
2.0kHz modified
Butterworth
85Hz-27WIz,+3
50 watts
watts
4
ohms
86 dB SPL
Rubber
with molded
7.1"W x
Ll lb. each
cooled silk dome
magnetically shielded
filter
program, 100
peak (using
@ L watt/
textured laminate
comer protectors
Il.2"H x 7.'25"D
carbon fiber coned
third order
dB
EIA-426A method)
L meter
over.625" MDF
Point
Seven Reference
Manual
Page 17
ALESIS
LIMITED
WARR/INTY
ALESIS
workmanship
This
_
within 14
_
charge any
representative. In all
number printed below to obtain a Return
retum the
authorized
and
some other
update
at anv time
by unauthorized
material or workmanship
AND FITNESSFORA
THIS LIMITED
the above limitation
so
DAMAGES RESUUTING
INCLUDING,
INCONVENIENCEORON
LAW
incidental or consequential
to state.
this
Without
servicerepresen-tativeinlhecountyofsale.
your local distributor.
CORPORATION
warranty
To be protected
During
To obtain warranty service,
properly packaged. Proof
fhis warranty
ANY IMPLIED WARTTANTTES,
IN NO EVENT WILL
This
This warranty only applies
warranty and any'obiigations
for a period
is
enfbrceable only liy the original retail purchaser.
by_ this warranty,
purchase.
davs of
ihe wirranty
product
that
for
unit
service.
returns must
positive proof
any
retumed for repair. ALESIS reserves the right to change or
unit
without
orior
does
personnel, and is limited to failures arising during
WARRANTY. Some
AMONG OTHERTHINGS,
DAMAGES FOR
warranty gives you specific
limiting the ioregding,
C'ALESIS)
(90)
ninety
of
period ALESIS
proves
cases disputes conceming this warranty
All inquiries must
be sent to ALESIS or an authorized ALESIS repair facility postage prepaid, insured
of
that the
notice.
not cover claims for damage due to abuse,
in
the
PARIICULARPURPO6E, ARE LIMITED IN
may not apply to
ALESIS BE LIABLE FOR INCIDENTAL,
FROM THE BREACH OF ANY
LOSSOF USE OFTHE
PERSONAL INIIIRY. Some
damages, so the above
days for parts
purchaser
the
to be defective on inspection
the
to
repairs under
shall, at its sole and absolute
purchaser
purchase must
product is within
product.
INCLUDING IMPLIED WARRANTIES OF
states
you.
legal rights, and
products
Alesis under this
bf
Los Angeles, Califomia
warrants
Authorization Number and instructions
be accompanied by a description of the problem. All