STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_29-0611)
with
TWIN A-V
FILTER CURVES
Installation and Operation Instructions
by
Russell
Storey
FEATURES
OVERVIEW
Thank
you for purchasing the 200 Watt
Subwoofer Amplifier. Ideal for building subwoofer projects for audio and home
theatre systems, this amp includes both high and low level inputs, phase switch,
auto on/off (activated by input
signal), and a handy control that
adjusts the volume level and special
( Audio and Video ) switch
selector that enables the
electronic twin low pass filters to
vary the low pass cut off slope and
frequency . When
switch to
Audio ( used for Music Bluray DVD
2 channel systems ) the sub
amplifier goes flat to 5HZ .With the switch set to
Video position there is a
filter at 35 HZ
to reduce subwoofer cone
excursion in the
0 to 17
Hz region but this in conjunction with the frequency control
still enables excellent Home theatre LFE
effects and tight bass
The amplifier sums the right and left
stereo inputs to a mono output, so that only one amp is required per system.
It also features a 6dB high pass filter (125Hz, 8ohm) output for
satellite speakers if need be .
The amp has thermal, overload and fuse protection for
years of reliable use.
Contact me by
phone if you have any questions regarding set up or usage and I will be happy to
assist
Russell Storey
ph
02 66 793059
STONES SOUND STUDIO (
Australia )
STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_18-0311)
CONTROLS
RECOMMENDED SETTINGS
POWER
and POWER SWITCH
(OFF
/ AUTO /ON/)
When
the power switch is in the auto on position, the amplifier will automatically
turn on when a signal is present.
Note: In auto on/off mode
Russell‘s
Tip 1
A/ I
recommend leave the (OFF / AUTO
/ON/) switch in the (ON) position and turn the subwoofer power
on and off at the wall outlet when not
in use. Don’t leave the
subwoofer or equipment on then go out..
This
prevents premature power on off glitches
and wear and tear on the subwoofer unit .
B
/ Power 240 V to System
If running on
240V generator
or Solar power or using Grid
power
in rural areas always
disconnect the mains power plugs
at the wall socket or
power outlet when not using
the subwoofer or
your Home Theatre TV
sound system
. This will prevent damage to the
equipments from power brown outs voltage surges lightning and storm damage.
VOLUME ( LEVEL)
CONTROL
Adjusts
the output level of the amplifier.
Russell‘s
Tip 1:
VOLUME LEVEL
###
Warning ####
Don’t set
the volume
past ( ½ way
with the Level Control
)
this amp is
a deceivingly power full
amplifier
and
can and will damage some subwoofer drivers
. If you don’t have enough level from
the sub amp it’s the HT amplifier
or integrated amplifier line
signal level
out is not high enough to drive
the STONES 400 Watt
Subwoofer Amplifier set the levels
in the HT Menu >> see below .
# For best
sound quality I recommend run with the
High level speaker inputs to the sub amplifier.
See Instructions >
below
.
Russell‘s
Tip 2:
VOLUME (LEVEL) LEVEL
###
Warning,
Warning ##
With
home theatre movies & sound effects levels are recorded all over the
place on DVD & Blu ray it is possible to blow up a subwoofer
speaker If you have the volume or freq set
to high on some movies ..... Or music BluRay DVD CD
I recommend leave the Volume Level
settings at 11 o'clock Level until you
get the feel of the Subwoofer movies over a period of a few weeks.
Pre set your HT receiver Menu SUB
level Low compared to all the other
channels LRC to begin with .
If you have a DTS and Dolby
LFE effects level setting in the HT
menu set this to max.
Remember to turn the Subwoofer on in the
Speaker Settings .. Some HT
receivers auto turn the SUB
off after powering
on /
off
If you go down to the other end of the house you will realise how loud the low
frequencies are
STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_18-0311)
FREQUENCY CONTROL
TWIN A-V
FILTER CURVES
Continuously
variable from 15Hz to 150Hz at 24 dB/Octave LF and 12db HF
Russell‘s
Tip 2:
Set
the Frequency control
to (50HZ)
9 0’clock and leave it there
always...
Some types of music may need
¼ of a turn more but always reset the
control to 50HZ)
9 0’clock after use
##
However based on my experience I recommend setting the Frequency Control to
(50HZ)
this will enable the best quality bass on any kind of
music
and HT sound Effects.
Setting the
Frequency Control to
(50HZ) also reduces room modes
(bass boom) in most room shapes and tighten the bass
Setting the
Frequency Control
past 12 o’clock position
will
create room
modes (bass boom) in most room shapes and create
a honky hollow sound
PHASE SWITCH
Selectable between
0° and 180°. This will aid in subwoofer room placement.
Russell‘s Tip 3:
PHASE
The
correct position will be the one that provides the most apparent loudest bass
output level and provides fast tight bass.
Set
Phase switch to
reverse ( 180°)
Normal
##
In the Home theater Receiver Menu
Turn OFF
( Centre and Rear Effect speakers )
and set
up the Subwoofer
with front left and right
speakers .. ONLY
Then Play back
a CD or DVD
with a fast tight
bass guitar and switch the phase switch
back and forth whilst listening to the music at your normal listening position
Get a friend
to switch the phase switch for you whilst listening at your normal position
(lounge chair) or can sit on
top of the subwoofer box and switch it yourself whilst looking at the Front
speaker with grills off you will see the speaker cones in sync and the sound
quality improve in one or the other phase switch position
STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_18-0311)
HUM & NOISE
( Home
theatre or 2 channel Amplifier)
As we have a mixture of different earth points around the house via TV antennas , satellite dishes , Ausat , set top boxes etc and combine this with use of 2 pin ( no earth) and 3pin (earth ) equipment in our systems , some times a low or high level 50 hz hum comes out through the subwoofer or main L&R speakers .
SOLIUTION
:
Locating what is creating the (
earth loops
) or
hum in your sound system
can be very time consuming
frustrating expensive
and time consuming for expert
technicians with a pathora of recommended techniques and gadgets
On my own Home Theatre
Sound System I hook up
All
my equipment
( TV , Satellite, Home theatre amplifier,
DVD , Blu ray CD player, computer
, etc (
via one
protected
multi
power outlet board ) from a
single 240V power outlet socket
on the wall .
Between
the 240V wall socket
and the
protected multi
power outlet board .
I insert
in series a
240V to 240V
250 Watt
Isolation Transformer
.Bingo this works .
Also another benefit is
you only have one switch on the wall to
turn off all the equipment after
use and if there is a bad storm or
lightning about
you can quickly pull the plug out of the wall to protect all your
equipments in one go.
SUBWOOFER
(
Room location and Subwoofer height above floor
)
Russell‘s Tip 4:
Subwoofer
needs to
be 450 mm
out from the rear and
adjacent side walls
to enable tight bass .
Always Keep the
subwoofer away from the corner of a
room , the corner of the room will
increase the bass but cause
poor quality bass and bass
Boom ( LF
room modes)!!
As , Experiment
with Sub
height above floor < forget the feet on the box
>> try
sit sub box up on top of 60
to 70 mm thick phone book , this
will tighten the bass and reduce room modes and boom
dramatically !!
Can make a DIY centre stand for the subwoofer
, inside cavity fill
it with lead and fit with
12mm rubber on the base?
STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_18-0311)
STONES
Recommended HT
and Subwoofer Room location
V2
2010
STONES
S200W-V2 200W
Subwoofer Amplifier
V2
2010
(V2_18-0311)
Input/Outputs
Line-in:
These
are line level RCA inputs. Use to
connect from the Home Theatre
(Sub out) RCA line out OR pre-amplifier
outputs.
Russell ‘s
Tip :
Use an RCA ( Y )
lead to connect both the Left and Right Channel
inputs together
this gives a 6db level boost
to the input of the subwoofer
amplifier . Cable can be up to 5M
long
Line-out:
This line
level RCA output provides a full range (20-20kHz) output and is used to connect
“daisy chain” the line level signal to other amplifiers.
Note:
Line out is only active when a signal is present at the line-in input.
STONES
S200W-V2 Watt Subwoofer Amplifier
with Remote Control
V2
2010
High-level In:
Wiring Diagram Options
Speaker
level input. Input connects
directly to receiver via speaker cables.
Russell‘s
Tip:
Use high level inputs to achieve the best bass transit and quality for
music based systems
High-level
Out:
SUBWOOFER SPEAKER CONNECTIONS:
Connect the
black lead to the negative (-) terminal of the speaker.
Connect the red lead to the positive (+) terminal of the speaker.
Russell ‘s
Tip :
Solder speaker
leads to Subwoofer
Speaker as this enables most
reliable connection compared to
push on connectors which can vibrate loose with very low frequency inside
the cabinet.
SUB
AMPLIFIER SPEAKER LOAD
(2 4
or 8 ohm)
Russell‘s
Tip :
Subwoofer Speaker Impedance
(DC or AC)
Some
Makes /Brands of
subwoofer drivers ( specified at 4 Ohms Nominal
)
voice coil resistance can and does go
below 2ohms ( DC
or AC
) especially
“ dual voice” coil types (OR ) when
2 x subwoofer drivers are
wired in parallel .
The subwoofer driver and
configuration of wiring above
need a special amplifier that will drive 2 ohm loads.
# The STONES
400 Watt Subwoofer Amplifier
is designed to operate with 4 to 8 ohms Nominal speaker loads
STONES
S200W-V2 Subwoofer Amplifier
with Remote Control
V2
2010
SUBWOOFER AMPLIFIER
( Cut-out Hole
and screw size)
Russell‘s
Tip:
Some amplifier
modules vary in hole cut out size
Measure
amplifier sealing edge, example say its
17mm wide (subtract this from the outside Height &Depth)
to get the hole cut out size
. Cut a sample hole in a piece of scrap timber to test best fit. Before
you cut the hole in the sub box and say Opphs!!!!!!!!!!
Wrong size
I recommend
rebating sub enclosure with a router so the amplifier plate sits flush with the
cabinet this provides a better look and seal.
.
Allen Screws
supplied with the amplifier require a
2mm pilot hole.
#User Option
Use of long chipboard screws to
secure the Amplifier to the subwoofer enclosure will minimize Air leaks around
gasket
SUBWOOFER AMPLIFIER
SPECIFICATIONS
Rated Power Output:
200 Watts
#
STONES
S200W-V2 Subwoofer Amplifier
# is designed to operate with 4
to 8 ohms Nominal speaker loads
Signal to
Noise Ratio:
95 dB
Amplifier
Dimensions:
250 x 250 mm
Amplifier Cut-out:
#
233 x
233 mm
Weight:
5.5 Kg Voltage:
240 V ac
ARTISAN R1000
SUBWOFER & SUBWOOFER KIT