PACKAGING ……………………………………………………………..4
CONTROLS AND CONNECTIONS………………………………..…..5
OPERATION….…………………………………………………………..7
EXPLODED VIEW………………………………………….……..…..…8
TEST SET UP AND PROCEDURE............................................……9
BLOCK DIAGRAM…………………………………………………..…..10
TROUBLESHOOTING FLOW CHART…………………..………..….11
ELECTRICAL PARTS LIST (120v) …………….………………….….12
PCB DRAWINGS……………….………………….……………………18
SEMICONDUCTOR PINOUTS……………….….……..……….……..22
SCHEMATICS (120v)……………………………....………..………...23
Basic Specifications
Cascade Model Twelve P o wered Subwoofer
Frequency Response 32Hz – 150Hz (–3dB)
28Hz – 150Hz (–6dB)
Maximum Amplifier Output 300 watts RMS (20Hz – 150Hz, no more than 0.1% THD)
Crossover Frequencies 50Hz – 150Hz, continuously variable or LFE
Drivers 10" (250mm) MMD®,
Dual 10" (250mm) MMD passive ra diators
Dimensions (H x W x D) 20" x 15 " x 13-7/8" (508mm x 381mm x 352mm)
Weight 42 lb (19kg)
Infinit y cont inually strives to update and im pr ove existing products, as well as cr eate new ones. The specifications and
construction detail s i n this and related Infinity publ ications are therefore subject to change without notice.
o
e
t
s
n
y
e
e
s
)
)
)
t
r
r
)
l
n
Model Twelve Cascade
2
Cascade Model Twelve subwoofer 300 W Powered Sub/ Plate Amp
LINE VOLTAGEYes/N
ParameterSpecificationUnit
Amp Sectio
Type (Class AB, D, other)D--Load Impedance (speaker)4OhmsNominalZ-curve required
Rated Output Power300WattsRegulated 120 V line
THD@ Rated Power1%22k filter, 50Hz300W
THD @ 1 Watt0.5%22k filter, 50Hz
DC OffsetundefinedmV-DC< 20@ Speaker Outputs
Damping factor20N/A> 15measured at 50 Hz
Input Sensitivit
Signal to Nois
SNR-A-Weighted100dBArelative to rated powerA-Weighting filter
SNR-unweighted70dBrrelative to rated power22k filter
SNR rel. 1W-unweighted60dBrrelative to 1W Output22k filter
Residual Noise Floor2mVrmsVolume @max, using RMS reading DMM/VOM (or A/P)
Residual Noise Floor1
Input Impedanc
Active Filter
Low Pass (fixed or variable
High Pass (HPF
Line Out (BUFFERED
NA 120vac/60HzYes108-132120VrmsNormal Operation
EU 230vac/50-60HzYes207-264230VrmsNormal operation, MOMS required
THD at Max. Output Powerless than 2%Maximum Output PowerMaximum THD as a result of limiting.
Output Level Contro
Volume Control PotYES--gain control mounted on amp panel
Input/Output Configuratio
Line InStereo--RCA phono jack, gold plated
LFE InYES--Shared with "R" Line In jack
Line Outputs (L,R)YES-- Buffered all-pass line level L & R
Frequency60Hznotch filter
Slope6dB/Octave
Typerocker--Located on amp plateTV-5
Typemini togle--Located on amp plate
Type----
Typemini togle --Located on amp plate
Taper (lin/log) log A taper--
@ minimum settingno output
FIXED--
Q2.5 --
RABOS--
YEScompressor and limiter
)
s
s
y
n
Model Twelve Cascade
3
QA Test
ParameterSpecificationUnit
Signal Sensing (ATO
Auto-Turn-On (yes/no)YES-ATO Input Test Frequency100Hz
ATO Input Threshold1mVtyp.LPF "On", BOS "Off"
ATO Low Pass cutoff1kHz450ATO-LPF for noise immunityLPF "On", BOS "Off"
ATO Turn-on time2s10Amp connected and AC on, then input signal applied ( 1 W output )
Auto Mute / Turn-OFF Time10minutes 5 < t < 15 Time before muting, after signal is removed
Power on Feature
Power on Delay timegreater than 2sec.AC Power Applied
Power on LEDYES--Bi-color LED located on front of cabinet
Normal On/Off green / redcolorATO mode only
ATO--color"Active": green; "Standby": red
Transients/Pop
ATO Transient5mV-peak@ Speaker Outputs
Turn-on Transient30mV-peak@ Speaker OutputsAC Line cycled from OFF to ON
Turn-off Transient30mV-peak@ Speaker OutputsAC Line cycled from ON to OFF
Limits
ConditionsNotes
Efficienc
Stand-by Input Power10Watts
AC Power Cons.@1W12Watts
Power Cons.@rated power473Watts
Efficiency63%
Protectio
Short Circuit Protection YES--Direct short at output
Thermal Protection YES-- threshold ~ 65 deg. C at panel
DC Offset ProtectionYES-Line Fuse Rating ( 120 V )3.15AmpsType ADL or MDL Fuse holder on inside surface of amp panel
typ.
typ.
typ.
typ.
@ nom. line voltage
@ nom. line voltage
@ nom. line voltageInput power measured is REAL Watts, not VA
@ nom. line voltage
DC present at Speaker Out leads Relay for driver/fire protection
4
Model Twelve Cascade
Line In
Line Out
150
Max
Level
Crossover
[Hz]
50
Min
LFE
I
nput
Phase
N
ormal
Off
On
LFE
G
reen: On
Red: Standby
Model Twelve
Power
0
1
2
3
4
5
6
7
8
B
A
9
Model Twelve Cascade
5
CONTROLS AND CONNECTIONS
Rear Panel
¡
Power Switch
™
Line-Level Outputs
£
Line-Level Inputs
¢
Power Indicator
∞
Crossover Adjustment
§
Subwoofer Level (Volume) Control
¶
Normal/LFE Selector
•
Phase Switch
Bass Optimization Controls (see page 5)
ª
Bass Optimization System Selector
‚
Center-Frequency Adjustment
⁄
Bass Optimization System Level Adjustment
¤
Bass Optimization System Bandwidth Adjustment
Cascade Model Twelve
SUBWOOFER OR
L
FE OUTPUT
Line In
Line Out
150
Max
Level
C
rossover
[Hz]
50
Min
LFE
Input
P
hase
N
ormal
O
ff
O
n
LFE
G
reen:On
Red:Standby
Model Twelve
L
ine In
L
ine Out
150
Max
Level
C
rossover
[
Hz]
50
Min
L
FE
Input
P
hase
Normal
O
ff
O
n
LFE
Green:On
Red:Standby
M
odel Twelve
SUBWOOFER OR
LFE OUTPUT
L
ine In
Line Out
LFE
Input
G
reen:On
R
ed: Standby
Model Twelve
L
ine In
Line Out
LFE
Input
G
reen:On
R
ed: Standby
Model Twelve
Line In
Line Out
L
FE
Input
Green:On
Red: Standby
Model Twelve
Line In
Line Out
L
FE
Input
Green:On
Red: Standby
Model Twelve
OR
Model Twelve Cascade
6
CONNECTIONS
If you have a Dolby* Digital or DTS®receiver/processor
with a low-frequency-effects (LFE) output:
• Set Normal/LFE Switch to LFE.
NOTE: In this case, you do not need to use a Y connector.Simply
connect the LFE output on your receiver/processor to either the
left or right input on the subwoofer.
If your receiver/processor has subwoofer
outputs for the left and right channels:
• Set Normal/LFE Switch to Normal.
NOTE: Some receivers have a single subwoofer output (do not
confuse this with a single LFE output as described to the left).
In that case, it is recommended that you use a Y connector (not
included) to maximize performance.
The Cascade Model Twelve also
includes a set of line outputs.These
outputs allow you to “daisy-chain”
one Model Twelve to multiple Model
Twelve subwoofers.Simply connect
the first subwoofer as described
above and then run a subwoofer
cable from the line output(s) to the
line input(s) on the next sub.
NOTE:This line output is before the
R.A.B.O.S.circuit. Each subwoofer’s
R.A.B.O.S.controls must be
individually adjusted during the
R.A.B.O.S.setup.
Cascade Model Twelve
Model Twelve Cascade
7
OPERATION
Power On
Plug your subwoofer’s AC cord into a wall outlet.Do not use the
outlets on the back of the receiver.
§
¡
to the
on the
Initially set the Subwoofer Level (Volume) Control
“min”position.
Turn on your sub by pressing the Power Switch
rear panel.
Auto On/Standby
With the Power Switch ¡in the ON position, the Power
Indicator LED ¢will remain backlit in red or green to
indicate the On/Standby mode of the subwoofer.
RED = STANDBY (No signal detected,Amp Off)
GREEN = ON (Signal detected,Amp On)
The subwoofer will automatically enter the Standby mode after
approximately 10 minutes when no signal is detected from your
system.The subwoofer will then power ON instantly when a
signal is detected. During periods of normal use, the Power
¡
Switch
for extended periods of nonoperation,e.g., when you are away
on vacation.
can be left on.You may turn off the Power Switch
¡
Adjust Gain
Turn on your entire audio system and start a CD or movie
soundtrack at a moderate level.Turn up the Subwoofer Level
§
(Volume) Control
the subwoofer, check the AC-line cord and input cables. Are the
connectors on the cables making proper contact? Is the AC
plug connected to a “live”receptacle? Has the Power Switch
been pressed to the “On”position? Once you have confirmed that
the subwoofer is active,proceed by playing a CD,record or
cassette. Use a selection that has ample bass information.
about half way.If no sound emanates from
¡
Crossover Adjustments
NOTE: This control will have no effect if the Normal/LFE Selector
¶ is set to “LFE.”If you have a Dolby Digital or DTS
Switch
processor/receiver,the Crossover Frequency is set by the
processor/receiver.Consult your owner’s manual to learn how
to view or change this setting.
∞
The Crossover Adjustment Control
frequency at which the subwoofer reproduces sounds.If your main
speakers can comfortably reproduce some low-frequency sounds,
set this control to a lower frequency setting,between 50Hz
and 100Hz.This will concentrate the subwoofer’s efforts on the
ultradeep bass sounds required by today’s films and music. If you
are using smaller bookshelf speakers that do not extend to the
lower bass frequencies,set the Crossover Adjustment Control to
a higher setting,between 120Hz and 150Hz.
determines the highest
Phase Control
The Phase Switch • determines whether the subwoofer
speaker’s piston-like action moves in and out with the main
speakers,0,˚ or opposite the main speakers, 180˚. Proper phase
adjustment depends on several variables such as room size,
subwoofer placement and listener position.Adjust the phase
switch to maximize bass output at the listening position.
Set the overall volume control of the preamplifier or stereo to a
comfortable level. Adjust the Subwoofer Level (Volume) Control
until you obtain a pleasing blend of bass.Bass response should
not overpower the room but rather be adjusted so there is a
harmonious blend across the entire musical range. Many users
have a tendency to set the subwoofer volume too loud,
adhering to the belief that a subwoofer is there to produce lots
of bass.This is not entirely true.A subwoofer is there to enhance
bass, extending the response of the entire system so the bass
can be felt as well as heard.However, overall balance must
be maintained or the music will not sound natural. An
experienced listener will set the volume of the subwoofer so
its impact on bass response is always there but never obtrusive.
§
Cascade Model Twelve
Model Twelve Cascade
8
Model Twelve Cascade
9
Cascade Model Twelve TEST PROCEDURE
The operation of t he Cascade Model Twelve subwoofer, and the proper settings for the Room Adaptive Bass Optimization
System, or R.A.B.O.S., is thoroughly covered in the Owner’s guide, part# 406-000-05338-E.
For service pur poses, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully CW
(Clockwise), or if t he R.A.B.O.S. On/Off switch is OFF. The only other control of conc er n is the M ain Level Control on the
front panel, which operates like a traditional potentiometer.
Equipment needed:
• Function/signal generator/sweep generator
• Integrated Amplifier
• Multimeter
• RCA cables; Speaker cables
General Unit Function (UUT = Unit Under Test)
Switch/Controls:
MAIN LEVEL control full Counterclockwise (Min)
CROSSOVER (Hz) Full Clockwise (150 )
R.A.B.O.S. On/ Off switch OFF
PHASE switch - either position
(3) R.A.B.O. S. co ntr ol s – do no t mat ter
1) From the signal generator, connect one line level (RCA) cable to the Line In jacks (L/R) on the UUT. Use a Ycable from a mono source if necessary to connect to both inputs.
2) Turn on gener ator ; adjus t to 150mV, 50 Hz.
3) Plug AC power cord in UUT, turn power switch ON.
4) LED should be ON (faceplate). Turn up LEVEL control to full Clockwise (Max).
5) LED should be Gre en ; Bass res p onse s ho uld be heard and felt from wo o fer at bo ttom of cabinet.
6) Turn LEVEL control full Counterclockwise (Min). Turn power switch OFF.
Sweep Function
1) Follow steps 1-5 above, using a sweep generator as a signal source – adjust the generator to 100mV, 50 Hz.
2) Sweep generator from 20Hz to 300Hz. Listen for any rattles, clicks, buzzes or any other noises. If any unusual
noises are heard, test woofer according to the instructions below.
Driver Function
1) Remove woofer from the enclosure. Check DC resistance of woofer; it should be 3.4Ω ±10%,
2) Connect a pair of speaker cables to woofer terminals. Cables should be connected to an integrated amplifier
fed by a signal generator. Turn on generator and adjust so that speaker level output is 6.0V.
3) Sweep gener a tor fr om 20H z to 1k Hz . Li sten to driver for any rubbin g, buzzing, or other unusual noises.
Loading...
+ 23 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.