Bose 402 C User manual

1
BOSE®
402TM C/802®C II
SYSTEM
CONTROLLERS
OWNER’S GUIDE

2
WARNING
To reduce the risk of fire or electrical shock, do not
expose this system to rain or moisture.
CAutIoN
To reduce the risk of electrical shock, do not
remove the cover of the 402TMC or 802®C II
systems controllers. There are no user-serviceable
parts inside. Refer servicing to qualified service
personnel. The caution markings described here
are located on the top cover of the 402C and 802C
II systems controllers.
The lightning flash, with arrowhead
symbol within an equilateral triangle,
is intended to alert the user to the
presence of uninsulated “dangerous voltage” within
the system enclosure that may be of sufficient
magnitude to constitute a risk of
electrical shock.
The exclamation point within an
equilateral triangle, as marked on
the system, is intended to alert the
user to the presence of important operating and
maintenance instructions in this owner’s guide.
WARNING
The Bose®402C and 802C II systems controllers are
electrical appliances. There are no user-serviceable
parts inside. As with all electrical appliances,
dangerous electrical shock may result if repair
is attempted by unqualified personnel. Service
and the installation of any optional electronics
should always be performed by Bose-authorized
personnel.
Contents
1.0 Before You Begin ........................................... 3
2.0 Safety Information .......................................... 3
3.0 Introducing The Controllers............................ 4
4.0 Sound System Configurations........................ 4
4.1 Basic Configurations ............................ 4
4.2 Configurations Including An
Acoustic Wave®CannonTM
System II Loudspeaker ........................ 5
5.0 General Operating Instructions...................... 9
5.1 Unpacking............................................ 9
5.2 Controller Parts..................................... 9
5.3 Input Connections .............................. 11
5.4 Output Connections ........................... 12
5.5 Mechanical Connections.................... 13
5.6 Basic Operation ................................. 13
Appendices
Appendix A: Installing The OC-1 Option Card...... 16
A.1 Installing The Internal
Protection Circuit Harness.................. 16
A.2 Connecting The OC-1 To The
Systems Controller ............................. 18
A.3 Installing The Systems Controller And
External Protection Circuit Harness.... 19
Appendix B: Specifications................................... 20
B.1 Electrical Specifications
And Controls....................................... 20
B.2 Mechanical Specifications ................. 20
B.3 Controller Accessories ....................... 20
Appendix C: Warranty And Service ...................... 21
C.1 Warranty Period.................................. 21
C.2 Service ............................................... 21
C.3 Contacting Bose Corporation............. 21

3
1.0 BeforeYou
Begin
Thank you for purchasing the Bose®402TMC or 802®C
II systems controller.
In this owner’s guide, sections two and three list
safety, general descriptions, and main features for
both controllers. Section four shows examples of
complete systems in some typical applications. The
remaining section describes basic controller hook-
up. It also gives general electrical and operating
instructions.
See Appendix A for how to install the Acoustic Wave®
CannonTM System II speaker option card (OC-1). It is
important that the OC-1 be installed by authorized
Bose personnel. Appendix B gives the electrical and
mechanical specifications of the 402C and 802C II
systems controllers. Appendix C gives warranty and
service information.
2.0 Safety
Information
Please read this safety information before you
install, connect, or operate the Bose 402C or 802C II
systems controllers.
2.1 Read the instructions. Read and then keep all
safety and operating instructions for future reference.
2.2 Follow cautions. For your safety, follow all
cautions and warnings in the Owner’s Guide and on
the controller.
2.3 Avoid moisture. Never expose the controller
to water or excessive humidity. Do not install near
swimming pools, spas, or in other very humid
environments.
2.4 Avoid heat. Do not use the controller near
excessive heat sources. These include radiators,
heat registers, flood lamps, spotlights, stoves, and
other appliances.
2.5 Protect cables. Always route cables to keep
them from being pinched or cut by heavy or sharp
objects.
2.6 Connect the ground wire. Make sure you
properly connect the ground pin (if included) on
the power cord of the controller. It connects to the
ground of the power mains.
2.7 Vent the system. Properly vent the controller
if you mount it in a rack with other electronic
equipment. Vent the rear of the rack to prevent
excessive heat build-up.
2.8 If damage occurs. Refer servicing to qualified
service personnel under the following conditions:
A. If liquid spills into the unit.
B. If the unit is exposed to rain or water.
C. If the unit does not operate normally, even
though you have followed the instructions in this
manual.
D. If the unit exhibits a distinct change in
performance.
2.9 Check for safety. Following service or repairs,
ask the service technician to perform safety checks.
This includes proper connection of the ground wire
from the controller to the power mains.

4
3.0 Introducing
The Controllers
Bose®402TM C and 802®C II systems controllers
(Figure 1) provide the equalization and crossover
electronics necessary to complete any sound
reinforcement system which includes the Bose 402,
402W, 802, or 802W loudspeakers. Each controller
has a Mode Switch to accommodate various full-
range or bi-amplified sound system configurations.
The 1U 19” rack-mount chassis of each controller
contains dual-channel signal processing electronics
with 18 dB/octave crossover and active equalization
circuitry. These work with the 402 and 802
loudspeakers as well as in bi-amplified systems with
the PanarayTM 502TMB Acoustimass®bass enclosure
or the 502BP portable Acoustimass bass enclosure.
Both controllers have -10/+4 dB input sensitivity
switches, and balanced XLR inputs and outputs.
They also have -18/+3 dB bass level control, plus
bass Mono Sum and Mode switches.
Authorized Bose personnel can install the separate
OC-1 option card in the 402C, 802C II, or 502C
(Panaray) systems controllers. The OC-1 option
card allows a system to be configured with the
Acoustic Wave®CannonTM System II loudspeaker as
the bass rather than the 502B or 502BP enclosures.
4.0 Sound System
Configurations
4.1 Basic Configurations
The 402TMC and 802®C II systems controllers
offer a flexible building-block approach to sound
system design. Please review the sample system
configurations shown in Figures 2 through 8. They
can help you get started with your system design.
Note: For bi-amplified systems using a 502 TMB,
502BP, or Acoustic Wave ®CannonTM System II
loudspeaker for bass reinforcement, you will need a
channel of amplification in addition to that supplying
power to the 402 or 802 loudspeakers. This can
be: (A) a single mono amplifier, (B) one side of
a dual-channel amplifier, or (C) a dual-channel
amplifier in bridged mono mode (if the amplifier has
this). Always consult the amplifier manufacturer’s
specifications to ensure that the output power
matches that of the recommended range for the
loudspeakers in the system — see Appendix B.
Figure 1
The 402C systems controller (left) and the 802C II systems controller.

5
Figure 2
402 (or 402W) full-range system.
L
R
From
pre-
amplifier
High
frequency
output
R
L
L
R
Amplifier
402 (L)
loudspeaker
402 (R)
loudspeaker
4.2 Configurations Including The
Acoustic Wave®CannonTM
System II Loudspeaker
Follow these steps when you install a bi-amplified
system that includes the AWCS II loudspeaker for
bass.
1. Have authorized Bose®personnel install the OC-
1 option card in the controller.
CAUTION: Make sure that the installer carefully
follows all instructions for the OC-1 option card.
These instructions are included with both the OC-
1 option card and in Appendix A of this Owner’s
Guide.
2. Set the MODE switch on the controller’s rear
panel to OPT 4.
3. Connect the LOW FREQ OUTPUT(s) to
each amplifier channel driving the AWCS II
loudspeaker(s). Use only the Channel 1 (left-
hand) LF output for systems with mono bass. In
this configuration, the OUTPUT MODE switch
should be set to SUM.
4. Each amplifier channel driving an AWCS II
loudspeaker also requires a protection circuit
(the protection circuit wiring harness is included
with the OC-1 option card). Connect this circuit
from the amplifier’s loudspeaker terminals to
the protection circuit input connector on the
controller rear panel.
CAUTION: Even with the protection circuit, you must
make sure that the RMS power going to each AWCS
II loudspeaker does not exceed its recommended
amplifier range. If other amplifier channels will drive
additional AWCS II loudspeakers, make sure the
gain settings and loads on all amplifiers are the
same.

6
From
pre-
amplifier
L
R
High
frequency
output
L
R
402C controller
L
R
Figure 3
402TM (or 402W) bi-amplified system with 502TMB (or 502BP) Acoustimass®bass enclosure.
Figure 4
Amplifier
Amplifier
402 (or 402W) bi-amplified systems with Acoustic Wave®CannonTM System II (AWCS II) loudspeaker.
Figure 6
Protection
circuit
input
From
pre-
amplifier
L
R
Protection loop
402C controller Amplifier
High
frequency
output
L
R
Amplifier
402 (R)
loudspeaker
402 (L)
loudspeaker
L
R
AWCS II loudspeaker
402 (L)
loudspeaker
402 (R)
loudspeaker
502B
bass enclosure
Low frequency output
Low frequency
output

7
Figure 5
802®(or 802W) full-range system.
L
R
802C II controller
High
frequency
output
L
R
Amplifier
From
pre-
amplifier
802 (or 802W) bi-amplified system with 502TMB (or 502BP) Acoustimass®bass enclosure.
Figure 7
L
R
From
pre-amplifier
802C II controller
High
frequency
output
L
Low frequency output
Amplifier
Amplifier
R
L
R
802 (R)
loudspeaker
802 (L)
loudspeaker
502B bass
enclosure
802 (R)
loudspeaker
802 (L)
loudspeaker

8
L
R
802®(or 802W) bi-amplified systems with the Acoustic Wave®CannonTM System II loudspeaker.
Figure 8
High-SPL bi-amplified system with four 802 (or 802W) speakers and two 502TMB (or 502BP) Acoustimass®bass
High
frequency
output
L
R
L
From
pre-
amplifier R
Protection
circuit
input
Protection loop
Low frequency output
802C II controller Amplifier
AWCS II loudspeaker
Amplifier
802 (R)
loudspeaker
802 (L)
loudspeaker
enclosures.
L
R
L
R
802C II controller
High frequency
amplifier one
802 II
802 II
High frequency
amplifier two
502B bass
enclosures
Bass amplifier
From
pre-
amplifier

9
5.0 General
Operating
Instructions
5.1 Unpacking
Unpack the systems controller carefully. Save all
packing materials in case you ever want to ship the
controller back to Bose or an authorized Service
Center. If any part looks damaged, do not use the
controller. Repack it in its carton and notify Bose®
Service or your authorized Bose Professional
Products dealer immediately.
5.2 Controller Parts
Figures 9 and 10 identify main parts of the 402TMC
and 802®C II systems controllers.
A. Front panel: 1U (1 3/4”) standard height with
two mounting holes on each end.
B. Power switch: O/I (OFF/ON) mains switch.
When it turns on, the signal mutes for one
second before flowing from controller to
amplifier. When it turns off, a relay circuit
immediately mutes the signal for on/off pop
protection.
C. Pilot LED: Lights to show power switch is on and
power is supplied.
Figure 9
Front panels of the 402C and 802C II systems controllers.
A B C

10
Figure 10
Rear panel of both the 402TMC and 802®C II systems controllers.
L F GD
E J I
H
M
K
D. Two INPUT jacks: Two channels, balanced, 2 kΩ
minimum input impedance.
E. Two INPUT LEVEL switches: One for each input
channel. Switches between -10 dB and +4 dB
sensitivity. (For specifications see Appendix B.)
F. MODE switch: Selects one of the three controller
operating modes (position 3, marked “NC” is not
used).
G. Two HIGH FREQ OUTPUT jacks: Two high
frequency output channels, balanced, low
impedance. These supply full bandwidth signals
to the amplifier(s) when the controller is in Full
Range mode.
H. Two LOW FREQ OUTPUT jacks: Two low
frequency channels, balanced, low impedance.
Signal is available at Channel 1 LF output only
when in Bass Mono Sum.
I. OUTPUT MODE switch: Choose the SUM
setting to combine the bass portion of the
signals from the two INPUT jacks (which are
usually stereo left and right). The controller
sends that combined signal to the first channel
CH 1/SUM jack of the LOW FREQ OUTPUTs.
J. LOW FREQ LEVEL control: Adjusts the level of
the signal from the LOW FREQ OUTPUT jacks.
You can choose any setting between -18 dB and
+3 dB.
K. AC cord jack: Connects to mains power outlet.
L. Protection circuit punch out: Works only
with an Acoustic Wave®CannonTM System
II loudspeaker. This plug comes out when
installing the OC-1 option card for systems that
use the AWCS II loudspeaker as the bass.
M. Chassis ground lug: Use for attaching a
terminal lug to the ground(s) of other equipment
in the system.

11
Figure 11
The two INPUT jacks.
+
From unbalanced
source
Male XLR
connector
GND
Shield Shield (no
connection)
+
Figure 12
Connections from a balanced audio source to the
systems controller.
Male XLR
connector
From balanced
source
Figure 13
Connections from an unbalanced audio source
to the systems controller.
–
–
Shield
+
–
Shield
(connected to pin 1)
+
GND
–
5.3 Input Connections
An audio source (mixing console or signal
processor) comes before the systems controller
in the signal path. That audio source feeds the
controller’s two INPUT jacks (Figure 11).
NOTE: The pin numbers are shown in small type on
the controller’s INPUT jacks.
If the audio source has balanced outputs (see Figure
12):
1. Find the source’s XLR high or plus output pins
(usually pin 2). Connect them to the PIN 2 (+)
terminals in the controller’s INPUT jacks.
2. Find the source’s XLR low or minus output pins
(usually pin 3). Connect them to the PIN 3 (-)
terminals on the controller’s INPUT jacks.
3. Connect the source’s cable shield to its ground
and to PIN 1 on the controller. (Do not connect it
at the controller input.)
If the audio source has unbalanced outputs (see
Figure 13):
1. Connect the source’s high or plus terminals to
PIN 2 (+) on the controller’s INPUT jacks.
2. Find the source’s ground (-) output terminals
(usually the sleeve on standard 1/4” jacks).
Connect them to the PIN 3 (-) terminals on the
controller’s INPUT jacks. Connect the minus
cable, and NOT the shield, at the controller
inputs.
3. Connect the source’s cable shield to the
ground (-) terminal at the source.

12
5.4 Output Connections
In a full-range system that includes only 402TM or 802®
loudspeakers, use the controller’s HIGH FREQ OUTPUT
jacks to drive the amplifier(s) feeding the loudspeakers.
Do not use the LOW FREQ OUTPUT jacks. The MODE
switch should be set to Mode 1 (FR).
In a bi-amplified system, use the controller’s HIGH
FREQ OUTPUT jacks to drive the amplifier(s)
feeding the high frequency loudspeakers (402
or 802 loudspeakers). Connect the LOW FREQ
OUTPUT jacks to the amplifier(s) driving the bass.
If the system has mono bass, use only the Channel
1 (left hand) LF output jack, and make sure that the
OUTPUT MODE switch is set to SUM.
For best audio performance, install all mixing or signal
processing equipment before the controller in the
audio chain. The 402C or 802C II systems controller
should be the last device in the audio chain before
the amplifier(s).
Here is how to wire the HIGH FREQ OUTPUT and
LOW FREQ OUTPUT jacks on the controller. When
the OUTPUT MODE switch is set to SUM, use only
the CH1/SUM (left-hand) LOW FREQ OUTPUT jack.
NOTE: The pin numbers for each controller output
are shown in small type inside the jacks.
If the amplifier has balanced inputs (see Figure 14):
1. Connect the controller’s PIN 2 (+) output
terminals to the amplifier’s hot, tip, or high
terminals. (These are usually pin 2 on XLR-
equipped amplifiers).
2. Connect the controller’s PIN 3 (-) output
terminals to the amplifier’s low, ring, or minus
terminals. (These are usually pin 3.)
3. Connect the controller’s PIN 1 GND output
terminals to the cable shield and to PIN 1 (XLR)
or ground at the amplifier.
If the amplifier has unbalanced inputs (Figure 15):
1. Connect the controller’s PIN 2 (+) output
terminals to the amplifier’s hot, tip, or high
terminals.
2. Connect the controller’s PIN 3 (-) output
terminals to the amplifier’s shield or ground
terminals. Use one of the two cable conductors.
3. Connect the controller’s PIN 1 GND output
terminals to its cable shield. Do not connect at
the amplifier end.
Figure 15
Connections from the systems controller to an
amplifier with unbalanced inputs.
Shield (no
connections)
– (GND)
+
Shield +
–
Amplifier
input
From
controller
–
Shield (no
connections)
–
+
+
Figure 14
Connections from the systems controller to an
amplifier with balanced inputs.
Shield
– (GND)
Amplifier
input
From
controller

13
5.5 Mechanical Connections
The 402TMC and 802®C II systems controllers are 1 3⁄4”
high (1U). They fit a standard 19” rack. Use screws
or bolts that fit the rack you are using. Note the
maximum depth of the rack as shown in Figure 16.
Figure 16
Make sure the rack will hold the controller.
5.6 Basic Operation
These controls are on the rear panel of the 402C or
802C II systems controllers.
INPUT LEVEL
These switches for each input channel adjust the
sensitivity between -10 dB and +4 dB (Figure 17).
To find the nominal output level of the output device
(mixer, signal processor), consult its owner’s guide
or call the manufacturer. Set the controller INPUT
LEVEL switch to the closest number possible.
Do not to overload the inputs of the controller. Set
the INPUT LEVEL switch, and adjust the output
device’s control(s). Keep the signal below the
controller’s maximum input level (+4 dBm or 1.23V
RMS).
Figure 17
The INPUT LEVEL sensitivity switches.
17.4”
44.2 cm
8”
20.3 cm
1.25”
3.18 cm
19”
48.3 cm
1.72”
4.37cm

14
Input MODE
This is a four-position switch. It selects one of three
operating modes for the controller.
Position 1: Full-range (FR) mode. (See Figure 18.)
Use for a full-range system with only 402TM or 802®
loudspeakers. Connect only the controller’s HIGH
FREQ OUTPUT jacks. Do not connect any amplifiers
or loudspeakers to the LOW FREQ OUTPUT jacks.
Position 2: Bi-amplified (BA) mode. (See Figure
19.) Use for a 402 or 802 system with 502TMB or
502BP Acoustimass®bass enclosures. Connect
the controller’s HIGH FREQ OUTPUT jacks to the
amplifier(s) driving the 402 or 802 loudspeakers.
Connect the controller’s LOW FREQ OUTPUT jacks
to the amplifier(s) driving the bass enclosure.
Position 3: No connection (NC). Do not use. It is
not connected in this version of the 402C or 802C II
controller.
Position 4: Option (OPT) mode. (See Figure 20.)
Use when the system includes an Acoustic Wave®
CannonTM System II loudspeaker. The corresponding
AWCS
OC-1 option card MUST be installed by authorized
Bose personnel in the controller to achieve correct
performance of the system. Connect the controller’s
LOW FREQ OUTPUT jacks to the amplifier(s) driving
the bass.
Figure 18
Input MODE switch in position 1: FR (full-range)
mode.
Figure 20
Input MODE switch in position 4: OPT (option)
mode.
mode.
Figure 19
Input MODE switch in position 2: BA (bi-amp)

15
Figure 21
Low frequency OUTPUT MODE switch (for bass
sum).
Low frequency OUTPUT MODE
(bass sum)
This switch (Figure 21) is very useful in systems
with only one bass loudspeaker or single-channel
bass. You can use it to combine the Channel 1 and
Channel 2 (or left and right) bass signals.
Even from 125 Hz to 140 Hz, some musical program
material contains differences between the channels.
With the OUTPUT MODE set on SUM, the signal
sent to the bass amplifier is the “sum” of the signals
received by the controller.
Simply set the OUTPUT MODE switch to SUM.
Connect the left-hand LOW FREQ OUTPUT jack
(CH 1/SUM) to the bass amplifier.
LOW FREQ LEVEL output
Set this control between 1 and 2 o’clock (marked “0”
dB), to nominally balance a two-loudspeaker, one-
bass system with amplifiers of identical gain on the
speakers and bass. (See Figure 22.)
Since some amplifiers do not have input attenuator
controls, the LOW FREQ LEVEL control adjusts the
relative level between the bass and mid-high bands.
Rotate the control counterclockwise to 8 o’clock
to decrease the level of the signal at the LOW
FREQ OUTPUT jacks by -18 dB. Rotate the control
clockwise from 0 dB to 4 o’clock to increase the
signal at the LOW FREQ OUTPUT jacks by +3 dB.
Set this control once for initial setup and adjustment
of the system. Do not use it as a program-material-
dependent gain control.
Figure 22
LOW FREQ LEVEL output control.

16
Appendix A:
Installing The
OC-1 Option Card
NOTE: The OC-1 option card can be purchased
and installed ONLY through an authorized Bose®
Service Center or dealer. It is not user-installable.
A.1 Installing The Internal
Protection Circuit Harness
1. Unplug the systems controller. Disconnect all
audio connections. Turn it so the rear panel
faces you (Figure 23).
2. Remove the four Phillips head screws from the
cover (Figure 23). Set them safely aside.
3. Slide the cover toward you. Then lift it off.
4. Find the plastic plug in the controller rear panel
(Figure 24). Pinch the top lock tab and push the
plug partially out (Figure 24b). Release the tab
and pull the plug the rest of the way out.
Figure 24
Remove the plastic plug covering the internal protection circuit harness opening.
24b
Figure 23
Remove the four Phillips head screws.

17
25a
25b
Figure 25
Positioning and securing the external harness.
25c
5. Remove the lock nut and washer from the
internal protection circuit harness (Figure 25a).
Set them safely aside.
6. Thread the internal harness through the rear
panel. Insert the small white connector first. The
wire end of the harness should now be inside
the controller.
7. Turn the barrel connector so the flat side
matches the flat side of the hole on the
controller. The connector should sit firmly
against the outside of the rear panel (Figure
25b).
8. Replace the lock nut and washer on the internal
harness INSIDE the rear panel. Tighten firmly
with needle nose pliers (Figure 25c).

18
A.2 Connecting The OC-1 To The
Systems Controller
The rear panel of the systems controller should face
you. The internal harness should be inside.
1. Turn the OC-1 circuit board so the component
side faces you.
2. Insert the small white connector on the
internal harness into the J1 jack on the circuit
board (Figure 26). Match the fin on top of the
connector to the slot on top of the jack.
3. Insert the circuit board into the multipin
receptacles inside the systems controller (Figure
27). The component side faces you. The J1 jack
is on the left side. Press gently to seat both plugs
firmly in the receptacles. Do not force.
NOTE: If you install the OC-1 backwards it won’t fit
properly and the interior harness won’t reach the jack.
4. Replace the controller cover. Slide the lip on the
front edge of the cover under the controller front
panel.
5. Replace the four screws in the controller cover.
Tighten firmly.
Figure 26
Connecting the OC-1 circuit board to the systems controller.
Figure 27
Seat the OC-1 plugs into the receptacles inside the systems controller.

19
A.3 Installing The Systems
Controller And External
Protection Circuit Harness
1. Install the systems controller in its rack. Refer to
Section 5 for AC and audio connections.
2. Make sure power to the entire system is off.
3. Check the length of the external protection
circuit harness. It should reach from the
systems controller to the speaker terminals on
the amplifier powering the AWCS II loudspeaker.
Allow at least 6” slack.
If necessary, trim the cable to length. If the
cable is too short, connect additional cable. Use
well-insulated in-line crimp on cable splices.
NOTE: Bose®recommends attaching the external
harness to a banana plug, if possible. Or, strip and
twist the wires for insertion into the speaker terminal
lug holes.
4. Attach the external harness to the internal
harness connector on the rear of the controller
(Figure 28). Turn the notch on the harness to the
right to attach it to the connector.
5. Hand tighten the lock nut on the external
harness.
6. Connect the other end of the harness to the
speaker terminals with screw lugs (Figure 29a)
or a banana plug (Figure 29b). Connect the
red wire to the positive terminal. Connect the
black wire to the negative terminal. (Note that
these illustrations show typical amplifier speaker
terminals for bridged mono mode.)
Figure 28
Attach the external harness to the internal harness connector on rear of controller.
Figure 29
Connection of the external harness to speaker
terminals (amplifier in bridged mono mode).
29a
29b

20
Appendix B:
Specifications
B.1 Electrical Specifications And
Controls
• Number of audio channels: two
• Front panel controls: on/off, pilot LED
• Operating modes for 802®C II controller: full-
range, bi-amped, option (with OC-1 option card)
• Operating modes for 402TMC controller: full-
range, bi-amped, option (with OC-1 option card)
• Rear panel connectors:
– Balanced input x 2 (terminal strip or
XLR)
– Balanced high frequency output x 2
(terminal strip or XLR)
–Balanced low frequency output x 2
(terminal strip or XLR)
• Rear panel controls:
– Mode switch (four positions, three
used)
– Input Sensitivity switch x 2 (-10 dB, +4
dB positions, +4 dB = 1.23V = 0 VU)
–Bass Level control (range -18 dB to
+ 3 dB)
– Bass Mode switch (norm/sum)
• Crossover frequency: 140 Hz in bi-amp mode
(with 502TMB or 502BP bass enclosures); 125 Hz
(with AWCS II loudspeaker OC-1 option card
installed); rolloff slope: 18 dB/octave
• Channel-to-channel separation: > 60 dB @ 1
kHz
• Input impedance: 2.0 kΩnominal (+4 dB input),
10 kΩnominal (-10 dB input)
• Output impedance: 100Ωnominal
• Output capability: 7.0 v RMS maximum into 10
kΩ
• Noise: <40 µV, A-weighted
• THD: < 0.05% maximum
• Power requirements:
100 VAC, 50/60Hz, 12 Watts (Japan)
120 VAC, 50/60Hz, 12 Watts (USA/Canada)
230 VAC, 50/60Hz, 12 Watts (Europe)
240 VAC, 50/60Hz, 12 Watts (UK/Australia)
B.2 Mechanical Specifications
• Dimensions: 1.72” (H) x 19” (W) x 8” (D);
4.37 cm (H) x 48.3 cm (W) x 20.3 cm (D)
• Weight: 5.5 pounds; 2.5 kg
B.3 Controller Accessories
• OC-1 option card for the Acoustic Wave®
CannonTM System II loudspeaker