TW Audio SYSRACK-L User manual

APL-output wiring
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
INININININ LINK LINK LINK
Analog 1 Analog 2 Analog 3 Analog 4
AES/EBU 1-2
Termination
APL5-T
PUSH PUSH PUSH PUSHPUSH
APL6-X
PUSHPUSH PUSH PUSH PUSH PUSH PUSH
PUSH
Termination
Termination
LINK IN
LINK IN
SEC. PRIM.
1-2 3-4 1 2 3 4
Ethernet AES / EBU Analog Line 123 4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
Bi-amp 1+2 Bi-amp 3+4
Mains INMulti OUT Ch2
Ch1
Ch3
Ch4
2+/-
1+/-
3+/-
4+/-
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch3
Ch4
3+/-
4+/-
1+/-
2+/-
Ch1
Ch2
PUSH
PUSHPUSH PUSH
PUSH
PUSH
APL7-TGX
MAINS IN
PRIM.
SEC.
ANALOG ANALOG ANALOG ANALOG
AES3
1+2
AES3
3+4
4
44
4
OUT
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
INININININ LINK LINK LINK
Analog 1 Analog 2 Analog 3 Analog 4
AES/EBU 1-2
Termination
APL5-L
PUSH PUSH PUSH PUSHPUSH
Operation manual

Operation manual APL-output wiring
2
Introduction
The TW AUDiO SYSRACKS are designed for the operation of small to medium-sized sound
reinforcement systems and enable fast and flexible cabling of several racks.
Each SYSRACK has four freely configurable amplifier channels, which are realized either by
one four-channel power amplifier or by two two-channel power amplifiers. Furthermore, each
rack also contains a APL connection panel, that provides either some or all of the amplifier‘s
connectors and additional link sockets at the front of the SYSRACK.
This manual describes the output wiring of the SYSRACKS with the connection panels.
Starting with APL5, all connection panels follow a uniform standard using 4-pin spea-
kON® NL4 and 8-pin speakON® NL8 sockets.
The input routing may vary depending on the amplifier platform and model used. For further
information on input cabling, please refer to the additional product product documentation or
contact the TW AUDiO support department.
Thank you for choosing a high-quality product “MADE IN GERMANY” from the brand
TW AUDiO.
If you lend your product to another party, inform that party of the safety-related operating pro-
cedures and hand over this assembly guide. If you require additional copies of this manual,
you can obtain them free of charge from TW AUDiO or download them from www.twaudio.de
CAUTION
WARNING
WARNING
Instructions in this user manual
Strictly adhere to the instructions contained in this operating manual that are marked as
follows:
This symbol in combination with the signal word “Warning” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to serious injury or even death.
This symbol in combination with the signal word “Warning” identifies a potentially hazardous
situation for persons with a pacemaker. Failure to comply with this safety instruction can lead
to serious injury or even death.
This symbol in combination with the signal word “Caution” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to light or moderate injury.

Operation manual APL-output wiring
3
Read manual
before use!
NOTE
TIP
This symbol in combination with the signal word “Note” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to product damage.
This symbol in combination with the signal word “Tip” identifies additional information or
notes that will simplify working with TWAUDiO products on the basis of practical experience.
Notes on the products
Before using the device, carefully read the operating manual and keep it with the APL connec-
tion panels.
General information
Operation manual APL-output wiring: OM-APL
Version 2.3 en, 12/2023
© by TWAMBO 2023; all rights reserved.
All information contained in this operating manual was correct to the best of our knowledge
at the time of printing.
Quality warranties or assurance of suitability for a certain type of use based on the technical
specifications, dimensions and weights are not granted by TWAMBO.
TWAMBO also shall not assume liability for any secondary damage (property damage and/or
personal injury) nor for the failure to comply with this operating manual!
TWAMBO reserves the right to update this document based on recent developments.
TWAMBO GmbH
Karl-Hofer-Str. 42
14163 Berlin
Germany
Phone : + 49 (0) 71 41-48 89 89 0
Fax: + 49 (0) 71 41-48 89 89 99
E-Mail: [email protected]
WWW: www.twaudio.de

Operation manual APL-output wiring
4
Content
1. Safety | Intended use...................................................................................................... 5
2. Technical data ................................................................................................................ 6
2.1 APL5 connection panel............................................................................................ 6
2.2 APL6-X connection panel ........................................................................................ 8
2.3 APL7-TGX connection panel ................................................................................... 9
3. Commissioning............................................................................................................. 10
3.1 Loudspeaker connection ....................................................................................... 10
3.2 Output channel assignment................................................................................... 11
3.3 Amplifier configuration ........................................................................................... 11
4. Wiring possibilities ........................................................................................................ 12
4.1 Cabling single-channel, passive loudspeakers ....................................................... 12
4.2 Cabling two-channel, passive loudspeaker (biamp)................................................ 14
4.3 Cabling of one- and two-channel passive systems ................................................ 16
4.4 Cabling two-channel subwoofer configuration ....................................................... 18
4.5 Amplifier system configuration with two-channel passive subwoofer...................... 20
4.6 Cabling single-channel passive top unit with multi-out ........................................... 21
4.7 Cabling two-channel passive top with multi-out ..................................................... 22
5. Transport and Storage.................................................................................................. 23
6. CE Conformity Declaration............................................................................................ 24
7. Disposal ....................................................................................................................... 25

Operation manual APL-output wiring
5
When moving (assembling, dismantling, maintaining) the APL connection panels, ensure suf-
ficient space to prevent collisions with other objects.
Do not squeeze or twist the electrical cables of the APL connection panels during the instal-
lation! The respective national electrotechnical rules and regulations are applicable.
1. Safety | Intended use
The APL connection panels are developed for use in professional sound systems. The
connection panels may only be used by trained and qualified personnel.
This operation manual describes how to use the APL connection panels correctly. Any other
use shall be deemed improper and may result in damage or even injury.
Modifications or alterations to individual parts of the APL connection panels are not permit-
ted! Danger to life!
Before every operation, check the scope of delivery of the APL connection panels for its
completeness and ensure that all parts are in perfect condition.
The APL connection panels is designed both for indoor and outdoor use. Keep the devices
away from water!
The panels are not protected against dripping, spraying or splashing water, IP20.
The APL connection panels may only be used by trained and qualified personnel. Personnel
must check the APL connection panels for suitability before each use.
The APL connection panels must be taken out of operation immediately as soon as visible
damage to the parts can be seen.
Please adhere to the following safety instructions to avoid risks when using accessories.
Note the operating modes described in this operating manual. Other uses are not permis-
sible.
Damage caused by improper use is not covered by TWAMBO.
WARNING
WARNING
WARNING
WARNING
WARNING
CAUTION
CAUTION

Operation manual APL-output wiring
6
2. Technical data
2.1 APL5 connection panel
Usage SYSRACK-L
Application
for front mounting in Rack3L |
in combination with a power amplifier of the
Lab Gruppen PLM+ series,
PLM+12K44 as standard
Dimensions 19“ | 1 U
Input 1× AES/EBU IN + LINK with switchable termination |
4× analog IN + 2 LINK
Output 6× speakON® NL4 OUT
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
INININININ LINK LINK LINK
Analog 1 Analog 2 Analog 3 Analog 4
AES/EBU 1-2
Termination
APL5-L
PUSH PUSH PUSH PUSHPUSH
Usage SYSRACK-T
Application
for front mounting in Rack3M |
in combination with two Powersoft T602
amplifiers as standard
Dimensions 19“ | 1 U
Input 1× AES/EBU IN + LINK with switchable termination |
4× analog IN + 2 LINK
Output 6× speakON® NL4 OUT
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
INININININ LINK LINK LINK
Analog 1 Analog 2 Analog 3 Analog 4
AES/EBU 1-2
Termination
APL5-T
PUSH PUSH PUSH PUSHPUSH
Figure: 2.1.1 - APL5-L
Figure: 2.1.2 - APL5-T

Operation manual APL-output wiring
7
The APL5-L and APL5-T connection panels are shown in abbreviated form in the following
sections. The internal wiring of the outputs of both panels is equivalent, which is why only one
representative example is shown.
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
APL5-L
Figure: 2.1.3 - simplified representation APL5-L and APL5-T
Bi-amp 1+2 Bi-amp 3+4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
3 41 2
APL5-T

Operation manual APL-output wiring
8
Usage SYSRACK-X
Application
for front mounting in Rack3X |
in combination with a Powersoft X4
power amplifier
Dimensions 19“ | 2 U
Mains in 1× powerCON® 32A IN
Network 2× ethercon®/RJ45
Input
2× AES/EBU IN + 2 LINK
with switchable termination |
4× analog IN + 4 LINK
Output 1× speakON® NL8 OUT |
6× speakON® NL4 OUT
The APL6-X connection panel is shown in abbreviated form in the following sections.
Figure: 2.2.2 - simplified representation APL6-X
APL6-X
PUSHPUSH PUSH PUSH PUSH PUSH PUSH
PUSH
Termination
Termination
LINK IN
LINK IN
SEC. PRIM.
1-2 3-4 1 2 3 4
Ethernet AES / EBU Analog Line 123 4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
Bi-amp 1+2 Bi-amp 3+4
Mains INMulti OUT Ch2
Ch1
Ch3
Ch4
2+/-
1+/-
3+/-
4+/-
APL6-X
123 4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-
Ch4
Bi-amp 1+2 Bi-amp 3+4
Mains INMulti OUT Ch2
Ch1
Ch3
Ch4
2+/-
1+/-
3+/-
4+/-
Figure: 2.2.1 - APL6-X
2.2 APL6-X connection panel

Operation manual APL-output wiring
9
Usage SYSRACK-TGX
Application
for front mounting in Rack4-TGX |
in combination with a power amplifier of the
Dynacord TGX series, TGX10 as standard
Dimensions 19“ | 2 U
Mains in 1× powerCON® 32A IN
Network 2× ethercon®/RJ45
Input 2× AES3 in combination and alternative use
with 4× analog IN & LINK via XLR
Output 1× speakON® NL8 OUT |
6× speakON® NL4 OUT
The APL7 connection panel is shown in abbreviated form in the following sections.
Figure: 2.3.2 - simplified representation APL7-TGX
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch3
Ch4
3+/-
4+/-
1+/-
2+/-
Ch1
Ch2
PUSH
PUSHPUSH PUSH
PUSH
PUSH
APL7-TGX
MAINS IN
PRIM.
SEC.
ANALOG ANALOG ANALOG ANALOG
AES3
1+2
AES3
3+4
4
44
4
OUT
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch3
Ch4
3+/-
4+/-
1+/-
2+/-
Ch1
Ch2
44
4
OUT
Figure: 2.3.1 - APL7-TGX
2.3 APL7-TGX connection panel

Operation manual APL-output wiring
10
3. Commissioning
3.1 Loudspeaker connection
The loudspeakers in the TW AUDiO product portfolio have several 4-pin NL4 connection
sockets which are wired in parallel inside the speaker. Depending on the system configuration,
all transmitted signals can be forwarded or received.
TW AUDiO‘s product portfolio includes single-channel passive tops and subwoofers that
require a dedicated amplifier channel as well as two-channel (biamp) tops and subwoofers
that require two dedicated amplifier channels.
Depending on the speaker type, the speaker drivers use the pin 1+/- (top) or 2+/- (sub) or both
pins of the four-wire NL4 connection.
The following table compares the internal speaker cabling of the different models.
CH Channel
FR Full range / Broadband / Entire playback spectrum
FS Front speaker, a forward-facing speaker in a cardioid configuration
GF Gradient front, a forward-facing speaker in a cardioid configuration
GR Gradient rear, a rear-facing speaker in a cardioid configuration
HF High frequency / high-frequency spectrum
LF Low frequency / low-frequency spectrum
RS Rear speaker, a rear-facing speaker in a cardioid configuration
SB Subwoofer
The following abbreviations are used in this document:
Passive Biamp
Top FR: Pin 1+/-
(Special case: T24N, C12, C15) HF: Pin 1+/- | LF: Pin 2+/-
Sub SB: Pin 2+/-
(Special case: B15, B10)
RS/GF: Pin 1+/- | FS/GF: Pin 2+/-
(Special case: BSX)
The channel designations RS and GR describe the same signal output. The same applies to
the channel designations FS and GF.
To improve readability, multiple designations has been omitted and only the channel designa-
tions GR and GF have been used.
NOTE

Operation manual APL-output wiring
11
3.2 Output channel assignment
The following table describes the assignment of the output sockets with the signals of the
amplifier channels and assigns them to the icons of the APL connection fields.
OUT Connector
type Pin 1+/- Pin 2+/- Pin 3+/- Pin 4+/-
NL4 CH1 CH1
NL4 CH1 CH2
NL4 CH2 CH2
NL8 CH1 CH2 CH3 CH4
NL4 CH3 CH3
NL4 CH3 CH4
NL4 CH4 CH4
Ch1 1+/-
2+/-
1+/-
2+/-Ch2
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch4
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
Ch2 2+/-
Ch1
Ch3
Ch4
1+/-
3+/-
4+/-
3.3 Amplifier configuration
The amplifier configurations described in this document do not correspond to the actual desi-
gnations of the speaker equalisations (presets) provided by TW AUDiO.
The information only provides an indication of which preset must be assigned to the corre-
sponding channel. The preset selection depends on the selected system configuration and
speaker application.
For further information on preset selection and amplifier configuration, please refer to the addi-
tional product documentation or contact the TWAUDiO support department.
Some products offer a passive and a biamp operating mode, e.g. T24N, C12, C15,
VERA10. To avoid damage, be sure to load the correct preset for the operating mode in use!
The B10 and B15 loudspeakers have the option of an internal crossover to separate the high
and low frequencies. Depending on the setting on the crossover, the drivers sometimes use
different wire pairs. Please contact the TWAUDiO support department for further information
on configuration.
NOTE
NOTE

Operation manual APL-output wiring
12
Figure: 4.1 - Cabling single-channel passive loudspeakers
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Bi-amp 1+2 3 41 2
APL5-L
Bi-amp 3+4
PASSIVE
BIAMP
HF 1±
LF 2±
FF 1±
passive top
CH1 — Pin 1+/-
passive subwoofer
CH2 — Pin 2+/-
passive monitor configuration
in left-right arrangement
Pin 2+/-
Pin 1+/-
CH3 — Pin 1+/- CH4 — Pin 1+/-
reverse cable
reverse cable
4. Wiring possibilities
4.1 Cabling single-channel, passive loudspeakers

Operation manual APL-output wiring
13
CH1 CH2 CH3 CH4
T24N pa BS30 M8 M8
If you use the BIAMP output of the amplifier or the patch panel, an additional pin reverse cable
may be required.
Amplifier configuration of the example system:
NOTE

Operation manual APL-output wiring
14
Figure: 4.2.1 - Cabling biamp loudspeakers
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Bi-amp 1+2 3 41 2
APL5-L
Bi-amp 3+4
PASSIVE
BIAMP
HF 1±
LF 2±
FF 1±
biamp top
HF: CH1 — Pin 1+/-
LF: CH2 — Pin 2+/- two-channel passive subwoofer
LS1: CH3 — Pin 1+/-
LS2: CH4 — Pin 2+/-
The loudspeaker requires two amplifier channels. The treble drivers of two-channel biamp tops
are electrically connected to pin 1+/- and the bass or mid-range drivers to pin 2+/-.
CH1 CH2 CH3 CH4
T24N bi_HF T24N bi_LF BSX LS1 BSX LS2
Amplifier configuration of the example system:
When using two-channel biamp tops, always ensure that you use the speakON® connector
of one of the biamp outputs on the connection panel.
Ch3
Ch4
1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
4.2 Cabling two-channel, passive loudspeaker (biamp)
NOTE
CAUTION
Some products offer a passive and a biamp operating mode, e.g. T24N, C12, C15,
VERA10. To avoid damage, be sure to load the correct preset for the operating mode in use!

Operation manual APL-output wiring
15
1 2 34
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch2 2+/-
Multi OUT Mains IN
Ch1
Ch3
Ch4
1+/-
3+/-
4+/-
Bi-amp 3+4Bi-amp 1+2
APL6-X
Figure: 4.2.2 - Cabling biamp loudspeakers
biamp top
HF: CH1 — Pin 1+/-
LF: CH2 — Pin 2+/-
CH1 CH2 CH3 CH4
VERA36_HF VERA36_LF VERA S33_GR VERA S33_GF
Amplifier configuration of the example system:
subwoofer with
directional dispersion
GR: CH1 — Pin 1+/-
GF: CH2 — Pin 2+/

Operation manual APL-output wiring
16
Figure: 4.3.1 - Cabling two-channel passive systems
CH1 CH2 CH3 CH4
T24N papapass BS30 ELLA6 BS15 active
Amplifier configuration of the example system:
Two-channel passive systems consist of a single-channel passive top and single-channel sub-
woofer on each side, driven by two dedicated amplifier channels. Therefore, four amplifier
channels are required for the overall L/R system.
As single-channel passive tops are electrically connected to pin 1+/-, it is recommended to
load these presets into odd-numbered amplifier channels.
As single-channel passive subwoofers are electrically connected to pin 2+/-, it is recommen-
ded to load these presets into even amplifier channels. This results in simple cabling with the
patch panels of the TW AUDiO amplifier racks.
PASSIVE
BI-AMP
HF 1±
LF 2±
FF 1±
1 2 3 4
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Mains INMulti OUT
APL6-X
Ch2
Ch1
Ch3
Ch4
2+/-
1+/-
3+/-
4+/-
Bi-amp 1+2 Bi-amp 3+4
passive top
CH1 — Pin 1+/-
subwoofer
CH4 — Pin 2+/-
subwoofer
CH2 — Pin 2+/-
passive top
CH3 — Pin 1+/-
4.3 Cabling of one- and two-channel passive systems

Operation manual APL-output wiring
17
To ensure correct and safe operation of these systems, adjustments must be made to the
passive crossover. Please contact the TW AUDiO support department for further information
on configuration.
Single-channel passive systems consist of a top unit and a subwoofer whose frequency ran-
ges are separated by an internal passive crossover, usually in the subwoofer. This means that
two amplifier channels are required for the overall L/R system.
Figure: 4.3.2 - Cabling single-channel passive systems
CH1 CH2 CH3 CH4
B15pM8 B15pM8
Amplifier configuration of the example system:
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-
Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
3 41 2
APL5-T
Bi-amp 1+2 Bi-amp 3+4
passive system top-sub:
FR: CH1 — Pin 1+/-
passive system top-sub:
FR: CH2 — Pin 1+/-
CAUTION

Operation manual APL-output wiring
18
Figure: 4.4.1 - Cabling a two-channel subwoofer configuration with directional radiation (cardioid stack)
When using a speaker configuration for directional subwoofer arrangements (cardioid sta-
cks), two independent amplifier channels are required. The APL7 connection panels offer two
options for cabling the configurations.
Presets for rear-facing subwoofers in cardioid stacks are labeled GR in the system con-
troller, and presets for front-facing subwoofers are labeled GF. Please contact the
TW AUDiO support department for further information on the configuration and structure of
cardioid stacks.
1 2 34
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch2 2+/-
Multi OUT Mains IN
Ch1
Ch3
Ch4
1+/-
3+/-
4+/-
Bi-amp 3+4Bi-amp 1+2
APL6-X
CSA-Stack B30:
GR: CH1 — Pin 1+/-
GF: CH2 — Pin 2+/-
reverse cable
CSA-Stack B18:
GR: CH3 — Pin 1+/-
GF: CH4 — Pin 2+/-
Special case BS18:
- Rear connection panel: Pin 2+/- is connected to the driver
- Front connection panel: Pin 1+/- is connected to the driver
If you use the biamp output of the amplifier or the patch panel, an additional pin reverse cable
may be required.
4.4 Cabling two-channel subwoofer configuration
NOTE

Operation manual APL-output wiring
19
CH1 CH2 CH3 CH4
BS30cardio_GR BS30cardio_GF BS18cardio_GR BS18cardio_GF
Amplifier configuration of the example system:
Figure: 4.4.2 - Cabling a two-channel subwoofer configuration with directional radiation (cardioid stack)
1 2 34
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch2 2+/-
Multi OUT Mains IN
Ch1
Ch3
Ch4
1+/-
3+/-
4+/-
Bi-amp 3+4Bi-amp 1+2
APL6-X
CSA-Stack B30:
GR: CH1 — Pin 1+/-
GF: CH2 — Pin 2+/-
Special case BS18:
- Rear connection panel: Pin 2+/- is connected to the driver
- Front connection panel: Pin 1+/- is connected to the driver
CSA-Stack B18:
GR: CH3 — Pin 1+/-
GF: CH4 — Pin 2+/-
CH1 CH2 CH3 CH4
BS30cardio_GR BS30cardio_GF BS18cardio_GR BS18cardio_GF
Amplifier configuration of the example system:

Operation manual APL-output wiring
20
Figure: 4.5 - Amplifier system configuration with two-channel passive subwoofer
Ch1 1+/-
2+/-
Ch1
Ch2
1+/-
2+/-
1+/-
2+/-Ch2
Ch3 1+/-
2+/-
Ch3
Ch4
1+/-
2+/-
1+/-
2+/-Ch4
Ch3
Ch4
3+/-
4+/-
1+/-
2+/-
Ch1
Ch2
44
4
OUT
passive top
CH3 — Pin 1+/-
subwoofer with directional dispersion
GR: CH1 — Pin 1+/-
GF: CH2 — Pin 2+/-
passive top
CH4 — Pin 1+/-
CH1 CH2 CH3 CH4
VS32_GR VS32_GF ELLA6 ELLA6
Amplifier configuration of the example system:
A four-channel overall system can also be realized with a two-channel subwoofer. To do this,
the subwoofers are connected in parallel to two amplifier channels. The single-channel, pas-
sive tops each use one amplifier channel.
4.5 Amplifier system configuration with two-channel passive subwoofer