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BGX-A2

Bg radia BGX, BGX-A2, BGX-S12B, BGX-S6B Owner's Manual And Setup Procedures

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Owner’s Manual
and Setup Procedures
BGX Vibration-Free Architectural Subwoofer System
T h e P o w e r o f C l a r i t y
Contents and Introduction
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . 3
THX Performance Ratings and Technology. . . . . . . . . . . . 3
General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Subwoofer Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Construction Principles and Preparation. . . . . . . . . . . . . . 7
Retrot installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
New construction installation . . . . . . . . . . . . . . . . . . . . 9-10
Grille Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
BGX-A2 Amplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
System Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Conguration Settings . . . . . . . . . . . . . . . . . . . . 14
Amplier Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Introduction
Congratulations and thank you for selecting this state-of­the-art vibration-free architectural subwoofer system from BG Radia. We have assembled your system with the great­est care using the nest materials available. The rugged and inert thermoset composite resin enclosure and steel and aluminum components have been painstakingly designed and constructed for years of listening enjoyment.
This craftsmanship, combined with advanced design concepts and technology developed by THX® Ltd. delivers incredibly powerful bass with virtually no distortion. And it does it in a compact and elegant package suitable for custom installation in today’s luxury homes.
As the rst vibration-free in-wall subwoofer to carry the THX Ultra2 level of certication, you can be assured that this system will reproduce music and movie sound tracks with the best possible performance and as the artist or director intended.
This manual will explain in detail how to setup and operate this product in order to achieve maximum performance.
Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Amplier Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
RS-232 Serial Control . . . . . . . . . . . . . . . . . . . . . . . . . . 18-21
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
THX, t he T HX l ogo an d “ THX B al ance d Ba s s-Li ne ” are t ra dema rk s o f T HX Ltd . which m ay be re gist er e d in s om e ju ri sd ic t ions . Manu fa ct ured u nd er lic en se fro m THX L td. Al l ri ghts re served .
PLEASE NOTE: the installation portion of this manual is written with professional custom installers in mind and assumes experience and familiarity with local electrical and construction codes.
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Important Safety Instructions
Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block and ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not t into your outlet, consult and electrician for a replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specied by the manufacturer.
12. Use only with the cart, stand, tripod bracket or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury for tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. WARNING: Please refer the information on exterior rear en-
closure for electrical and safety information before installing or
operating the apparatus.
16. WARNING: To reduce the risk of re or electric shock, do not
expose this apparatus to rain or moisture. The apparatus shall not
be exposed to dripping or splashing and that no objects lled
with liquids, such as vases, shall not be placed on apparatus.
17. Correct Disposal of this product. This marking
indicates that this product should not be disposed with other
household wastes throughout the EU. To prevent possible harm
to the environment or human health from uncontrolled waste
disposal, recycle it responsibly to promote the sustainable reuse
of material resources. To return your used device, please use the
return and collection systems or contact the retailer where the
product was purchased. They can take this product for environ-
mental safe recycling.
18. Use of the apparatus in moderate climates.
19. The rating and marking information are located at the rear/
bottom of the unit.
20. The mains plug of unit should be obstructed or should be
easily accessed during intended use.
21. To be completely disconnect the power input, the mains plug
of apparatus shall be disconnected from the mains.
22. This lightning ash with arrowhead symbol within an equi-
lateral triangle is intended to alert the user to the presence of
non-insulated “dangerous voltage” within the product’s enclosure
that may be of sucient magnitude to constitute a risk of electric
shock.
- Warning: To reduce the risk of electric shock, do not remove
cover (or back) as there are no user-serviceable parts inside. Refer
servicing to qualied personnel.
- The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating and
maintenance instructions in the literature accompanying the
appliance.
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General Speaker Setup
General Setup
These speakers are designed to t inside a standard 2 x 4 stud depth wall with only a ush mount grill exposed. The amplier is typically placed near the other system electronics with standard speaker wire running to each of the speaker modules.
Please note: NCB6 or NCB12 (new construction brackets) are required for most in-wall mounting applications.
The BGX-A2 amplier module contains DSP based equalization, home automation capabilities, and 2x1100W digital ampliers to run the complete system. Each ampli­er channel drives two BGX-S6B subwoofer modules in a parallel conguration or one BGX-S12B module.
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THX Technology
THX Balanced Bass-Line™ Technology eliminates sound coloration due to wall vibration.
Four BGX-S12B bass modules contain 48 drive units that provide a total radiating area equiva­lent to that of two 18” drivers.
Small Room Acoustics
The Problem
Subwoofer Placement
Due to the size of typical domestic living spaces, low frequency sounds constructively and destructively interact with a room, creating a series of peaks and dips in the response of a subwoofer. These are position-dependent and impacted primarily by both the position of the source (the subwoofer) and the listener. This important variable needs to be addressed in order to achieve consistently high performance.
You’ve probably experienced moving around in a room while music or a movie is playing and hearing lots of bass in one spot, but next to none just a few feet away. Equal­ization is not the answer because, while it can make bass sound really good in one location, it can’t do the same for a large seating area.
The Solution: Multiple sources
Multiple subwoofers greatly reduce the room’s potential negative impact and optimize the overall smoothness of response over a wide listening area. This spatial problem can only be solved in this manner, not through equalization alone.
For maximum output, albeit with increased room interaction, collocate the modules near a corner of the room. BGX subwoofer installation height is not critical but the maximum output of the system can be increased somewhat by placing the woofer modules near the corners or close to the wall-oor or wall-ceiling junction.
If you cannot install your subwoofer modules around these locations, please contact your BG Radia dealer for recommendations.
In pre-existing construction, especially in non-rectangular rooms, it can be benecial to position subwoofer modules in the room and actually listen before permanently installing them. Unlike most other in-wall subwoofer options, this subwoofer does not require any additional enclosures to work properly and so you can optimize system performance in the room by experimenting with dierent physical placement options.
For cabinet mounting, the BGX-S6B and BGX-S12B sub­woofer modules are self enclosed and, as such, do NOT require any special cavity preparation or back box.
For best performance, using two or four woofer modules, our general subwoofer placement recommendations are shown in Fig.1. The preferred locations are outlined with dashed lines.
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Subwoofer Placement (continued)
Fig. 1 Recommended placement of subwoofer modules in-room
Four subwoofer locations
Typically yields smoother response
Two subwoofer locations
Typically yields higher output
Typically yields smoother response
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Typically yields higher output
Construction Principles & Preparation
Installation Considerations
The BGX subwoofer system has been designed primarily with in-wall mounting in mind. However, since the woofers are self contained (they do not rely on the wall cavity or a separate back box) there are many other types of instal­lation opportunities including in-ceiling, in-oor, cabinet mounting or even free-standing or on-wall (with an appro­priate covering).
Make sure in these cases that the front radiating slot has minimum clearance of 2” (50 mm) from any large obstruc­tions like walls or panels.
Fig. 2 Installing NCB
Trace NCB outline and cut around perimeter
Construction Preparation
Generally BGX subwoofer modules do not require any special preparation of wall or ceiling cavities for their installation.
We recommend adhering to usual safety and industry standards, rules of good practice and techniques.
However if you are considering installation of subwoofer module below another BG speaker within one stud cavity, you need to separate the upper speaker cavity from the subwoofer cavity with an air tight seal. You do not need to do this if you use one of BG’s back boxes for the upper speaker.
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Retrofit Installation
Retrofit installation with 15” wide grille
1. Remove the new construction bracket (NCB) from the packaging and use it as a template for the drywall cutout. Mark and cut the wall in the desired location, as shown in Fig. 2, allowing for at least 1/16” clearance. Use a level if necessary.
2. Run speaker wire to the subwoofer location(s). You will need (one) two-conductor wire per subwoofer module.
3. Insert NCB in the cutout, making sure that its mounting ange sits rmly on top of the drywall surface. Using at least four long wood screws and a screw gun, install the NCB as shown in Fig. 2. Level the NCB if necessary using the bend out metal tabs to account for any tolerance.
4. Take the subwoofer module and install it inside the NCB using the four supplied machine screws. See detail in Fig. 3. Make sure it is fastened tightly and does not rattle.
5. Hook up speaker cable to binding posts at the bottom, paying attention to correct polarity.
6. Install the 15” wide grille by inserting its frame inside the NCB. The magnets behind the grille’s rails will hold it securely in place.
Fig. 3 Installing subwoofer module and 15” wide grille
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New Construction Installation
New construction installation
1. During pre-wire, pull wire to the planned subwoofer locations. You will need (one) two-conductor wire per woofer module (or one four-conductor wire per pair of modules).
2. Remove the new construction bracket (NCB) from the packaging and install it in the stud bay in the desired location. Make sure that its side metal anges are set tightly against drywall surface. Using at least four long wood screws and a screw gun, install NCB as shown on
Fig. 4 Installing NCB and subwoofer module for new construction
Fig. 4 on the left. Level the NCB if necessary using the bend out metal tabs to account for any tolerance.
3. Take the subwoofer module with protective cover attached and install it inside NCB using the four supplied machine screws in the same way as shown in Fig. 3. Make sure it is fastened tightly and does not rattle. Refer to the right image on Fig. 4.
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>
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New Construction Installation (cont.)
4. When installing drywall, cut the opening around the protective cover plate as shown on Fig. 5 on the left.
5. After drywall painting is completed and the system is ready for hook up, remove the cover plate and hook up the speaker cable to the binding posts at the bottom, paying attention to correct polarity.
Fig. 5 Installing NCB and subwoofer module for new construction
6. Take the 7” wide grille bezel without the grille material installed and attach it to subwoofer module as shown in Fig. 5 on the right image. Use the same four screws that were used to hold the protective cover plate.
7. Remove the upper plastic end cap on the bezel. Slide the grille material into the bezel and nish by snapping the end cap in place.
> >
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Grille Assembly
Your choice of two grille sizes are available with the BGX subwoofer modules. One is 7” wide and is used primarily for new construction or when a thinner prole is desired and some drywall work is being done during installation. The other option is 15” wide and is used for retrot installations. No drywall repair is required in this case. See Fig. 6 on right. Both grilles are available in either white or black.
Fig. 6 Subwoofer grille options
Grille Options
(Includes a metal protective cover plate / tem­plate for use during construction. This plate is
then removed to be replaced by the grille.)
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Wide 15” grille for retrot installationNarrow 7” grille for new construction installation
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BGX-A2 Amplifier
BGX-A2
115VAC~60Hz,T12AL 1200W 230VAC~50Hz,T6.3AL 1200W
BGX-A2
The BGX-A2 is a second-generation power amplier, de­signed expressly to create world-class bass performance when used as a system with BGX subwoofer modules. When two ampliers are used with four BGX-S12B sub modules, the system achieves THX Ultra2 performance levels, and is the only in-wall subwoofer in the world which does so. A single BGX-A2 with either two BGX-S12B or four BGX-S6B modules will reach THX Select2 performance.
Please read carefully the following pages to insure cor­rect connection and operation of the BGX-A2 within your system. With its extremely high power output (1100 watts per channel) and its powerful DSP equalization matching it precisely to the parameters of the subwoofer modules, the BGX-A2 is the heart of the nest subwoofer systems in the world.
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Fig. 7 BGX-A2 rear panel inputs
System Hookup Information
6
5
4
3
Hooking Up the System
1. AC Power - Connect the included power cord into the recessed IEC AC input socket. Do not plug the amplier into a live electrical socket until all connections are made and the entire system is ready to play.
2. Speaker Outputs - There are two sets of heavy duty binding posts clearly marked with “+” and “-” labels.. Each subwoofer module has two spring-loaded terminals color coded in red for “+” and black for “-”.
The positive (+) amplier output terminals should be connected to the red (+) terminals on the subwoofer modules. The negative (-) amplier terminals should be connected to the black (-) terminals on the subwoofer modules.
One BGX-S12B or two BGX-S6B subwoofer modules may be connected to each amplier speaker output. BG recommends high quality 12-16 AWG OFC (oxygen­ free copper) speaker wire for all speaker connections. We do not recommend specialty connectors which are not compatible with push terminals on the subwoofer modules or the binding posts on the amplier.
3. Audio Inputs - Connect the amplier to the subwoofer output of your surround sound processor using high quality audio interconnects, either an XLR connector to the Balanced Input or an RCA connector to the Unbalanced Input.
2
BGX-A2
115VAC~60Hz,T12AL 1200W 230VAC~50Hz,T6.3AL 1200W
1
the rst amp (the one connected to the surround sound processor) to the Unbalanced Input on the second amp. Continue this process to connect any additional BGX-A2 ampliers to the system.
Note: Although the BGX-A2 is a two channel amplier
and the unbalanced and line out each have two jacks, the subwoofer signal is mono and the amps sums the input signal to mono if you use both jacks!
4. RS-232 - This DB9 jack receives full duplex control signals from an automation system. Connect a serial cable with a male DB9 connector from a serial control port on the automation control system (see pages 18-21 for further details on RS-232 control specication for the BGX-A2).
[Pinouts: Pin 2 = TX, Pin 3 = RX, Pin 5 = Ground(-)].
5. IR Input - Connect a 3.5 mm mono mini plug standard cable to the IR Direct Input from an IR output on your surround processor or your IR control system.
[Pinouts: Tip = Hot (+), Sleeve = Ground (-)].
5. +12V Trigger Input - Connect a two-conductor wire from this Phoenix type connector to either a +12V trigger output on your surround processor or control system, or to a 12VDC power supply plugged into a switched AC outlet, observing correct polarity. This trigger will respond to signals with a range of 6-15V .
For systems with multiple BGX-A2 ampliers, simply connect an RCA interconnect from the Line Out of
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System Configuration Settings
Fig. 8 BGX-A2 rear panel controls
3
4
6
5
Amplifier Operation
1. Voltage Selector - Before connecting power, make sure that both voltage selector switches show the proper voltage (115V or 230V ) for your location.
2. Master Power - Turn on only after all connections are made and the system is ready to be used. Thereafter, the amp will be turned on and o by one of the ve trigger methods (see page 15).
3. Gain / Low Pass - This switch allows you to either use the amplier’s own crossover circuits while in the “variable” mode, or to bypass them to use the surround processor’s bass management while in the “THX” mode. In most systems, it will be best to set this control to “THX” and rely on your surround processor to direct the proper mix of bass frequencies to the subwoofer system. This also avoids having multiple subwoofer crossovers interacting and causing unpredictable performance around the crossover point.
2
BGX-A2
115VAC~60Hz,T12AL 1200W 230VAC~50Hz,T6.3AL 1200W
1
4. Low Pass - This knob selects the frequency of the system’s on board crossover (12 dB / octave low pass lter) and represents the upper -3 dB point of the subwoofer’s frequency response. This is particularly useful if your BGX subwoofer is being sent a full-range signal (as would be the case using a “pre out” from a stereo amplier or preamp which does not have a subwoofer out) or in a surround or multi-channel music system using large speakers and limited bass management functionality. In these situations, along with the gain and phase controls, it allows you to ne-tune the blend between the subwoofers and the main speakers.
5. Phase - the phase control provides frequency dependant delay. Depending on a number of factors including the relative positions of the speaker, subwoofer and (you) the listener, there may be acoustic cancellation instead of a proper combining of the speakers and subwoofer at the crossover point (where their outputs overlap). By repeatedly adjusting the phase control and evaluating (via listening or measurement) the transition from speaker to subwoofer, optimal summation of the subwoofer and speakers can be achieved.
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6. EQ - This switch is not functional at present. It is reserved for future use with other BGX subwoofer modules.
Amplifier Operation
BGX-A2
Power Switch
This turns things on or
returns to standby.
Gain Control
Adjusts input
sensitivty of amp.
Turning on the Amplifier
There are ve methods to wake the amplier from its STANDBY state. System on is indicated by a blue lit ring around the POWER switch.
1. Power Button Pressed
2. Audio Signal Detection - With the power trigger switch in the AUTO position, the amplier will automatically turn on when it receives an audio signal at its input that is above the threshold (approx. 50 mVRMS).
3. Power Trigger - The amplier detected a logic high voltage signal, within its specied range, on the rear panel power trigger connector.
Note: The system will remain on indenitely while a high
voltage level is present.
4. RS-232 Control - The amplier received a valid “system
on” RS-232 serial command.
5. IR Command - The amplier received a valid “system on” infrared command via either the front panel IR
sensor or the IR Direct rear panel connection.
Music / Movie Mode Switch
Selects one of two
programmed equalization
settings, according to your preference.
IR Sensor
Receives infrared remote control
signals from the included remote
or a universal remote.
Turning off the Amplifier
There are ve methods to turn o the amplier, returning it to its STANDBY state. Standby is indicated by an amber lit ring around the POWER switch.
1. Power Button Pressed
2. Audio O Timer - With the power trigger switch in the AUTO position, the amplier will automatically turn o if it does not sense any signal activity for about 30 minutes.
3. Power Trigger - The amplier detected a logic high to low transition on the rear panel power trigger connector.
Note: The amplier must rst sense a logic high voltage
within the specied range, otherwise it will not perform any change as a logic low signal is the same as having no power trigger attached.
4. RS-232 Control - The amplier received a valid “system
o ” RS-232 serial command.
5. IR Command - The amplier received a valid “system o ” infrared command via either the front panel IR sensor or the IR Direct rear panel connection.
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Remote Control
IR Remote Control
The separate IR remote controls only the basic system func­tions including: Power On, Power O, Music Mode, Movie Mode, Level Up (+) and Level Down (-)
Most of these functions are self explanatory and were described in previous sections. The level (+) and level (-) re­mote buttons adjust the volume by 1 dB per press. Holding down the level buttons will continuously adjust the volume until released or the min./max positions are reached.
IR Direct Control
The IR Direct rear panel connection performs exactly the same functions as described above in the IR Remote Control section except it utilizes the rear panel electrical connection.
Power Trigger Control
A logic high (within the specied range) will turn on the system if it was previously o. While a high level is present on the power trigger connection the system will remain on indenitely until removed.
A high to low transition on the power trigger connection will turn o the system. A continuous low state (or no cable attached) allows the other power change methods to take control as needed.
Fig.12 Remote control functions
BGX-A2 amplier remote control with function buttons.
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System Protection
The system incorporates several protection schemes to prevent component/system failure including: Short Circuit, Thermal Overload and Limiters.
Short Circuit Protection
Each speaker output connector can withstand a continuous shorted condition without permanent failure. However it is not advised to short the system for any reason.
Note: The amplier/s will heat during a prolonged short circuit
state and eventually activate the fan.
Thermal Overload Protection
The thermal overload protection has two states where the rear mounted fan operates under normal circumstances and the ampliers shut down individually under extreme conditions.
Amplifier Protection
During normal operation the fan provides more than adequate cooling for prolonged high output levels. The fan activates if the internal temperature rises above a predetermined point and typically operates for several minutes cooling the system well below the trip point to prevent rapid on/o cycling.
Under extreme conditions including high ambient temperatures or inadequate ventilation, the amplier/s can shutdown briey until the internal temperature decreases. If shutdown occurs check for proper ventilation especially at the rear mounted fan and the top cover holes.
Note: The ampliers have individual thermal shutdown con-
trols therefore only one amp may shut down at a given time.
Limiters
The system incorporates internal limiters to protect the amplier and speaker from signal overloads on high peaks and long term high outputs. The operation is transparent to the user and is not adjustable.
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Serial Control
RS-232 Communication (Home Automation Control)
The RS-232 port, located on the back of the unit, allows for a home automation system to remotely activate some of the basic functions and read back the settings. The automation scheme operates with host communication via a PC, Crestron or any other device that can be programmed to send and receive standard UART data.
The port requires the following settings to establish communication:
The following sequence describes the communication structure:
<SOP><SOP><COMMAND><DATA><CHKSUM><EOP>
SOP = Start of packet indicator (0x0F and also a
control character)
COMMAND = 5 basic commands are available
DATA = Data value to be processed
• 38400baud (38.4K)
• 8-bits no parity
• 1 stop bit
Communication follows a simple protocol for sending commands and receiving back a response. All commands have a response to verify the command was indeed received but can be ignored if not required. The typical response is the same command sequence followed by the data value intended.
Throughout this section TX refers to the host transmitting data (sending commands) and RX refers to the data received by the host (Subwoofer Amplier sends a response). All values are listed as 8-bit hexadecimal with notation as 0x0A = 0A in hexadecimal.
CHKSUM = Calculated checksum of all bytes except
control characters (DATA + CHKSUM = 0x0, 0x100, 0x200 etc dened as the lower single byte)
EOP = End of packet indicator (0x04 and also a
control character)
The 5 basic commands available are listed below:
A0 = Power Change (Turn system ON or OFF)
A1 = Mode Change (Activate Music or Movie Mode)
A2 = Level Change (Adjust Level Up or Down in 1dB steps)
A3 = Level Specic [Adjust level to a specic setting (-60dB
to +7dB)]
A4 = Status/Settings (Read current status and settings)
3535 Arrowhead Drive · Carson City, NV 89706
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775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
Serial Control
RS-232 Commands in Detail
The communication protocol includes three control characters so that any value transmitted can be interpreted as either data for processing or a functional indicator. The three control characters are [SOP (0x0F), EOP (0x04) and ESC (0x05)].
Any command, data or checksum value that is identical to a control character requires the ESC value sent before the intended byte. In simple terms the ESC (0x05) value must be inserted before any data, command or checksum value if it equals 0x0F, 0x04 or 0x05.
Example: TX = 0F 0F A3 05 0F 4E 04
Host transmission begins with 2x SOP (0F 0F) followed by a command for a specic level (A3). The data value next is (0F) which is a control character therefore the ESC (05) value must be placed before the data value. The checksum follows (A3 + 0F + 4E = 00 on the lower byte). The nal value is the EOP indicator which completes the transmission and allows the system to begin processing the data packet.
Note: Control characters are not part of the checksum
calculation.
Power Change (A0)
The power change command includes turning ON and OFF the system.
Turn ON
TX = 0F 0F A0 01 5F 04
RX = 0F 0F A0 01 5F 04 (same as TX)
The above sequence will turn ON the system. If the system is already ON then no change will occur but the power indicator will ash momentarily to show an accepted command and the display will wake if in the o state.
Turn OFF
TX = 0F 0F A0 00 60 04
RX = 0F 0F A0 00 60 04 (same as TX)
The above sequence will turn OFF the system. If the system is already OFF then no change will occur.
Note: If the hardware power trigger is currently at logic high
(within the specied range) then the OFF command will not perform any system change as it is under external hardware control. If the system is o this command is ignored.
The response (RX) to the above example is the same as TX in this case.
RX = 0F 0F A3 05 0F 4E 04 sent back to the host indicating successful communication.
Note: A single line (packet) of communication must be com-
pleted within 50ms or the RS-232 block will reset. Also RX will be sent upon completion of the command processing. Some commands may take several seconds before a response at which time all newly received TX commands are ignored.
3535 Arrowhead Drive · Carson City, NV 89706
775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
19
Serial Control
Mode Change (A1)
The mode change command includes switching between the Movie and Music modes.
Movie Mode
TX = 0F 0F A1 01 5E 04
RX = 0F 0F A1 01 5E 04 (same as TX)
The above sequence will activate Movie mode. If the system is already in Movie mode then no system change will occur.
Music Mode
TX = 0F 0F A1 00 5F 04
RX = 0F 0F A1 00 5F 04 (same as TX)
The above sequence will activate Music mode. If the system is already in Music mode then no system change will occur. The mode function indicator and the Music setting will be shown even if the display was in its o state.
Level Change (A2)
The level change command includes increasing and de­creasing the current level by 1dB.
Level Up
TX = 0F 0F A2 01 5D 04
RX = 0F 0F A2 01 5D 04 (same as TX)
The above sequence will increase the level by 1dB. The level function indicator and the new level setting will be shown even if the display was in its o state.
Note: If the level is at its maximum then no system change will
occur and RX is not sent. Polling the system using the Status/ Settings command will indicate the current level position. If the system is o this command is ignored.
Level Down
TX = 0F 0F A2 00 5E 04
RX = 0F 0F A2 00 5E 04 (same as TX)
The above sequence will decrease the level by 1dB. The level function indicator and the new level setting will be shown even if the display was in its o state.
Note: If the level is at its minimum of -60dB then no system
change will occur and RX is not sent. If the system is o this command is ignored.
3535 Arrowhead Drive · Carson City, NV 89706
20
775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
Level Specific Change (A3)
The level specic change command allows instant selection of any level in the range -60dB to +7dB.
TX = 0F 0F A3 (00 to 46) CHKSUM 04
RX = 0F 0F A3 (00 to 46) CHKSUM 04 (same as TX)
The level function indicator and the new level setting will be shown even if the display was in its o state.
Note: If the level is outside of the specied range then no system
change will occur and RX is not sent. If the system is o this command is ignored.
BE ADVISED THAT THE LEVEL CHANGE CAN INSTANTLY SWITCH TO A VERY HIGH OUTPUT.
Status/Settings (A4)
Serial Control
The Status/Settings command provides all the necessary system information to aid in control via home automation setups.
TX = 0F 0F A4 00 5C 04
RX = <SOP><SOP><COMMAND><INPUT><MODE><LEVE
L><POWERSTATUS><CHKSUM><EOP>
MODE = 00 for Movie, 01 for Music
LEVEL = 00 thru 43 where 00 = -60 dB, 3C = 0dB and 43 =
+7 dB
POWERSTATUS = 00 for OFF, 01 for ON
3535 Arrowhead Drive · Carson City, NV 89706
775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
21
Notes
22
Warranty
Warranty
All BG loudspeaker systems are warranted to the original purchaser for life against defects in materials and manufacture when used in properly designed systems. The warranty is ve years for the BGX-A2 amplier.
Please record your loudspeaker’s information below for future reference.
Model: ______________________________________________________________________________________
Serial Number: ______________________________________________________________________________________
Purchase Date: ______________________________________________________________________________________
Authorized Dealer: ______________________________________________________________________________________
As part of our policy of continual product improvement, BG reserves the right to change or discontinue any specications or parts associated with any of its products without advanced notice.
Thank you again for choosing BG loudspeakers!
3535 Arrowhead Drive · Carson City, NV 89706
775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
23
T
he Power of Clarity
3535 Arrowhead Drive · Carson City, NV 89706
775-884-1900 ph · 775-884-1276 fx · www.bgradia.com · sales@bgradia.com
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