CHANNEL VISION WA-321 1 to Many Wireless Audio Transmitter and Receiver Instructions

INSTRUCTIONS

WA-321

1-to-Many Wireless Audio Transmitter

WA-361

1-to-Many Wireless Audio Receiver

©2010 CHANNEL VISION TECHNOLOGY

The WA-321 1-to-Many Wireless Audio Transmitter and WA-361 1-to-Many Wireless Audio Receiver make it possible to create a distributed audio system without running wires from one room to another. The WA-321 can accept either line level or speaker level audio, making it easy to distribute signals to the rear speakers of a surround sound system. The transmitter can link to multiple receivers allowing music to be distributed to multiple locations simultaneously. To avoid interference, the WA-321 can broadcast over 8 different transmission channels.

Features:

• Wirelessly transmits audio up to 300ft.
• Line-level and Speaker-level inputs (WA-321)
• Standard Line-level audio outputs (WA-361)
• 8 transmission channels
• Easy installation and linking

WA-321

1. Antenna… Transmits RF signal to the receiver.

2. Speaker-Level Input… Accepts speaker-level input from an amplifier.
   The terminal pinout is: L + (Left Positive)
   L – (Left Negative)
   R – (Right Negative)
   R + (Right Positive)

3. Power/Link LED… Indicates power and link activity.

4. Link Button… Press to begin the linking process. Press the link button on the receiver to complete the process.

5. Power In… Connect power supply here.

6. RST… (Not used).

7. Audio In… Connect audio source here.

8. Signal LED… Illuminates when signal is present.

WA-361

1. Antenna… Receives RF signal from the transmitter.
2. Link LED… Indicates when receiver is linked to a transmitter.
3. Power LED… Indicates power.
4. Link Button… Not used on WA-361, the link button on WA-321 is used to change the broadcast channel.
5. Reset Button… Press to reset receiver.
6. Power In… Connect power supply here.
7. Audio Out… Connect audio amplifier here.

WA-321 Rear Panel Features and Connections:

WA-321

a) Input Switch…
Place in the down position when using speaker-level inputs and up position when using the line-level inputs.

Choosing the best input for the application…
Speaker-Level Inputs: All home stereo amplifiers have speakers outputs which can be used to feed the speaker inputs of the WA-321 even when line-level outputs are not available. These inputs are also perfectly suited for wireless home theater speaker applications where the relative volume level of all speakers needs to be determined by the master volume control of the A/V receiver.

Line-Level Inputs: All standalone audio equipment and many A/V amplifiers have line-level outputs which can be connected to these inputs. These are generally “fixed” level signals which means that some kind of volume control will be needed on the output of the amplifier connected to the WA-361.

b) J8 & J9 Audio Sense Jumpers…
Set to pins 1&2 to enable audio-sensing.
Set to pins 2&3 to disable audio-sensing.

When audio-sensing is enabled, the transmitter will mute whenever there is no input audio present.

When audio-sensing is disabled, the transmitter will never mute, even if there is no audio input.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.
2. Keep these instructions for future reference.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this device near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with these instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. This apparatus must not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus.
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.
12. Unplug this apparatus during lightning storms or when unused for long periods of time.
13.

| CAUTION|
---|---|---
RISK OF ELECTRIC SHOCK
DO NOT OPEN

Warning: To reduce the risk of electric shock, do not remove the cover (or back), no user serviceable parts inside, refer servicing to qualified service personnel.

Accessories & Complementary Products (sold separately)

  A0240… 2-channel 40 Watt amplifier. It can be used to power a small 1-room audio system or integrated with Channel Vision’s A0302 to provide supplemental power to low power distributed audio systems.

  VC-302… Impedance Matching Volume Control The VC-302 is an impedance matching volume control with an IR receiver knockout. The knockout allows Channel Vision’s IR-2400 to be integrated with the volume control for applications that require IR repeating. The VC-302 comes with white, ivory, and almond knobs and face plates to easily match other wall plates in the room.

  In-wall and In-ceiling Speakers… Channel Vision offers a full line of premium in-wall and in-ceiling speakers. These speakers are perfect for whole- house music or home theater applications.

Linking the WA-321 to the WA-361

The WA-321 and WA-361 operate on a 1-to-Many broadcast basis. When the WA-361 is within range of the WA-321, it will automatically detect and receive the audio signal. If distortion or reception problems occur, press the “Link” button on the WA-321 to change the broadcast channel. There are 8 possible broadcast channels to choose from.

WA-321

Make sure you have steady audio source playing into the WA-321.

The WA-321 can broadcast on 8 different channels. If you encounter interference, press the link button on the WA-321 to skip to a different broadcast channel.

WA-361

The WA-361 will automatically detect the broadcast signal of the WA-321.

WA-321 Installation

The WA-321 can be installed in the wall using a standard 2-gang junction box or low-voltage mounting ring. For surface mounted or free-standing applications, it can be installed in the back box provided.
Follow the simple illustrations below.

In-Wall Installation

1. WA-321
2. Mounting Plate (sold separately)
3. Standard 2-gang ring or j-box (not included)

Align the tabs of the spring plates with the holes in the top and bottom flange of the mounting plate. Push on the face of the WA-321 until it snaps securely into the mounting plate.

Free-Standing Installation

1. WA-321
2. If necessary, remove the screws and metal mounting hardware.
3. Use the same 4 screws to attached the back box.

WA-361 Installation

The WA-361 can be installed in the wall using a standard 1-gang junction box or low-voltage mounting ring. For surface mounted or free-standing applications, it can be installed in the back box provided.
Follow the simple illustrations below.

In-Wall Installation

1. WA-361
2. Mounting Plate (sold separately)
3. Standard 1-gang ring or j-box (not included)

Align the tabs of the spring plates with the holes in the top and bottom flange of the mounting plate. Push on the face of the WA-361 until it snaps securely into the mounting plate.

Free-Standing Installation

1. WA-361
2. If necessary, remove the screws and metal mounting hardware.
3. Use the same 4 screws to attached the back box.

Using the WA-321 & WA-361 in a Home Theater

The WA-321 can accept the left/right surround speaker outputs from a home theater amplifier and transmit the signal to the WA-361. The WA-361 can then output the signal to a small amplifier like the A0240 which powers the speakers. The volume level of the surround speakers will be raised and lowered by the volume control of the home theater amplifier.

1. Front Left
2. Center
3. Front Right
4. Speaker Wire
5. Home Theater Amplifier
6. Amplifier
7. Surround Speaker Outputs
8. WA-321

1. Surround Left
2. A0240
3. Surround speaker are powered by the A0240, but the volume is controlled by the home theater amplifier.
4. WA-361
5. Surround Right
6. Speaker Wire

Using the WA-321 & WA-361 for Distributed Audio

These wireless audio products make it easy to transmit audio from one room to another. Connect any standard audio component to the input connectors of the WA-321 in Room 1, and use the RCA outputs of WA-361 receivers to feed amplifiers in several different rooms. If a fixed gain amplifier is used (such as the A0240), a volume control like the VC-302 will be needed to adjust the volume level in the remote rooms.

Room 1

1. Audio Source
2. WA-321

Room 2

1. A0240
2. WA-361
3. VC-302
4. Speaker Wire

Room 3

1. A0240
2. WA-361
3. VC-302
4. Speaker Wire

Troubleshooting:

Problem: Hum in System

Troubleshooting: Plug all parts of the system into the same outlet to see if the hum goes away.

Cause: The different components in the system are connected to different electrical grounds. This forces electrical currents to find alternate paths to ground causing an audible 60Hz hum.

Solution: Plug products into an electrical circuit with a common ground. If it can be done safely, consider lifting the ground with a ground lifting plug.

Problem: Audio is cutting out and distorted.

Troubleshooting: Try moving the transmitter away from other RF transmitting sources that may cause interference, such as cordless phones, wireless network devices, or microwave ovens.

Cause: Other devices that transmit RF signals or emit interference near the same broadcast frequency can disrupt the wireless audio transmission.

Solution: Consider relocating the transmitter or receiver away from the interference. Or, press the Link button on the wireless transmitter to force the system to switch to a different broadcast channel.

Problem: Can’t link to the transmitter, or audio is cutting out.

Troubleshooting: Check the source, is it sending a signal? Consider setting the jumpers on the transmitter (WA-320/WA-321) to the “disable audio- sensing” position during setup procedure (see Rear Panel Features and Connections section). This will ensure that the transmitter will not mute during pauses or very quiet passages.

Cause: Either there is no audio going into the transmitter, or the audio is very quiet which is causing the transmitter to mute.

Solution: Use a known good audio source. If you can’t find any other problems, try using a different source component even if you think your audio source is OK.

Specifications: (typical at 25º C)

General:
Storage Temperature:             -40 to +85º C
Operating temperature:          0 to +55º C

Transmit and Receive:
Input Voltage:                         5 VDC @ 250mA
THD+N:                                 0.7% Max
S/N Ratio:                               80 dB
Audio Latency:                        3.8 ms
Operating Frequency:            2400 MHz
Data Rate:                                1.152 Mbps
Audio Sampling Rate:            48 kHz
Channels:                                 8 (User Selectable)

Transmit:
Transmission Power:              8.5 dB (9.5dB Max)
Modulation Type:                   GFSK
Channel Spacing:                    9 MHz
Max. Audio Input:                  2.6 Vpp
Input Impedance:                   20 kOhm
Max. Speaker Level In:           100 Watts RMS

Receive:
RX Sensitivity:                          -85 dBm
Image Rejection:                      47 dBc
Audio Output Level:                2.6 Vpp
Audio Output Impedance:      16 Ohm
Frequency Response:               20-20kHz +/- 3dB
Adjacent Channel Rejection:   >45 dB

Specifications subject to change without notice

The WA-321 transmitter is compliant with FCC Part 15, subpart C. The WA-361 receiver is compliant with FCC Part 15, subpart B. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
• Modifications not expressly approved by the manufacturer could void the user’s authority to operated the equipment under FCC rules.

Channel Vision WA-321

Tested To Comply
With FCC Standards

FOR HOME OR OFFICE USE

| Channel Vision WA-361

Tested To Comply
With FCC Standards

FOR HOME OR OFFICE USE

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2 Year Limited Warranty

Channel Vision Technology will repair or replace any defect in material or workmanship which occurs during normal use of this product with new or rebuilt parts, free of charge in the USA, for two years from the date of original purchase. This is a no hassle warranty with no mail in warranty card needed. This warranty does not cover damages in shipment, failures caused by other products not supplied by Channel Vision Technology, or failures due to accident, misuse, abuse, or alteration of the equipment. This warranty is extended only to the original purchaser, and a purchase receipt, invoice, or other proof of original purchase date will be required before warranty repairs are provided.

Mail in service can be obtained during the warranty period by calling 800-840-0288 toll free. A Return Authorization number must be obtained in advance and can be marked on the outside of the shipping carton.

This warranty gives you specific legal rights and you may have other rights (which vary from state to state). If a problem with this product develops during or after the warranty period, please contact Channel Vision Technology, your dealer or any factory-authorized service center.

www.channelvision.com

234 Fischer Avenue, Costa Mesa, California 92626 USA
(714)424-6500 • (800)840-0288 • (714)424-6510 fax
email: [email protected]

500-227 rev I

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