Kare CS4 User manual

1.003
CS4
User Guide
KARE Audio Products
2.4 GHz Low-latency Wireless Audio with DSP
BY KARE AUDIO

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Table of Contents
FCC Notice ___________________________________________________________________ 2
1 Year Limited Warranty ________________________________________________________ 2
Parts ________________________________________________________________________ 3
Welcome _____________________________________________________________________ 4
Safety Notices ________________________________________________________________ 4
Health Considerations __________________________________________________________ 5
Listening Device Warning _______________________________________________________ 6
Magnetic Warning _____________________________________________________________ 6
Identifying and Using Features ___________________________________________________ 7
Powering the Transmitter _______________________________________________________ 8
Connecting Signal _____________________________________________________________ 8
Ports _____________________________________________________________________________ 8
DSP (Digital Signal Processing) __________________________________________________ 10
DSP Modes _____________________________________________________________________ 10
Selecting DSP Modes _______________________________________________________________ 12
DSP Mode Table ___________________________________________________________________ 12
Audio Delay ______________________________________________________________________ 12
Network & Audio Status _______________________________________________________ 13
Pairing _____________________________________________________________________ 13
Transmitter Placement and Mounting ____________________________________________ 14
Install your Speakers on Your Chair ______________________________________________ 14
Customer Support ____________________________________________________________ 17

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FCC Notice
Any changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. 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.
1 Year Limited Warranty
This 1-year limited warranty covers product failures due to the manufacturer's defects for one year after
the original purchase. The warranty is only valid if the product is purchased from KARE Audio or one of
its authorized resellers. If the product fails within one year of the original purchase, it will be repaired or
replaced at no charge with the same or newer model of equal value.
This warranty includes this product for home use, including speakers, transmitters, and accessories
against defects in material and workmanship. Proof of purchase is required. This warranty is provided at
the discretion of KARE, LLC. and does not cover cosmetic damage or damage due to acts of nature,
accident, misuse, abuse, negligence, or modification.

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Parts
Quantity
Part #
Description
Image
1
610-36
Optical Cable
1
811
RCA to 3.5mm
1
RFA1-HP-C
3.5mm to 3.5mm
1
RFA1-PS
USB Power Adapter
1
RFA1-PC
USB A to Micro USB B
1
RFA1
Transmitter
1
CS4S
Set of Speakers
1
CS4S-PC-L
Power Supply for Speakers
1
VC12
Hook and Loop

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Welcome
Congratulations on your new ChairSpeaker®, designed to help you and your loved
ones watch TV together in a new way. We appreciate your product selection and would
like to use this guide to welcome you to our family. We hope that you will take the time
to read this manual to familiarize yourself with the product. This user guide will assist
you and answer any questions you may have with setting up and using your new
ChairSpeaker.
This product guide will provide the product description, safe operation, installation
instructions, demonstrate different setup configurations, and help you identify the best
option for your situation.
If you encounter some unresolvable issue or have any questions, suggestions, or
concerns, don't hesitate to contact KARE's customer service department for further
assistance.
Safety Notices
All safety and operation instructions should be read and understood before operating
the ChairSpeaker®. It would help if you kept this guide for future reference.
• This product is designed for indoor use only.
• This product should not be operated or submerged in or near water or in areas
with high moisture.
• Clean with dry cloth only.
• Do not subject this product to extreme heat conditions such as radiators, heat
vents, stoves, amplifiers, or any item that produces heat.
• Do not modify any part of the ChairSpeaker system.

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• The power cable should be routed clear of foot traffic and supported clear of
kinking and abrasion.
• Only use ChairSpeaker accessories and attachments with your ChairSpeaker
system.
• Users should not attempt to service this product. Servicing for damages in any
way should only be done by an authorized service agent.
• Do not use damaged products.
Health Considerations
If you have or think you may have any of the following conditions, KARE, LLC advises
you to consult promptly with a licensed physician (preferably an ear specialist) before
use:
• Visible deformity of the ear
• Fluid or drainage from the ear within the past 90 days
• Sudden, rapidly progressing, or fluctuating hearing loss.
• Spells of acute or chronic dizziness
• Hearing loss only on one side that worsened in the past 90 days
• Ear canal blockage, a lasting ear infection, or a plugged-up feeling
• Excessive wax buildup, or a history of excessive wax buildup
• Pain or discomfort in the ear
• Ringing in one or both ears within the last 90 days

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Listening Device Warning
Do not listen to high volume levels for long periods to prevent possible hearing loss.
Listening Devices are intended to amplify sounds in situations that would be difficult
for normal hearing individuals to hear. A listening device is NOT a hearing aid and is
not intended to treat hearing loss. It is not intended to diagnose, treat, cure any
disease, or alter the structure or function of the body. It will not restore normal hearing
and will not prevent or improve a hearing impairment resulting from organic
conditions. Listening devices are designed for occasional and recreational use for
amplifying and filtering sounds that are inherently difficult to hear. If you believe you
have hearing loss, you are encouraged by KARE, LLC to seek help from a qualified
professional. To protect your hearing, avoid having the volume at high levels for
extended periods of time. Permanent hearing loss can result from high sound volumes.
Magnetic Warning
Do not place speakers near a pacemaker or defibrillator. If you have a concern, please
get in touch with your physician. As with all speakers, the ChairSpeaker has a magnetic
field.
For more details, see
http://kareaudio.com/pacemaker

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Identifying and Using Features
❶"Microphone Input" " " " ❺Optical Output
❷"Optical Input"" " " " " ❻"5 Volt In
❸"Coaxial Input" " " " " ❼"Mode Button
❹"Analog Input"

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Powering the Transmitter
Use the included micro-USB cable (RFA1-PC) to power to the transmitter. Audio is not
input on this port. In some cases, the USB port on the back of your TV or audio device
can provide power. If you have "buzzing or hissing" on an audio channel, use the
included wall adapter (RFA1-PS).
Connecting Signal
Choosing the input signal is critical to getting the most enjoyable experience.
First, identify what outputs are available on your TV. If no outputs are on your TV, you
can use a cable or satellite box. Connecting to different devices may have other
features or create an undesirable sound echo.
Digital Optical, RCA analog, and 3.5mm analog cables are included in the box. You
only need one of the provided cables. We have kits for installing other ways; if you
need a specialty kit, please call us at 1-888-277-7941 or visit KAREAudio.com.
Ports on the front of your tv or other devices are generally AUDIO IN and will not send
audio to the transmitter. Connect only to an AUDIO OUT.
Ports
"
❶"Microphone Input
Use microphone (RFA-MP1) sold separately. This port is used when no other
connection method is possible. The microphone will pick up the sound from your TV
and for the transmitter. Feedback is a common issue when used with a ChairSpeaker,
so fine-tuning the placement of the microphone is required. Microphone placement
and speaker volume will need to be adjusted to keep feedback minimum. If you need
help, don't hesitate to contact us.
"
❷"Optical Input
Digital optical input is the most common and most straightforward method for setting
up your system. Plug your device into this port using the provided optical cable (610-

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36). Remove plastic covers from the end of the optical cable before inserting them into
the TV and transmitter. This type of connection snaps in place when securely inserted.
!
!
❸
Coaxial Input
Use cable (RFA-COAX) sold separately. This single RCA coaxial cable is often color-
coded orange or black. You might find some that are not colored correctly, so it's
always best to double-check the labeling of the connection. The output on your TV
may be labeled as SPDIF or digital out.
❹!
Analog Input!
Use either RCA to 3.5mm cable (811) or 3.5mm (RFA1-HP-C) to plug the desired device
into analog in.
When using analog inputs, do not use USB power on your device. Using USB power
from your TV may create a ground loop buzz on the analog channel. It would be best
to use a wall outlet to power the transmitter when using this input. If you are using RCA
jacks from your TV, make sure they are labeled output. Red and White inputs on the
back of your device will not provide an audio signal.
When using the analog output on your device, your TV may control the volume. Check
your TV manual for details.
If you are using the headphone jack on your TV, it may turn off your TV speakers.
Check your TV manual for details.
❺!
Optical Output
The digital optical output is the easiest method for setting up your system with a
soundbar. After setting up your optical input, plug your soundbar or other device using
a 2nd optical cable (610-36) into the optical output. Remove plastic covers from the
end of the optical cable before inserting them into the soundbar or transmitter. This
type of connection snaps in place when securely inserted. The Optical Output port is

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only an optical passthrough. This output does not have sound processing or decoding
on this audio stream.
DSP (Digital Signal Processing)
The digital signal processing in SonicCast RFA1 is designed to improve your audio
experience and simplify setup. The DSP decodes audio, including 5.1 sound, and can
provide the sound enhancements described below.
DSP Modes
Direct Sound
The Direct Sound mode will decode audio and, if required, downmix to 2 channels. No
equalizers, virtualizations, or enhancements are applied to the audio stream.
Voice Priority SS
Voice Priority Surround Sound is a virtual surround sound technique that produces an
airy and spatial sound that mimics a surround sound system while increasing voices so
you can understand the voices. Voice Priority Surround Sound is most effective when
using a digital 5.1 or higher audio source.
Voiceify AI
Voiceify AI is an AI voice quality enhancement using various algorithms together to
maximize speech enhancement with the focus on intelligibility. Voiceify has three
different settings Narrow, Wide, and Full.

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Narrow Voiceify AI
Narrow Voiceify AI focuses its intelligibility algorithms on sounds in the 1kHz to
6kHz range. Narrow Voiceify AI also enables Voice Priority Surround Sound and
Calm Commercial Technology.
Wide Voiceify AI
Wide Voiceify AI applies AI algorithms to voices in the 0.5kHz to 8kHz range.
Wide Voiceify AI also enables Voice Priority SS and Calm Commercial
Technology.
Full Voiceify AI
Full Voiceify AI applies AI algorithms to voices in the entire audio range. Full
Voiceify AI also enables Voice Priority SS and Calm Commercial Technology.
Calm Commercials
Calm Commercials is designed to reduce the sudden increase in volumes seen in
commercials and action scenes. Calm Commercial technology digitally modifies the
input signal volume to a standard full-scale audio level so that you can choose the best
level for you using the volume controls on the receiver, independent of the audio
source.
Calm Commercials uses automatic gain control and dynamic range compressor
functions to improve listening quality. Automatic gain control dynamically adjusts the
volume of the entire input stream so that during loud portions of audio (such as
commercials) the volume is lowered automatically to match other parts of the
audio. Dynamic range compression further enhances voice quality by decreasing the
amplitude range of the audio signal to a smaller scope, making soft bits of the audio
louder which improves your ability to understand speech in the audio stream.
Calm Commercials supports mono, stereo, and multichannel audio. Calm Commercials
is optimized for digital volume variations.

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Selecting DSP Modes
The mode button ❼allows you to set DSP and adjust the delay. The Mode LED
indicates these settings on the top of the transmitter ❽. A short press of the mode
button cycles through the DSP modes.
DSP Mode Table
Mode
Voiceify
Calm
Commercials
Voice Priority
SS
Mode LED
Color
Direct Sound
Off
Off
Off
White
Voice Priority SS
Off
Off
On
Fade Blue
Narrow Voiceify
On
On
On
Solid Blue
Wide Voiceify
On
On
On
Fade Green
Full Voiceify
On
On
On
Solid Green
Audio Delay
If the sound is out of sync, you can add delay to the SonicCast system. Hold the Mode
button for 5-10 seconds until the Mode LED is Solid Purple to enter the delay setting.
While in delay adjustment mode, the Mode LED is solid purple, and a short press of
the button cycles through delay modes. Each time the button is pressed, the Mode
LED blinks a pattern to indicate the current delay mode:
Mode
Mode LED
No Delay
White, 1 Blink
20 ms
White, 2 Blink
40 ms
White, 3 Blink
60 ms
White, 4 Blink
80 ms
White, 5 Blink

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Network & Audio Status
The Status LED ❾indicates the status of both the audio input and if a receiver is
connected.
Audio Input Status
Device Connected
Status LED
Not Connected
No status until Audio
Connected
Breath Red
Connected
No Receiver Connected
Fade Yellow
Connected
Receiver Paired
Solid Green
Pairing
RFA1 broadcasts a pairing beacon when you can add additional receivers. To pair
another receiver, please see the specific receiver guide. Pairing is proximity-based; if
more than one RFA1 is in a location, the receiver should connect to the closest RFA1. If

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you have an issue pairing to the correct RFA1, turn one-off. Pair, then you can repower
the second RFA1.
To pair transmitter with speaker simply press the pairing button for 5 seconds. The
speaker status light will turn solid blue or purple when paired.
2 devices can be paired with one transmitter.
Transmitter Placement and Mounting
Careful consideration should be used when choosing placement for the RFA1. While
the RFA1 should work behind the TV, some TVs contain large metal plates that
interfere with radio waves. Locate the transmitter away from WIFI base stations.
Plasma TVs generate large amounts of RF that may interfere with RF signals.
The transmitter can be wall-mounted with screw holes on the transmitter's bottom or
with the hook and loop.
Another option for mounting is a transmitter shelf. You can order from KAREAudio.com
or call us.
Install your Speakers on Your Chair
After taking the ChairSpeaker out of the box, form into a U-shape. With both ends
about 18" apart. Make sure the side with the power inlet is in your right hand. Stand up
facing your chair and lay the ChairSpeaker over your chair. Press the links against the
chair, so the links conform. Make sure some links go over the back.

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Wrap the speakers around the chair's headrest with the volume knob on the left for the
user at about ear height.

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Next plug the speaker into the wall. You will need to charge your speakers for 4 hours
to get a full charge. You can charge while in uses.
Turn on the speaker using the volume knob located on the front of the left speaker as a
user is sitting in the chair.
Status LED
Mode LED Color
Power Connected, Device Off
Red
Power Connected, Device On, Not Paired
Red with Quick Blue Flash
Power Connected, Device On, Paired
Purple
Device On, Battery, Paired
Blue
Device On, Battery, Not Paired
Flash Blue
*If power is connected battery is charging

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Customer Support
If you encounter some unresolvable issue or have any questions, suggestions, or
concerns, please contact KARE's customer service department for further assistance.
Website: kareaudio.com Customer Support: 1-888-277-7941
Email [email protected]