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CLEARANCE Dayton Audio KAB-250A 2x50W Class D Audio Amplifier Board with Bluetooth 4.0

Dayton Audio
Part #325-104

CLEARANCE Dayton Audio KAB-250A 2x50W Class D Audio Amplifier Board with Bluetooth 4.0

Dayton Audio
Part #325-104  
The Dayton Audio KAB-250A Bluetooth Amplifier Board quickly and easily adds powerful audio to your project, speaker build, point of purchase display, kiosk, or any location where music or sound can enhance the experience. With an output of 2 x 50 watts, there is more than enough power to drive stereo speakers, yet the board is small enough to integrate into nearly any project.
Key Features
  • Efficient 2 x 50 watts of power from the TPA3116 amp chip
  • Bluetooth 4.0 with aptX built directly into board -- no need for a separate module
  • Board includes power cable, speaker cable, and power switch
  • Wire harnesses make installation quick and simple with no soldering required
  • Separate ports for powering by battery or direct DC input from a power adapter
  • 5-year Dayton Audio warranty
  • Optional accessories expand functionality and more
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Overview

Dayton Audio KAB-250A 2x50W Class D Audio Amplifier Board with Bluetooth 4.0

High Quality Audio Performance

The Dayton Audio KAB-250A Bluetooth Amplifier Board delivers high quality sound without drawing a lot power. This is due to the highly efficient TPA3116 Class-D amplifier chip. The TPA3116 operates at 90% efficiency, which becomes a major advantage when powering from batteries as it prolongs the playtime of a single charge. Its ultra-low distortion and pop-free performance make this hi-fi amplifier board an integral asset in any quality audio build.

Integrated Bluetooth

Unlike other amplifier boards, the Dayton Audio KAB-250A includes a built-in Bluetooth 4.0 module with aptX. The advantage of Bluetooth 4.0 is its low power consumption which prolongs the playtime of battery powered builds. The streaming audio quality rivals that of CDs thanks to the addition of the aptX codec by CSR. Designed and built for Bluetooth demonstration purposes, this fully functioning module provides a turn-key approach to Bluetooth certification for consumer goods. If the application of this board is for the hobbyist or industrial purposes then nothing is required to enjoy the full convenience of pairing and streaming high quality Bluetooth audio. The KAB-250 is also CE and FCC ready for certification purposes.

Easy Installation

Included with the KAB-250A are two wire harnesses: one for DC power and the other for connecting to stereo speakers. For many users, these cables are all that is needed to complete a project. Since they have Molex Mini Fit Jr connectors to speed-up installation and create confident a connection, there is no need to solder or troubleshoot loose and unstable contacts. Dayton Audio also offers a variety of accessories with robust features to make installation even easier. Find out more about optional accessories below.

We will customize the name of your Bluetooth amplifier board for free on order quantities of 20 or more, call 1-800-338-0531.

Endless Applications

Due to the overall audio performance and built-in Bluetooth, this amp board has almost endless application possibilities. From hobbyists and DIYers to manufacturers and installation organizations, this Bluetooth amp board has immense flexibility. For orders greater than 20 units, custom OEM Bluetooth pairing names are available -- email info@daytonaudio.com for more details. Even if you bypass the Bluetooth feature, this amplifier board integrates easily into any job because of its array of included and optional wiring harnesses. Application examples include:

Extreme Low Standby Power

The Dayton Audio KAB-250A will remain powered up to 7 days in standby mode even while Bluetooth is enabled. This standby time is approximately 4x longer than the competition due to the use of a high efficiency DC/DC converter which minimizes power consumption thanks to the employment of a micro controller as the PMU (Power Management Unit).

Multiple Power Paths

The Dayton Audio KAB-250A features numerous power options for creative, wireless sound projects. This flexibility eliminates limitations often caused by most other amp boards. Therefore, your design can be cord restricted or truly portable.

For portable applications, there is an optional function cable kit (KAB-FC) which permits the connection of rechargeable batteries to power the board. NiMH, lead acid, or NiCad batteries will recharge straight from the board using a 15 - 24 VDC, 1A power supply. Use extreme caution because the Bluetooth amp board does not provide under/over charge protection and the connected power adapter cannot have an output greater than 30 watts.

Solar charging is also an option, this application requires solar batteries with float (open) voltage with 16.5 - 21.5 VDC, and 20 - 100 watt panel.

Eight AA alkaline batteries can also power this board, but do not connect the recharging feature for this type of use.

The best rechargeable battery option makes use a separate interconnect board from Dayton Audio (KAB-BE) which holds three 18650 Li-Ion batteries. This portable power source is highly recommended since this add-on battery holder board does provide under/over voltage protection. A 19 VDC, 1-5A power supply is your best choice for charging the expansion board. (15 VDC Min required and 24 VDC Max)

Package Includes

• One Dayton Audio KAB-250A Bluetooth Amplifier Board
• One 2-conductor power cable 20"
• One 4-conductor speaker cable 20"

Specifications:
• Power output (w/ 21 VDC power supply): 2 x 50W @ 4 ohms
• SNR: 92 dB
• THD: 0.02% @ 8 ohms, 10W, 1K Hz
• Frequency response: 22 to 22,000 Hz (±3 dB)
• Impedance: 4-8 ohms
• Recommended power supply: 12 to 24 VDC, 4A
• Recommended recharging power supply (NiMH, lead acid, or NiCad) 15 to 24 VDC, 1A
• Recommended recharging power supply (Li-Ion) 19 VDC, (1-5)A
• Plate mounting holes center to center spacing: 3.32" x 2.4" (84 x 61 mm)
&bull: Hole diameter: 0.14" (3.5 mm)
• Dimensions: 3.6" L x 2.7" W x 0.9" H

Optional Function Cables

Use the KAB-FC cables to customize any Dayton Audio KAB project. This four-cable kit comes equipped with Molex Mini Fit Jr connectors for easy termination to the board, and each cable is 20" in length.

• The AUX-in cable with 3.5 mm jack feeds music from any analog source directly to the KAB-250A board, enabling audio play from almost any non-Bluetooth source.

• The volume control with cable lets you manually control sound levels, and mounts into a 0.3" hole.

• The battery cable is for portable projects where AC or 12 VDC car power are not available. Multiple types of rechargeable batteries work with this cable and the board will charge the batteries when using an adapter with 15 - 24 VDC. Output wattage of the power adapter should never exceed 30 watts, as there is no under/over charging protection built in to the KAB-250 board.

• Using the on/off power cable cuts power to the entire board, but still provides power to the connected batteries for charging. An optional SPST switch is needed to accomplish this function.

Optional LED Light Status Cables

The KAB-LED light cable kit includes three different status LEDs that are clear when not in use, but light up blue, red, and green. The blue LED is used as the Bluetooth indicator, the red LED indicates power, and the green LED indicates charging.

Optional Interface Extension Board

The Dayton Audio KAB-INT provides a simple plug and play solution for custom applications. This interface board provides a 3.5 mm AUX-in jack, two USB A female ports for charging external devices, a momentary pushbutton switch that controls the standby function, and LED indicators for power and charging status. With the included 10-pin cable, the interface extension board easily plugs directly into the KAB-250 board.

Optional Li-Ion Battery Charging Board

The Dayton Audio KAB-BE Li-Ion battery charging board holds three 18650 batteries (sold separately). This charging board has built in under/over voltage protection circuits for safe charging and longevity. It balances different voltage between batteries in case one battery discharges faster than the others. A 19 VDC, 1-5A power adapter works best for charging batteries contained in this board. Additional boards can be sequenced together to provide longer playing time.

Please note: When removing batteries from the KAB-BE, the charging adapter must be plugged in momentarily after the new batteries have been inserted. Failing to do so will prevent the amp board from powering up.

Optional L-type Aluminum Bracket

It can be quite difficult to install the audio amplifier board into tight spaces such as portable sound applications. To securely mount the KAB-250A board and improve space efficiency Dayton Audio offers the KAB-AB; an optional L-type aluminum bracket. This aluminum bracket supports vertical and horizontal mounting configurations to satisfy different installation requirements. With four M 3.5 screw lock standoffs, any Dayton Audio KAB board installs easily on the bracket using the four included security screws. Two M 3.5 holes and seven slots give you the versatility to mount the L-type bracket to your project as needed.

Product Details

BrandDayton Audio
ModelKAB-250A
Part Number325-104
UPC848791002618
Unit of MeasureEach
Weight0.39

Product Specifications

Board Type2 Channel Stereo Amp
Power (RMS/Channel 8 ohms)26 - 50 Watts
Special FeaturesBluetooth-Bluetooth with aptX

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