The Dayton Audio KAB-250v4 Bluetooth Amplifier Board makes it quick and
easy to add audio to your project, speaker build, point-of-purchase display,
kiosk, or any location where music or sound enhances 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 5.0 with aptX HD built directly into board -- no need for a
separate module
Wire harnesses make installation quick and simple with no soldering
required -- includes power and speaker cables
Separate ports for powering by battery or direct DC input from a power
adapter
Optional accessories expand functionality and more
High Quality Audio Performance
The Dayton Audio KAB-250v4 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, thus eliminating
the need for a heat sink and reducing its overall size. Its high efficiency
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-250v4 includes a
built-in Qualcomm Bluetooth 5.0 module with aptX HD. The advantage of Bluetooth
5.0 is its low power consumption which prolongs the playtime of battery powered
builds. The streaming audio quality rivals that of CDs since the Bluetooth chip
supports aptX, aptX HD, aptX LL, SBC & AAC. High receive sensitivity with RF
power up to 9 dBm and -90 dBm, and on board antenna insure stable wireless
connectivity up to 15m (50ft.) On board external antenna jack enables the KAB
board to be mounted in a metal enclosure with an external antenna (sold
separately). 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-250v4 is also CE and
FCC ready for certification purposes.
Detail zoom of additional on board connectors.
Easy Installation
Included with the KAB-250v4 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 additional on board
connectors with wiring harnesses (sold separately) available to speed-up
installation and create confident connections, 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.
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. 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.
Extreme Low Standby Power
The Dayton Audio KAB-250v4 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-250v4 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 to 21.5 VDC, and 20 to 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 of 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-250v4 Bluetooth Amplifier Board
One 2-conductor power cable 20"
One 4-conductor speaker cable 20"
One Bluetooth pairing reset push button switch with cable 20"
Specifications:
Power output (w/ 21 VDC power supply): 2 x 50W 4 ohms
SNR: 92 dB
THD: 0.02% 8 ohms, 10W, 1 kHz
Frequency response: 22 to 22,000 Hz (±3 dB)
Impedance: 4-8 ohms
Bluetooth range: 30 ft.
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, 1-5A
Board mounting holes center to center spacing: 3.32" x 2.4" (84 x 61
mm)
Hole diameter: 0.14" (3.5 mm)
Dimensions: 3.6" L x 2.7" W x 0.9" H