Overview
Small Projects Can Sound Awesome
The Dayton Audio KABM-30M 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. DSP programing option and 1 x 30 watts of output, is more than enough power and sound customization to make a small speaker sound great, yet the board is small enough to integrate into nearly any project.
High Quality Audio Performance
The Dayton Audio KABM-30M Bluetooth Amplifier Board delivers high quality sound without drawing a lot power. This is due to the highly efficient Class D amplifier chip. The chip 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 KABM-30M includes a built-in Bluetooth 5.0 module with DSP programing option with KPX board (sold separately). The advantage of Bluetooth 5.0 is its low power consumption which prolongs the playtime of battery powered builds. 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 KABM board to be mounted in a metal enclosure with the included external antenna or a short rubber antenna kit (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 KABM-30M is also CE and FCC ready for certification purposes.
Easy Installation
Due to the overall audio performance and built-in Bluetooth with DSP Programing option, this amp board has almost endless application possibilities. Included with the KABM-30M are two wire harnesses: one for DC power and the other for connecting to a speaker. For many users, these cables are all that is needed to complete a project. Since the KABM series includes all the wiring harnesses for additional functions it speeds-up the installation process and creates confidence for beginning builders because there's no need to solder or troubleshoot loose and unstable connections on the board. Dayton Audio also offers a variety of accessories with robust features to make installation even easier. Find out more about optional accessories below.
Endless Applications
Due to the overall audio performance and built-in Bluetooth with DSP Programing option, 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 wiring harnesses. Examples of applications include:
Function Cables Make Projects Ready to Build
Don't worry about finding the right plugs and connectors. The KABM-30M comes with all the cables below with everything your need to complete a project without having to solder connectors to wires.
Package Includes
- One Dayton Audio KABM-30M Bluetooth Amplifier Board
- One 20" 2-conductor power cable with a 2.1 x 5.5 mm tip positive DC coax jack attached
- One 4-conductor speaker cable 20"
- One Bluetooth external stick-on antenna with 5" pigtail
- One 20" Aux input cable with 3.5 mm stereo jack
- One 20" Aux output cable with 3.5 mm stereo jack
- One 20" cable with blue LED
- One 7.5" cable for the volume control
- One 10K volume control with knob
Specifications:
- Power output (w/ 15 VDC power supply): 30W @ 4 ohms
- SNR: 91 dB Line in 1 x 30W @ 4 ohm, A-weighting
- THD: 0.132% @ 4 ohms, 2W, 1 kHz
- Line Input sensitivity: 0.775V
- Frequency response: 22 to 20,000 Hz (±3 dB)
- Impedance: 3-4 ohms
- Bluetooth range: 50 ft.
- Stereo full range audio line output: Volume controls doesn't effect the output
- Recommended power supply: 12 to 16 VDC, 4A
- Board mounting holes center to center spacing: 3.53" x 1.03" (89.66 x 26.16 mm)
- Hole diameter: 0.14" (3.5 mm)
- Dimensions: 3.75" L x 1.25" W x 0.5" H
OPTIONAL ACCESSORIES
KABM Integration on KABM Amplifier Boards
While your KABM amplifier sounds great out of the box, the KABM DSP Control software is compatible with KABM amplifier boards (KABM-215, KABM-30M) when combined with a KPX programmer and the free KABM software offers extensive DSP customization with no experience required. The software provides simple control of 10 band of PEQ, High Pass Filters, Low Pass Filters, Compressor / Limiters, Bass Effects and more. KPX Programmer connection is only needed temporarily, DSP presets can be saved to the KABM amplifier itself and the programmer can be removed. This also means that one programmer can program as many amplifiers as needed. The KPX programmer firmware must must be upgraded to work with the KABM boards and KABM software. Refer to the KPX (325-139) user guide for instructions.
What do I need to connect my KABM Amplifier to KABM?
- A Windows PC / Laptop with available USB Port
- The free KABM download
- A KPX programming board
- A KABM Amplifier and recommended power supply
- KABM-215, KABM-30M
- A USB cable with one end being USB Type C
- The other end can be either type A or type C, depending on what type of port you have on your computer
Optional Li-Ion Battery Charging Board
The Dayton Audio LBB-3v2 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.
Please note: When removing batteries from the LBB-3v2, 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 Standoff Kit
The PC Board M3 Standoff Kit is perfect for stacking multiple PC boards that are the same size, like the a KAB amp board on top of the KAB-BE battery board. Stacking PC boards enables you to use a smaller project box to install your project in. These standoffs will secure a single PC board, or a stack, if you use it with KAB-AB mounting bracket. They both use the same M3 thread. The kit features eight 16mm studs, eight 10mm studs, and 4 Phillips screws.
High Performance Power Supply
To meet the wattage output as listed in the specifications, using a 15V 4A 120-057 is recommended. The power supply accepts inputs 100-240 VAC. Approved/listed by all major safety agencies; UL, CUL, and CE. Features a 4 ft. detachable AC input cord with a 4 ft. 2.1mm x 5.5mm x 9mm, center positive connector DC cable. This power supply can also be used with the LBB-3v2.
Additional Resources
We pride ourselves on being an authority in the speaker building and DIY community. With over 60 years of combined engineering experience, our team of engineers is here to help with your build. Below are some useful tools to get you started.
Get Inspired and Learn From The Best
Parts Express is a leading supplier in raw drivers, speaker components, and resources for speaker builders. Whether you are a seasoned vet or someone looking to find a new hobby, Parts Express has the gear and resources you need to complete your next project. The large community of speaker builders on our Tech Talk forum allow you to learn from some of the best in the business. For more inspiration, check out the Project Gallery which showcases a variety of designs from the speaker building community.
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