• Bluetooth v3.0, class 2:33 ‘(10m)
• Supports a2dp stereo profile
• 3.5 mm stereo audio output
• Sleep mode for energy saving
• Wireless music receiver connects a 3.5mm
• Headphone jacks
• Use with home stereos/speakers, car stereos, headphones (etc.)
• One touch connect button for easy device pairing
• Up to 8 hours of continuous music playback or with a mini-USB charger
• Sleep mode for energy saving
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Mini Portable 3.5mm Bluetooth Auto Audio Receiver Stereo Bluetooth AUX Converter RCA USB For TV PC Car Kit Wireless Adapter Description: Speaker Bluetooth receiver is a high cost-effective Bluetooth stereo receiver, which supports digital products with Bluetooth functions such as iphone, ipad, Android mobile phone, computer and so on, to achieve wireless transmission of stereo. Features: 1. Wired wireless, converting normal speakers into wireless Bluetooth speakers. 2. It can be paired with Bluetooth phone, IPAD and Bluetooth computer to realize speaker wireless. 3. Listen to music, watch movies and play games to enjoy the shock effect. 4, Mini portable, easy to use. Specification: Item Name: 3.5mm Bluetooth Auto Audio Receiver Bluetooth: v2.0 + ed specification Output Interface: 3.5mm audio jack Receiving Distance: barrier free 10m Power Supply Mode: USB Voice Output Sampling Rate: 44.1KHZ and 48KHZ Product Function: Convert Bluetooth signal to 3.5mm headphone jack output audio signal. Product Size: 41 x 21 x 10mm / 1.61 x 0.83 x 0.39 inch Item Weight: 5.9g Package Contents: 1 x 3.5mm audio receiver 1 x 3.5mm audio data line Connection Instructions: 1. The first way, the speaker has no USB interface. Insert the Bluetooth U disk into a charger with 5VUSB interface, then connect the audio cable to the AUX port. 2. The second way, the speaker has USB interface. Insert the Bluetooth U disk directly into the speaker USB interface, then connect the audio cable to the AUX port. Two pairing: 1. Turn on the Bluetooth function of the mobile phone (or computer), search the peripheral Bluetooth devices, find a device named PT-810 in the search results, and then pair it with the password of 0000. 2. Play the music in the phone after the pairing is successful, and then choose the music in the sub-menu to play through Bluetooth. The wonderful music is played out from the speaker!

Product type: Audio Adapters

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• Dimension: 78*44mm
• Impedance: 4 ohm
• Rated Power: 15w
• Frequency Reponse range: FO-6KHz
• Frequency Response: 0.09+/-20%
• Directivity: Omni directional
• Sensitivity: 84dB+/-3 (dB/W)
• Harmonic distortion: 7 (TMD%)

Connect Bluetooth module to the amplifier

Bluetooth module has four output pins, namely, Lout, Rout, Vcc and GND. Right channel (Rout) and left channel (Lout) are connected to pins 2 and 7 of IC2, respectively, followed by presets VR1 and VR2, and capacitors C3 and C5. Pins 3 and 6 of IC2 are connected to feedback capacitors C4 and C6, which are grounded. Bluetooth module is given a power supply of 5V DC .

Connect amplifier to speakers

Output pins 11 and 12 of amplifier IC2 are directly connected to a loudspeaker (LS2). Similar configuration is done with output pins 15 and 16 of IC2 and another loudspeaker (LS1). A capacitor in series with a resistor is connected to each wire for preventing audio signal oscillation.

The parts of a speaker are:

• The cone and the dust cap (the parts that move air and produce sound)
• The spider and the surround (also called the suspension, these are the parts that hold the cone in place while still allowing them to move)
• The magnet and the voice coil (the parts that interact to convert electric energy into motion)
• The basket
• The pole and top plate
• And finally the frame that mounts everything together

How do speakers work?

Speakers work by converting electrical energy into mechanical energy (motion).  The mechanical energy compresses air and converts the motion into sound energy or sound pressure level (SPL).

When an electric current is sent through a coil of wire, it induces a magnetic field.

In speakers, a current is sent through the voice coil which produces an electric field that interacts with the magnetic field of the permanent magnet attached to the speaker.

Like charges repel each other and different charges attract.  As an audio signal is sent through the voice coil and the musical waveform moves up and down, the voice coil is attracted and repelled by the permanent magnet.

This makes the cone that the voice coil is attached to move back and forth. The back and forth motion creates pressure waves in the air that we perceive as sound.

15w Speaker

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• 100% brand new and high quality
• Material: Plastic, Metal
• Color: Black
• 2 pcs LCD TV Speakers Loudspeaker
• 4ohm 10W Speaker
• Rectangle Speaker
• Wire not Soldered
• 70 * 30 * 16.5mm
• Screw Holes Distance: 24 * 63mm
• Quantity: 2Pcs

Connect Bluetooth module to the amplifier

Bluetooth module has four output pins, namely, Lout, Rout, Vcc and GND. Right channel (Rout) and left channel (Lout) are connected to pins 2 and 7 of IC2, respectively, followed by presets VR1 and VR2, and capacitors C3 and C5. Pins 3 and 6 of IC2 are connected to feedback capacitors C4 and C6, which are grounded. Bluetooth module is given a power supply of 5V DC .

Connect amplifier to speakers

Output pins 11 and 12 of amplifier IC2 are directly connected to a loudspeaker (LS2). Similar configuration is done with output pins 15 and 16 of IC2 and another loudspeaker (LS1). A capacitor in series with a resistor is connected to each wire for preventing audio signal oscillation.

The parts of a speaker are:

• The cone and the dust cap (the parts that move air and produce sound)
• The spider and the surround (also called the suspension, these are the parts that hold the cone in place while still allowing them to move)
• The magnet and the voice coil (the parts that interact to convert electric energy into motion)
• The basket
• The pole and top plate
• And finally the frame that mounts everything together

How do speakers work?

Speakers work by converting electrical energy into mechanical energy (motion).  The mechanical energy compresses air and converts the motion into sound energy or sound pressure level (SPL).

When an electric current is sent through a coil of wire, it induces a magnetic field.

In speakers, a current is sent through the voice coil which produces an electric field that interacts with the magnetic field of the permanent magnet attached to the speaker.

Like charges repel each other and different charges attract.  As an audio signal is sent through the voice coil and the musical waveform moves up and down, the voice coil is attracted and repelled by the permanent magnet.

This makes the cone that the voice coil is attached to move back and forth. The back and forth motion creates pressure waves in the air that we perceive as sound.

10w Speaker

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• 2 inch Bright bowl full range speaker small, PU, silver bowl vibration membrane,
• 45mm magnetic 4 ohm 5w, full range the sound quality is good, low frequency also has a very good performance, high cost performance, high sensitivity,
• Suitable for DIY mini speaker / sound system, sounding the trumpet.
• Speaker height: 30.5mm, 40mm magnetic ultra-fine high-quality sound
• Speaker Diameter: 53mm
• Quantity: 2Pcs

Connect Bluetooth module to the amplifier

Bluetooth module has four output pins, namely, Lout, Rout, Vcc and GND. Right channel (Rout) and left channel (Lout) are connected to pins 2 and 7 of IC2, respectively, followed by presets VR1 and VR2, and capacitors C3 and C5. Pins 3 and 6 of IC2 are connected to feedback capacitors C4 and C6, which are grounded. Bluetooth module is given a power supply of 5V DC .

Connect amplifier to speakers

Output pins 11 and 12 of amplifier IC2 are directly connected to a loudspeaker (LS2). Similar configuration is done with output pins 15 and 16 of IC2 and another loudspeaker (LS1). A capacitor in series with a resistor is connected to each wire for preventing audio signal oscillation.

The parts of a speaker are:

• The cone and the dust cap (the parts that move air and produce sound)
• The spider and the surround (also called the suspension, these are the parts that hold the cone in place while still allowing them to move)
• The magnet and the voice coil (the parts that interact to convert electric energy into motion)
• The basket
• The pole and top plate
• And finally the frame that mounts everything together

How do speakers work?

Speakers work by converting electrical energy into mechanical energy (motion).  The mechanical energy compresses air and converts the motion into sound energy or sound pressure level (SPL).

When an electric current is sent through a coil of wire, it induces a magnetic field.

In speakers, a current is sent through the voice coil which produces an electric field that interacts with the magnetic field of the permanent magnet attached to the speaker.

Like charges repel each other and different charges attract.  As an audio signal is sent through the voice coil and the musical waveform moves up and down, the voice coil is attracted and repelled by the permanent magnet.

This makes the cone that the voice coil is attached to move back and forth. The back and forth motion creates pressure waves in the air that we perceive as sound.

5w Speaker

The post 5w Speaker Pair DIY Sound System Kit appeared first on Shopikbuzz.

• Supply voltage: DC 7V-15V
• Output power: 10w + 10w (8 load)
• Efficiency: 90%
• Shutdown Current: 4uA
• Quiescent current; 20mA
• SNR: 86%
• Total harmonic distortion: 5W / 1KHz / 8 —- 0.1%
• Frequency range: 20Hz-20KHz
• Input impedance: 15K
• Output Impedance: 4-8
• Amplifier board size: 29mm ` 25mm
• Provides best Speaker Sound
• Color: Black

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Specifications:

• Operating voltage: 2.5V-5.5V
• Speaker With:4-8ohms recommended:4 ohms
• Speaker Power :2-8W
• Size:21 x 18 x 3.4mm(L x W x H)
• Color:As the pics show
• Net weight:1g

Application:
LCD TVs, monitors,
Laptop
Portable Speakers
Portable DVD players, game consoles
Phone / speakerphone

Product Information
PAM8403 Amplifier is a small digital amplifier chip, high-definition sound quality highlights the advantages of digital chips, circuit using the most reasonable peripheral configuration, power supply filtering is upgraded to 470uf (some sellers are less did not even 100uf capacitance) 1.6mm glass sheet, the real amplifier board did the most detailed, high-fidelity sound output 3W + 3W, is a rare good product enthusiasts amplifier, potentiometer using original anti-meter body, potentiometer with switch can cut off the power supply directly counterclockwise.

Feature
Power range: DC 2.5V – 5.5V Minimum Output: 3W * 2 Dimensions: 29.5 * 20.2 * 15mm

Note
please make sure the power supply is not more than 5.5V and please don’t do reverse polarity for “+” and “-“, or else, it will burn the board.

Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4Ω, 8Ω small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron!

! ! Note: The left and right channel output of the “negative” and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected (load).

Rated working voltage 2.5 ~ 5V, limit operating voltage 5.5V.

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