<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><p class="MsoNormal"> <strong></strong> </p> <div style="text-align:center;"> <br /> <br /> </div> <div style="padding:15px;border:1px solid #AEAEAE;"> ZK-1002L 2x100W Mini Dual Channel Speaker Digital Power Amplifier Board Wireless Audio Stereo Bluetooth-compatible 5.0 Amp<br /> Feature:<br /> 1. Bluetooth-compatible5.0 version, with higher transmission efficiency and longer transmission distance.<br /> 2. The output audio is filtered, using universal filter components, high-quality sound quality.<br /> 3. Large-volume black gold heat sink to ensure efficient heat dissipation.<br /> 4. The potentiometer adjusts the volume, with a switch, it is convenient to control the volume, which is very suitable for DIY speakers.<br /> If it is a metal box, the Bluetooth-compatible antenna needs to be led out.<br /> 5. The copper DC connector is adopted, which can bear large current and does not generate heat.<br /> 6. 4*470uF green gold capacitors ensure the storage capacity, and continuous stable power supply is the prerequisite for good sound quality.<br /> 7. The free DC head with cable can be compatible with the input power interface of this product, even if you don't have a DC head adapter or battery, you can easily connect.<br /> <br /> Specification:<br /> Product name: Mini version with filter 2x100W Bluetooth-compatible digital power amplifier board<br /> Product model: ZK-1002L<br /> Chip solution: Domestic<br /> With or without filter: Yes<br /> Adapted power supply voltage: 5-24V (optional 9V/12V/15V18V/24V and other adapters, high power recommended high voltage)<br /> Adapted speakers: 50W-300W, 4Ω-8Ω<br /> Number of channels: Left and right dual channels (stereo)<br /> Bluetooth-compatible version: 5.0<br /> Bluetooth-compatible transmission distance: 15 meters (unobstructed)<br /> Protection mechanism: Self-recovery overheating protection, self-recovery short-circuit protection<br /> Voltage:<br /> 12V - 8 ohm speaker/24W (left channel) +24W (right channel), 4 ohm speaker/40W+40W<br /> 15V - 8 ohms/32W+32W, 4 ohms/more than 60W+60W<br /> 19V - 8 ohms/64W+64W, 4 ohms/more than 80W+80W<br /> 24V - 8 ohms/72W+72W, 4 ohms/more than 100W+100W<br /> Product weight: 85g<br /> Product size: 69x3x22mm<br /> <br /> Tip: <br /> Only when the audio input is enough and the power supply voltage/current is enough, there will be enough output power.<br /> The higher the power supply voltage, the higher the relative power, and speakers with different impedances will have different output powers.<br /> In the case of sufficient voltage and current, the greater the ohms of the speaker, the lower the relative sound power, please pay attention!<br /> <br /> Precautions for use:<br /> The shell is a material package, you need to assemble it yourself, and a screwdriver is provided in the material package.<br /> The power switch on the board is a standby switch. After the switch is turned off, the machine is in a low-power standby state. To completely turn off the power or unplug the DC plug on the machine if it is not used for a long time.<br /> <br /> Question answers:<br /> 1. How to choose the power source?<br /> The board's power supply is crucial.The higher the voltage, the greater the current, the more power output, if you only have 12V 1A, this can carry 3-4 inch speakers.If you are above 19V 5A, with 8-10 inches no problem, power must be highly regarded.If the voltage is too low, the sound will easily cause distortion after amplification. If the current is too low to carry the speaker, the voltage will be pulled down, and the work will be abnormal or the sound quality will be poor.<br /> It is recommended to use 18V19V24V power supply with current above 5A.If you only have 9V12V or 1A 2A power supply, you can also use it with low power. Be careful when using it at the maximum volume, it may cause distortion and affect the sound quality.<br /> 2. How to choose the speaker?<br /> Common speakers are usually 8 ohms, can not distinguish between positive and negative polarity, the effect is the same, 4 ohms can also be used.If your horn power is small, it may be between 10W and 30W can also be used. The power supply voltage is small to prevent the speaker from burning down after playing loudly. For example, choose the power supply below 15V.If you are a 50W-300W speaker, don't worry about the speaker burning problem, you can choose a 12-24v power supply, the higher the selected voltage, then the greater the output sound or power.<br /> 3. How to connect Bluetooth-compatible?<br /> Power up the power amplifier board, connect to the speaker, rotate the audio knob indicator light, turn on the phone Settings -- Bluetooth-compatible -- search to "bt-wuzhi", and then click connect, after connecting successfully, there will be ding dong prompt sound, at this time for Bluetooth-compatible mode, play music can, next time on the power will automatically connect.<br /> 4. It's okay if the voice is small, but when the voice becomes louder, the voice becomes muddy?<br /> The sound is distorted, please change to a higher voltage adapter power supply.<br /> 5. It's okay if the voice is small, but when the voice becomes louder, the voice freezes?<br /> The input power is insufficient, and the power supply itself is protected against intermittent power failure. Please replace it with a higher-power power supply; or if the power is too large, the power amplifier board generates serious heat and thermal protection occurs. Reduce power usage or enhance heat dissipation.<br /> <br /> Note:<br /> Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!<br /> Please allow 1-2cm measuring deviation due to manual measurement.<br /> </div> <div style="text-align:center;"> <br /> <br /> </div> <div style="padding:15px;border:1px solid #AEAEAE;"> 1 X Power Amplifier Board Set<br /> </div> <p style="text-align:center;"> <br /> <br /> </p> <p> <br /> </p> <p style="text-align:center;"> </p> <p class="MsoNormal" style="text-align:center;"> &nbsp; </p> <p> <br /> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>Dear Valued Customers,</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>Thanks for choosing E-jia Store.&nbsp;Please kindly help check goods condition before&nbsp;sign for package.&nbsp;</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>If any question about goods,&nbsp;please take photos or videos, then contact&nbsp;us before opening a dispute,&nbsp;problems will be solved at first time.&nbsp;</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>If Satisfied With Our Products, Kindly Leave&nbsp;A 5-Star Rating And Share With Your Friend.&nbsp;</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong><br /> </strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong> </strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong><b><span style="font-size:32px;background-color:#9933E5;">Answers to some frequently asked questions</span><span style="font-size:32px;background-color:#9933E5;">：</span></b><b></b> </strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>1.Do <span style="color:#337FE5;">Bulk CSV/Excel</span> drop shipping (we have discounts for large orders)</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>2.Fast delivery in 24-48 hours</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>3.No invoice or receipt included (if you want, we can provide)</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>4.If choose DHL/FedEx,&nbsp;this is not including DHL remote cost/custom duty.</strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong><span style="color:#337FE5;">5.Zip code starts with 51/52/07/35/38, can't send the order from the Spanish warehouse,you can choose ship from China.</span> </strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>6.If you can't find the product you need in our store, contact us, we will help you find.<strong></strong> </strong> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <br /> </p> <p class="MsoNormal" style="color:#222222;font-family:&quot;font-size:14px;"> <strong>W e c h a t: xixihahawoshixiexie</strong> </p> <strong><br /> </strong> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p style="font-size:13px;font-family:&quot;vertical-align:baseline;background-color:#FFFFFF;"> <br /> </p></div><br /><div style="font-size: 28px; font-family: tahoma, geneva, sans-serif; font-weight: bold; padding: 2px 2px;"> <kse:widget data-widget-type="relatedProduct" id="1005000001113377" title="hot sales" type="relation"></kse:widget> </div></div></div>