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Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

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Car Audio Speaker Phase Meter - Test and Optimize Sound Quality

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<li>Welcome to our shop! </li> <li>The Phase Meter is perfect for safely troubleshooting and testing audio systems. It can test all speakers in your car, including small treble, door speakers, and subwoofers. With its professional manufacturing and high reliability, you can trust its performance. </li> <li>The Phase Meter also has a low battery indicator to let you know when the battery power is running low. </li> <li>One of its key features is its ability to effectively test speaker polarity. This means you can easily determine if your speakers are correctly connected. </li> <li>Specification:</li> <li>- Condition: 100% Brand New</li> <li>- Material: Plastic</li> <li>- Color: Black + Silver</li> <li>- Size: As Picture Shown</li> <li>- Built-in Battery: 1 x 9V 220mAh battery</li> <li>- Package Weight: Approx. 139g/4.9oz</li> <li>How to use the tester:</li> <li>1. The CD included in the package contains 4 sections of test music.</li> <li> - Section 1: Left channel noise signal</li> <li> - Section 2: Right channel noise signal</li> <li> - Section 3: Phase test signal</li> <li> - Section 4: Same as section 3</li> <li>2. Simply put the CD in your car CD player and play section 1 or 2 to check if the left/right channel connection is correct.</li> <li>3. To test the speaker polarity, play section 3 or 4. The speaker will produce a fixed frequency signal. Press the test button on the Phase Meter. </li> <li> - If 3 green lights flash and 1 red light, it indicates that the speaker output is in positive phase (correct connection).</li> <li> - If 3 red lights flash and 1 green light, it indicates negative phase (reversed connection).</li> <li>Package List:</li> <li>- 1 x Phase Meter</li> <li>- 1 x CD</li> <li>100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.</li>

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