Product Description

35mm VU Meter Stereo Audio Level Indicator Audio Meter Backlight Adjustable + Driver Board For HiFi Amplifier


Selling point:

1. The VU meter is the most widely used volume meter at present. It uses the effective value of the average detector to determine the scale, and can only indicate the quasi-average value of the signal, and the human ear's perception of the loudness of the sound is closer to the VU meter. , so many people like to install a VU meter on the power amplifier

2. Responsive, wide-range voltage regulator circuit

3. Work performance is more stable

4. Using high-quality materials, the quality is guaranteed

5. The VU meter head is better, and the needle swings quickly


Product parameters:

Product name: VU meter driver board

Model: VU02

Power supply: AC/DC12-15V ≥5W

Signal input: 0.775V ≤|

Backlight power output: 12V 50mA*2≤


Instructions for use:

1. AC/DC12-15V power supply

2. L, G, R: These are the two-channel input terminals for the low-level signal of the driver board, which can be connected to the audio of the audio source equipment such as mobile phones, computer sound cards, and front-end devices (the signal is the signal that can be heard by the earphones). When wiring L, G, R correspond to the left, ground and right channels of the audio source device respectively. Note: It cannot be connected to the output of the power amplifier.

3. Adjustable power "5K-V" is to adjust the brightness of the backlight of the vu meter

4. Adjustable resistors "50k-1" and "50k-1" respectively control the beating amplitude of the pointer of VU meter 1 and VU meter 2


Debug method:

Level meter, previously mainly used for tape recording, monitoring sound loudness, there are two standards 0DB=0.775 and 0DBV-1V, to prevent overloading and first distortion during recording

1. Debug the level meter. Find a signal generator. Adjust the output frequency of 1KHz signal to 0.775v, and connect the signal input of the driver board. The pointer of the meter head points to the instrument panel 0DB.

2. The debugging of the VU meter, the adjustment of the VU meter is much simpler, the driver board is connected to the audio signal, and the adjustable resistance on the driver board is adjusted, so that the loudness and rhythm of the ear to the sound are synchronized with the pointer, and the pointer swing range is moderate. At the maximum sound, the pointer points to the %100 position of the sign or the maximum value of the sign scale"



Welcome to our store!
 
We are a professional worldwide wholesale company, with our own factory located in China.
 
We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet.
We accept PayPal only.
 
Payment must be received in 7 business days of auction closing.
 
Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
 
Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.
  • Item will be shipped out within 48 hours upon receipt of your payment.
  • The shipping time details, please read the shipping and delivery together with the price.
  • We ship to your PayPal address. Please make sure your PayPal address is correct before you pay.
  • Considering the cost of business and easy shipping, usually the item is packed in retail packaging.

CountryShipping Time

Working Days + Saturday 
+ Sunday

5-78-1516-2021-2526-30>31
United StatesRate(item arrived)5.1%50.1%29.6%10.5%4.7%Refund
United KingdomRate(item arrived)9.9%63.2%19.1%3.4%4.4%Refund
AustraliaRate(item arrived)21.4%50.0%14.3%7.2%7.1%Refund
FranceRate(item arrived)10.5%28.6%43.8%10.1%7.0%Refund
GermanyRate(item arrived)11.1%22.2%30.3%20.9%15.5%Refund
CanadaRate(item arrived)0.0%47.1%31.4%17.6%3.9%Refund
SpainRate(item arrived)3.7%24.1%48.2%13.8%10.2%Refund
If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning.
 
We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately.
If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends).
 
Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
 
Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
About Us
Welcome to our store!
 
We are a professional worldwide wholesale company, with our own factory located in China.
 
We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet.
Payment
We accept PayPal only.
 
Payment must be received in 7 business days of auction closing.
 
Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
 
Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.
Shipping
  • Item will be shipped out within 48 hours upon receipt of your payment.
  • The shipping time details, please read the shipping and delivery together with the price.
  • We ship to your PayPal address. Please make sure your PayPal address is correct before you pay.
  • Considering the cost of business and easy shipping, usually the item is packed in retail packaging.

CountryShipping Time

Working Days + Saturday 
+ Sunday

5-78-1516-2021-2526-30>31
United StatesRate(item arrived)5.1%50.1%29.6%10.5%4.7%Refund
United KingdomRate(item arrived)9.9%63.2%19.1%3.4%4.4%Refund
AustraliaRate(item arrived)21.4%50.0%14.3%7.2%7.1%Refund
FranceRate(item arrived)10.5%28.6%43.8%10.1%7.0%Refund
GermanyRate(item arrived)11.1%22.2%30.3%20.9%15.5%Refund
CanadaRate(item arrived)0.0%47.1%31.4%17.6%3.9%Refund
SpainRate(item arrived)3.7%24.1%48.2%13.8%10.2%Refund
Terms
If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning.
 
We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately.
Contact Us
If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends).
 
Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.
 
Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly.
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