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Crystal Cube LED Music Audio Spectrum Level Display Sound Amplifier VU Meter Kit

Item description


WarmTips: This is DIY KIT version which needs you have some welding ability and electronic knowledge to solder, if you want finished version please click: LINK

Features:
  • The music visualizer KS25 spectrum has innovative design and perfect combination of music and art, suitable for both music and electronic enthusiasts, also a delightful art decoration. Please make sure that the audio signal input voltage should be within 5V, or the sound spectrum will be damaged.
  • 16 segment, golden section ratio design and red, yellow, green, blue, orange, pink 6-color LEDs makes great visual effect; Adopts 32M crystal and 1T microcontroller, the color spectrum has high-speed signal acquisition and accurate reaction.
  • The spectrum has 8 kinds of classic display modes and 6-level gain setting, they can be set by key, so can the left and right channels, settings with power-off memory; please adjust input volume and gain to make the display amplitude at an appropriate range (default value 3).
  • 8 kinds of classic display modes: 1. Columnar mode; 2. Columnar with peak holding mode; 3. Columnar with peak, peak upward moving out mode; 4. Mirror mode, from middle to both sides; 5. Single point mode; 6. Peak upward moving out mode; 7. Single peak mode; 8. Mute with all lights on mode(available for testing LED).
  • Key Operation: Short press the key to switch among eight kinds of classic display modes; long press the key for 1 second to adjust among 6-level gains; long press the key for 3 seconds to switch between left and right channels.

8 Kinds of Classic Display Modes:
  • Mode 1: Columnar mode
  • Mode 2: Columnar with peak holding mode
  • Mode 3: Columnar with peak, peak upward moving out mode
  • Mode 4: Mirror mode, from middle to both sides
  • Mode 5: Single point mode
  • Mode 6: Peak upward moving out mode
  • Mode 7: Single peak mode
  • Mode 8: Mute with all lights on mode(available for testing LED)

Product Size: 29 * 4 * 7.5cm


Instructions:
 
1. Please insert the attached connector USB terminal to your computer USB interface, 3.5mm headphones by audio branch into the computer or other device's headphone output jack, the other end of the branch connects audio equipment;
 
2. Gain description: 1-3 levels are gain attenuation, 4 level is 0 gain, 5-6 levels are gain amplification. Please adjust input volume and gain to make the display amplitude at an appropriate range (default value 3);
 
3. If happened to full screen display, please reduce the gain or input volume; if the display still dances when no sound source input, please replace the power supply to test or use computer USB terminal as power supply;
 
4. If the audio input terminal needs to be connected to amplifier output or speakers, please use capacitor and potentiometer to attenuate the signal, and please make sure that the audio signal input voltage should be within 5V, or the sound spectrum analyzer will be damaged.

Note: please do not use counterfeit phone chargers, unstable power supply or other power supplies which have large ripple, or it will cause background noise or damage to the audio analyzer.

Package Includes:
  • 1× KS25 Music Spectrum VU Tower (Kit)
  • 1× USB Cable
  • 1× 3.5mm Male to 2*Female Plug

Parameters

1, 25 segments of the column design, plexiglass
2, KS25 using 1T single-chip, high-speed acquisition of signals, accurate response
3, KS25 increase the voice function, you can set the key to open and close, with MIC independent module,
4, KS25 has 10 drop speed adjustment function
5, 8 kinds of classic mode, key control, with power-down memory
6, 7 level gain settings, the signal can be enlarged or reduced, long press the button to set
7, there are left channel, right channel, MIC mode, set by button
8, fog frosted LED, soft colors
9, red, yellow, green, orange and orange pink, 6 kinds of color combinations
10, white PCB design 

Key operation and instructions

1. Short press: mode adjustment;

long press 1 second: 10 speed adjustment, the top of the LED will display (the default value of 4,1-10, the more bright the slower)
long press 3 second: Level 7 gain adjustment, the bottom of the blue part will have a corresponding display; (default 4)
long press 6 second: channel and voice conversion,
pink LED light Keep on --- left channel (pink L);
red LED light keep on --- right channel (orange R);
orange LED light keep on --- voice activated (voice activated State, line input is automatically turned off)

2,  gain description:

7-level gain adjustment, the right top of the corresponding LED will show the default value of 4,
5 \ 6 \ 7 for the gain to enlarge 1/2/3 times,
1/2/3 for the gain reduction 3/2 times, the default value of 4);

3,  if you do not enter the sound source will be beating, because you use the power supply ripple is too large, please replace the low ripple 5V DC power supply or use the computer USB or charge Po test;

4,  if the audio input connected to the amplifier output or speaker, please use high to low signal attenuation, the audio signal input voltage control within 5V, beyond the damage to the sound column. 
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Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). 

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We provide  return within 30 days for all items you bought on eBay, full refund and return shipping will be provided.

1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).

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Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc.
 
As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.
 
We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience.
Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:
 
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