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Audio Spectrum 16x3 Red/Green/Blue DIY Kit 1603 Level Indicator Voice Spectrum Lights DIY Voice Sound Module

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An audio indicator that bounces with music.


Parameter Value
Model SL-1603
Operating Voltage DC 5V
Operating Current 20-270mA
Standby Current <=5mA
Signal Input Way 3.5mm Audio Wire
Signal Choose Way Microphone first
LED Color 5mm red, green, blue
LED Array line 3, row 16
LED Brightness 16 level adjustable
Peak Keeping yes
PCB Size 158*34.8mm
PCB Mounting Hole 3mm
PCB Hole Distance 151.9*28.7mm
Note: LED should be the same color in one line/row

Component list:

NO. Name PCB Silk Screen Value QTY
1 Metal film resistor R3 10R 1
2 Metal film resistor RX1—RX16 100R 16
3 Metal film resistor R1.R2 1K 2
4 Metal film resistor R6.R8 10K 2
5 Metal film resistor R7 47K 1
6 Metal film resistor R4 330K 1
7 Metal film resistor R5 470K 1
8 Ceramic capacitor C2—C6 104P 5
9 Electrolytic capacitor C1 220uF 1
10 I.C U1 WD1603 1
11 Power SW S1 Self-locking switch 1
12 Switch cap S1 6*5mm 1
13 Triode Q1 S9014 1
14 Contact switch S2 6*6*13 1
15 Electret microphone MIC1 6050 1
16 Power input socket JK2 3.5MM 1
17 Audio input socket JK1 Stereo 5Pin 1
18 USB to DC Line —— 80CM 1
19 PCB —— 158mm*3.5mm 1
20 LED D11—D163 5mm Red 15
21 LED D11—D163 5mm Green 15
22 LED D11—D163 5mm Blue 15
23 Audio input line Free give 1.2M 1
24 One in two audio line Free give 22CM 1
25 PCB —— 165*35mm 1

Operation Method:
After the power is on, it enters the normal working state,Press and hold the"MODE"key and enter after 2 seconds to Mode selection.

Short press Content selection:
Breathing pattern: The 8 line LED lights up Short press “MODE” Key to Fixed mode
4 seconds without key operation, automatic exit Breathing pattern:
The stronger the audio signal, the brighter the LED Fixed mode:
Brightness adjustable .
There are 16 levels of brightness
Press and hold the"MODE"key.
Turn on the power into Test mode

Download the installation instructions here


Tested by ICStation's Outstanding Partner bzoli5706:

The led spectrum will display the colorful light which will follow your voice frequency:

Learn More Details in the Video:

There are currently no product reviews.

First we should say that ICStation doesn't accept any form of pay on delivery.Items used to be shipped after receiving the order info and payment.

1) Paypal Payment

PayPal is a secure and trusted payment processing service that allows you to shop online. PayPal can be used at icstation.com to purchase items by Credit Card (Visa, MasterCard, Discover, and American Express), Debit Card , or E-check (i.e. using your regular Bank Account). 

We are PayPal Verified 


2) West Union


We know that some of you do not have the Paypal account. 

But please take it easy. You can use West Union payment method.
Learn more at West Union at www.westernunion.com.
For the receiver info, please contact us at orders@icstation-team.com.
3) Bank Transfer / Wire Transfer / T/T

Bank Transfer / Wire Transfer / T/T payment methods are accepted for orders which the total price is up to US$500. The bank will charge about US$60 for the transfer fee if we do the payment in these ways. 

For other payment method, please contact us at orders@icstation-team.com for more details.

1. Yanwen / YunExpress / 4PX / China Post Airmail Service

(1) Due to the high risk of package lost recently, we have to stop using the free shipping way these days. Hope for your kind understanding! And the $5 is for tracking number and delivery insurance ^0^ Enjoy order from us. 

Free Shipping for all orders over $20 ^0^ (with free tracking number and delivery insurance fee)

(2) Shipping time 
Shipping time is 7-20 business days to most of countries; please view below table for exactly shipping time to your location. 

7-15 working days to: Most of Asia countries
10-16 working days to: USA , Canada , Australia , UK , Most of Europe countries
13-20 working days to: Germany , Russia
18-25 working days to: France , Italy , Spain , South Africa
20-45 working days to: Brazil , Most of South America countries

2. DHL/FedEx Express

(1)Shipping Fee: Free for the order which meet the following requirements
Total price of the order >= 200USD or Total weight of the order >= 2.2KG

When the order meets to one of the above requirement, it will be shipped for FREE via EMS/DHL/UPS Express to below country. 
Asia: Japan , South Korea , Mongolia . Malaysia , Singapore , Thailand , Vietnam , Cambodia , Indonesia , Philippines 
Oceania: Australia , New Zealand , Papua New Guinea 
Europe& America: Belgium, Britain, Denmark, Finland, Greece, Ireland, Italy, Luxembourg, Malta, Norway, Portugal, Switzerland, Germany, Sweden, France, Spain, USA, Austria, Canada
Note: Shipping Fee to other countries, please contact orders@icstation-team.com

(2) Shipping Time & Delivery Time

Shipping time: 1-3 days
Delivery time: 5-10 working days (about 1-2 weeks) to most of countries. 

Because the package would be returned to the sender if it had not been signed by the receiver , please pay attention to the arriving time of the package. 


1) APO and PO Box Addresses

We strongly recommend that you provide a physical address for order delivery. 
Because that DHL and FedEx are unable to deliver items to APO or PO BOX addresses. 
2) Contact Phone Number
Receivers' contact phone number is required by express shipping agency for the package delivery. Please provide us with your latest phone number.

3. Note
1) Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. 
2) Chinese Holiday Reminder: During annual Chinese holidays, services from certain suppliers and carriers may be affected, and delivery for orders placed around the following times may be delayed by 3 - 7 days: Chinese New Year; Chinese National Day,etc. 
3) Once your order is shipped, you will receive an email notification from icstation.com
4) Track the order which with tracking number via below links:

YunExpress / Yanwen / China Post: www.17track.net/en
FedEx: www.fedex.com


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Audio Spectrum 16x3 Red/Green/Blue DIY Kit 1603 Level Indicator Voice Spectrum Lights DIY Voice Sound Module