Karak Electronics Sotec series, KUT-NA 35, KUT-NA 130, KUT-NA 65, KUT-NA 250 Operating Manual

Network Amplifier

KUT-NA 35/65/130/250/500

Operating Manual

Unpacking and Installations

1

Features

1

Operating elements of Front panel

2

Operating elements of Rear panel

3

System Connections

4

Setting IP Address

6

System Start

7

System Menu

8

Block Diagram

9

Specifications

10

Accessories

10

Warranty Policy

11

Unpacking and Installations

KUT-NA Series Products are made by KARAK Electronics Co., Ltd based on the
experience and technology accumulated for more than 30 years, and can fully meet your
demands.
Before using, please read through this operating manual well in order to fully utilize the function
of this product, and also use the product of KARAK Electronics for a long time with the correct
way of use.
Please be careful not to install the product at following places, as it may cause the trouble.

• Places exposed to direct sunlight, or places close to heating units such as steam, heater, stove
etc.

• Places poorly ventilated, or with much moisture or dust.

Features

• This device is a TCP/IP Network-based Class-D Amplifier for Public Address System, developed by
applying the AoIP Technology which is the cutting-edge digital technology.

• It is a Network Terminal Equipment to run the Speaker by converting the Digitalized sound source

into Analogue after digitally amplifying it at the Network of Public Address System composed of
KARAK Electronics' TCP/IP Network.

• Model Number is given to this product according to the Output Power as follows;

• It can accommodate 16 Units of KUT-NG20 to extend the Output Contacts.

• It can be composed as Ring or Tree Network, and the Reliability of Network is guaranteed by Ring

Redundancy.

• General Ethernet Port supports Auto-MDIX, and there is no need to consider separate Cabling.

• All the function and condition of the Amplifier can be checked through the VFD Display Window.

• It provides 8 Audio Outputs.

• Speaker Output of each Channel is composed of COM, 8Ohm, 75V, 100V.

• Protective function is built-in against the Overcurrent, Overvoltage, and Overheat of the Amplifier.

Operating elements of Front panel

1. POWER LED
It shows the Power Supply status. The Light is switched on when the Power Source is
normally authorized.

2. SHUTDOWN
It brinks if any trouble is found at Audio Output Channel.
It turns off when the trouble is solved.

3. DISPLAY
It is a window to show Main Information. Please refer to the "Menu Explanation"
for more detailed explanations.

4. ROTATING SWITCH
It is a Rotating Switch to select Main Information Menu.
You can select the Display Menu by rotating the switch.

5. GUIDE FOR RACK MOUNT
It is a Guide to fix to the Rack in case of Rack Mounting.

Operating elements of Rear panel

1. It is a terminal to send the Amplified Audio Outputs, and is connected by 2 connectors included in
the product.

2. This is Ethernet RJ45 Port to be connected with KRNET.
(Used for the composition of Tree Network only.)

3. This is Ethernet Optic Port to be connected with KRNET.

Division

Content

Giga Optic

Used for composition of Tree Network

Ring Port1

Used for composition of Ring Network

Ring Port2

4. This is an Input Terminal of AC Power Source.

5. This is a Terminal through which 24V Power is supplied by Lead Storage Battery
in case of Power Outage.

6. This is an IP Setting Switch.

7. This is a 485 Terminal to connect when using KUT-NG20.

8. This is a Power Source Authorization Switch.

Division

Content

Power supply

Power Shut Out

Setting IP Address

System may not be normally operated if you change it thoughtlessly without
understanding of the site, as IP Address is decided according to the site design.

1. There are 2 IP Setting Switches.

2. This means 1 digit of each hex.

3. Input Range is 0~255.

4. {(1st Switch Number * 16) + 2nd Switch Number} means the 4th Digit Value
of IPv4 IP Address.

5. If you divide the 4th value of required IP Address by 16, the Quotient is the first
Switch Value, and the Remainer is the second Switch Value.

Setting Example)
① Set the IP with “192.168.100.3”.
Quotient of is 0 , and Remainder is 3.
So, first is „0‟, second is „3‟.

② Set the IP with “192.168.100.50”.
Quotient of is 3, and Remainder is 2.

So, first is „3‟, second is „2‟.

③ Set the IP with “192.168.100.179”.
Quotient of is 11, and Remainder is 3.

So, first is „B', second is ‟3„.

※ Network IP is 192.168.100.xxx basically.
※ This is the Number Table corresponding to each Number of Switch.

Rotary

Value

0 1 2 3 4 5 6 7 8 9 A B C D E

F

Decimal
Number

0 1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

System Start

1.Set the 4th Value of IP with switch.

* Refer to "Setting IP Address" for more details.

2. Connect with KRNET.

* Refer to "System Connecting" for more details.

3. Connect the Audio Output Terminal.

4. Connect the Power Cable, and press the
Switch for Power supply.

5. Check if POWER ON LED is lit up normally.

6. Check if IP address is normally displayed
as you set.

System Menu

1. Composition of Display Screen is as follows;

2. Menu Area - This is a Title on the Information to be displayed.

3. Information Area - This shows the Information on Title.

4. Menu Explanation

Menu Area

Explanation

Model Name

Shows the Model No. of the Equipment.

IP Address

Shows the IP Address of the Equipment.

MAC Address

Shows the MAC Address of the Equipment.

Firmware VER

Shows the Firmware Version running at the Equipment.

Connection Host

Shows the Connection Status with Host.

<None>

No Connection is made with Host.

<PHY>

Physical Connection only with Host.

<PHY> <KACP>

Physical Connection with Host, and Connection with DiPanos
Program.

5. Event Message Explanation

Message

Explanation

Protection Signal Occur

Occurs when there is some trouble at Channel.
After flashing the message, it scrolls to check if there is any
problem with each Channel.

MENU SECTION

INFORMATION SECTION

Block Diagram

Specifications

Feature

Mentioned items

Audio Output

Model

KUT-NA35

KUT-NA65

KUT-NA130

KUT-NA250

KUT-NA500

Channel

8CH

8CH

4CH

2CH

1CH

Network Port

10/100Base-TX 5Port (UTP)

Gigabit SFP 3Port

(Support Ring Redundancy)

Audio Sampling

48kHz/20Bit

Rated Output

Model

KUT-NA35

KUT-NA65

KUT-NA130

KUT-NA250

KUT-NA500

Rated

35W

65W

130W

250W

500W

Frequency Response

60 ㎐ ~ 20 ㎑ (±3 ㏈)

S / N

More than -90 ㏈

T. H. D

Less than 0.1% (1 ㎑)

Power

AC 220V / DC 24V

Power Consumption

Model

KUT-NA35

KUT-NA65

KUT-NA130

KUT-NA250

KUT-NA500

Consumption

500W

750W

750W

700W

750W

Dimension
483(W)×88(H)×415(D)mm 2H (With Bracket)

420(W)×88(H)×415(D)mm 2H (Without Bracket)

Weight

Model

KUT-NA35

KUT-NA65

KUT-NA130

KUT-NA250

KUT-NA500

Weight

20.6Kg

20.6Kg

17Kg

14.6Kg

12.9Kg

Accessories

Item

Amount

Manual

1 piece

220V power cable

1 piece

Rack-mount kit

2 Set

[Option] SFP optic cable

1~3 pieces

Warranty Policy

1 Year Limited Warranty

The Network Amplifier(KUT-NA Series) is warranted to be free from defects in materials and
workmanship in normal use for a period of one(1) year from the date of original purchase.
During that period, as it option, repair or replace materials at no charge. Product must be delivered to
your dealer or an authorized service center at freight prepaid with the original sales receipt or other
proof purchase.
Warranty excludes finish, normal wear and tear, failure due to abuse or operation outside the specified
ratings.
Warranty applies to original purchaser only.
Warranty gives you specific rights which vary from state to state. For more Information regarding
warranty or service please contact to your dealer.

RETAIN FOR YOUR RECORDS

(Please complete and return to your dealer or an authorized service center)

Name: Age:
Address:
City: State: ZIP:
Serial No.: Model No.:
Date of Purchase : / / Receipt No.:
Dealer Name:
City: State: ZIP:

Main Office and Factory Address

#402-903, 9F Bucheon-Technopark, 193, Yakdae-Dong, Wonmi-Gu, Bucheon city, Kyunggi-Do,
420-734, Republic of KOREA
Tel : [phone]
Fax : [phone]
E-mail : [e-mail]
http://www.karak.co.kr/eng