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VP-240D/VP-120D 

Public Adress Power Amplifier 

 

 

Table Of Contents 

 

 

1.

 

Introduction ............................................................................................

 

2

 

2.

 

Important Safety Instructions ...............................................................

 

3

 

3.

 

Warranty Information .............................................................................

 

4

 

4.

 

Panel Description ...................................................................................

 

5

 

5.

 

Connecting Your System ......................................................................

 

6-8

 

6.

 

Block Diagram ........................................................................................

 

9

 

7.

 

Specification ...........................................................................................

 

10

 

 

 

 

Ⅰ  Introduction

 

 

The VP-240D/VP-120D is designed to meet the special needs of sound contractors with 100V and 70V line systems. 

They also provide low-impedance outputs 4 ohm and 8 ohm for maximum flexibility. The power sources are 24V DC and 

120V/220V/230-240V AC. The VP-240D/VP-120D manufactured in state-of-the-art production processes using oversized heat 

sink in 2 step Fan cooling, also the high precision-quality components such as an ultra low noise 5532 OP amplifiers and 

powerful 3 stage bi-polar output devices with reliable quality power filter capacitors. Amplifier’s protection provided by short circuit 

and open circuit proof, and thermal sensing circuit, also. The power ON/OFF is controlled by main power switch and also 

available by remote control terminal on the rear panel with soft start and suppresses unpleasant noise when the power switch is 

“ON”.   

The  VP-240D/VP-120D  has  attractive  front  panels  with  a  full  complement  of  LEDs  to  output  level  condition.  While  providing 

powerful, accurate and reliable performance as well as outstanding value, your STK amplifier has been designed for many years 

of dependable duty. Please take the time to read this manual before operation to fully realize the features and benefits of this fine 

product. 

 

 

Summary of Contents for VP-120D

Page 1: ...VP 240D VP 120D Public Adress Power Amplifier OWNER S MANUAL ENGLISH...

Page 2: ...ality components such as an ultra low noise 5532 OP amplifiers and powerful 3 stage bi polar output devices with reliable quality power filter capacitors Amplifier s protection provided by short circu...

Page 3: ...te outlet Do not defeat the safety purpose of the polarized plug 9 Grounding If the appliance is equipped with a 3 wire grounding type plug a plug having a third grounding pin this plug will only fit...

Page 4: ...pro com STK LIMITED 1 YEAR WARRANTY STK electronics are warranted to be free from defects in materials and workmanship under normal use for a period of 1 year from date of original purchase During tha...

Page 5: ...ing post connector Connect the 24V DC Battery 100A Type source to these terminal Red connects to battery s positive and Black connects to battery s negative side The internal DC Fuse is equipped with...

Page 6: ...it and represents a dangerous safety hazard 3 Line Voltage Operate from AC mains not more than 5 above or below the specified line voltage Failure to comply may invalidate your warranty 4 Pre Connect...

Page 7: ...en connecting your speakers using each method be sure to pay close attention to proper polarity Although connecting your speaker systems out of phase using the wrong polarity will not damage your spea...

Page 8: ...status of various operating conditions Knowing what these indicator LEDs are telling you will help you to use your STK amplifier 1 Level Meter A level meter for main stage indicates that your signal l...

Page 9: ...9 Block Diagram...

Page 10: ...BALANCED Cooling 2 STEP FAN COOLING Dimension W x H x D Net 483 x 88 x 295 mm Shipping 400 x 550 x190 mm Weight Net 37 Ibs 16 8Kg Shipping 39 68 Ibs 18Kg Power Consumption 1 3 POWER 130Watts VP120D 2...

Page 11: ...11 Notes...

Page 12: ...12 Owner s Manual for The STK VP240D VP120D High Impedance Power Amplifier Printed In Korea APR 2010 STK Professional Audio VP240D VP120D...

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