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The SR series of amplifiers offer impressive specifications and features, the case is ruggedly constructed from steel 
and rack mountable for versatility.  All feature two channels,  Switched Mode Power Supply and are suitable for live 
concert, disco, studio etc. 

The front panel includes gain controls for each channel, these are normally illuminated green, but turn to red when 
the associated channel clips. Indicators for protection, signal activity, mode and clip, as well as a mains power rocker 
switch and illuminated HH Logo complete the line up.

The rear panel carries all of the input & output connectors and slide switches for the selection of Mode, Input 

Sensitivity  and  Hi-Pass  filter. The  mains  cord  is  attached  here  either  with  a  Neutrik

  Powercon  or  IEC 

Connector depending on the model.

This manual contains important information on operating your amplifier correctly and safely. Please take some 
time to read this manual to familiarise yourself with the advanced features of this amplifier.

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Unpacking

Inspect the amplifier during unpacking, if any damage is found, notify the dealer immediately. Be sure to save the 
carton and all packaging materials. Should you ever need to return the unit back to the dealer or HH Electronics, 
use only the original factory packing.

Installation

HH  professional  amplifiers  are  designed  for  durability  in  commercial  installations  and  provide  the  quality 
performance required in studio and live performance applications. They are 2U rack height, with 360mm depth, 
designed to mount in a standard EIA 19" rack. Rear mounting ears are provided for additional support. The 
minimum depth required in the rack space is 430mm (to allow adequate clearance for the connectors). When 
using the equipment in a rack, consideration should also be given to cooling. The air flow through the unit from 
front to back should not be obstructed or hindered in any way, so adequate ventilation in the front and rear of the 
rack cabinet is important.

Basic Setup

Rack mount the amplifier in the location where it is to be used, with consideration to accessibility, cooling etc. 
Make all the connections to the input connectors on the desired channels. Select the mode configuration (Bridge, 
Parallel  or  Stereo).  Connect  speaker  cabinets  to  the  required  output  connectors,  paying  attention  to  the 
impedance and phase.

With the power switch OFF and both gain controls set in their lowest position (-0

dB), connect the mains power 

cord to the amplifier, then to a suitable electrical source to allow proper current draw. The amplifier is now 
electrified and on standby status, there is no indication on the amplifier that there is power connected.

Turn ON the power switch, the HH logo, gain controls and the protection indicators are all illuminated, the 
amplifier will now selftest automatically for around 10 seconds. The protection indicators will go out when the test 
is finished. 

Now the gain controls can be raised slowly to the desired settings. 

Switching Off 

After using the amplifier, please adjust the gain controls to their lowest settings (-0

dB), then the amplifier can be 

turned off safely. Turn the power switch to the OFF position and remove the power cord from the electrical 
source.

NOTE: 

 

Do not connect or disconnect from the input signal source when the amplifier is turned ON, damage could occur 
to the amplifier and the speaker.
When the amplifier is connected to the power supply, power is present inside, even in standby mode where the 
power switch is in the OFF position.
If the amplifier is in standby mode without use for over 3 hours, remove the power cord from the electrical source.

INTRODUCTION

Summary of Contents for SCALAR SR Series

Page 1: ...PROFESSIONAL POWER AMPLIFIER WWW HHELECTRONICS COM...

Page 2: ...rucciones Importantes Para Su Seguridad Espa ol Important Safety Instructions Pt 2 Foreword Introduction SR Series Front Panel SR Series Rear Panel SR Series Setup Connections Block Diagram Specificat...

Page 3: ...apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Never break off the ground pin Connect only to a power supply of the type marked on the un...

Page 4: ...nne l assaut ou si inutilis pendant de longues p riodes 14 Seul un technicien agr par le fabriquant est m me de r parer contr ler votre unit Celle ci doit tre contr l e si elle a subit des dommages de...

Page 5: ...technikern durchf hren Eine Wartung ist erforderlich wenn das Ger t in irgendeiner Art besch digt wurde etwa wenn das Netzkabel oder der Netzstecker besch digt wurden Fl ssigkeit oder Gegenst nde in d...

Page 6: ...g n objeto ha ca do dentro del aparato el aparato ha sido expuesto a la lluvia o la humedad no funciona de manera normal o ha sufrido una ca da 15 Nunca retire la patilla de Tierra Conecte el aparato...

Page 7: ...user of the presence of important operating and maintenance Servicing instructions in the literature accompanying the product Dieses Symbol soll den Anwender vor unsolierten gefahrlichen Spannungen i...

Page 8: ...s much as we enjoyed creating it By choosing HH you are joining a brand with heritage dating back to 1968 a brand that helped define the techniques and principles for sound reinforcement and backline...

Page 9: ...using the equipment in a rack consideration should also be given to cooling The air flow through the unit from front to back should not be obstructed or hindered in any way so adequate ventilation in...

Page 10: ...D When the surround is RED the amplifier has reached its maximum power output The distortion is around 0 5 5 PARALLEL INDICATOR shows when the amplifier is in Parallel mode i e acting as two separate...

Page 11: ...ration only the red binding posts are used and the associated speaker load is connected between the two red posts Which ever connections are used the parallel speaker load should be limited to a minim...

Page 12: ...either XLR or Jack 14 CHANNEL 1 LINK this socket is in parallel with CH1 Combi Skt and provides an output signal same as the input signal 15 CHANNEL 2 LINK this socket is in parallel with CH2 Combi S...

Page 13: ...connected to each channel set the mode switch to Stereo connect a speaker cabinet to each channel output and adjust the two gain controls usually set to full power and then control the output from the...

Page 14: ...put CH2 Combi Input CH1 Link XLR M CH2 Link XLR M Attenuator Attenuator Bridge Parallel Stereo Mode Switch Protection Circuit 26dB 32dB Sens Switch Channel 1 Preamp Channel 2 Preamp HI Pass Switch Out...

Page 15: ...20V s 20V s 20V s Damping Factor 8 Ohm Stereo 1 KHz sine 30 10 200 250 200 Dynamic Range 8 Ohm Stereo 5dB 80dB 80dB 80dB S N Ratio 20Hz 20KHz 5dB 90dB 85dB 85dB Crosstalk 8 Ohm Stereo 1 KHz sine 5dB 7...

Page 16: ...t to the speakers will be cut The output signal will return within 10 seconds after the removal of the short circuit 5 AC Local Power Protection if theAC power voltage drops too low 160V in the case o...

Page 17: ...1 2 3 Gnd Gnd Gnd 2 2 1 1 Balanced XLR 6 3mm Balanced Jack 6 3mm Unbalanced Jack Speakon TIP RING SLEEVE TIP SLEEVE HOT COLD GROUND HOT GROUND 1 POSITIVE 1 NEGATIVE 2 NOT USED 2 NOT USED 1 GROUND 2 PO...

Page 18: ...NOTES...

Page 19: ...NOTES...

Page 20: ......

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