KV2 audio SAC2 2 Channel Super Analog Controller User Guide

: June 4, 2024
: KV2 audio

Table of Contents

Important safety instructions
Introduction
Getting Started
Features
Using the System
Specifications
Warranty
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SAC2 2 Channel Super Analog Controller
User Guide
Super Analog Controller – 2 channel KV2 audio SAC2 2 Channel Super
Analog Controller

The Future of Sound. Made Perfectly Clear.
At KV2 Audio our vision is to constantly develop technologies that eliminate distortion and loss of information providing a true dynamic representation of the source. Our aim is to create audio products that absorb you, place you within the performance and deliver a listening experience beyond expectations.

Important safety instructions

Important safety instructions
Before using your SAC2, be sure to carefully read the applicable items of these operating instructions and the safety suggestions.

Read all product instructions.
Keep printed instructions, do not throw them away.
Respect and review all warnings.
Follow all instructions.
Do not use this unit near water, in unprotected outdoor areas, or in rain or wet conditions.
Clean only with a dry cloth.
Do not block any ventilation openings.
Install in accordance with KV2 Audio`s recommended installation instructions.
Do not install near any heat sources such as heat radiators, heat registers, stoves, or other apparatus that produce heat.
Do not defeat the safety purpose of the grounding type plug. A grounding type plug has two blades and a third grounding connector. The third connector is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for the replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the SAC2. The AC mains plug or appliance coupler shall remain readily accessible for operation.
Only use accessories specified by KV2 Audio.
The unit is intended for use in a 19″ rack. Follow the mounting instructions.
Unplug SAC2 during lightning storms or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the SAC2 has been damaged in any way, such as when the power-supply cord or plug has been damaged; liquid has been spilled or objects have fallen into the SAC2; rain or moisture has entered the SAC2; the SAC2 has been dropped, or when for undetermined reasons the SAC2 does not operate normally.
Do not remove top or bottom covers. Removal of the cover will expose hazardous voltages. There are no user-serviceable parts inside and removable may void the warranty.
An experienced user shall always supervise this professional audio equipment.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.

Introduction

SAC2 – part number KVV 987 228 (230V) KVV 987 229 (115V)
Application
Designed as an active crossover equalizer – limiter and controller for the ESD range with superior sound quality
Introduction

Fixed Installations
Portable PA
Speaker protection and level control
Use with any KV2 Audio system as a FOH EQ or with any alternative systems

The SAC2 is a 2-input x 4 output audio controller designed for use with KV2 audio passive and active loudspeakers as well as third-party systems. The SAC2 serves as a 2-way stereo crossover, Master Q, leveler/limiter, or a combination of all three.
The fixed crossover points of either 70Hz or 120Hz can be selected for standard 2 x 2 way configuration, whilst both Low and High outputs can be independently switched into the direct mode, allowing combined crossover, overlap, and full range operation. The Low section also features a special Sub-EQ low-frequency enhancement circuit that can be switched in or out as desired.
The SAC2’s main advantage is its very high audio quality using only KV2 Audio’s new Super Analog technology. The limiter/leveller is a sophisticated circuit operating in a way that stops the maximum level from being exceeded but without the overall operating level but operators still require the highest quality audio performance. The master equalization section features a new Super Analog four-band equalization circuit across the stereo channels as well as feedback issues.
For the best performance where possible use only KV2 Audio components, any other component may negatively affect the sound quality.
Dimensions

Getting Started

Unpacking
Unpack the SAC2 and check to see if there is any damage to it. If you find any damage notify your supplier immediately. Only the consignee may institute a claim with the carrier for any damage incurred during shipping. Be sure to save the carton and all packaging materials for the carrier’s inspection.
Should you ever need to ship the unit, only use the original factory packaging. If the shipping carton is unavailable, contact your supplier to obtain a replacement.
The SAC2 carton should contain:

SAC2 Super Analogue Controller
User’s Guide
IEC Power Cable

Rack mounting
The SAC2 will mount in a standard 19″ rack system. Use four screws and washers to mount the SAC2 to the rack rails. We recommend using a shock-mounted rack for touring use to prolong the life of your SAC2.
To prevent accidental adjustment of settings, or unwanted tampering in a fixed installation, KV2 Audio provides an additional security panel.
AC Power requirements
The SAC2 uses a standard IEC 3-pole AC connector. The device must be connected to a main socket outlet with a protective earthing connection. The SAC2 operates in either 115V or 230V mode. This setup is preconfigured at the factory. The mains plug of the power supply cord shall remain readily operable.
Voltage requirements
The SAC2 operates safely and without audio discontinuity, if the AC voltage stays within the operating window of 90V-130V in 115V mode or 180V-260V when working in 230V mode at 50 or 60Hz. CAUTION: IF THE ON LED DOES NOT ILLUMINATE OR THE SySTEM DOES NOT RESPOND TO AUDIO INPUT REMOVE AC POWER IMMEDIATELy. VERIFy THAT THE VOLTAGE IS WITHIN THE PROPER RANGE. IF THE PROBLEM PERSISTS, PLEASE CONTACT KV2 AUDIO OR AN AUTHORIzED SERVICE CENTER.
Connector wiring
XLR Balanced Input and Output connectors
CAUTION: IF IT IS NECESSARy TO CONVERT BALANCED OUTPUT TO UNBALANCED, IT IS IMPOSSIBLE TO SHORT HOT(2) OR COLD(3) PINS WITH GROUND(1). IN THIS EVENT THE LINE DRIVERS WILL CAUSE PERMANENT DISCONNECTION.

Features

Front panel
Gain
Adjusts the SAC2`s input levels from -15dB to +10dB.
Limiter
Adjusts the maximum output level. When this level is exceeded, the limiter reduces the signal to the desired level according to your setting. The Limiter ensures that this level is not exceeded whilst maintaining the dynamics and signal quality.
A switch by the input connector allows the user to adjust the limiter time (fast or slow).
It adjusts the attack and decay together.
The Limiter level can be adjusted from -15dB to +10dB.
The Limiter function is indicated by Active LED.
High Pass Filter
This switch selects between either a 20Hz or 40Hz high pass filter. It has a slope of 12dB/octave and it is used to protect your subwoofer system from the frequencies that it cannot reproduce efficiently and may cause damage.
Four-Band Equalizer
The four-band EQ section is a unique Super Analog equalization circuit specially designed to highlight the desired band without adversely affecting the overall sound.

Low………………………..Boosts or cuts Low frequencies around 20Hz by +/-15dB
Low-Mid ……………………….Boosts or cuts Low-Mid frequencies around 450Hz by +/-12dB
Hi-Mid …………………………………Boosts or cuts Low-Mid frequencies around 2.5kHz by +/-12dB
Hi………………………………………………Boosts or cuts Hi frequencies around 18kHz by +/-15dB
Notch Filters
Use independent left and right notch filters to quickly and effectively reduce room resonances and feedback issues. Three position level switch, -6dB (left), Bypass (middle) and -12dB (right). The potentiometers should be used to find and tune out any problem frequencies.
Front Panel
Output level bar graph indicators
The levels of each individual output are indicated with LED bar graphs.
Power On LED
Indicates whether the SAC2 is powered on.
Crossover frequency
The “X OVER” switch allows users to select a crossover frequency of either 70Hz or 120Hz. The correct frequency selection depends on the individual characteristics of the speakers used.
LPF / Direct switch
The crossovers Low Pass Filter can be bypassed by switching to the DIRECT position allowing a full range signal to pass through the low outputs. **Low output** Adjusts the LOW OUTPUT levels from -15dB to +10dB. **High Output** Adjusts the HIGH OUTPUT levels from -15dB to +10dB. **HPF / Direct switch** The crossovers High Pass Filter can be bypassed by switching to the DIRECT position allowing a full range signal to pass through the high outputs.
Rear Panel
Input
Balanced Female XLR connectors for connecting Left and Right audio signals.
Limiter time switch
The “LIM-T” switch adjusts the limiter time between either fast or slow, adjusting the attack and decay at the same time
Low Output
Balanced Male XLR connectors for sending Left and Right low-frequency audio signals.
Phase Switches
These switches reverse the polarity of the low-frequency output signal.
Sub Mode
This switch is used to switch the Low Output mode between Mono and Stereo. In Mono mode, both low outputs are summed together and both low outputs produce the same signal. Mono mode is active only if LPF / Direct switch is set to LPF.
Sub EQ
This switch turns on the low-frequency enhancement circuitry which boosts frequencies around 60Hz to enhance the lowest frequency band. This also works in full range mode (LPF off ) to provide a bass enhancement to a full range signal.
Hi Output
Balanced Male XLR connectors for sending Left and Right high-frequency audio signals.
Phase Switch
These switches reverse the polarity of the high-frequency band output signal.
Power Switch
Used to turn the SAC2 on or off.
Plug power connector
For connection to a standard IEC 3-pole AC connector. Before connecting make sure that the mains voltage corresponds to the SAC2`s voltage requirements as stated on the unit.

Using the System

Stereo Master EQ
One of the advantages of the SAC2 is the ability to use the Notch Filters and four-band EQ as both a Master and Monitor/Fill EQ. The Low Output can be used to send a full-range PA signal by switching it to DIRECT mode. The Hi-Output can be used to send a full-range signal by switching it to the DIRECT mode or as a High Pass Filter with selectable 70Hz or 120Hz frequency to send a signal to Monitor/Fill loudspeakers. The built-in VHD Line Drivers ensure the highest possible signal integrity over long distances. 2-Way Stereo Crossover
The primary function of the SAC2 is as a 2-way stereo crossover.
The Low Output is used as a stereo low pass signal for subwoofers. The Low Output should be switched to LPF and the Left and Right outputs sent to the subwoofers.
The Hi-Output is used as a stereo high pass signal for mid/hi loudspeakers.
The Hi-Output should be switched to HPF and the Left and Right outputs sent to the mid/hi loudspeakers.
The built-in VHD Line Drivers ensure the highest possible signal integrity over long distances.
2-Way stereo crossover with a mono subwoofer
The SAC2 can also be used as a stereo crossover with a mono subwoofer.
The Low Output is used as a mono low pass signal for a subwoofer. The Low Output should be switched to LPF and the Sub Mode switched to MONO.
Either Low Output can be sent to the Subwoofer as the Low Outputs now play the same signal.
The Hi Output is used as a stereo high pass signal for mid/hi loudspeakers.
The Hi-Output should be switched to HPF and the Left and Right outputs sent to the mid/hi loudspeakers.
The built-in VHD Line Drivers ensure the highest possible signal integrity over long distances. Left channel
The right channel is identical Input and Output Cables
SAC2 Output Cables

XLR output – XLR input Pin 2
– Pin 2 (Hot)
Pin 3 – Pin 3 (Cold)
Pin 1 – Pin 1 (Shield)| Jack output (balanced) – XLR input
Tip – Pin 2 (Hot)
Ring – Pin 3 (Cold)
Sleeve – Pin 1 (Shield)| Jack output (unbalanced) – XLR input
Tip – Pin 2 (Signal)
Sleeve – Pin 3 (Shield)
Sleeve – Pin 1 (Shield)
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SAC2 Output Cables

XLR output – XLR input
Pin 2 – Pin 2 (Hot)
Pin 3 – Pin 3 (Cold)
Pin 1 – Pin 1 (Shield)| XLR output – Jack input (balanced)
Pin 2 – Tip (Hot)
Pin 3 – Ring (Cold)
Pin 1 – Sleeve (Shield)| XLR output – Jack input (unbalanced)
Pin 2 – Tip (Signal)
Pin 3 – No Connection
Pin 1 – Sleeve (Shield)
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Specifications

System Acoustic Perfomance

-15 / +10dB Crossover / Bypass -10 / +10dB 0° / 180° 70 / 120Hz, Butterworth 12dB /octave 20 / 40Hz 4-band equalizer 2 per channel +6dB @ 60Hz Fast/Slow / -15 +

Warranty

Service
Warranty
Your SAC2 is covered against defects in material and workmanship. Refer to your supplier for more details.
Service
In the unlikely event that your SAC2 develops a problem, it must be returned to an authorized distributor, or service center or shipped directly to our factory. Because of the complexity of the design and the risk of electrical shock, all repairs must be attempted only by qualified technical personnel. If the unit needs to be shipped back to the factory, it must be sent in its original carton. If improperly packed, the unit may be damaged. To obtain service, contact your nearest KV2 Audio Service Centre, Distributor or Dealer.

The Future of Sound. Made Perfectly Clear.
KV2 Audio International Nádrazní 936, 399 01 Milevsko Czech Republic
Tel.: +420 383 809 320
Email: info@kv2audio.com
www.kv2audio.com
KVV120062-00-05-0