KV2 Audio SL3000 User manual
User Guide
SL Series
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.
· SL3000 · SL412 · SL2.15
Contents SL Series
Contents
1
CONTENTS 1
INTRODUCTION SL SERIES 2
SL3000 3
SL412 12
SL2.15 17
ACCESSORIES 21
CONFIGURATIONS 23
Overview 3
Drawings 4
Getting started 5
Features - Front panel 6
Features - Rear panel 7
Using the system - Full Range 8
Using the system - Subwoofers 9
Specifications 10
Block diagram 11
Overview 12
Drawings 13
Specifications 14
Technology 15
Frequency characteristics 16
Overview 17
Drawings 18
Specifications 19
Technology 20
SL Series
Introduction
Introduction
2
Thank you for purchasing this KV2 Audio, SL series system, consisting of the SL3000 stereo controller/ampli-
fier unit, two SL412 speakers and optional variants of subwoofers.
The SL412 and SL2.15 speakers incorporate an eye catching, slim, stylish cabinet design. Designed to inte-
grate either externally through simple wall mounting, suspension, ground stacking, or internally into walls
and surfaces. These units can be designed and supplied with custom colors, grill templates and logos, of-
fering a flexible and true designer integration product. Using KV2 Super Live Audio technology, the SL412
loudspeaker utilizes 4 x 12”low mid-range components and the proven and highly respected horn assembly
from the VHD1.0 with a single 8” mid-range and 3” large format NPVD compression driver. This mid-high
horn has an extremely coherent-wide horizontal dispersion of over 110 degrees whilst the purpose desig-
ned 4 x 12” configuration dramatically reduces the most common problem of immediate reflections within
the 300÷800Hz range usually associated with wide dispersion loudspeakers. The end result is a full and wide
sound propagation exactly where it is required. Whilst the SL412 can be utilized with any of KV2’s wide range
of subwoofer systems depending on the actual application, the accompanying SL2.15 utilizes the same slim
line design to allow for an aesthetically pleasing and acoustically punchy system that can virtually disappear
against a wall. The SL2.15 incorporates 2 x 15” speakers in a specially designed shallow cabinet to output
maximum bass response.
This manual contains important information on operating the SL system correctly and safely. Please take
some time and read this manual to familiarize yourself with the advanced features of this system.
The SL3000 Amplifier is a three-way, active control and amplification systems, specifically designed for the
KV2 Audio SL series loudspeaker systems. It houses all signal processing and amplification as well as provi-
ding control for external subwoofer cabinets configurations, and to operate additional subwoofer cabinets
if needed. External subwoofers are powered by the external subwoofer amplifier (VHD3200).
In most cases it would be advisable to use a KV2 Audio Line driver (LD4) in addition at the mixer end to en-
sure that the line to the amplifier is driven correctly and the signal integrity maintained.
Although this system is simple to operate, improper use can be dangerous. This is a very high-powered de-
vice that can put out high voltages and sizeable currents. Always use safe operating techniques with the SL
series system.
FOR YOUR SAFETY, READ THE IMPORTANT PRECAUTIONS SECTION AS WELL AS THE INPUT, OUTPUT
AND POWER CONNECTION SECTIONS OF THIS MANUAL.
Warranty
Your SL System is Warrantied against defects in material and workmanship. Please refer to your supplier for
more warranty details.
Service
WARNING! Electronic components, risk of SHOCK!
In the unlikely event that your product requires service, it must be returned to an authorized KV2 Audio
distributor, service centre or shipped directly to the factory. All warranty and service repairs must be under-
taken by qualified technical personnel. If the unit/s need to be shipped back to the factory, we advise using
the original packing to reduce the risk of damage in transit. Please contact your nearest KV2 Audio centre for
service details. Distributors list can be found at www.kv2audio.com.
Overview SL3000
Overview
3
SL3000 - 250V - part num. KVV 987 280
SL3000 - 230V - part num. KVV 987 279
SL3000 - 115V - part num. KVV 987 278
Introduction
The SL3000 Amplifier is a three-way, active control and amplification system specifically designed for the
KV2 Audio SL Series modular loudspeaker systems. It houses all signal processing and amplification as well
as providing control external subwoofer cabinet to run further subwoofer cabinets if needed. External sub-
woofer is powered by the external subwoofer amplifier. The SL3000 Stereo Amplifier drives and controls one
SL412 per channel and follows the typical KV2 holistic approach of matching components with high quality
electronics for true direct performance. All time alignment, phase correction and equalisation is provided
onboard.
Features
The amplifier compliment inside the SL3000 Amplifier is as follows:
•High Frequency - 100-watt, Class AB, push pull, low intermodulation design
•Mid Frequency - 200-watt, Class AB, push pull, low intermodulation design
•Bass - 1000-watt, high-efficiency, current-enhancing switch mode technology with Linear Active Filter
Unpacking
Unpack the SL3000 Amplifier and check to see if the-
re 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 damage incurred
during shipping. Be sure to save the carton and all
packing 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 repla-
cement.
The SL3000 Amplifier carton should contain:
•SL3000 Amplifier control unit
•User guide
•Two PowerCon detachable power cables
Amplifier rack mounting
The SL3000 Amplifier will mount in standard 19”rack
systems. Integral rear mounting rack ears are also
provided for additional support, do not rely on fixing
and mounting the amplifier using just the front
panel as support. Use eight screws and washers to
mount the amplifier to the equipment rack rails. We
recommend using a shock mounted rack for touring
use to prolong the life of your amplifier.
SL AMPLIFIER RACK MOUNTED
Applications
•Specifically designed as the amplification
and control elements for the SL loudspeaker
systems in a full rack mount module
•Fixed Installations
SL3000
Drawings
Drawings
4
410.5
455.3
431.8
481
.
4
101.7
465.8
37.7
139.3
177
101.7
401.7
37.7
139.3
8.8
7
10.3
R3.5
DETAIL A
DETAIL A
1:1
Getting started SL3000
Getting started
5
Cooling
The SL3000 Amplifier have a comprehensive cooling system featuring chassis sealed PCB board mounting
and shock mounted, speed controlled fans. This means that the cooling system never drives air across PCB
boards, connectors or components, ensuring prolonged electronic component lifespan and minimizing
maintenance cycles.
Air is drawn into the front of the amplifer by the two fans on the rear panel, this passes over the cooling fans
of the heat sinks and exhausts through the rear. If the heat sink gets too hot, its sensing circuit will open the
output relay, disconnecting the load.
It is important to have an adequate air supply at the front of the amplifier, and enough space around the rear
of the amplifier to allow the cooling air to escape. If the unit is rack mounted, do not use doors or covers on
the rear of the rack, the exhaust air must flow without restriction. If you are using racks with closed backs, use
fans on the rear rack panel to ensure an ample air supply.
NOTE: The filters at the top and bottom of the front panel must be kept clean and free of dust and dirt to
allow full operation-CHECK PERIODICALLY.
AC Requirements
Two PowerCon cables are provided to connect the SL3000 Amplier to a suitable AC power supplies. Each
cable powers each separate amplier channel for sucient current delivery.
CAUTION: The SL3000 requires a ground connection. Always use a grounded outlet and plug.
The PowerCon is a connector without breaking capacity, i.e. the PowerCon should not be connected or
disconnected under load or while it is live. Always isolate your AC supply before disconnecting the PowerCon
connector.
The SL3000 amplier operates in either 115V, 230V or 250V modes. Although pre-congured at the factory,
the unit’s operating voltage mode can be changed in the eld. Amplier power plug must remain readily
operable.
Your amplier will be supplied preset to the voltage used in your area. The table below provides typical
current draw gures for the SL3000 Amplier.
The receptacle must be connected to a fuse or circuit breaker. Connection to any other type of receptacle
poses a shock hazard and may violate local electrical codes.
Do not allow water or any foreign object to get inside the amlier. Do not put objects containing liquid on or
near tne unit.To reduce the risk of overheating the amplier, avoid exposing it to direct sunlight. Do not install
the unit near heat-emitting appliances, such as a room heater or stove. this amplier contains potentially
hazardous voltages. Do not attempt to disassemble the unit. The unit contains no user serviceable parts,
repairs should be performed only by factory trained service personnel.
Current draw of SL3000 Amplifier
SL3000
Features
Features
6
Front panel
1) AC Mains Switch
The SL3000 Amplifier has a combination AC Main switch/circuit breaker on the front panel. If the switch
shuts off during normal use, push it back to the ON position once. If it will not stay on you should take the
unit to qualified service personnel to have it serviced.
2) LIMITER
Yellow LED, indicates that the audio limiter has been activated. This RMS limiter protects speakers against
overload.
3) SIGNAL PRESENT
Green LED indicates when audio signal is present at the amplifier input.
3) POWER ON/ THERMAL (AUTO RESET)
Green LED indicates that the AC power is on. When red, it indicates that the thermal limit of the SL3000 Am-
plifier has been exceeded and the unit has shut down.
POWER ON /
THERMAL (AUTO RESET)
SIGNAL PRESENT
LIMITER
431 2
Features SL3000
Features
7
Rear panel
1) MAIN INPUT / THROUGHT OUT
This is the main system input balanced XLR connector with associated Through Signal Output connector for
sending unprocessed signal to other devices in a system.
2) SUB OUT
Balanced XLR output connector, used to connect additional subwoofer. Output is active even when FULL
RANGE switch is ON.
3) FULL RANGE
Switch, selects the amplifier crossover setup, when ON full range signal is reproduced by Classic cabinets,
when OFF signal is by frequency band in conjunction with the subwoofer output setup.
4) SUB LEVEL
This is the level control for the External Sub output in the range -6 to +6 dB.
5) MONO
Switch, sets SUB OUT outputs summing SUB OUT outputs channel A and B together.
6) PowerCon Power Connectors
The SL3000 Amplifier uses two connectors per two channel. Each connector supplies one channel. They
accept standard PowerCon terminated AC Mains cables.
7) Fans
The cooling fans operate continuously while the amplifier is on. An internal temperature sensor increases the
speed of the fans during high temperature conditions. Air enters through the front grille and exits through
the rear. Be sure to allow adequate air flow to the front of the rack in which the SL3000 Amplifier is mounted.
8) Speaker EP6 Connectors
Accepts a standard EP6 terminated loudspeaker cable for connecting up to a single SL412 cabinet. We re-
commend using 2.5mm/core cables.
SL3000
Using the system
Using the system
8
Full range setup
Set SL3000 Amplifier to FULL RANGE ON mode. SL412 cabinets plays full range signal.
Using the systen SL3000
Using the system
9
External subwoofer setup
Set SL3000 Amplifier to FULL RANGE OFF mode. Signal is crossed over at Hi/Mid for SL412 cabinets and SUB
for external subwoofer.
SUB SET UP LEVEL setting depends on which subwoofer unit is used.
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