KV2 Audio VHD4.18 User manual

User Guide
VHD Series Subwoofers
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.
· VHD2.16 · VHD2.18J · VHD4.18 · VHD1.21 · VHD2.21

Important safety instructions
Before using your VHD Subwoofers, be sure to carefully read the applicable items of these operating
instructions and the safety suggestions.
1. Read all product instructions.
2. Keep printed instructions, do not throw away.
3. Respect and rewiew all warnings.
4. Follow all instructions.
5. Do not use this unit near water, in unprotected out door areas or in rain or wet conditions.
6. Clean only with dry cloth.
7. Install in accordance with KV2 Audio's recommended installation instructions.
8. Do not install near any heat sources such as heat radiators, heat registers, stoves or other apparatus
that produce heat.
9. Only use accessories specied by KV2 Audio.
10. Install the product only with rigging specied by KV2 Audio, or sold with the loudspeaker.
11. Unplug this loudspeaker during lightning storms or when unused for long periods of time.
12. Refer all servicing to qualied service personnel. Servicing is required when the loudspeaker has been
damaged in any way, liquid has been spilled or objects have fallen into the loudspeaker; rain or moisture
has entered the loudspeaker; the loudspeaker has been dropped; or when for undetermined reasons
the loudspeaker does not operate normally.
13. There are no user serviceable parts inside and removable may void the warranty.
14. An experienced user shall always supervise this professional audio equipment.
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
WARNING: To prevent re or electric shock, do not expose this equipment to rain or moisture.
SAFETY SUMMARY
To reduce the risk of electric shock, disconnect the loudspeaker from the AC mains before installing audio cable.
Reconnect the power cord only after making all signal connections. Connect the loudspeaker to a twopole, three- wire
grounding mains receptacle. 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 loudspeaker. Do not put objects containing liquid on or near the unit. To reduce the risk of overheating
the loudspeaker, avoid exposing it to direct sunlight. Do not install the unit near heat-emitting appliances, such as
a room heater or stove. This loudspeaker 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.
VHD Series Subwoofers · Important safety instructions
VHD Series Subwoofers · Important safety instructions

VHD Series Subwoofers · Contents
Contents
VHD2.16 4
Overview 4
Rear Panel 5
Drawings 6
Specications 7
Accessories 8
VHD2.18J 9
Overview 9
Rear Panel, Drawings 10
Specications 11
Congurations 12
Accessories 13
VHD4.18 14
Overview 14
Rear Panel 15
Drawings 16
Specications 17
Accessories 18
VHD1.21 19
Overview 19
Rear Panel 20
Drawings 21
Specications 22
Accessories 23
VHD2.21 24
Overview 24
Rear Panel 25
Drawings 26
Specications 27
Accessories 28
Warranty · Service 29
VHD Series Subwoofers · Contents

VHD2.16 · Overview
Application
Specically designed to accompany the VHD2.0 and
VHD1.0 as a true full range high output system for live
performance and music
• Hire and Production
• Concert venues
• Large Theatres
• Scalable into multiple large systems
• Fixed installation
VHD2.16 - part number KVV 987 142
VHD Subwoofer Enclosure
4
VHD2.16 · Overview
Introduction
The VHD2.16 double 15" subwoofer is a development of KV2 Audio’s ES 2.5 design that has become a standard for
compact, high output subwoofer devices. Acoustical design is based on extreme loading of asymmetrical chambers
delivering exceptional output and control. The cabinet is built to the same robust standards as the VHD4.18 and
delivers output in excess of 140dB when congured in a pair. It also functions as a very eective upper bass cabinet
when used alongside the ultra low frequency VHD1.21 or 2.21 subwoofers as part of a ve way active system. It is
ideal for use in live applications that require reproduction of low frequencies with very high transient content at high
output levels.
The VHD2.16 Bass Module consists of a purpose designed Very High Denition passive enclosure, containing two
custom designed 15"“ woofers and a design that has been applied based on extreme loading of asymmetrical
chambers to attain the optimum speaker loading , output, control and performance . The end result is a fast, dynamic,
Very High Denition sub woofer, truly capable of reproducing the articulation in a bass guitar, whilst also producing
denition of the Bass drum Kick.
Acoustic Components
The VHD2.16 woofer technology is based around high eciency, high power woofer designs. The device features two
15" woofers, with high temperature 4" (100mm) inside/outside epoxy baked polymide voice coil assembly's, that
undergoes multiple baking and curing processes as well as advanced magnetic structures with complex cooling
systems. The woofer cone has been specially developed to withstand the demanding and extreme loading
environment within the dual chambers.
Enclosure Design
The VHD2.16 is a compact, Twin Asymmetric chamber Bandpass design, in a lightweight Baltic Birch enclosure
featuring a large number of ergonomically designed parts that make it an easy speaker to set up and use. There are 4
side handles and one top and bottom that make it easy to pick up and reposition the unit in a natural - instinctive and
intuitive manner. The VHD2.16 Sub woofer Module employs low friction feet to enable easy locking into existing and
other KV2 Audio VHD cabinets and for easy movement.
Flytrack is tted within the enclosure to allow easy ying and suspension via the KV2 Audio propriety certied Flyware
system.

VHD2.16 · Rear Panel
VHD2.16 · Rear Panel
5
Signal output Signal input
Rear Panel

VHD2.16 · Drawings
Drawing
6
VHD2.16 · Drawings

VHD2.16 · Specications
Specications
System Acoustic Perfomance
Max SPL Long-term 143dB (4x VHD2.16)
Max SPL Peak 147dB (4x VHD2.16)
-3dB Response 37Hz to 130Hz
-10dB Response 32Hz to 130Hz
Impedance 8Ω
Crossover Point 100 to 130Hz
Low Frequency Section
Acoustic Design Twin Asymmetrical loading
Subwoofer Amplier Requirement 1600W /2x VDH2.16 (VHD3200 amp.)
Woofer Size / Voice Coil Diameter / Design 2x 15“ / 4“ / Inside Outside
Diaphragm Material Epoxy Reinforced Cellulose
Magnet Type Advanced ventilated neodymium
Speaker Input
Speaker Input AP4 male
Speaker Output
Speaker Output AP4 female
Cabinet
Cabinet Material Baltic birch
Handles 6
Color "Orange peeled" Matt Black or any RAL
Physical Dimensions
Height 600mm (23.62")
Width 700mm (27.55")
Depth 750mm (29.52")
Weight 65kg (143lbs)
Amplication and control requirements
Amplication and control VHD3200
VHD2.16 · Specications
7

VHD2.16 · Accessories
Cover for VHD2.16
part name: Cover VHD2.16
part number: KVV 987 155
- used with cart
Bass speaker cable LF15,
AP4 connectors - 1,5 m
part name: LF15
part number: KVV 987 121
- 1,5 m (5ft)
- for Bass Module daisy-chaining
Bass speaker cable LF40,
AP4 connectors - 4 m
part name: LF40
part number: KVV 987 122
- 4 m (13ft)
- for Bass Module hook-up
Bass speaker cable LF100,
AP4 connectors - 10 m
part name: LF100
part number: KVV 987 123
- 10 m (33ft)
- for Bass Module hook-up
Bass speaker cable LF200,
AP4 connectors - 20 m
part name: LF200
part number: KVV 987 124
- 20m (66ft)
- for Bass Module hook-up
Cart for VHD2.16, VHD4.18
part name: Cart for VHD2.16, VHD4.18
part number: KVV 987 100
- with hardwood bumpers
Fly Bar for VHD Systems
part name: Fly Bar for VHD Systems
part number: KVV 987 252
VHD Bass Extension Flybar
part name: VHD Bass Extension Flybar
part number: KVV 987 308
VHD Bass Fly Bar Arm
part name: VHD Bass Fly Bar Arm
part number: KVV 987 307
8
VHD2.16 · Accessories

VHD2.18J · Overview
Application
Especially designed to add extreme low frequency
extension with exceptional high output to the VHD, SL,
ES and ESR ranges, with or without other KV2 Audio
subwoofers
• Large scale live music and playback performance
• Nightclub and EDM Extreme Resolution
• Large Concert venues
• Hire and Production
• Fixed Installation
• Cinema
• Easily incorporated into projects with VHD, SL, ES
and ESR products
VHD2.18J - part number KVV 987 373
Introduction
The new VHD2.18J is a direct radiating bass-reex speaker containing two 18" high performance transducers. These 18’’
transducers are designed to withstand very high power levels. The optimised, high eciency, bass-reex design of the
VHD2.18J produces considerably more output than other similar double 18" enclosures. Constructed of Baltic Plywood,
integrated proprietary Flyware allows for fast rigging of multiple cabinets when they are needed to be own. An ideal
subwoofer for any application where direct radiating bass speaker reproduction is required.
Acoustic Components
The VHD2.18 woofer technology is based around a custom made high eciency, high power woofer design. The device
features two 18" woofers, with high temperature 4.5" (116mm) multiple layer aluminium voice coil assemblies, with
a double Silicone spider for optimised compliance. The advanced magnetic structure and ventilated voice coil gap
improves cooling dramatically, which in turn signicantly reduces power compression. The woofer cone has been
specially developed to withstand the demands of high power and very low frequency extension.
Enclosure Design
The VHD2.18J is an optimised, high eciency bass-reex design, with a revolutionary new design characteristic
(patent pending) developed by KV2 Audio Engineering. This brand new design gives considerably more output than
other similar double 18" enclosures, whilst maintaining the full low frequency bandwidth. The cabinet is a Baltic Birch
enclosure featuring a large number of ergonomically designed parts that make it an easy speaker to set up and use.
There are 6 side handles allowing you to reposition the unit in a natural and intuitive manner. The VHD 2.18J Sub
woofer Module also employs low friction feet to enable easy movement and locking into other VHD 2.18J cabinets.
A unique new Flying system is tted discretely within the enclosure to allow easy ying of single or multiple cabinets
using the KV2 Audio propriety certied Flyware system.
VHD2.18J · Overview
9

VHD2.18J · Rear Panel · Drawings
Rear Panel
10
VHD2.18J · Rear Panel · Drawings
Drawing
Front Input Switch
(Cardioid mode)

VHD2.18J · Specications
Specications
System Acoustic Perfomance
Max SPL Long-term 137dB
Max SPL Peak 140dB
-3dB Response 32Hz to 200Hz
-10dB Response 28Hz to 250Hz
Impedance 4Ω
Crossover Point 70Hz to 150Hz
Low Frequency Section
Acoustic Design High Eciency, Front Loaded, Bass Reex
Low Frequency Amplier Requirement 1600W / 1x VHD2.18J / VHD3200 amp
Number of Drivers 2
Woofer Size / Voice Coil Diameter / Design 18"/4.5"
Diaphragm Material Epoxy Reinforced Cellulose
Speaker Input
Speaker Input AP4
Cabinet
Cabinet Material Baltic birch
Handles 8
Color "Orange peeled" Matt Black or any RAL
Physical Dimensions
Height 570 mm (22.44”)
Width 1080 mm (42.52”)
Depth 800 mm (31.5”)
Weight 92 kg (202.83lbs)
VHD2.18J · Specications
11

VHD2.18J · Congurations
1,08 m
1x VHD2.18J
1x VHD2.18J
1,14 m
1,08 m
1x VHD2.18J
1x VHD2.18J
2,28 m
1x VHD2.18J
1x VHD2.18J
12
VHD2.18J · Congurations
Double stack Conguration
Cardioid Conguration

VHD2.18J · Accessories
Cover for 2x VHD2.18J
part name: Cover for 2x VHD2.18J
part number: KVV 987 388
- used with or without cart
Cart for VHD2.18J
part name: Cart for VHD2.18J
part number: KVV 987 378
- wheels (125mm) included
Fly Bar for VHD2.18J
part name: Fly Bar for VHD2.18J
part number: KVV 987 376
Wheel kit (125mm)
part name: Wheel kit (125mm)
part number: KVV 987 355
Package includes:
- 4x Wheel (2x with brake)
- 16x M8x16mm Screw Hexagon Head
- 16x M8 Washer Serrated
Bass speaker cable LF15,
AP4 connectors - 1,5 m
part name: LF15
part number: KVV 987 121
- 1,5 m (5ft)
- for Bass Module daisy-chaining
Bass speaker cable LF40,
AP4 connectors - 4 m
part name: LF40
part number: KVV 987 122
- 4 m (13ft)
- for Bass Module hook-up
Bass speaker cable LF100,
AP4 connectors - 10 m
part name: LF100
part number: KVV 987 123
- 10 m (33ft)
- for Bass Module hook-up
Bass speaker cable LF200,
AP4 connectors - 20 m
part name: LF200
part number: KVV 987 124
- 20m (66ft)
- for Bass Module hook-up
13
VHD2.18J · Accessories

VHD4.18 · Overview
Application
Specically designed to accompany the VHD2.0 and
VHD1.0 as a true full range high output system for live
performance and music
• Hire and Production
• Concert venues
• Large Theatres
• Scalable into multiple large systems
• Fixed installation
VHD4.18 - part number KVV 987 079
VHD Subwoofer Enclosure
Introduction
The VHD4.18 is a quad 18" subwoofer system, comprising of four individual loudspeaker cabinets. The objective is
to make the system easy to transport and setup. When assembled, the VHD4.18 system becomes a high eciency
neodymium subwoofer system with immense output. The system was designed with very high sensitivity in mind; it
provides 110 dB at 1W/1m and a tremendous output of 149dB when running at full power Each cabinet incorporates
a large port area that becomes an optimized horn aperture when all four cabinets are stacked together. The quad 18"
subwoofer system delivers extreme output and controlled low frequency resolution.
The VHD4.18 Bass Module consists of a purpose designed Very High Denition passive enclosure, containing one
custom designed 18“ woofer and a low Q design that has been applied to attain the optimum speaker loading and
performance . The end result is a fast, dynamic, Very High Denition sub woofer, truly capable of reproducing the
largest of dynamics and transients for all styles of music reproduction.
Acoustic Components
The VHD4.18 woofer technology is based around very high eciency, high power woofer designs. The device features
a single 18" cone with a high temperature 4" (100mm) inside/outside epoxy baked polymide voice coil assembly, that
undergoes multiple baking and curing processes as well as advanced neodymium magnetic structures with complex
cooling systems. The woofer cone has been specially developed to withstand the demanding environment within the
hybrid low load chamber.
Enclosure Design
The VHD4.18 is a compact, hybrid low load ported horn design, in a lightweight Baltic Birch enclosure featuring a large
number of ergonomically designed parts that make it an easy speaker to set up and use. There are 4 side handles and
one top and bottom that make it easy to pick up and reposition the unit in a natural - instinctive and intuitive manner.
The VHD2.16 Sub woofer Module employs low friction feet to enable easy locking into existing and other KV2 Audio
VHD cabinets and for easy movement.
Flytrack is tted within the enclosure to allow easy ying and suspension via the KV2 Audio propriety certied Flyware
system.
14
VHD4.18 · Overview

VHD4.18 · Rear Panel
Signal output Signal input
Rear Panel
VHD4.18 · Rear Panel
15

VHD4.18 · Drawings
Drawing
16
VHD4.18 · Drawings

VHD4.18 · Specications
Specications
System Acoustic Perfomance
Max SPL Long-term 146dB (4x VHD4.18)
Max SPL Peak 149dB (4x VHD4.18)
-3dB Response 36Hz to 100Hz
-10dB Response 31Hz to 100Hz
Impedance 8Ω
Crossover Point 100Hz
Low Frequency Section
Acoustic Design Horn reex loaded
Subwoofer Amplier Requirement 800W /1x VHD4.18 (VHD3200 amp.)
Woofer Size / Voice Coil Diameter / Design 18" / 4" / Inside Outside
Magnet Type Neodymium
Diaphragm Material Epoxy Reinforced Cellulose
Speaker Input
Speaker Input AP4 male
Speaker Output
Speaker Output AP4 female
Cabinet
Cabinet Material Baltic birch
Handles 6
Color "Orange peeled" Matt Black or any RAL
Physical Dimensions
Height 600mm (23.62")
Width 700mm (27.55")
Depth 750mm (29.52")
Weight 52 kg (114.4lbs)
Amplication and control requirements
Amplication and control VHD3200
VHD4.18 · Specications
17

VHD4.18 · Accessories
Cover for VHD4.18
part name: Cover VHD4.18
part number: KVV 987 105
- used with cart
Bass speaker cable LF15,
AP4 connectors - 1,5 m
part name: LF15
part number: KVV 987 121
- 1,5 m (5ft)
- for Bass Module daisy-chaining
Bass speaker cable LF40,
AP4 connectors - 4 m
part name: LF40
part number: KVV 987 122
- 4 m (13ft)
- for Bass Module hook-up
Bass speaker cable LF100,
AP4 connectors - 10 m
part name: LF100
part number: KVV 987 123
- 10 m (33ft)
- for Bass Module hook-up
Bass speaker cable LF200,
AP4 connectors - 20 m
part name: LF200
part number: KVV 987 124
- 20m (66ft)
- for Bass Module hook-up
Cart for VHD4.18, VHD2.16
part name: Cart for VHD4.18, VHD2.16
part number: KVV 987 100
- with hardwood bumpers
18
VHD4.18 · Accessories

VHD1.21 · Overview
Introduction
Single 21", Low Q band-pass sub woofer system that adds extension and weight for applications where you want
to feel, as well as hear, very high denition audio working down to 23Hz. It is ideal for use in live applications that
require reproduction of low frequencies with very high transient content at high output levels. With an eciency for
two boxes of 102dB, it shares the same footprint as the other VHD sub woofers in a compact lightweight easily
transported package. Alongside the VHD2.16, it forms part of a remarkable ve way active system.
The VHD1.21 Bass Module consists of a purpose designed Very High Denition passive enclosure, containing one
custom designed 21“ woofer and a low Q design that has been applied to attain the optimum speaker loading and
performance . The end result is a fast, dynamic, Very High Denition sub woofer, truly capable of reproducing the
articulation in a bass guitar, whilst also extending down to very low frequencies.
Acoustic Components
The VHD1.21's woofer technology is based around high eciency, high power woofer designs. The device features a
single 21" woofer, with a high temperature 4" (100mm) inside/outside epoxy baked polymide voice coil assembly, that
undergoes multiple baking and curing processes as well as advanced magnetic structures with complex cooling
systems and a Carbon Fibre reinforced cone assembly. The woofer cone has been specially developed to withstand the
demanding environment within the large single chamber.
Enclosure Design
The VHD1.21 is a compact, large chamber bass reex low Q Bandpass design, in a lightweight Baltic Birch enclosure
featuring a large number of ergonomically designed parts that make it an easy speaker to set up and use. There are 4
side handles and one top and bottom that make it easy to pick up and reposition the unit in a natural - instinctive and
intuitive manner. The VHD1.21 Sub woofer Module employs low friction feet to enable easy locking into existing and
other KV2 Audio VHD cabinets and for easy movement.
Application
Specically designed to add extreme low frequency
extension to the VHD2.0 and VHD1.0 in conjunction with
other VHD subwoofers
• Live performance
• Fixed installation
• Cinema
• Theatre
VHD1.21 - part number KVV 987 080
Ultra Low Frequency Enclosure
VHD1.21 · Overview
19

VHD1.21 · Rear Panel
Signal output Signal input
Rear Panel
20
VHD1.21 · Rear Panel