Product Guide - Herman Pro AV
Product
Selection Guide
Studio Products
Version: 04
Date: 20-Jan-2009
Language: English
Klein + Hummel
Introduction
The choice of a loudspeaker or subwoofer from the Klein + Hummel Studio Systems range depends on a number of factors:
•
•
•
•
•
System configuration
Listening distance / room volume
Required low frequency cut-off / replay level
Available space
Budget
Furthermore, the system should be balanced, i.e. one component in the system is not weaker than the rest of the system. For example, a system with under-specified
subwoofer(s) will have limited low-frequency headroom. Or a system with small rear loudspeakers will struggle with high level sound panned to the rear channels.
It is possible to deliberately under-specify the entire system whilst keeping it balanced: the cost of this is limited maximum SPL and/or LF cut-off, but the system will be
smaller and cheaper. Alternatively, one can deliberately over-specify the entire system whilst keeping it balanced: the advantage is that the system’s distortion will be
lower for a given replay level, however the cost is higher and more space is required.
One exception to this is over-specified subwoofer(s), which will have reduced low-frequency distortion resulting in a cleaner sounding bass.
Bass Management
Bass management redirects the LF energy of the main channels and some, or all, of the LFE channel energy to the subwoofer(s) in the reproduction system. The advantages
of bass management are:
•
•
•
•
•
•
Subwoofer extends the LF cut-off of the system downwards
Higher maximum system SPL
Lower distortion
Same phase, level, and frequency response of low frequency energy of the main and LFE channels
Same coupling of the low frequency energy to the room on all main channels
More flexibility in coupling the low frequency energy to the room as the subwoofer can be moved
A block diagram of the Klein + Hummel 7.1 Channel High Definition Bass Manager™, as fitted to the O 810 and O 870 subwoofers, is shown on the next page. Note that the
O 800 has a 3-Channel bass manager, no volume control, and a reduced acoustical control set.
Product Selection Guide
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Klein + Hummel
7.1 High Definition Bass Manager™
Product Selection Guide
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Klein + Hummel
Listening Distance
To choose the appropriate front loudspeakers for your system, first use the listening distance to the front loudspeakers to find a model in the table below that fits within
the recommended listening distance range column. Do not select a model where the listening distance is less than the minimum or greater than the maximum values
shown. In all cases, the front loudspeakers (including the center) should be the same as each other.
Product
O 500 C
O 410
O 300 (D)
O 110 (D)
M 52 (D)
Most Common Application
Far-field monitoring
Mid-field monitoring
Near-field monitoring
Near-field monitoring
Near-field monitoring
Minimum
1.5 m (5’)
1.25 m (4’)
0.75 m (2.5’)
0.75 m (2.5’)
0.6 m (2’)
Listening Distances
Recommended
2.0 - 3.0 m (6’ - 9’)
1.5 - 3.0 m (5’ - 9’)
1.0 - 2.5 m (3’ - 8’)
1.0 - 2.0 m (3’ - 6’)
1.0 - 2.0 m (3’ - 6’)
Maximum
15 m (45’)
11 m (33’)
6 m (18’)
4 m (12’)
3 m (9’)
In a studio application, the loudspeakers should be placed according to the ITU-R BS.775-1 recommendations so there is consistency of reproduction when compared to
other listening environments. For movie applications, ANSI/SMPTE 202M is the preferred standard for system setup. For home use, as materials are mixed in ITU style
rooms, one should get as close as possible to this configuration to maximize replay authenticity.
Loudspeaker Name
Left
Center
Right
Left Surround
Right Surround
ITU-R BS.775-1
Angle
-30°
0°
30°
-110°±10°
110°±10°
ANSI/SMPTE 202M
Angle
-22.5°
0°
22.5°
An array to the left
An array to the right
For two-channel stereo, ±30° should be used. There are currently no internationally agreed standards for 6.1 or 7.1 formats. However common practice is to use one or two
loudspeakers in the centre back location of a 6.1 system. In a 7.1 system common practice is to place side loudspeakers at ±90° and to push the surround loudspeakers
back to ±150°.
The loudspeaker should be placed on a circle to ensure equal time of arrival of the audio from all loudspeakers. Failing this, appropriate electronic time delays should be
added between the subwoofer and each loudspeaker to compensate for time of flight differences.
Product Selection Guide
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Klein + Hummel
Balancing the System
Next, the other loudspeakers in the system (if required) should be chosen to match the main loudspeakers chosen.
Rear loudspeakers are typically the same model as the front loudspeakers, although it is possible to reduce the specification if space or budget is limited.
The subwoofer(s) should have sufficient output to keep up with the main loudspeakers, but can be over-specified for improved low-frequency system performance. Overspecifying the subwoofer section of system leads to lower LF distortion (cleaner audio), as each subwoofer does not have to work as hard.
Multiple smaller subwoofers (2 - 4 depending on the width of the room) distributed along the front wall create a plane wave that propagates from the front to the back of
the room. This has the effect of reducing the interaction of the plane wave with the side wall. The consequence is less excitation of the side-to-side room modes and a
better time-domain response. From a sound quality point of view, the low frequency reproduction will be tighter and cleaner. This is called a Plane Wave Bass Array™
(PWBA™).
The table on the next page ensures a well balanced system.
Table Notes:
• The “Recommended” column specifies the minimum recommended subwoofer solution to balance the entire system. Selecting a smaller subwoofer will limit the
maximum output of the system.
• The “High Performance” column gives +6 dB of headroom over the recommended minimum subwoofer solution. The lower required replay level from the subwoofer(s)
results in a substantially reduced low-frequency distortion. This specification is recommended for reproducing bass-heavy material in large and well-damped rooms.
• The “Plane Wave Bass Array™” column specifies two to four subwoofers (three to four for larger systems) that should be positioned along the front wall to generate a
plane wave down the room. This reduces the side wall interaction thereby improving the side-to-side bass reproduction. The number of subwoofers arranged in a bass
array depends on the width of the room: wider rooms, more subwoofers.
• If the system will eventually be upgraded for a larger channel count, select the loudspeakers and subwoofer(s) from the subwoofer(s) from that section.
• The same subwoofer specification is appropriate for 5.1 to 7.1 multichannel systems, even if the main channels are run full range, i.e. not bass managed.
• If space is insufficient for large cabinets, two O 810 subwoofers may be substituted in place of one O 870.
• An O 800 can be used in place of an O 810. It has the same maximum output level, the bass extends to 27 Hz, and there is a 3 channel bass manager. This is reflected in
the lower retail price.
• Products written with “(D)” after the number signifies that the digital input version (e.g. O 300 D) or non-digital input version (e.g. O 300) can be used. Be careful to
ensure that desired interconnectivity (source-to-subwoofer AND subwoofer-to-main loudspeakers) of the system is possible.
• The O 500 C has a 20 Hz mode, but the extra bass extension comes at the expense of maximum SPL.
Product Selection Guide
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Klein + Hummel
Fronts
2- Channel Stereo
(2.0)
Matrix Multichannel
Dolby Surround
(3/1.0)
Discrete Multichannel
5.1 (3/2.1)
6.1 (3/3.1)
7.1 (3/4.1)
Larger systems
Product Selection Guide
Rears
Subwoofer(s)
- 3 dB LF Cut-off (Max SPL at 3% THD)
Recommended
Smaller
Recommended
High
Performance
Plane Wave
Bass Array™
Without Sub
With Sub
O500C
-
-
2 x O900
4 x O900
27 Hz (123.4 dB)
O410
-
-
O870
2 x O870
O300(D)
-
-
O110(D)
-
-
M52(D)
-
-
17 Hz (123.4 dB)
18 Hz (120.0 dB)
27 Hz (120.0 dB)
18 Hz (112.8 dB)
27 Hz (112.8 dB)
18 Hz (107.7 dB)
27 Hz (107.7 dB)
18 Hz (103.0 dB)
27 Hz (103.0 dB)
O500C
O500 C
27 Hz (123.4 dB)
O410
O410
O410,
O300(D),
O110(D)
O300(D),
O110(D)
O110(D),
M 52(D)
O300(D)
O300(D)
O110(D)
O110(D)
M52(D)
M52(D)
M52(D)
-
O500 C
O500 C
O410,
O300(D),
O110(D)
O300(D),
O110(D)
O110(D),
M52(D)
O810
O800
O810
O800
O810
O800
O810,
O800
O810,
O800
3-4 x O900
3-4 x O810
3-4 x O800
2-4 x O810
2-4 x O800
2-4 x O810
2-4 x O800
2-4 x O810
2-4 x O800
2 x O900
4 x O900
3-4 x O900
O870
2 x O870
O870
O810
O800
O810
O800
O810
O800
O810
O800
O810
O800
3-4 x O810
3-4 x O800
2-4 x O810
2-4 x O800
2-4 x O810
2-4 x O800
2-4 x O810
2-4 x O800
3 x O900
6 x O900
3-4 x O900
O870
30 Hz (120.0 dB)
35 Hz (112.8 dB)
56 Hz (107.7 dB)
90 Hz (103.0 dB)
30 Hz (120.0 dB)
35 Hz (112.8 dB)
56 Hz (107.7 dB)
90 Hz (103.0 dB)
27 Hz (123.4 dB)
17 Hz (123.4 dB)
18 Hz (120.0 dB)
27 Hz (120.0 dB)
18 Hz (112.8 dB)
27 Hz (112.8 dB)
18 Hz (107.7 dB)
27 Hz (107.7 dB)
18 Hz (103.0 dB)
27 Hz (103.0 dB)
17 Hz (123.4 dB)
3-4 x O810
18 Hz (120.0 dB)
30 Hz (120.0 dB)
3-4 x O800
27 Hz (120.0 dB)
2-4 x O810
18 Hz (112.8 dB)
O300(D)
O300(D)
O870
2 x O870
35 Hz (112.8 dB)
2-4 x O800
27 Hz (112.8 dB)
O810
2-4 x O810
18 Hz (107.7 dB)
O110(D)
O110(D)
M 52(D)
O870
56 Hz (107.7 dB)
O800
2-4 x O800
27 Hz (107.7 dB)
O810,
O810
2-4 x O810
18 Hz (103.0 dB)
M52(D)
M52(D)
90 Hz (103.0 dB)
O800
O800
2-4 x O800
27 Hz (103.0 dB)
Please contact your local distributor or Klein + Hummel for guidance as we have much experience with custom designed solutions
for special applications.
O410
O410
2 x O870
3 x O870
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Klein + Hummel
Checking the System Solution
Finally, using the table, check that the chosen system fulfills the requirements for LF cut-off and maximum SPL. If the chosen system does not satisfy the specification, a
larger system will be required.
Also check interconnectivity:
• If you have analog outputs, choose “not D” versions of the products (e.g. M 52, O 110, and O 300). If you have digital outputs, choose “D” versions of the products (e.g.
M 52 D, O 110 D, and O 300 D).
• The O 410 is fitted with an analog input as standard, but also has a digital input option.
• The O 500 C has analog and digital inputs fitted as standard.
• The O 810 and O 870 subwoofers have an optional digital input card that replaces the standard analog input card. The outputs of the bass manager are always analog,
so “D” main loudspeakers are not necessarily required.
• The O 800 has analog inputs and outputs only.
• The O 900 can use the analog subwoofer output of the O 500 C and an external amplifier (Powersoft K6 or K8 recommended).
Systems for Movie Mixing
The above table assumes that all the channels in the system are bass managed – typical in the broadcast and music industries. In the movie industry, the main channels are
produced entirely by the main loudspeakers, and only the LFE channel is reproduced by the subwoofer(s). In addition, each rear channel is often reproduced using multiple
loudspeakers over, typically, half the listening distance. Each channel should reproduce long-term pink noise at a level of 85 dB(C) at the listening position. Use the table
below for this type of system:
Number of surround loudspeakers and type per channel
Front
Loudspeakers
O500C
O410
O300(D)
O110(D)
M52(D)
Product Selection Guide
Subwoofer(s)
for LFE only
2 x O900
O870
O810
O810
O810
1
O410
O410
O110(D)
M52(D)
M52(D)
2
O410
O300(D)
O110(D)
M52(D)
M52(D)
3
O300(D)
O110(D)
M52(D)
M52(D)
M52(D)
4
O110(D)
O110(D)
M52(D)
M52(D)
M52(D)
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Klein + Hummel
Mounting Hardware Selection Matrix
Our mounting hardware range philosophy is to supply the parts required to mount our loudspeakers onto commonly available third-party mounting products. For each
product is listed in the table below the hardware that may be used to mount the loudspeaker in the specified way. Note that the hardware combinations are listed in the
order in which they are attached to the product: starting with the cabinet and ending with the stand or surface to which it will be mounted.
Location of
Loudspeaker
O 500 C
O 410
Flush Mounted
WMK O 500 C for
electronics
LH35+LH28
LH35+LH29
LH35+LH48+K&M26790
LH35+LH48+K&M26795
LH36+LH28
LH36+LH29
LH36+LH48+K&M26790
LH36+LH48+K&M26795
REK 1 and CP nn for
electronics
LH41+LH28
LH41+LH36+LH28
LH41+LH29
LH41+LH36+LH29
LH41+K&M26790
LH41+K&M26795
On a Floor Stand
(tripod, TV spigot, or
with a 5/8" thread)
On a Stand
(table or mic with a
5/8" thread)
On a Subwoofer
(fitted with a flange)
-
O 300 (D)
O 110 (D), P110
LH25+LH28
LH25+LH29
LH41+LH28
LH41+LH29
LH25+LH48+K&M26790
LH25+LH48+K&M26795
LH41+K&M26790
LH41+K&M26795
-
-
(O 900)
LH35+LH37
LH35+LH28+pole
LH36+LH37
LH36+LH28+pole
LH35+LH47+LH45
LH36+LH47+LH45
(O 870)
LH41+LH37
LH41+LH36+LH37
LH41+LH28+pole
LH41+LH36+LH28+pole
LH42+LH45
(O 870)
LH25+LH37
LH41+LH37
LH25+LH28+pole
LH41+LH28+pole
No hardware required
LH25
LH25+LH47+LH45
Included rear panel
brackets
Off a Ceiling
LH35
LH35+LH47+LH43
LH35+LH47+LH46
LH36+LH47+LH43
LH36+LH47+LH46
LH42+LH29
LH42+LH43
LH42+LH45
LH42+LH46
LH25
LH25+LH47+LH43
LH25+LH47+LH46
Off a Lighting or
Truss Bar
Safety Connection
LH35+LH29
LH36+LH29
LH42+LH29
LH25+LH29
On a Meter Bridge
In 19" Racking
On a Wall
Product Selection Guide
-
-
C15
LH31+LH28
LH31+LH28+LH33
LH31+LH29
LH31+LH48+K&M26790
LH31+LH48+K&M26795
LH31+LH7
LH31+LH8
M 52 (D)
M6 threaded inserts in
side of cabinet
LH11
LH11
3/8" thread in base of
cabinet
-
No hardware required
LH32
KG30
LH31+LH27
LH38+LH27
LH38+LH47+LH45
LH31
LH31+LH27
LH38
LH38+LH27
LH31+LH47+LH43
LH31+LH47+LH46
LH38+LH47+LH43
LH38+LH47+LH45
LH38+LH47+LH46
LH38+LH29
LH31+LH29
C15
-
LH11
MA19
LH11
LH11
-
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Klein + Hummel
Product Selection Guide
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Klein + Hummel
KG 30 (W)
LH 7/ LH 8
LH 29
LH 31 (W)
LH 37
LH 38 (W)
LH 47
LH 48
LH 11
LH 25 (W)
LH 32 (W)
LH 41
C 15
LH 33
LH 42
MA 19
LH 27 (W)
LH 28 (W)
LH 35
LH 36
LH 43
REK 1
LH 45
LH 46
REK 2
Note: Mounting hardware codes with a (W) are also available in white.
The description “pole” in the table means a customer supplied pole (outside diameter = 35mm, 1.4”) to lift the main loudspeaker above the subwoofer. For stability
reasons, the recommended maximum distance between the subwoofer and the loudspeaker 65 cm (2’).
Product Selection Guide
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Klein + Hummel
Recommended König & Meyer (www.k-m.de) Stands and Accessories
Loudspeaker Stands
21435 (max 35 kg)
26720 (max 35 kg)
26795
21436 (max 35 kg)
26740 (max 35 kg)
21450 (max 50 kg)
26750 (max 35 kg)
21485 (max 35 kg)
21300 (max 50 kg)
Microphone Stands
19900
20000
20120
20130
Table Stands
22110
23200
24110 (max 50 kg)
24150 (max 50 kg)
Wall mounts
24100 (max 50 kg)
29305 (max 50 kg)
Safety Wires
68120
24102 (max 50 kg)
21455 (max 40 kg)
21302 (max 30 kg)
21460 (max 50 kg)
26790
24471 (max 15 kg)
24481 (max 25 kg)
68160
Truss Clamp
68610
Product Selection Guide
Page 10
The following are trademarks of K+H Vertriebs- und Entwicklungsgesellschaft mbH.
• “Plane Wave Bass Array” and “PWBA”
• “7.1 Channel High Definition Bass Manager” and “7.1 HD Bass Manager”
• “7.1 Channel High Definition Bass Management” and “7.1 HD Bass Management”
Other company, product, or service names may be trademarks or service marks of other organizations.
Klein + Hummel reserve the right to change product specifications without notice. Exceptions and omissions excluded.
K+H Vertriebs- und Entwicklungsgesellschaft mbH
Auf dem Kessellande 4a, 30900 Wedemark, Germany.
Phone: +49 (5130) 58 48 0
Fax: +49 (5130) 58 48 11
E-mail: enquiries@klein-hummel.com
Web site: www.klein-hummel.com
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