GHM Delta OHM HD2050 User manual

Operating manual
Omnidirectional sound source
HD2050
Power amplifier/noise generator
HD2050.20
Facade directional loudspeaker
HD2050.30
www.deltaohm.com
English
Ke
ep for future
referen
ce.

HD2050 - 2 - V1.4
INDEX
1 INTRODUCTION .................................................................................................... 3
2 DESCRIPTION ....................................................................................................... 4
2.1 ELECTRICAL CONNECTIONS AND POWER ON .................................................................. 6
2.1.1 HD2050 DODECAHEDRON + HD2050.20 AMPLIFIER ................................................. 6
2.1.2 HD2050.30 FACADE LOUDSPEAKER + HD2050.20 POWER AMPLIFIER ............................ 7
2.1.3 HD2050 DODECAHEDRON + HD2050.40 SU WOOFER + HD2050.20 AMPLIFIER .............. 7
2.1.4 HD2050.30 FACADE LOUDSPEAKER + HD2050.40 SU WOOFER + HD2050.20 AMPLIFIER .. 9
2.2 NOISE GENERATOR ............................................................................................ 10
2.3 POWER AMPLIFIER AND DSP (DIGITAL SIGNAL PROCESSOR) ........................................... 11
2.4 HD2050.20R REMOTE CONTROL KIT ....................................................................... 13
2.5 HD2050.1 STAND ............................................................................................ 14
2.6 HD2050.40 SU WOOFER .................................................................................... 14
2.7 HD2050.30 FACADE LOUDSPEAKER ........................................................................ 15
3 CONNECTORS FOR REMOTE MANA EMENT ......................................................... 17
4 USIN PODWARE SOFTWARE ............................................................................. 18
4.1 CREATE A USER CONFIGURATION AND LOAD INTO THE DSP .............................................. 18
5 TECHNICAL SPECIFICATIONS ............................................................................. 21
6 HD2050 – DIRECTIVITY (ISO 140 – ISO 3382) .................................................. 23
6.1 HD2050.30: SOUND POWER LEVEL ........................................................................ 25
6.2 HD2050.30: DIRECTIVITY .................................................................................. 25
7 ORDERIN CODES .............................................................................................. 26

HD2050 - 3 - V1.4
1INTRODUCTION
The system is composed of dodecahedron loudspeaker HD2050, digital power amplifier
HD2050.20 and related accessories; it allows to perform building and architectural acoustics
measurements:
•Acoustic insulation
•uildings acoustics
•Acoustic absorption
•Reverberation time
•Room acoustics ( RASTI, STI, Clarity, Definition descriptors etc.)
•Risposta all’impulso
HD2050 is a sound source able to emit sound energy in the room in a isotropic way with very
high very high sound power levels. The HD2050 sound source is designed to offer maximum
performances with special attention to international standards in the field of architectural and
building acoustics.
The standards it complies with, are EN ISO 140-3:2006 and EN ISO 3382:2001 as concerns di-
rectivity; .
HD2050 features a wide extension frequency response and provides an emission sound power
level of more than 122d re 1pW. Twelve coaxial loudspeakers arranged on the dodecahedron
faces, provide a high acoustic performance. The twelve faces cabinet is multilayer wood made
and has a light weight allowing an optimal on site portability. The double components plastic
coating VFI-2513 gives the case a high hardness, so to conform ASTM (American Society for
Testing Materials) standards. A further opaque geal-coat finish makes the cabinet surface
scratch and waterproof resistant.

HD2050 - 4 - V1.4
2DESCRIPTION
The HD2050.20 is a digital signal amplifier, designed to work with HD2050 and HD2050.30
sources to obtain from these maximum acoustic performances.
The HD2050.20 amplifier incorporates a white / pink noise generator and an auxiliary input to
receive signals from other external devices.
Using Podware software (downloadable from Delta OHM website) you can modify the EQ curve
stored in the amplifier’s DSP in order to tailor the frequency response of the system to specific
measurement needs.
It’s also possible to connect the HD2050.30 façade loudspeaker or the HD2050.40 sub-woofer
(matched to the source HD2050) to HD2050.20 amplifier.
The system can be both AC and DC current supplied.

HD2050 - 5 - V1.4
For the connection of the HD2050.20 amplifier refer to connectors description shown in the
picture below.
HD2050.20 amplifier front panel
enerator section (above)
and amplifier section (below)
panel
Output conne
c
tor
(signal to loud-
speaker)
AC line input
Mains and Power
ON
Switch user DSP
Amplifier I
n
put
connector
Switch presets
Pink/
Whit
e no
i
se
selector
Manual signal
activation
Noise
generator
se
c
tion
Amplifier
section
Level control
0 = MIN
Antenna
connector

HD2050 - 6 - V1.4
2.1 ELECTRICAL CONNECTIONS AND POWER ON
elow typical connection configurations.
2.1.1 HD2050 DODECAHEDRON + HD2050.20 AMPLIFIER
efore making any connections make sure that the "LEVEL" potentiometer is set to minimum
by turning the knob all the way counterclockwise (position 0).
Set the PRESET switch on JA12 position for use with HD2050 dodecahedron (switch position on
JA4012 for use with HD2050.30 loudspeaker).
If user needs a custom equalization, set the switch "User DSP" to ON. To create, edit and load
in the DSP a custom equalization refer to the section on page 18.
Connect the L-shaped cable-adapter (HD2050.1.L) to HD2050 dodecahedron.
Connect the Neutrik SPEAKON signal cable to L-shaped cable-adapter (dodecahedron side) and
to the “OUTPUT” amplifier connector.
Connect the power cord to the mains socket and to the AC LINE INPUT of the amplifier.
The amplifier-side power cord connector (Neutrik POWERCON) also acts as power switch of the
equipment. Once the POWERCON connector is plugged in, rotate the connector about 45°
clockwise in order to turn on the amplifier.
ROTATE CLOCKWISE TO TURN ON AMPLIFIER

HD2050 - 7 - V1.4
2.1.2 HD2050.30 FACADE LOUDSPEAKER + HD2050.20 POWER AMPLIFIER
efore making any connections make sure that the "LEVEL" potentiometer is set to minimum
by turning the knob all the way counterclockwise (position 0).
Set the PRESET switch on JA4012 position for use with HD2050.30 loudspeaker.
If user needs a custom equalization, set the switch "User DSP" to ON. To create, edit and load
in the DSP a custom equalization refer to the section on page 18.
Connect the L-shaped cable-adapter (HD2050.1.L) to HD2050.30 loudspeaker.
Connect the Neutrik SPEAKON signal cable to L-shaped cable-adapter (loudspeaker side) and
to the “OUTPUT” amplifier connector.
Connect the power cord to the mains socket and to the AC LINE INPUT of the amplifier.
The amplifier-side power cord connector (Neutrik POWERCON) also acts as power switch of the
equipment. Once the POWERCON connector is plugged in, rotate the connector about 45°
clockwise in order to turn on the amplifier.
ROTATE CLOCKWISE TO TURN ON AMPLIFIER
2.1.3 HD2050 DODECAHEDRON + HD2050.40 SUBWOOFER + HD2050.20 AMPLIFIER
efore making any connections make sure that the "LEVEL" potentiometer is set to minimum
by turning the knob all the way counterclockwise (position 0).
Set the PRESET switch on JA12 position for use with HD2050 dodecahedron.
If user needs a custom equalization, set the switch "User DSP" to ON. To create, edit and load
in the DSP a custom equalization refer to the section on page 18.

HD2050 - 8 - V1.4
Connect the L-shaped cable-adapter (HD2050.1.L) to HD2050 dodecahedron.
Connect the short Neutrik SPEAKON signal cable (2 m cable HD2050.1.2) to L-shaped cable-
adapter (dodecahedron side) and to HD2050.40 subwoofer using one of the two inputs (no
matter which one).
Connect the Neutrik SPEAKON signal cable (5 m cable HD2050.1.5): one side to the second
subwoofer input, the other side to the “OUTPUT” amplifier connector.
Connect the power cord to the mains socket and to the AC LINE INPUT of the amplifier.
The amplifier-side power cord connector (Neutrik POWERCON) also acts as power switch of the
equipment. Once the POWERCON connector is plugged in, rotate the connector about 45°
clockwise in order to turn on the amplifier.
ROTATE CLOCKWISE TO TURN ON AMPLIFIER

HD2050 - 9 - V1.4
2.1.4 HD2050.30 FACADE LOUDSPEAKER + HD2050.40 SUBWOOFER + HD2050.20 AMPLIFIER
efore making any connections make sure that the "LEVEL" potentiometer is set to minimum
by turning the knob all the way counterclockwise (position 0).
Set the PRESET switch on JA4012 position for use with HD2050.30 loudspeaker.
If user needs a custom equalization, set the switch "User DSP" to ON. To create, edit and load
in the DSP a custom equalization refer to the section on page 18.
Connect the L-shaped cable-adapter (HD2050.1.L) to HD2050.30 loudspeaker.
Connect the short Neutrik SPEAKON signal cable (2 m cable HD2050.1.2) to L-shaped cable-
adapter (facade loudspeaker side) and to HD2050.40 subwoofer using one of the two inputs
(no matter which one).
Connect the Neutrik SPEAKON signal cable (5 m cable HD2050.1.5): one side to the second
subwoofer input, the other side to the “OUTPUT” amplifier connector.
Connect the power cord to the mains socket and to the AC LINE INPUT of the amplifier.
The amplifier-side power cord connector (Neutrik POWERCON) also acts as power switch of the
equipment. Once the POWERCON connector is plugged in, rotate the connector about 45°
clockwise in order to turn on the amplifier.
ROTATE CLOCKWISE TO TURN ON AMPLIFIER

HD2050 - 10 - V1.4
2.2 NOISE ENERATOR
Fig. 2.2.1 – Noise enerator section of HD2050.20 amplifier
The noise generator has two buttons: one is used to activate the noise generator (ACTIVE);
the other one is used to select the type of noise, between white noise and pink noise, sent to
amplifier
The green led “active” indicates that the generator’s status is ON.
y the external transmitter of the embedded remote control kit, the “mute” is activated, inter-
rupting immediately the generated noise. When the “mute” is activated, the cooling fan of the
amplifier’s power section, will be turned OFF for some seconds; in this way it’s avoided that
the noise generated by the fan could influence the acoustic measurement, if the background
noise level is considerably low
If the optional battery power kit (kit with inverter for battery power supply of apparatus when
mains power supply is not available) is used, it is possible to use the JA- T FAN CONTROL
connector to drive the power OFF of cooling fan installed in the battery power kit.
The noise generator emission level is manually adjusted using the “LEVEL” potentiometer. In
this way it’s possible to send the requested signal level to amplifier’s input. When the potenti-
ometer is rotated to the maximum clockwise (indication 10), the generator’s output level is
equal to the maximum allowed level of HD2050.20 amplifier’s input.