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HD 2040 – Tapping Machine, HD 2050 – Omnidirectional Sound Source, HD 2050.20 – Power Amplifier, HD 2050.30 – Directional Loudspeaker for Façade Sound Insulation, HD 2050.40 – Passive Subwoofer

HD2040 TAPPING MACHINE, HD2050 OMNIDIRECTIONAL
SOUND SOURCE, HD2050.20 POWER AMPLIFIER, HD2050.30
DIRECTIONAL LOUDSPEAKER FOR FAÇADE SOUND INSULATION,
HD2050.40 PASSIVE SUBWOOFER

For more info see the description or download the PDF attached.

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Product Description

HD2040: Tapping Machine
The tapping machine HD2040 is a normalized impact noise generator for the
measurement of sound insulation of fl oors according to ISO 140-6, ISO 140-7, ISO
140-8, ASTM E492 and E1007. It has 5 hammers in line driven by a motor controlled
by an electronic system, by means of camshaft. The rate of fall of the hammer and
the frequency of the impacts are constantly monitored to ensure compliance with
the legislation. LED indicators on the front panel indicate the proper functioning
and impact speed of each hammer, detected by an optical sensor. The hammers
are made of stainless steel, hardened and dimensionally stable over time. The unit is
equipped with support feet with height-adjustable rubber base. On the back cover is
available a housing for a detachable spacer which can be used to assist the user to
set exact 40mm vertical falling height from the fl oor. The spacer can be positioned
in the housing with a light pressure; pull to remove it. A spirit level on the top cover
allows to set the machine in a perfectly horizontal position. The feet will be turned
below the base to reduce the size of the packing and easy transport of the machine.
The starting and stopping of the machine is via a front panel button or remotely
using the supplied remote control. The antenna is screwed to the connector on the
top of the unit and it has to be unscrewed it to store the unit in its case. Mains
power supply 100 … 240 VAC or rechargeable lithium-ion battery housed inside the
unit. The charger is built in; the battery recharges automatically when the machine
is connected to the mains supply. The aluminium frame reduces the weight of the
machine and makes it easily transportable. The inside of the lid of the machine is
treated with sound absorbing material.

HD2040: Machine for the generation of impact noise in accordance with ISO 140-6,
ISO 140-7, ISO 140-8, ASTM E492 and E1007. Complete with rechargeable
lithium ion battery,built-in battery charger, remote control, 13 mm wrench,
instruction manual. Optional carrying case.
Accessories
HD2040-R: Additional remote control. Frequency 869.525 MHz Power 6 mW.
HD2040-A: Additional antenna for the remote control.
HD2040-V: Carrying case.
HD2040-B: Spare rechargeable lithium-ion battery pack. Nominal voltage 7.2 V.
Rated capacity 2900 mAh.

HD2050 – Dodecahedron Loudspeaker
To test buildings acoustic insulation, it’s necessary to use sound sources that
meet the demands of specific technical ISO standards.
Delta Ohm has developed a system for the measurement of passive acoustic
performances of buildings that integrates the most advanced features required
for this type of equipment.
The need for high noise excitation levels, necessary to deal with increasing insulation
values of modern buildings, has been made co-exist with portability and
versatility among the best on the market today.
HD2050 is a sound source composed of 12 speakers arranged in a dodecahedral
chassis, capable of radiating high power sound energy in all directions with a
directionality in accordance with ISO3382.
The sound source can be integrated with the digital amplification system HD2050.20,
which offers high power as well as providing an equalizer that adapts the system’s
response to any more specific measurement needs.
Features:
• According to ISO 140-3, ISO 3382, UNI 11367 (D.p.c.m. 5/12/97).
• Customizable user setup with user defined equalization when used with
HD2050.20 power amplifier.
• High Power Level
With more than 120 dB (LIN) re 1pW sound power level, the HD2050 can also be used
for sound insulation measures where the signal/noise ratio in the receiving room
becomes critical. The linear frequency range from 80 Hz to 10 kHz (1/3 oct)
can easily cover the requirements of technical standards for the measurement
of acoustic insulation of buildings. In addition the spectrum extension over
canonical range 100 Hz ÷ 3150 Hz makes the system HD2050 a perfect tool also
for room acoustics measurements. The optional subwoofer HD2050.40 further
improves power and response extension at lower frequency to cover specific
applications in large volume rooms.
• Versatility of use with digital amplification
Power amplifier HD2050.20 incorporates a parametric equalizer that allows to
change the emission spectrum of HD2050. With this tool, specific measurement
needs can be easily satisfied, such as the need to concentrate more sound power in
specific areas of the acoustic frequency spectrum. The software supplied with the
power amplifier, allows to customize the frequency response and then store it, in
order to be loaded and activated in the dodecahedron-amplifier system when
needed.
• Lightness and portability
With a weight of only 9 kg and an outer diameter of 38.5 cm, the HD2050
is one of the lightest dodecahedron speakers on the market. HD2050.20 digital
amplifier provides an output of more than 1000 W @ 12 ohm, and comes
with an extremely rugged and lightweight flight case. The HD2050 system is
designed for in situ portability: the dodecahedron has a robust and ergonomic T
shaped carrying handle.
Accessories
The system can be supplied with all the accessories useful for transport and correct
in situ positioning: extendable tripod with steering wheels HD2050.1 (minimum
height 1300 mm, maximum height 2050 mm), wireless remote control, flight case
for loudspeaker HD2050-V. For best performances, HD2050 should be driven with
HD2050.20 power amplifier (including wireless remote control HD2050.20R) and
HD2050.40 subwoofer to extend the frequency response down to 20Hz.
Applications:
• Sound insulation
• Sound absorption
• Reverberation time measurements
• Architectural acoustics
• Impulse response of rooms

Directivity:
HD2050 meets the requirements of ISO 140-3 and ISO 3382. The diagrams of
directional response measured in the horizontal plane in octave bands, show the
ideally isotropic behaviour of HD2050. Below 1000 Hz the speaker has no significant
directionality.

HD2050: Dodecahedral loudspeaker according to ISO 140-3 and ISO 3382 standards.
Including signal cable HD2050.1.5, cable HD2050.1.L. User manual. Carrying
case.
Accessories
HD2050.1: Stand for dodecahedron HD2050, with steering wheels, extensible
and retractile. Minimum height 1300mm, maximum height 2050mm. Damping
of the extensible rod.
HD2050.1.5: Signal cable, length 5 m.
HD2050.1.L: Signal cable adapter.
HD2050V: Carrying case for HD2050 dodecahedron.
HD2050.20: Digital power amplifi er with integrated parametric equaliser. Includes
fl ight case, Podware software, power supply cable HD2050.2, integrated
wireless remote control HD2050.20R, user manual.
HD2050.20R: Wireless remote control Kit to control the internal noise generator of
HD2050.20. Composed of receiver, transmitter with activation switch. Range of
use up to 100 m.

HD2050.20 – Digital power amplifi er
HD2050.20 is a high-power digital amplifi er; it includes a white and pink noise
generator with wireless remote control. Thanks to the auxiliary input it’s possible to
drive it with an external generator to apply, for example, sine sweep signals.
In order not to infl uence the measured levels, a controller can automatically turn
off the cooling fan when taking measurements in a quiet environment or when
measuring reverberation times with interrupted source technique; in such a case the
fan is turned automatically off when you stop the generator’s emission.
With Podware, the parametric equalizer’s control software, it is possible, even in real
time, to activate and manage the following functions: mute, gain, 8-band parametric
equalizer and two shelving fi lters, two HP and LP fi lters, delay. The user setups can
be stored in the amplifi er’s HD2050.20 memory.

HD2050.20: Digital power amplifi er with integrated parametric equaliser. Includes
fl ight case, Podware software, power supply cable HD2050.2, integrated
wireless remote control HD2050.20R, user manual.
Accessories
HD2050.1.5: Signal cable, length 5 m.
HD2050.20R: Wireless remote control Kit to control the internal noise generator of
HD2050.20. Composed of receiver, transmitter with on/off switch. Range of
use up to 100 m.

HD2050.30 – Directional Sound Source for façade insulations
The façade passive directional loudspeaker HD 2050.30 is the ideal tool to create
a uniform sound fi eld in front of a building.
HD2050.30 provides not only the high output emission in a frequency range extended
from 70 Hz to 20 kHz, which is necessary to minimize background noise
contribution, but also a uniform sound distribution, especially at higher frequencies,
which is guaranteed by the particular construction of the high frequencies driver. With
this solution, phenomena of sound concentration due to the directionality of
the normal transducers when used near the wall, are greatly reduced especially on
the high range; measurement accuracy is therefore improved.
Features:
• High Power Level
With a 129 dB spl, HD 2050.30 loudspeaker allows to perform measurements
on high insulated façade even in the presence of high background noise.
• Versatility
HD 2050.30 directional loudspeaker can be easily positioned in the typical
situations found during façade testing. A specifi c support is available
for 45° positioning both on the land and on the stand; with the latter system user
can gain valuable meters in front of the façade, where often space is little. The
weight of 13.5 kg is the right compromise between power emission and portability.
• Excellent diffusion of acoustic fi eld at high frequency.
• Wireless remote control with HD2050.20 digital power amplifi er.
Applications:
• Façade sound insulation
• Sound absorption

HD2050.30: Directional façade loudspeaker, user manual (Signal cable HD2050.1.5
not included).
Accessories
HD2050.30.1: Protective bag for HD2050.30 loudspeaker.
HD2050.30.2: 45° adjustable holder. It allows to direct the loudspeaker to 45° and to
hoist it on the HD2050.1 stand.
HD2050.1: Stand for HD2050 dodecahedron, with steering wheels, extensible
and retractile. Minimum height 1300 mm, maximum height 2050 mm Damping
of the extensible rod.
HD2050.1.5: Signal cable, length 5 m.
HD2050.20: Digital power amplifier with integrated parametric equaliser. Includes
flight case, Podware software, power supply cable HD2050.2, integrated
wireless remote control HD2050.20R, user manual.

HD2050.40 – Subwoofer
HD2050.40 passive subwoofer, is designed to work in conjunction with HD2050
dodecahedron. The system composed of HD2050.40 subwoofer, HD2050
dodecahedron and HD2050.20 digital power amplifier, allows to meet measurement
requirements in the highest acoustic insulation situations.
Acoustic testing laboratories, high performance acoustic materials manufacturers,
acoustic engineers with specific measurement needs or in general where it is
needed a lot of sound energy at low and high frequency, they will find in this system
a complete and effective tool.
Features:
• High performance materials Sound Insulation
A 130 dB SPL in the frequency range 45 Hz to 120 Hz allows the subwoofer
HD2050.40, combined with HD2050 dodecahedron and HD2050.20 digital power
amplifier, to excite rooms in order to measure extremely high insulations at
lower frequencies. HD2050.40 is the correct solution for laboratories
with measurement requirements up to date with the development of highperformance
insulating materials in construction and shipbuilding fields.
• Large rooms architectural acoustics
HD2050.40 subwoofer integrates HD2050 dodecahedron in applications where
reverberation time measurement of high-volume environments is needed. In such
environments, often the sound power and frequency extension characteristics of
dodecahedron loudspeaker, are not sufficient to recreate a good diffuse sound
field or even high sound pressure levels on the walls of large rooms. The
measures in these sound field conditions can be unreliable, or heavily dependent
on the need for a very low background noise. In these cases, HD2050.40 is the
correct solution.
Applications:
• High level sound insulation
• Sound absorption
• Large rooms reverberation time measurements

HD2050.40: Subwoofer supplied with steering wheels, instruction manual. (for
the connection to the HD2050 dodecahedron it is necessary the signal cable
HD2050.1.2 not included).
Accessories
HD2050.40.1: Extensible stand for HD2050.40 subwoofer. Minimum height
1370 mm, maximum height 1970 mm (subwoofer + stand + wheels).
HD2050.1.5: Signal cable, length 5 m.
HD2050.1.2: Signal cable, length 2 m.

HD2040: Machine for the generation of impact noise in accordance with ISO 140-6
and 140-7, ASTM E492 and E1007. Complete with rechargeable lithium ion
battery,built-in battery charger, remote control, 13 mm wrench, instruction
manual. Optional carrying case.
HD2040-V: Carrying case for tapping machine.
HD2050: Dodecahedral loudspeaker according to ISO 140-3 and ISO 3382 standards.
Including signal cable HD2050.1.5, cable HD2050.1.L. User manual. Carrying
case.
HD2050.1: Stand for dodecahedron HD2050, with steering wheels, extensible
and retractile. Minimum height 1300mm, maximum height 2050mm. Damping
of the extensible rod. Supplied with protective bag.

HD2050.20: Digital power amplifi er with integrated parametric equaliser. Includes
fl ight case, Podware software, power supply cable HD2050.2, integrated
wireless remote control HD2050.20R, user manual.
HD2050.30: Directional façade loudspeaker, user manual (signal cable HD2050.1.5
not included).
HD2050.30.1: Protective bag for HD2050.30 loudspeaker.
HD2050.30.2: 45° adjustable holder. It allows to direct the loudspeaker to 45° and to
hoist it on the HD2050.1 stand.
HD2050.40: Subwoofer supplied with steering wheels, instruction manual. (for
the connection to the HD2050 dodecahedron it is necessary the signal cable
HD2050.1.2 not included)
HD2050.40.1: Extensible stand for HD2050.40 subwoofer. Minimum height
1370 mm, maximum height 1970 mm (subwoofer + stand + wheels).
HD2050.1.2: Signal cable, length 2 m.

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Manuals and Brochures here.  

HD2040_HD2050.pdf

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