Summary of Contents for GHM DeltaOHM HD2050
- Page 1 English Operating manual Omnidirectional Sound Source HD2050 Power amplifier/noise generator HD2050.20 Facade Directional Loudspeaker HD2050.30 Companies / Brands of GHM www.deltaohm.com Keep for future reference.
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Page 2: Table Of Contents
INDEX INTRODUCTION ....................... 3 DESCRIPTION ......................4 HD2050 + HD2050.20 ..............5 SYSTEM 2.1.1 ON ............6 LECTRICAL CONNECTIONS AND POWER 2.1.1.1 Use with HD2050 dodecahedron + HD2050.20 amplifier ........6 2.1.1.2 Use with HD2050.30 facade loudspeaker + HD2050.20 power amplifier ....7 2.1.1.3 Use with HD2050 dodecahedron + HD2050.40 subwoofer + HD2050.20 amplifier ... -
Page 3: Introduction
1 INTRODUCTION 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 • Buildings acoustics • Acoustic absorption • Reverberation time • Room acoustics ( RASTI, STI, Clarity, Definition descriptors etc.) •... -
Page 4: Description
2 DESCRIPTION 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 supplied Podware software 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. -
Page 5: Hd2050 + Hd2050.20 System
HD2050 + HD2050.20 SYSTEM To connect HD2050 dodecahedron to HD2050.20 amplifier refer to connectors description shown in the picture below. Output connector Noise (signal to loud- generator speaker) section line input Mains and Power Antenna connector Manual signal activation Pink/White noise selector Level control 0 = MIN... -
Page 6: Electrical Connections And Power On
2.1.1 E LECTRICAL CONNECTIONS AND POWER Below three typical connection configurations: 2.1.1.1 Use with HD2050 dodecahedron + HD2050.20 amplifier Before 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). -
Page 7: Use With Hd2050.30 Facade Loudspeaker + Hd2050.20 Power Amplifier
2.1.1.2 Use with HD2050.30 facade loudspeaker + HD2050.20 power amplifier Before 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"... - Page 8 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 page Errore. Il segnalibro non è definito. in the specific section of this manual. Connect the Neutrik SPEAKON signal cable (2mt length HD2050.1.2) from HD2050 dodecahe- dron to one of the two subwoofer’s input connectors (no matter which one);...
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Page 9: Noise Generator
2.1.2 N OISE ENERATOR Fig. 3 – Noise Generator 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”... -
Page 10: Power Amplifier And Dsp (Digital Signal Processor )
2.1.3 P DSP (D OWER AMPLIFIER AND IGITAL IGNAL ROCESSOR Fig. 4 –PRESETS, User DSP sections and amplifier connectors HD2050.20 power amplifier uses a Digital Signal Processor with two different selectable “presets”; the needed preset can be activated using the “PRESETS” switch on the amplifier’s front panel. - Page 11 stored on the PC memory (file with *.dse extension) and when used are loaded on amplifier’s DSP. When the switch “User DSP” is set to ON, it will be activated the last equalization curve present while PC connected. If the switch is set to OFF , the “User DSP” is disabled and the response curve will be the “presets”...
- Page 12 Fig. 5 – L-Shaped adapter for HD2050 dodecahedron 2.1.4 HD2050.20R REMOTE CONTROL KIT The integrated HD2050.20R remote control kit allows to remotely control the internal noise generator of HD2050.20. This kit consists of a portable transmitter and an integrated receiver that can be activated at a distance up to 100mt.
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Page 13: Hd2050.1 Stand
2.1.5 HD2050.1 STAND Tripod with adjustable height and foldable. Extremely stable and light weight, it is supplied with integrated wheels allow- ing to translate the dodecahedron on the floor with no need to dismount it. HD2050.1 stand has a security system to slowdown the pole when extended in order to avoid possible damage to dodeca- hedron. -
Page 14: Facade Loudspeaker
2.1.7 HD2050.30 FACADE LOUDSPEAKER The HD 2050.30 façade loudspeaker is the ideal tool to generate a uniform sound field on the front of a building It provides not only a high sound power emission (into the range 70Hz-20KHz), needed in case of high background noise, but also a uniform sound distribution especially at high frequencies, guar- anteed by the particular construction of the driver. - Page 15 Fig. 12 –mounting the loudspeaker on the sup- port The support has two screws with knob for each side (see figure above). The screw with the larger size is coupled to a female thread in the rear panel of the case. The coupling hole is posi- tioned under the compartment for electrical connectors.
- Page 16 HD2050.30.1 carrying bag For the transport of HD2050.30 loudspeaker it’s available HD2050.30.1 protective bag; this accessory allows to transport and protect loudspeaker from scratches, dust and liquids. The bag is equipped with wheels in the rear and a handle in the front. The bag is not designed to protect the loudspeaker from shocks...
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Page 17: Connectors For Remote Management
3 CONNECTORS FOR REMOTE MANAGEMENT The USB connector on the front panel of HD2050.20 amplifier, enables to connect the system to a PC. The connection allows to remotely control the amplifier’s DSP (Digital Signal Processor), to modify some parameters or customize the frequency response of the system using the para- metric equalizer. -
Page 18: Using Podware Software
4 USING PODWARE SOFTWARE HD2050.20 digital amplifier has an internal DSP which can be programmed using provided PodWare software. Connecting the amplifier to a PC via the USB cable it’s possible, in real time, to perform the following operations: activate the mute, gain, 8-band parametric equaliz- er + two shelving filters, HP and LP filters, delay. - Page 19 Verify that the communication port is the right one on the menu >> Network >> ComPort. When the driver is installed, the system assign a Com port. In order to check which port is assigned by the system go on Start >> Control Panel >> System >> Hardware >> Device Manager.
- Page 20 Under the “shelf” filters section are available also two high-pass and low-pass filters; cut frequency and shape can be modified. As soon as necessary adjustments have been applied to the system it’s possible to save such configuration and recall it when needed. To save the equalization created go on menu >>...
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Page 21: Carriage
CARRIAGE To transport the HD2050 dodecahedron it’s recommended to use the protected HD2050V car- rying case. The L-shaped adapter connected to dodecahedron input must be removed when the dodeca- hedron is placed in the carrying case. The carrying case protects the dodecahedron and the speakers against small entity shocks. -
Page 22: Technical Specifications
5 TECHNICAL SPECIFICATIONS HD2050 - DODECAHEDRON Standards: UNI EN ISO 140-3: 2006 UNI EN ISO 3382: 2001 Nominal Impedance 12+12 Ohm Power Peak 540 + 540 W Nom. 180+180W Loudspeakers 12 x 5" 80Hz-16KHz (1/3 octave bands) Frequency Range Connectors Neutrik ®... - Page 23 Remote control Kit Controls the HD2050.20 internal generator Composed of internal receiver and external transmitter with activation button. Range up to 100mt HD2050.1 stand Tripod with extendable and retractable wheels. Damped rod. HD2050.40 SUBWOOFER RMS power 500 W Nominal impedance 4 Ohm Loudspeaker LF 1 x 12”...
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Page 24: Hd2050 - Directivity (Iso 140 - Iso 3382)
6 HD2050 – DIRECTIVITY (ISO 140 – ISO 3382) The UNI EN ISO 140-3:2006, paragraph C1.3, requires that: "to check directional radiation of loudspeaker according to UNI EN ISO 140-3:2006 should be measured the sound pressure lev- els around the source in a free field. The source must be supplied with a signal and noise measurements must be performed in 1/3 octave bands."... - Page 25 Fig. 18 – Directivity chart calculated according to ISO 3382 Fig. 19 – Directivity polar plots for 1/1 octave bands. 30° sectors. Display 10dB/div. HD2050 V1.2...
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Page 26: Hd2050.30: Sound Power Level
6.1.1 HD2050.30: SOUND POWER LEVEL HD2050 sound power level has been calculated following instructions contained in ISO 3744 standard. Starting from sound pressure level measurements in 1/3 octave bands, made over a reflecting surface and in a free field, the Lw (re 1pW) sound power level is obtained. Fig. -
Page 27: Ordering Codes
ORDERING CODES HD2050: dodecahedron complying with ISO 140-3 and ISO 3382 standards; supplied with signal cables HD2050.1.5, HD2050.1.L and instruction manual. HD2050.1: stand with wheels and carrying bag. Retractable and extendible: min height 1300 mm, max height 2050 mm. Damped rod. HD2050V: carrying case for HD2050 dodecahedron. - Page 28 G U A R A N T E E TERMS OF GUARANTEE All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement.
- Page 29 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | sales@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
- Page 30 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | sales@deltaohm.com V1.2 11/12/2020...
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