DODOTRONIC HI-Sound Parabolic Microphone User Guide
- June 3, 2024
- DODOTRONIC
Table of Contents
DODOTRONIC HI-Sound Parabolic Microphone User Guide
Introduction
Hi-Sound parabolic microphones are equipped with high quality electret capsules. The main body is in Delrin and produced with a high quality CNC machine working. The handle and the microphone tube are in aluminum so to improve the overall mechanical strength and decrease the weight.
There are two main kind of Hi-Sound: the mono version with two different type of sensor and the stereo version with stereo capability.
The shielded cable ends with a gold plated stereo 3.5mm mini jack.
In order to power the sensors the recorder needs to give the power with the
PIP (plug in power), so please check the user guide of the recorder to check
this feature. If your recorder does not provide this feature you can connect
the Hi Sound to XLR connector with the XLR to PIP adapter.
**XLR to PIP stereo adapter
**
Applications
The stereo version gives spatial recordings where i.e. in a swamp and listening with a headphone it is possible to understand clear where a frog or a bird is located.
The version with EM172 is equipped with 4 sensors, two for the left and two for the right. The AOM-5024 is equipped with 2 sensors, one for each side. Due to the high sensitivity of the AOM5024 and very low noise you can have good recordings due to the more precise focusing of the sensor.
The mono version has two different kind of sensors: 2 x omnidirectional EM172
and 2 x unidirectional EM184. With this configuration you can record mono
sounds and for the different sensitivity of the two sensors if a signal clips
in the channel with the EM172 you can recover the record on the less sensitive
channel with the EM182.
The EM172 is now discontinued and it is replaced with the EM272 with the same
characteristics.
Hi Sound mono
The signal is routed in a single stereo mini Jack 3.5 mm connector.
The four capsules are perfectly aligned with the outer edge of the dish.
The sensor comprises two high quality EM172 electret omni directional
microphone sensors and two EM184 low noise Uni Directional microphone sensor
PRIMO technology.
HiSound Parts
- Cap spring
- Microphone capsules
- Foam windscreen
- Ring to fix the disc
- Aluminum case tube
- Parabolic disc
- Disc holder
- Aluminum handle with foam grip
- Aluminum tripod mount
- Screws to fix the main body
- Shielded cable
- Stereo gold plated mini jack 3.5mm
HiSound Stereo
This parabolic microphone can capture sounds with a stereo separation, the signal is routed in a single stereo mini Jack 3.5 mm connector.
The stereo effect is given by the channels separation obtained by placing a separator disc (baffle) between two pairs of microphones, positioned to the left and right channels with two capsules for each channel. The dish is composed by two circuits with top and bottom shield; the same shield is tightly connected to ground of the capsules so to minimize the immunity to external interferences.
With two capsules instead of one allows to obtain a signal gain of
approximately +3dB and a lower self inherent noise. Compared to traditional
PZM the greatest improvement in Hi-Sound stereo is done placing the capsule on
the same plane with the baffle and not in opposite direction. This
configuration can add additional signal gain of +6 dB. This trick allows a
high frequency response more than the one obtained in traditional PZM system,
the capsule directed against the baffle constitutes an obstacle to the passage
of low intensity sound wave.
STEREO HiSound Parts
- Baffle for stereo separation
- Foam Windscreen
- Main microphone body
- Ring to fix the disc
- Parabolic disc
- Aluminum case tube
- Disc holder
- Aluminum handle with foam grip
- Aluminum tripod mount
- Screws to fix the main body
- Shielded cable
- Stereo gold plated mini jack 3.5mm
The sensors
There are different configurations
| Sensor type | Noise | Sensitivity | Type | Mounted on: |
|---|---|---|---|---|
| EM172 | Best in class | High | Omnidirectional | Hi-Sound stereo and mono |
| EM184 | Best in class | High | Directional | Hi-Sound mono |
| AOM-5024 | Best in class | Very high | Omnidirectional | Hi-Sound stereo |
Custom configurations are possible on request.
Aluminum tripod mount with Whitworth thread.| 
---|---
Back alignment
The back of the microphone must be aligned with the rim of the handle, so the sensor is at the focus of the parabola.
| 
| Avoid excessive high temperatures! Don’t leave the parabola under the sunlight, this may irreversibly change the shape!
SPECIFICATIONS
- Outer diameter 53 cm
- Focus depth 12.5 mm
- Weight:
- Hi-Sound Mono 770g
- Hi-Sound stereo 820g
- Material PETG
- Audio range (100Hz – 20KHz)
EM172 specifications
- Sensor: EM172 from http://www.primomic.com/
- Sensitivity -28 ±3dB @ 1kHz
- SNR 80dB @ 1kHz
Sensor: 2 x EM184 from http://www.primomic.com/
AOM-5024 specifications
- Sensor: AOM-5024 from http://www.primomic.com/
- Sensitivity -24 ±3dB @ 1kHz
- SNR 80dB @ 1kHz
POLAR PLOT
Options
Windscreen improves the quality of recordings and reduces the effect of the
wind.
Please consider that in windy environment is almost impossible to do good
recordings.
|
---|---
Mono version| Stereo version
Support
Dodotronic di Ivano Pelicella
via Giuseppina Saragat, 6
00073 Castel Gandolfo RM
Italy
VAT IT07343571001
www.dodotronic.com
info@dodotronic.com
Made in Italy
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>