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Microphone Preamplifier
IBF-MP-B-USB
with microphone BIAS supply and USB-sound port
( IBF-MP-B-USB KIT includes EMM8 cal microphone )
User Guide
Draft 2, January 2007
(C) IBF-Akustik e.K. Wolfgang Frank
Alexanderstr. 66 ● 68519 Viernheim ● Germany
Fon. +49 (0) 6204 911 24 91 ● Fax. +49 (0) 6204 911 24 90
sales@ibf-akustik.de
www.ibf-akustik.de
Design and specifications are subject to change without notice. Ask factory for technical specifications
before purchase and/or use. Whenever a doubt about safety issues arises from this product, please
inform us immediately for technical consultation.
1
MP-B-USB-manual_r03.sxw
page
Microsoft, Windows and Windows XP are registered trademarks of Microsoft Corporation
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Summary of Contents for IBF-Akustik IBF-MP-B-USB
- Page 1 Microphone Preamplifier IBF-MP-B-USB with microphone BIAS supply and USB-sound port ( IBF-MP-B-USB KIT includes EMM8 cal microphone ) User Guide Draft 2, January 2007 (C) IBF-Akustik e.K. Wolfgang Frank Alexanderstr. 66 ● 68519 Viernheim ● Germany Fon. +49 (0) 6204 911 24 91 ● Fax. +49 (0) 6204 911 24 90 sales@ibf-akustik.de...
- Page 2 Contents Quick Guide to using the MIC-Amp · Introduction · General Description · Installation · Locating the unit · Signal connections · Operational Notes · Power Switch · Bias Supply · Clipping Indicator · Batteries and external Voltage supplies · ·...
- Page 3 Quick Guide to using the MIC-Amp All of us get in a hurry to use a new device. We want you to fully understand how to use the mic amp and avoiding user faults. Step 1 Open the battery compartment and connect the battery, accumulator or external voltage supply unit. Note: The mic-amp has a build in reverse polarity protection avoiding damages caused by voltage supplies with wrong configurated ouput voltage polarity .
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Page 4: Installation
With its rugged mechanical and electrical construction, compact size and high-quality components, the IBF-MP-B-USB is extremely durable and easy to use. This highly reliable mic preamp will provide years of superb audio performance under regular conditions. -
Page 5: Operational Notes
Operational Notes Power Switch The power switch is a built in function of the gain switch. When power is switched on or off, high level audio "pops" on the microphone preamplifier output are likely. This is a function of DC voltage turning on or off to the circuitry and can also be seen on the indicator LED's. Care must be taken to ensure that these "pops"... - Page 6 Appendices Controls, Connectors and Indicators GAIN & POWER CONTROL Selects the amount of gain from input to output. Fixed gain positions (clockwise) 0dB, 20dB, 34dB, 40dB. Additional variable gain position (VAR) left from the OFF position – The associated trimming potentiometer (gain adjustment 0...40dB) is accessible through the small opening underneath the gain switch.
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Page 7: Specification
BATTERY Compartment, Power supply option Requires one 9V battery, accumulator or plug-in power supply for operation. Due to the 15 mA Power requirements we recommend the use of a accumulator or plugin-power supply instead of a battery. With USB- Option installed: The unit is powered from your computers USB voltage. Note: Plug-in power supply. - Page 8 Hardware USB connection:Use the USB connecting cable supplied with your MP-B-USB amplifier to connect the unit to your computer. With this ultra-compact, bus-powered interface, you can link your Windows® computer with the IBF-Akustik measurement amplifier. There is no setup or special drivers needed—simply plug the interface in a free USB port.
- Page 9 Automated driver installation procedure (Plug-n-Play) Under a WIN2K environment you'll get the following or similar install screens (German install procedure shown). The install procedure doesn't need your assistance it's plug and play at its best and all necessary drivers are coming with your WIN2K or WINDOWS XP software.
- Page 10 Your hardware manager reports the installation of a USB Sound device as well as Human Interface Device (The HID is not used by the MP-B-USB amplifier but is part of the original device driver) MP-B-USB-manual_r03.sxw page Microsoft, Windows and Windows XP are registered trademarks of Microsoft Corporation...
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Page 11: Troubleshooting
Troubleshooting If you have problems with older USB drivers or too many USB drivers installed on your system you should remove them. Now the problem is, that your device manager doesn't show devices that aren't connected to your Windows based computer. This thing can easily be handled following the instructions given in Microsoft article Q315539. -
Page 12: Application Examples
Application examples Acoustic and frequency response measurement using build-in USB sound adapter MP-B-USB-manual_r03.sxw page Microsoft, Windows and Windows XP are registered trademarks of Microsoft Corporation... - Page 13 Acoustic and frequency response measurement using external or computer built-in soundcard Recommended gain settings using EMM-8 cal microphone (can vary due to microphone sensitivity) 0dB gain : Soundpressure Level > 110dBspl 20dB gain : not more than 110dBspl 34dB gain : up to 94dBspl 40dB gain : less than 90dBspl...
- Page 14 Acessories (included in measurement kit MP-B-### KIT or ordered seperately Microphone EMM-8cal (Calibration data on 3 1/2” disc and via email upon request) microphone sensitivity correction factor: multiply 2V/2,2k Standard sensitivity by 1.8 MP-B-USB-manual_r03.sxw page Microsoft, Windows and Windows XP are registered trademarks of Microsoft Corporation...
- Page 15 Measurement Kit MP-B-USB microphone preamplifier (MP-B or MP-B-USB) • EMM-8 cal microphone • microphone clamp • USB cable w/ mini usb connector (USB version only) • MP-B-USB-manual_r03.sxw page Microsoft, Windows and Windows XP are registered trademarks of Microsoft Corporation...
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Page 16: Ce Conformity Statement
product.
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