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Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
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PR-75a Receiver
Microphone input impedance for electret type microphone - 3000 ohms
Aux/Line input impedance - 10 k ohms at 0 dBV nominal
Microphone - Micro-mini mono 2.5 mm
Auxiliary - Mini stereo 3.5 mm
Audio: Tip and sleeve
Battery Charging: Tip and sleeve
Synthesized channel selection switches
Power On/Off switch
Audio input gain control
Power/Battery status indicator
Audio (voice level) modulation indicator
Manual/Automatic compand switch
80Hz to 10kHz
Less than 1% at 80% modulation
Soft compressor with 30 dB linear overload protection; attack time - less than 1 ms, recovery time - 10 ms
10 kHz deviation companded
88 synthesized channels in the 72-76 MHz band
Better than 50 dB below carrier
20 ppm XTL controlled Digitally synthesized
40 mW to antenna system
Type Accepted under FCC Part 90
Body-worn microphone cord
35 mA average current
9 volt alkaline Eveready 522 or equivalent for up to 14 hours of use
Rechargeable 9 volt Ni-MH 200 mAh battery for up to 7 hours of operation
Rechargeable 9 volt Lithium Polymer 500 mAh battery for up to 14 hours of use
1.06 x 2.25 x 3.50" (2.69 x 5.71 x 8.89cm)
5oz (141.7g)
After extensive research and development, the Comtek M-175 Frequency Synthesized Wireless Microphone Transmitter emerges as a top-tier choice for professionals seeking reliable one-way remote communication. Operating within the 72-76MHz frequency range, this compact, body-worn transmitter is engineered with the latest digital and analog technologies.
The M-175 is designed to deliver superior sound quality, characterized by low residual noise, a wide dynamic range, and an extended frequency response. This results in the most natural and clear audio output possible, making it an ideal choice for professionals in the audio and video industry.
For those seeking additional control over background noise and enhanced intelligibility, the M-175 offers compatibility with the HM-100CL headset microphone. This feature ensures high gain before feedback, providing an effective solution for environments with high ambient noise levels.
One of the standout features of the Comtek M-175 is its microphone On/Off switch. This allows users to conveniently mute the microphone input while keeping the auxiliary input active. This feature is particularly useful when using portable media players, as the M-175's auxiliary input can transmit earphone-level audio signals.
Moreover, the M-175 is designed with a smart attenuation feature. When an auxiliary input signal is present and the microphone On/Off switch is activated, the auxiliary input signal is automatically reduced by 6 dB. This ensures the speaker's voice is always prioritized, making the Comtek M-175 a versatile and user-friendly wireless microphone transmitter.