INTRODUCTION & FEATURES
INTRODUCTION
The MFJ-654
hamProAudio Microphone Equalizer/Conditioner
was designed
with the serious operator in mind. Based on the Broadcast Industry Standard
Speech Compression IC the SSM-2166 from Analog Devices it allows the
operator flexibility in the use of input sources and output methods.
The 8 band Equalizer was designed to use the most desired center frequencies
and “Q” possible.
FEATURES
Choice of 3 Input Sources:
In order to add versatility MFJ has included the
following input sources for the MFJ-654:
1.
A standard RJ-45 input jack common to most new radios.
2.
Standard 8 pin round chassis connector for the majority of the radios
produced in the last 25 years.
3.
MFJ’s own input consisting of a 3.5 -mm jack that allows the user to
choose from feeding audio, audio and a PTT function for use with the Heil
series of Boom-Mic Headsets, or even provides phantom voltage on the
tip for the MFJ-393 Boom-Mic Headphones or on the ring for use with a
computer Boom-Mic or Boom-Mic headset.
These features are included along with allowing you to feed audio from a
computer, TNC or Modem.
Fully Adjustable Gain Amplifier:
You have control of the output level to bring
weak microphones up to a useful level or will provide over 1.2 volts peak to peak
using the auxiliary output.
Wide Range Compression Settings:
With an adjustable compression setting
from 1:1 to 15:1 you control the amount of compression to get your signal
thought the toughest of band conditions.
Adjustable Downward Expansion Level and Delay:
No more feeding the
background noise into your signal. The MFJ-654 allows you to set the level of
Downward Expansion to only pass audio when you are talking and a delay to
minimize the cutting in and out between words.
Selectable 8 Band Equalizer:
You have full control of your audio with up to
±
16dB of control for 8 center frequencies.
