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Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www.

 

audio.com 

 

PURPOSE 

 
The MX101 is a three input miniature mono mixer designed for demanding in-the-field 
use in broadcast ENG (Electronic News Gathering) and Field Production applications. 
The MX101 incorporates most of the features requested by news professionals, sports 
announcers, and film and video sound engineers into a tiny and rugged package. 
 
The MX100 and MX100C Studio Mixers are lower cost, high quality studio mixers for 
applications, which do not require the full feature complement of the MX101 field mixer. 
The MX100C adds an output limiter to the basic MX100 features. 
 
The companion XP100 Input Expander provides an additional four switchable 
microphone /line inputs and can be used with any of the mixers. 
 
The MX101/ MX100/ MX100C Mixers may be used alone or in combination with the 
XP100 Expander for any application requiring a compact, rugged and professional 
sounding, mixing or input selection system. Several XP100 Expanders may be added for 
up to a 23 input system with minimal noise buildup in the mixing network. The MX100 
or MX100C alone makes an efficient stereo-to-mono combiner, a simple voice-over PA 
driver with inputs for noise masking and background music, or simply a very clean and 
quiet mike or line input mixer 
 
Several power modules for field use are available including both replaceable and 
rechargeable 24V battery packs, DC/DC converters for 6 to18V automotive or belt pack 
battery power and plug-in 24VDC wall supplies. An optional rugged Field Pack carry bag 
includes side protection plates for the mixer with quick-change slide mounts for the 
battery packs. 

 
 
DESCRIPTION 
 
MX101 MONO FIELD MIXER 

 
Three XLR INPUTS with phantom power and front panel MIC/LINE switches drive low 
noise instrumentation preamplifiers with a wide range of internal dip switch selectable 
preamp gains from 60 to 0dB to accommodate either high or low output microphones and 
line inputs. Phantom power can be individually Dipswitch selected for each input and is 
automatically switched off in the line input mode. Front panel switches activate 
individual LO-CUT FILTERS to reduce bumps, thumps, and wind noise and bass build-
up.  
 
A switched TEST TONE oscillator and a SLATE microphone easily mark takes. An 
intense LED bargraph VU meter monitors the line output and is easily viewed even in 
bright sunlight. A LIMIT indicator and switch shows peaks and limiter action. The 
MX101 provides a high-level line output that will drive either balanced or unbalanced 
external loads of 600 ohms or higher. The XLR output may also be jumper-plug 

Содержание MX100

Страница 1: ...ooper Road 902 West Berlin NJ 08091 Voice 856 719 9900 Fax 856 719 9903 www audio com Copyright 1997 2005 Audio Technologies Incorporated Printed in USA MX100 MX100C MX101 XP100 MONO OUTPUT MIXERS OPERATING AND MAINTENANCE MANUAL ...

Страница 2: ...er PA driver with inputs for noise masking and background music or simply a very clean and quiet mike or line input mixer Several power modules for field use are available including both replaceable and rechargeable 24V battery packs DC DC converters for 6 to18V automotive or belt pack battery power and plug in 24VDC wall supplies An optional rugged Field Pack carry bag includes side protection pl...

Страница 3: ... balanced or unbalanced output loads of 600 ohms or greater A bright LED VU meter and headphone amplifier monitor the program output The output may be set to line or microphone level by moving an internal jumper plug The MX100C adds a switched low distortion compressor limiter and a peak indicating LED to the basic MX100 Mixer A rear panel Expander input allows interconnection of two mixers or the...

Страница 4: ...rn both positions OFF for 20dB for microphone inputs and position 4 ON 10dB OFF 0dB for line inputs The preamps will have an input clipping level of 18dBu minus the selected gain e g 42dBu input clipping at 60dB gain 8 5mV peak 22dBu at 40dB 85mV peak and 2dBu at 20dB gain 85V peak The gain should be set such that the maximum microphone output level is always below the input clipping level Some sh...

Страница 5: ...l dipswitches to assure maximum headroom and control resolution If you have a preferred position for a particular input you can pop out the knob cap and reposition its reference indicator line to the twelve o clock position A selection of colored knob caps is included with the unit to allow you to color code the inputs The Master control adjusts the Line Output as indicated by the LED meter The Ma...

Страница 6: ... characteristic Internal meter calibration pot R70 sets the 0VU meter reference to 4dBm output level and is adjustable to read 0VU for outputs from 10 to 8dBm COMPRESSOR LIMITER The MX101 and the MX100C incorporate a low distortion optical compressor with a front panel switch and peak indicating LED The compressor threshold adjustment R76 is factory set for a sine wave threshold at 3VU meter indic...

Страница 7: ...101 provides a regulated 20 2VDC for phantom powering microphones from inputs as low as 21VDC Active regulation of the phantom power supply helps eliminate any possibility of oscillation due to unbalanced loading of the phantom supply by the microphone They share a common external 24VDC Wall Wart type power supply for fixed installations A pair of loop thru DC connectors on the rear of each module...

Страница 8: ...t may be necessary to have the shipping company inspect the unit and the box at your location Count the pieces Don t throw out the boxes and packing material until you are sure you have everything that is coming to you The XP100 comes with an audio cable P N20612 1 a DC cable P N20602 1 and an instruction book The MX100 comes with an instruction book but does not come with any cables The MX100 nee...

Страница 9: ...d 54dB attenuator pad into the output line To set the 0VU meter indication to an output level other than the factory setting of 4dBm adjust trimpot R70 CUE MONITOR HEADPHONE LEVEL The CUE MONITOR level adjust trimmer on the MX101 R74 is factory set for a comfortable listening level at a director s cue input level of 10dBu 25Vrms but can be adjusted as required MOUNTING You may rack mounted one two...

Страница 10: ...cable shield and DC return connection for phantom microphone power Pin 1 of the output connector is grounded Active balanced outputs require a reference ground connection to the receiving device for proper operation This ground can be provided by the rack frame or a studio buss connection but is preferably carried through by the output cable shield POWER CONNECTIONS Hum and noise performance of th...

Страница 11: ...ence level and must not be accidentally grounded by dangling audio interconnects cables METERS CALIBRATION To set adjust the master gain control for the desired OVU output level in the range of 8 to 10dBm 4dBm nominal with an independent audio voltmeter Adjust the internal meter calibration trimpot R70 for 0VU indication on the bargraph meter SWITCH MAINTENCE The front panel MIC LINE switches have...

Страница 12: ...ain 20Hz to 20kHz measurement bandwidth GAIN MX MIC 52 72 92dB LINE 32 42dB Gain of each input is selectable XP100 MIC 40dB LINE 0dB HEADPHONE OUTPUT 100mW to 600 150 Ohm Headphones TRS Jack LIMITER MX101 MX100C only 5 1 SLOPE Attack time 50ms Recovery time 300ms for 10dB change PHANTOM POWER 20VDC regulated 4ma through paralleled 3 32K Ohm resistors POWER 24VDC 22 to 30 VDC max MX100 and MX101 dr...

Страница 13: ...320 Male 3 pin AC input connector 24VDC 4 amp 230VAC 50 Hz Rack Mount Kits 20604 501 Center mount for single unit 20604 502 side by side mounts for two units 20604 503 side by side mounts for three units Desk Mount Kits 20617 501 Angled Desk Mount Base 20617 502 Angled Desk Mount Base and One Stacker 2 units high 20617 503 Angled Desk Mount Base and Two Stackers 3 units high 20617 504 Stacker 2 un...

Страница 14: ...ary NP 1 type batteries REMOTE POWER PACKS For use with Field Accessories PPA 1 Integrated power pack assembly for remote operation which mounts to a mixer Includes housing with rechargeable 24VDC gel cell battery pack four to six hours operation and an external battery charger operating at 115VAC 60 Hz PPA 2 Same as above except battery charger operating at 230VAC 50 Hz Euro plug Contact factory ...

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