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A variety of microphones can be used with the Acoustic BLENDER. However, the Crown
GLM-200 is Fishman’s microphone of choice for the BLENDER System.  It is a mini-elec-
tret condenser microphone with a hyper-cardioid response pattern. Its high SPL rating
(130 dB), small size and crystal clear "rising" frequency response  make it ideal for
close-mic'ing acoustic stringed instruments.  Fishman offers the GLM-200 optimized
specifically for use with the BLENDER System.

The BLENDER provides 4.5 Volts of Phantom Power to the GLM-200 via the MICRO-
PHONE channel.  Phantom Power is sent through either the Ring of the STEREO IN
jack (for stereo cable use) or the Tip of the AUX/MIC IN jack (for mono cable use).  

A small zener diode is included with all GLM-200 Crown microphones. It is pre-wired 
to both the Bass and Violin Microphone Assemblies. It is included separately with all 
other kits.  It will prevent harmful electric spikes from damaging the microphone. 

NOTE: The zener diode MUST be wired to the output of the GLM-200. 

(Microphones

installed without the zener diode are not covered under warranty.) However, it is not
needed when a SMART SWITCH is installed.

The GLM-200's small size allows it to be conveniently mounted in or outside the sound chamber of most
stringed instruments.  The microphone, with a (TRS) stereo jack included, can be attached to the instru -
ment using one of the following mounting systems:

GMA - GUITAR MICROPHONE ASSEMBLY

The microphone is mounted in the sound hole with a clip that attaches to the X-brace

under the instrument's soundboard. The jack is run through the instrument's endpin

hole. Soldering and some assembly is required.

BMA - BASS MIC ASSEMBLY

The microphone is held in a isolation collar to reduce low frequency microphon-

ics which are common with bowed instruments. The mount attaches to a bridge

foot with an adhesive backed nylon clip.  The jack (pre wired to Tip) mounts

between the A&D strings. Also available with a pre-wired pickup (BP-100-M).

V-200-M PICKUP AND MINI-MIC

The microphone is held in an isolation collar to reduce low frequency microphonics

which are common with bowed instruments. The mount is integrated into a Carpenter-

style jack that attaches above the instrument’s chin rest.  

UNIVERSAL MICROPHONE ASSEMBLY

For mandolin, banjo, dulcimer, harp. A small alligator clip at one end holds the microphone.  At the
other end, a set of firm gripping rubber-covered jaws attach to the instrument's housing.  

A C O U S T I C   B L E N D E R   S Y S T E M

19

APPENDIX I: THE MICROPHONE

ONE STEREO CABLE

TWO MONO CABLES

GLM-200 

RESPONSE PATTERN

GLM-200 

FREQUENCY RESPONSE CURVE

Содержание ACOUSTIC BASS BLENDER

Страница 1: ...ACOUSTIC BLENDER A C O U S T I C I N S T R U M E N T P R E A M P ACOUSTIC BASS BLENDER A C O U S T I C B A S S P R E A M P O W N E R S M A N U A L...

Страница 2: ...d play with complete free dom of movement 2 STEREO INSTRUMENT CABLE The microphone and pickup signals are fed into a stereo jack also called TRS or Tip Ring Sleeve that is mounted on the instrument Th...

Страница 3: ...t Switch to connect a microphone to the stereo endpin jack for the system to operate See Page 22 PICKUP AND MICROPHONE WITH SEPARATE MONO INSTRUMENT CABLES You may choose to route the pickup and micro...

Страница 4: ...ont panel 3 Set all front panel switches to the OUT position Set both Gain controls fully counter clockwise Set the Output Level to 3 00 Set Bass and Treble controls to 12 00 4 Run a cable from one of...

Страница 5: ...13 TRANSDUCER TREBLE CONTROL See Page 9 14 TRANSDUCER TRIM CONTROL See Page 9 15 TRANSDUCER PHASE SWITCH See Page 9 16 BATTERY LOW LED See Page 10 17 HEADPHONES OUTPUT See Page 10 18 MUTE SWITCH See P...

Страница 6: ...ICROPHONE channel and the Tip signal goes to the TRANSDUCER channel 2 TRANSDUCER CHANNEL ONLY OPERATION Mono Cable One signal from your instrument is routed through a mono instrument cable to the STER...

Страница 7: ...ntom Power for applications that use a dynamic microphone or pickup The OUT position provides 4 5 Volt Phantom Power to the Ring of the STEREO IN jack OR the Tip of the AUX MIC IN jack BASS CUT SWITCH...

Страница 8: ...ill be either in the same position or one in and one out When you set up in a different venue the Phase of the house sound system and room acoustics can contribute to different Phase relationships com...

Страница 9: ...n also be used to calibrate the MICROPHONE and TRANSDUCER Gain controls If there is a disparity between the signal strength of the two channels use the Trim control to normalize the levels Try setting...

Страница 10: ...TCH Shuts off all signals to the main outputs of the BLENDER and allows you to disconnect your cable from the BLENDER or from your instrument silently It does not affect the Phones jack or the Effects...

Страница 11: ...EFFECTS LOOP allows you to interface blended MICROPHONE and TRANSDUCER Channel signals with outboard signal processors and effects such as equalizers compressors volume pedals and reverb units The MI...

Страница 12: ...ignals through a stereo instrument cable you may need to install a Fishman SMART SWITCH for the system to operate See Page 22 2 PICKUP ALONE Single pickup is sent through a mono instrument cable to th...

Страница 13: ...pickup signal Tip is sent to the TRANSDUCER Channel C Surface mount pickup signal Ring is sent to the MICROPHONE Channel Phantom Power must be turned OFF switch pushed IN NOTE Both signals may be rou...

Страница 14: ...ut of your PA System The PA will see a blended signal both microphone and pickup This is a great way to control exactly what the soundman has to work with and what the audience will hear 3 XLR MIX AND...

Страница 15: ...5 4 USING MULTIPLE OUTPUTS All of the Acoustic BLENDER s outputs can be used simultaneously This offers virtually any combination of signal routing and interfacing options to accommodate a wide variet...

Страница 16: ...S LOOPS The BLENDER has three Effects Loops one each for the MICROPHONE TRANSDUCER and MIXED signals The Sends can be used as additional outputs and the Returns can be used as alternate inputs The TRA...

Страница 17: ...AC POWER AC ADAPTER IS DAISY CHAINED TO OTHER DEVICES MUTE SWITCH IN DEVICE APPEARING AT MIX EFFECTS RETURN IS BREAKING THE SIGNAL PATH REMOVE OTHER DEVICES FROM BLENDER s POWER SUPPLY SET MUTE SWITCH...

Страница 18: ...nput Level 20 dBV Input Overload 20 Hz 20 kHz 14dBV Input Stage Impedance Transducer 10 Megohms Microphone without Phantom Power 1 0 Megohms Microphone with Phantom Power 2 2 kilohms Phantom Power 4 5...

Страница 19: ...ly mounted in or outside the sound chamber of most stringed instruments The microphone with a TRS stereo jack included can be attached to the instru ment using one of the following mounting systems GM...

Страница 20: ...s are Guitar 95 105 Hz Bass 65 75 Hz Violin 275 300 Hz Cello 125 135 Hz To address Cavity Resonance Feedback 1 POSITION THE MICROPHONE away from the opening on non flat top instruments This works well...

Страница 21: ...At high volume levels when a mic ed instrument and speaker are in phase the sound pressure from the speaker will excite the instrument s sound chamber creating a feedback loop at the instrument s lowe...

Страница 22: ...wn GLM 200 microphone to a switching jack configura tion creates an electronic version of musical chairs in which the microphone sig nal and negative battery wire are both vying for the same RING term...

Страница 23: ...23 A C O U S T I C B L E N D E R S Y S T E M N O T E S...

Страница 24: ...h the Return Policy as follows This warranty remains valid only if repairs are performed by FISHMAN TRANSDUCERS This warranty gives you specific legal rights and you may also have other rights which m...

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