Audio Technica Midnight Blues MB1000H, Midnight Blues MB1000L Operating And Maintenance
Operation and Maintenance
The MB1000 is available in low- and high-impedance versions.
In both versions, the 3-pin microphone output connector mates
with XLRF-type cable connectors.
In the low-impedance MB100 0L, the Lo-Z balanced signal
appears across Pins 2 and 3, while the ground (shield) connection is Pin 1. Output is phased so that positive acoustic pressure
produces positive voltage at Pin 2 in accordance with industry
convention.
In the high-impedance MB100 0H, the Hi-Z unbalanced output
requires the use of a cable with XLRF-type to 1/4" phone plug
connectors. Pin 2 connection is to the 1/4" phone plug tip, and
Pins 3 and 1 connect to ground. As with all high-impedance
microphones, the use of cables longer than 20' is not recommended, since the added cable capacitance will create
unacceptable high frequency losses and greater possibility
of hum and noise pickup.
These Midnight Blues microphones utilize a MagnaLock on/off
switch. This specially-designed switch operates silently and
may be locked in the “on” position to prevent accidental turnoff during use. To lock, slide the switch up into the “on” position
(Fig. 1a). Using a small flathead screwdriver, rotate the small
screw in the center of the switch 90 degrees (1/4 turn)
counter-
clockwise
(Fig. 1b).
Never force the screw.
When the screw slot
position is horizontal (“across” the microphone body), the
switch is locked. To unlock the switch, turn the screw 90 degrees
clockwise
until the screw slot position is again vertical (in line
with the microphone body).
Never try to turn the switch more
than 90 degrees or 1/4rotation.
The switch may only be locked
in the “on” position. Do not try to turn the screw when the
switch is in the “off” position.
While every effort has been made to provide an extremely
rugged microphone, reasonable care should be taken to avoid
abuse. The microphone can withstand a wide range of temperatures and humidity without damage. Take care to keep foreign
particles from entering the windscreen. If the microphone is
exposed to an environment with small iron or steel filings
(on a workbench, for example) these fine metal particles can
accumulate on the diaphragm, reducing low-frequency response.
Excessive accumulation of dirt on the windscreen will reduce
high-frequency response.
Description
The
MB
1000 is a wide-range moving coil dynamic mic with
a cardioid pickup pattern. It features a high-output neodymium
magnet for maximum performance with all equipment.
The MB1000 is designed specifically for close-up vocal and
instrumental use. A special internal shock mount system minimizes handling and case noise. The microphone also features
the MagnaLock™on/off switch for silent operation. The switch
may be locked in the “on” position to prevent accidental turnoff during use.
The cardioid pickup pattern of the MB1000 is useful in reducing
unwanted background noise and controlling feedback, especially
when used extremely close. Miking instruments or vocalists at
very close range also effectively reduces “leakage” from one
performer to the next. Low-frequency noise is also reduced by
a low-frequency roll-off of sounds more than one foot distant
from the microphone.
The high-output neodymium design and low-mass diaphragm
and voice coil assure excellent signal-to-noise ratios with microphone mixers, tape recorders, and other electronic inputs. The
MB
1000 is capable of undistorted output even in very intense
sound fields.
Enclosed in a rugged die-cast housing, the
MB
1000 features
a special, baked-on “Midnight Blues” finish. In addition to being
attractive and comfortable to hold, this special finish further
reduces handling noise and increases durability.
A multi-stage windscreen reduces wind noise and “popping”
when performers work extremely close. The included microphone clamp permits mounting on any microphone stand
with 5/8"-27 threads.
MB1000
L
.
MB
1000H
Neodymium Dynamic
Cardioid Microphones
Fig. 1a Fig. 1b Fig.1c Fig. 1d
Do
not
try
Do
not
turn to lock switch
Unlocked Locked screw clockwise in the “off ”
Position Position to lock position
O
O
O
N
N
O
N
F
F
MB1000LMB1000H
SPECIFICATIONS
†
Element Neodymium Dynamic
Polar Pattern Cardioid (Unidirectional)
Frequency Response 70-15,000 Hz
Open Circuit Sensitivity MB1000L: 3.5 mV (–49 dBV) at 1 Pa*
MB1000H: 12.5 mV (–38 dBV) at 1 Pa*
Impedance MB1000L: 500 ohms (Lo-Z)
MB1000H: 10,000 ohms (Hi-Z)
Switch MagnaLock™on/off
Weight (less clamp) MB1000L: 9.3 oz (264 grams)
MB1000H: 9.6 oz (272 grams)
Dimensions 6.75" (171.5 mm) long, 2.16" (54.9 mm)
head diameter, 1.38" to .87" (35.0 mm
to 22.0 mm) tapered body diameter
Output Connector Integral 3-pin XLRM-type
Accessory Furnished Tapered slip-in stand clamp for
5
/8"-27 threaded stands
†
In the interest of standards development, A.T.U.S.
offers full details on its test methods to other industry
professionals on request.
* 1 Pascal = 10 dynes/cm
2
= 10 microbars = 94 dB SPL
LEGEND
12" or more on axis
Frequency in Hertz
Response in dB
10 dB
20k
10k
5k
2k
1k
500
200100
50
Frequency Response
1 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
Polar Pattern
XLRM-type Plug Wiring
Lo-Z Balanced
1
/4" Phone Plug Wiring
Lo-Z and Hi-Z Unbalanced
One-Year Limited Warranty
Audio-Technica microphones and accessories purchased
in the U.S.A. are warranted for one year from date of
purchase by Audio-Technica U.S., Inc. (A.T.U.S.) to be free
of defects in materials and workmanship. In event of such
defect, product will be repaired promptly without charge
or, at our option, replaced with a new product of equal
or superior value if delivered to A.T.U.S. or an authorized
service center prepaid, together with the sales slip or other
proof of purchase date.
Prior approval from A.T.U.S.
is required for return.
This warranty excludes defects due
to normal wear, abuse, shipping damage, or failure to use
product in accordance with instructions. This warranty
is void in the event of unauthorized repair or modification.
For return approval and shipping information,
contact
the Service Department, Audio-Technica U.S., Inc., 1221
Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
A.T.U.S. will have no liability for any consequential, incidental, or special damages; any warranty of merchantability
or fitness for particular purpose expires when this warranty
expires.
This warranty gives you specific legal rights, and you may
have other rights which vary from state to state.
Outside the U.S.A., please contact your local dealer for
warranty details.
RED WIRE
TIP SLEEVE
SHIELD
WHITE WIRE
OPTIONAL ACCESSORIES
MBC15H
15' 2-conductor, shielded,
vinyl-jacketed cable with XLRF-type
connector at microphone end, 1/4" phone
plug at equipment end.
MBC15L
15' 2-conductor, shielded,
vinyl-jacketed cable with XLRF-type
connector at microphone end, XLRM-type
connector at equipment end.
AT
8114 foam windscreen (slip-on).
CP
8201 line matching transformer
(Lo-Z to 50,000 ohms).
AT
8202 adjustable in-line attenuator for
use with balanced Lo-Z microphones.
AT
8312 2- conductor, shielded,
vinyl-jacketed, broadcast-type cable
with XLRF-type connector at microphone
end, 1/4" phone plug at equipment end.
Available in 10', 20' & 25' lengths.
AT
8314 2- conductor, shielded,
vinyl-jacketed, broadcast-type cable with
XLRF-type connector at microphone end,
XLRM-type connector at equipment end.
Available in 10', 20', 25', 30', 50' & 100'
lengths.
AT
8407 universal “clothes-pin” clamp fits
both tapered and cylindrical microphones.
AT
8410a shock mount for boom or stand
operation. Universal “clothes-pin”clamp
fits tapered and cylindrical microphones.
AT
8415 low-profile shock mount for
boom or stand operation.
Midnight Blues
®
Audio-Techinca U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
Form No. 0323-9401-02 © 1996 Audio-Technica U.S., Inc. Printed in U.S.A.
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