Audio-Technica AT 4060 User Manual
AT4060
CARDIOID VACUUM TUBE
CAPACITOR STUDIO MICROPHONE
Description
The AT4060 is a cardioid vacuum tube capacitor microphone
designed for use in the most demanding studio applications. It
utilizes dual, gold-plated and aged, large-diaphragm elements for
extended frequency response. The AT4060 has a wide dynamic
range of 131 dB and the ability to accept up to 150 dB SPL without
capsule or electronic-system distortion above 1% T.H.D. These
capabilities, coupled with the benefits of exceptionally low self-noise
and very high output, combine in a versatile microphone that meets
the diverse requirements of contemporary recording situations,
while still providing the warm sound of vintage valve design.
The AT4060 is the culmination of extensive field evaluations in
studio environments with resultant significant advances in microphone performance factors. Each hand-selected tube is individually
aged and tested, then employed in a uniquely-configured circuit for
enhanced tube performance. Specially-tuned elements improve
dynamic range and the ability to handle high SPLs without sacrificing high-frequency characteristics. Floating-construction mounting
of the elements provides isolation from noise and vibration.
The AT4060 incorporates a dual-diaphragm configuration that
allows undistorted reproduction of high sound pressure level
signals at all frequencies. The 2-micron-thick, vapor-deposited gold
diaphragms provide accurate reproduction of even the most subtle
sounds, especially high-frequency signals not easily reproduced by
conventional large-diaphragm condenser transducers. For a warm,
true-to-life quality, the dual, large-diaphragm design provides
remarkable low-frequency performance.
The diaphragm of every AT4060 is aged through five different
steps to assure the optimum characteristics achieved will remain
constant over years of use.
The symmetrical housing assembly surrounding the microphone
capsule and its open acoustical environment allow the off-axis
response to be ideally suited for studio work where natural reproduction of off-axis sound is of paramount importance.
The AT4060 operates in conjunction with the included AT8560
power supply. The power supply has low-impedance output
(3-pin XLRM-type connector) and a ground-lift switch. Mains v oltage
(120V or 230V AC) is selectable via a s witch on the bac k of the unit.
The AT4060 includes an AT8447 shock mount to provide
mechanical isolation and secure mounting. This effective shock
mount fits 5/8"-27 threaded stands. A stand clamp without shock
mount, the AT8430, is available as an optional accessory.
Operation
As with any sophisticated vacuum tube equipment, the AT4060
requires a period of warm-up time before use. Allow at least 15
minutes after switching on the power supply f or the unit’ s electronics
to stabilize.
Always turn the power supply off while connecting or disconnecting any cables.
Architects and Engineers Specifications
The microphone shall be a dual-element vacuum tube capacitor-type with a cardioid polar pattern and a frequency response of
20 Hz to 20,000 Hz. It shall operate from an external AT8560 power
supply (included) capable of operating from either 120V or 230V A C.
The dual elements shall be internally shock mounted.
Nominal open-circuit output voltage shall be 19.9 mV at 1 kHz, 1
Pascal. The output impedance shall be 200 ohms and output shall
be balanced. The microphone shall accept a 150 dB SPL at 1 kHz
while producing no greater than 1% T.H.D.
A 32.8' (10 m) cable with 6-pin XLR-type connectors shall be
supplied for connection between the microphone and power supply.
The microphone shall have a length of 8.27" (210.0 mm), a
maximum body diameter of 2.10" (53.4 mm), and a weight of 22.6 oz
(640 grams). Finish shall be matte black. A separate AT8447 shock
mount and rack-mount adapters for the power supply shall be
included.
The Audio-Technica AT4060 is specified.
40 SERIES PRECISION MICROPHONES
AT4060
Specifications
†
ELEMENTS (TWO) Externally polarized (DC bias) capacitor
POLAR PATTERN Cardioid (Unidirectional)
FREQUENCY RESPONSE 20-20,000 Hz
OPEN CIRCUIT SENSITIVITY (1 kHz) –34 dB (19.9 mV) ± 2 dB, re 1V at 1 Pa*
1
IMPEDANCE 200 ohms
MAXIMUM INPUT SOUND LEVEL 150 dB SPL, 1 kHz at 1% T.H.D.
149 dB SPL, 1 kHz at 0.5% T.H.D.
NOISE, TYPICAL (A-WEIGHTED)
2
19 dB SPL
DYNAMIC RANGE, TYPICAL 131 dB, 1 kHz at 150 dB SPL
SIGNAL-TO-NOISE RATIO, TYPICAL 75 dB, 1 kHz at 1 Pa*
POWER REQUIREMENTS AT8560 power supply (120V/ 230V AC)
WEIGHT (LESS CABLES)
Microphone only 22.6 oz (640 grams)
Microphone w/shock mount 33.5 oz (950 grams)
Power supply 4.19 lbs (1.9 kilograms)
DIMENSIONS
Microphone 8.27" (210.0 mm) long,
2.10" (53.4 mm) maximum body diameter
Power supply 8.27" (210.0 mm) W x
8.86" (225.0 mm) D x
1.73" (44.0 mm) H
ACCESSORIES FURNISHED AT8560 power supply; AT8447 shock mount for
5
/8"-27 threaded stands; 32.8' (10 m) cable with
6-pin XLR-type connectors for use between
microphone and power supply; AC power
cable; rack-mount adapters for power supply;
protective mic carrying case
† 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/cm2 = 10 microbars = 94 dB SPL
1
Measured at diaphragm
2
Using Audio Precision System One
Optional Accessories:
• AT8137 large cylindrical foam windscreen.
• AT8314 2-conductor, shielded, vinyljacketed, 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.
• AT8430 stand clamp for 5/8"-27
threaded stands.
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.
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, or removal or defacing
of the product labeling.
For return approval and shipping information,
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.
One-Year Limited Warranty
Prior approval from A.T.U.S. is required for return.
contact
Polar Pattern
330°
300°
270°
240°
210°
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Frequency Response
200
500
Frequency in Hertz
LEGEND
50
100
12" or more on axis
0°
30°
60°
90°
120°
180°
150°
10 dB
Response in dB
2k
1k
10k
5k
20k
2.10"
53.4 mm
AT4060
0.83"
21.0 mm
0.75"
19.0 mm
8.27"
210.0 mm
Dimensions
Audio -Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio -Technica Limited, Old Lane, Leeds LS11 8AG England
Form No. 0345- 0825-0 0-B/ W 1998 Audio-Technica U.S., Inc. Printed in U.S.A.
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