Audio Technica BROADCAST & PRODUCTION BP28 User Manual

User Manual
Thank you for purchasing this product. Before using the product, read through the
user manual to ensure that you will use the product correctly.
Please keep this manual for future reference.
■ Features
• Large-diaphragm condenser element and optimized circuitry deliver exceptional
low-noise performance – ideal for film/TV production and broadcasting applica-
tions
• Overall length of 354.9 mm with a highly directional pickup pattern (BP28)
• Overall length of 567.9 mm with an extremely narrow, highly directional pickup
pattern (BP28L)
• Transformer-coupled output provides smooth sonic character
• Extremely high sensitivity (BP28: -28 dBV / BP28L: -23 dBV), wide dynamic range
(135 dB), and high-SPL capability (BP28: 143 dB / BP28L: 138 dB)
• Flat frequency response for accurate sound reproduction
• Rugged housing made of lightweight, structural-grade aluminum alloy
• Switchable 80 Hz high-pass filter and 10 dB pad
• Patented acoustic port design maintains directionality across the entire frequency
range
■ Notes on use
The BP28 and BP28L require 11V to 52V phantom power for operation, which may be
provided by a mixer or console, or by a separate, in-line source such as the
Audio-Technica AT8801 single-channel or AT8506 four-channel phantom power
supplies.
Avoid leaving the microphone in the open sun or in areas where temperatures exceed
43°C for extended periods. Extremely high humidity should also be avoided.
■ Safety precaution
Although this product was designed to be used safely, failing to use it correctly may
result in an accident. To ensure safety, observe all warnings and cautions while using
the product.
■Cautions for the product
• Do not subject the product to strong impact to avoid malfunction.
• Do not disassemble, modify or attempt to repair the product.
• Do not handle the product with wet hands to avoid electric shock or injury.
• Do not store the product under direct sunlight, near heating devices or in a hot, humid
or dusty place.
■ Connection procedure
Connect the output terminals of the microphone to a device that has a microphone
input (balanced input) compatible with a phantom power supply. The output
connector is an XLRM-type with polarity as shown in the figure below.
Output terminals
PIN1 (ground) PIN2 (hot)
PIN3
(cold)
BP28
BP28L
This product requires 48 V
DC phantom power.
Line + Gradient Large Diaphragm Condenser Microphone BP28 / BP28L
■ Specifications
Polar pattern
Frequency response
Open circuit sensitivity
Impedance
Maximum input sound level
Dynamic range (typical)
Signal-to-noise ratio
Phantom power requirements
Dimensions
Output connector
Audio-Technica case style
Included accessories
• 1 Pascal = 10 dynes/cm 2 = 10 microbars = 94 dB SPL
For product improvement, the product is sublect to modification without notice.
■Polar pattern
0°
330° 30°
300° 60°
270° 90°
240° 120°
210° 150°
180°
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
200 Hz
1 kHz
5 kHz
8 kHz
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
©2017 Audio-Technica Corporation
Global Support Contact: www.at-globalsupport.com
Element Fixed-charge back plate, permanently polarized condenser
Line + gradient
BP28: 20-19,000 Hz,
BP28L: 20-20,000 Hz
Low cut 80 Hz, 18 dB/octave
Pad -10 dB
BP28: -28 dB(39.8 mV) (0 dB=1 V/Pa, 1 kHz)
BP28L: -23 dB(70.8 mV) (0 dB=1 V/Pa, 1 kHz)
250 ohms
BP28: 143 dB SPL (1 kHz at 1% THD), 153 dB SPL (on pad)
BP28L: 138 dB SPL (1 kHz at 1% THD), 148 dB SPL (on pad)
Noise BP28: 8 dB SPL (A-weighted)
BP28L: 3 dB SPL (A-weighted)
135 dB (1 kHz at Max SPL)
BP28: 86 dB (1 kHz at 1 Pa, A-weighted)
BP28L: 91 dB (1 kHz at 1 Pa, A-weighted)
11-52 V DC, 3.4 mA
Low cut: on/off , Pad: on/off
Switch
Weight BP28: 223 g
BP28L: 313 g
BP28: 354.9 mm long / BP28L: 567.9 mm long,
28.0 mm maximum body diameter
Integral 3-pin XLRM-type
BP28: SG6,
BP28L: SG7
Windscreen (BP28:AT8170/BP28L:AT8169),
holder(AT8470), stand adapter (3/8"-5/8"),
carry case
■Frequency response
20
10
0
-10
-20
-30
10 100 1k
Frequency in Hertz
LEGEND
0°, 50cm
Roll-off
27-MAY-2019
10 dB
10k 100k
Form No.ATGC-L0364-19