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BRIDGE 4A 19" DI box, 4 channels, active

Item No.: PBRIDGE4A
Series: BRIDGE
Balancing and impedance matching for guitar, bass, keyboards & synthesizers
Eliminates ground loop hum thanks to galvanic transformer isolation
4 independent DI boxes in a solid 19" housing (1U)
Higher output level than a passive DI box
THRU-output for passing the input signal
Audio over Cat output (AES72 Type 5e) for forwarding all signals via a single Cat cable
Pure and unaltered low-noise audio
Handles even high-level inputs without distortion thanks to switchable -30dB pad
Ground-lift switch for each output
Power supply: 9V DC, center negative
Engineered in Germany
 

Contents and categories

Display all

Contents and categories

Series

Search suggestions

Display all results
Balancing and impedance matching for guitar, bass, keyboards & synthesizers
Eliminates ground loop hum thanks to galvanic transformer isolation
4 independent DI boxes in a solid 19" housing (1U)
Higher output level than a passive DI box
THRU-output for passing the input signal
Audio over Cat output (AES72 Type 5e) for forwarding all signals via a single Cat cable
Pure and unaltered low-noise audio
Handles even high-level inputs without distortion thanks to switchable -30dB pad
Ground-lift switch for each output
Power supply: 9V DC, center negative
Engineered in Germany
Description

Are you aiming to capture the pure signal from a guitar, bass, or keyboard without any noise and tonal loss, even over long cable runs? In that case, you need a DI box - and a high-quality one at that - to ensure your sound won't be compromised.

The BRIDGE 4A from Palmer is a 4-channel, active DI box in 19" rack format for feeding the unbalanced and high-impedance signals of electric instruments such as guitar, bass, keyboard or synthesiser into the microphone inputs of a mixing console. It provides a transformer-balanced, low-impedance signal at the outputs and eliminates mains hum and interference caused by ground loops. This keeps the sound unadulterated: brilliant, low-noise and without interference.

Each channel is equipped with a 6.3 mm jack input, a THRU-Out (for forwarding the input signals to an amplifier, for example), and two transformer-balanced XLR outputs - one at the front and one at the rear.

Thanks to a switchable 30dB pre-attenuation, the BRIDGE 4A can be fed with extremely high input levels in addition to line signals, which means it can even be looped in between the amplifier output and speakers, for example. The Audio-Over-Cat output enables the signals of all 4 channels to be routed via a single Cat (Cat5e or higher) cable. This saves material, space and time. The active circuit leaves the frequency response unaffected, achieves a high dynamic range and delivers a higher output level than a passive DI box.

The BRIDGE 4A is the ideal solution for audio technicians, semi-professional and professional musicians as well as recording studios that value reliable and durable products.

Specifications
General data
Product type
DI boxes
Type
active
Transformer isolated
yes
Channels
4
Inputs
4
input type
unbalanced
Input connectors
6.3 mm jack
Input pad
0 dB / 30 dB
Number of outputs
4 (+ 4 parallel XLR outs + AoC)
THRU outputs/channel
1
Output type
balanced
Output connectors
RJ45, XLR
Cabinet material
sheet steel
Width
482 mm
Width
19 "
Depth
90 mm
Height
44 mm
Height
1 U
Weight
1,96 kg
Ground lift switch
yes
Operating voltage
9 V
Power consumption
2 W
Additional Features
AoC output with ground lift, power LED
Ambient temperature during operation
-20 - 70 °C
Relative Humidity
< 80 %, not condensing
Accessories (included)
external power supply PW9V
Audio
Max. input level (< 1% THD, 20 Hz)
+ 14 dBu
Max. input level (< 1% THD, 1 kHz)
+ 23 dBu
Max. output level (<1% THD, 20 Hz - 20kHz)
+19 dBu
Frequency response (±0,5 dB, relative 1 kHz)
20 Hz - 20 kHz
Input impedance (1 kHz)
390 kOhm
Output impedance (1 kHz)
110 Ohm(s)
THD + N (30 Hz, +4 dBu, unity, unweighted)
< 0.0026%
THD + N (1 kHz, +4 dBu, unity, unweighted)
< 0.0011%
IMD (SMPTE) (60 Hz / 7 kHz, 4:1, +4 dBu)
< 0.0021%
SNR (+4 dBu, 22 kHz BW, unity, unweighted)
105 dB
Transformer ratio
1:3
Downloads & links
Name
Category
Type
File size
User manual Manual pdf 2 MB
Information sheet Data Sheet pdf 3 MB
Palmer Catalogue Catalog pdf 31 MB
Product images Image files zip -
User manual

Category: Manual

Type: pdf

File size: 2 MB

Information sheet

Category: Data Sheet

Type: pdf

File size: 3 MB

Palmer Catalogue

Category: Catalog

Type: pdf

File size: 31 MB

Product images

Category: Image files

Type: zip

File size: -

(0) Download files
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