Art 351 EQ User Manual

351 EQ
31-BAND 1/3 OCTAVE GRAPHIC EQUALIZER
T
he Model 351 31-Band 1/3 Octave Graphic Equalizer may be used in a vari-
ety of applications such as live sound, recording studios, instrument racks, DJ
sound systems and fixed equipment installations. Designed to interface into any
audio system, the Model 351 is a powerful tool for solving audio problems and
creating interesting sound textures.
The Model 351 possesses a long list of impressive features including: constant Q
circuitry, 20mm center detent sliders (with a selectable boost/cut range of 6dB or
12dB), balanced XLR and 1/4” and unbalanced RCA input and output connec-
tions, adjustable high pass and low pass filters, variable input level controls, sig-
nal clip level indicators, ground lift switch, internal power supply and selectable
line voltage switch. The rugged, all-steel constructed chassis occupies 1U rack
spaces and is intended for installation into standard 19” equipment racks.
The 351 31 Band EQ has the features and performance you need for any of your
audio applications requiring precise equalization. For the latest in equalizer tech-
nology today, check out the 351 at your favorite A R T dealer.
FEATURES:
SINGLE CHANNEL
31-BAND GRAPHIC
EQUALIZER
CONSTANT-Q FILTERING
BALANCED XLR, ACTIVE
BALANCED 1/4”, AND
UNBALANCED RCA INPUT
AND OUTPUT
CONNECTORS
VARIABLE HIGH-PASS AND
LOW-PASS FILTERS
+/- 6DB OR +/-12DB
LEVEL ADJUSTMENTS
20MM CENTER DETENTED
FREQUENCY BAND SLIDERS
INDEPENDENT LEVEL AND
BYPASS CONTROLS PER
CHANNEL
DESIGNED FOR YEARS OF
CONTINUOUS, RELIABLE
PERFORMANCE
RUGGED ALL STEEL
CONSTRUCTION
ONE YEAR WARRANTY
L R
Stereo Mix
High Output
Channel Insert
Send
To Input of 351
From Output of 351
Channel Insert
Return
High Output
Low Outputs
~ Using in a 2-Way Speaker System ~
~ In the Insert of a Mixer ~

Art 351 EQ Specifications

Frequency and Filters

frequency bands	31, 1/3 octave, ISO spacing
high pass filter	10Hz to 250Hz, 12dB/oct
low pass filter	3kHz to 40kHz, 12dB/oct

Input and Output

input connections	Active balanced XLR and 1/4” TRS, Unbalanced RCA
output connections	Active balanced XLR and 1/4” TRS, Unbalanced RCA
input impedance	20k ohms (bal), 15k ohms (unbal)

Performance

frequency response	20Hz to 20kHz, +0.5dB
thd + noise	0.01%
signal to noise ratio	-94dB

Power

power	95-130VAC, 50/60Hz, 22 watts (USA) / 190-250VAC, 50Hz (USA)
max. input level	+22dBm
max. output level	+18dBm (bal), +22dBm (unbal)

Weight and Dimensions

dimensions	1.75”H x 19” W x 8.5” D
weight	4.5lbs. (2.5kg)

Summary

351 EQ 31-Band 1/3 Octave Graphic Equalizer

Single Channel 31-Band Graphic Equalizer

The 351 EQ is a single-channel device with 31 bands for graphic equalization.

Constant-Q Filtering

Features Constant-Q circuitry for precise equalization across all bands.

Input and Output Connectivity

Offers balanced XLR, active balanced 1/4", and unbalanced RCA input/output connectors.

Variable High-Pass and Low-Pass Filters

Includes adjustable high-pass and low-pass filters for tone shaping.

Selectable Level Adjustments

Sliders offer selectable boost/cut range of +/-6dB or +/-12dB.

20mm Detented Frequency Band Sliders

Features 20mm center detented sliders for precise frequency band control.

Independent Channel Controls

Provides independent level and bypass controls for each channel.

Rugged All-Steel Construction

Built with a rugged, all-steel chassis for durability and rack installation.

One Year Warranty

Comes with a standard one-year warranty.

351 EQ Specifications and Applications

Technical Specifications

Details dimensions, weight, filter types, impedance, frequency response, and THD.

Product Applications

Lists various applications including live sound, studios, PA systems, and DJ setups.