Peavey CEQ 280a User Manual

S P E C I F I C A T I O N S

CEQ™ 280a

Computer-Controlled,
MIDI Graphic
Equalizer

SPECIFICATIONS

Frequency Response:

±1 dB, 5 Hz to 50 kHz

Distortion:

< 0.005% 20 Hz to 20 kHz (EQ Flat

bandwidth limited 10 Hz to 80 kHz)

Output Noise (EQ Flat):

< -94 dBu (ref 0.775V; 20 Hz to 20 kHz)

Dynamic Range (EQ Flat):

> 110 dB (20 Hz to 20 kHz)

Inputs:

Electronically balanced, XLR or 1/4"

phone TRS

Input Impedance:

> 10 K ohms

Input Common Mode
Rejection Ratio:

> 40 dB

Maximum Input Level:

+25 dBu (14V RMS) ref 0.775V

Outputs:

Electronically balanced, XLR or 1/4"

phone TRS

Output Impedance:

100 ohms

Maximum Output Level:

+19 dBu (7V) Hi-Z load (ref 0.775V)
+18 dBm 600 ohm load (1 mW)

Filter Frequencies:

32 Hz to 16 kHz on ISO centers

Gain Control Range:

±12 dB

Maximum Boost/Cut:

±12 dB in 12 dB range setting
±6 dB in 6 dB range setting

EQ Band Filter Q:

4.77

Display:

40-character x 2-line Liquid Crystal
Display

Power Consumption:

Domestic: 12 W, 60 Hz, 120 V AC
Export: 12 W, 50/60 Hz, 230 V AC

FEATURES

• 28-band graphic equalizer

• Constant EQ filters on 1/3 octave,
ISO centers

• Real-time analyzer

• Automatic room equalization

• Built-in pink noise

• Easy-to-read, 40-character x 2-line
Liquid Crystal Display

• Nonvolatile storage of 128 EQ curves

• Nondestructive EQ curve addition

• EQ curve compare; ±12 dB in 1 dB
steps, ±6 dB in 0.5 dB steps

1

• Combination XLR­connectors

• Electronically-balanced inputs and
outputs

• Software security lock

• Feedback finder

• MIDI controllable

• MIDI compatible with the original
CEQ™ 28/CEQ™ 28R

• Relay front panel and power-off
bypass

• Switchable 40 Hz subsonic filter

• Single I.U. standard rack space

• Internal power supply

/4" phone input

DESCRIPTION

The CEQ™ 280a is a computer­controlled, MIDI graphic equalizer
designed to meet the needs of sound
reinforcement installations. The circuit
design assures reliable, long-term
operation and smooth, trouble-free
installation.

ARCHITECTURAL ACOUSTICS

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ARCHITECTURAL & ENGINEERING SPECIFICATIONS

The graphic equalizer shall have electronically balanced XLR and 1/4" phone type connectors for input and output. The unit
shall have a 40-character x 2-line LCD. The unit shall have front panel buttons to access the EQ, RTA, Bypass, Global,
Store and Recall features. In addition, it shall have six buttons for navigating through the various parameters and screens.

The unit shall be packaged in a rugged steel chassis 19" wide by 13/4" high by 115/8" deep. The unit shall have a
frequency response of 5 Hz to 50 kHz ±1 dB. The unit shall have a THD not to exceed 0.005%. The unit shall have an
output noise value less than -94 dBu. The unit shall have a dynamic range greater that 110 dB. The unit shall have an input
impedance greater than 10 K ohms. The unit shall have a rejection ratio greater than 40 dB. The unit shall have a maximum
input level of +25 dBu. The unit shall have an output impedance of 100 ohms. The unit shall have a maximum output level of
+19 dBu (Hi-Z load), +18 dBm 600 ohm load. The unit's filter frequencies shall be 32 Hz to 16 kHz on ISO centers. The unit
shall have maximum boost/cut of ±12 dB in 12 dB setting and ±6 dB in 6 dB setting. The unit shall have an EQ band filter Q
value of 4.77. The unit shall be called the Peavey Architectural Acoustics Division model CEQ™280a.

LIMITED WARRANTY

Peavey Electronics Corporation warrants to the original purchaser of this new Architectural Acoustics product that it is free
from defects in material and workmanship. If within one (1) year from date of purchase a properly installed product proves to
be defective and Peavey is notified, Peavey will repair or replace it at no charge. (Note: Batteries and patch cords not
covered.) “Original purchaser” means the customer for whom the product is originally installed.

Damage resulting from improper installation, interconnection of a unit or system of another manufacturer, accident or
unreasonable use, neglect or any other cause not arising from defects in material and workmanship is not covered by this
warranty. The warranty is valid only as to products purchased and installed in the United States and Canada.

THIS LIMITED WARRANTY IS IN LIEU OF ANY AND ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE. UNDER NO
CIRCUMSTANCES WILL PEAVEY BE LIABLE FOR ANY LOST PROFITS, LOST SAVINGS, INCIDENTAL DAMAGES OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT, EVEN IF PEAVEY
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THIS LIMITED WARRANTY IS THE ONLY
EXPRESSED WARRANTY ON THIS PRODUCT, AND NO OTHER STATEMENT, REPRESENTATION, WARRANTY, OR
AGREEMENT BY ANY PERSON SHALL BE VALID OR BINDING UPON PEAVEY.

Peavey’s liability to the original purchaser for damages for any cause whatsoever and regardless of the form of action is
limited to the actual damages up to the greater of Five Hundred Dollars ($500) or an amount equal to the purchase price of
the product that caused the damage or that is the subject of or is directly related to the cause of action. This limitation of
liability will not apply to claims for personal injury or damage to real property or tangible personal property allegedly caused
by Peavey’s negligence. For information on service under this warranty, call a Peavey customer service representative at
[phone].

ARCHITECTURAL ACOUSTICS

Features and specifications subject to change without notice.

A Division of Peavey Electronics Corporation

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711 A Street / Meridian, MS 39301 / U.S.A. / [phone] / Fax [phone]

©1996 #8000383 Printed in U.S.A. 6/96