Meyer Sound CP-10 User Manual

Features

Complementary phase
Symmetrical boost/cut

Calibrated controls

Automatic bypass switch-

ing

Gold-socketed p.c. boards

Ease of service

Long-term reliability

Applications

Sound system equalization

Recording studio tuning

Resonance elimination

Early echo suppression

Outboard recording EQ

The Meyer Sound CP-10 Comple­mentary Phase Parametric Equalizer is
a two-channel unit, each channel
comprising five bands of fully paramet­ric equalization and individual high­and low-cut shelving filters.

The CP-10 is designed for precision
room equalization in sound reinforce­ment or studio monitoring, and
features Meyer Sound’s exclusive
Complementary Phase circuitry.
Capable of matching exactly the
properties of typical acoustic reso­nances and reflections, this unique
circuitry makes possible simultaneous
improvements to an installed system’s
amplitude and phase response.

The CP-10 equalizer is an integral
component of Meyer Sound’s propri­etary SIM® (Source Independent
Measurement) system. Coupling high­resolution, in-concert, multiple-point
measurement with Complementary
Phase equalization, this revolutionary
technology assures unprecedented
sound system performance — even in

the most difficult acoustical environ­ments. (For more information on SIM,
contact Meyer Sound.)

The CP-10 also serves as a very
effective, high-quality outboard equal­izer for music recording. Its graceful,
symmetrical parametric filters and
natural phase characteristics ensure
maximum flexibility with minimum
sonic perturbation. Coupled with very
low harmonic distortion and a 110 dB
dynamic range, these attributes place
the CP-10 in a class with the finest
outboard equalizers available.

With specifications to meet the most
demanding professional requirements,
the Meyer Sound CP-10 offers uncom­promised performance in recording and
reinforcement applications. Individually
socketed, field-replaceable circuit cards
and automatic bypass switching ensure
maximum reliability with extended use.

CP-10

Complementary Phase
Parametric Equalizer

Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
[phone]
FAX [phone]

CP-10 Specifications

Frequency Response
Total Harmonic Distortion
Hum and Noise -90 dBV “A” weighted, unbalanced
Dynamic Range
Inputs

Type Balanced active
Impedance 20k ohms balanced

4

Level

Outputs

Type Balanced active push-pull
Impedance 300 ohms, 150 ohms per branch unbalanced
Level +4 dBu nominal, +26 dBu maximum

Controls

Front Panel EQ In/Out, Center Frequency, Bandwidth,

Rear Panel Ground Lift switch, Gain switch,

Indicators

Power Green LED
Ready Green LED

Clip (Input and Output) Red LEDs
Connectors 3-pin XLR male (outputs) and female (inputs)
Power 120/240V AC, 50/60 Hz, rear-panel switchable
Physical

Dimensions 19" W x 3 1/2" H x 7 1/2" D standard rack mount

Weight 13 lbs (5.9 kg)

1

2

3

20 Hz – 20 kHz ±0.5 dB
< 0.01%

110 dB

+4 dBu nominal, +20 dBu maximum

Boost/Cut, Lo and Hi Shelving Cut

AC Voltage switch

Notes:

1. All equalization circuits
out.

2. 1 kHz input at +4 dBu

3. “A” weighted noise floor
to maximum RMS output

4. Within the operating band
of each channel, maxi­mum input level is the
minimum worst-case
level achieved before
clipping.

The clearly marked front panel includes
individual in/out switches for each equal­ization band, with separate, calibrated
frequency, bandwidth and boost/cut
controls. LEDs indicate power status and
signal clipping.

Signal flow through the device is
controlled by a delayed relay which allows
the CP-10 circuitry to stabilize before it is
engaged. When power to the CP-10 is

interrupted, input signals are bypassed
directly to the corresponding outputs.

The front panel may be removed without
affecting control settings, and each
equalization stage resides on a separate,
gold-socketed circuit card for ease of
service. An optional smoked plastic security
cover discourages tampering in fixed
installations.

Individual In/Out switches for
each frequency band

Center frequency selection
(10:1 range)
Bandwidth control (0.1 octave
to 1.1 octaves, continuously
variable)
Boost or cut (± 15 dB)
High and low shelving cut filter
controls
LEDs indicate power status and

A ground lift switch floats audio
common (XLR connector pin 1) from
the chassis. (Earth and chassis are
always connected for safety.)

A gain switch adjusts for unity gain
with either balanced or unbalanced
input signal connections. (Outputs
remain balanced at all times.)