Ashly PQX-571 User Manual

PQX-571 / PQX-572 Parametric Equalizers

ARCHITECTS SPECIFICATIONS

TECHNICAL NOTES & SPECIFICATIONS

PQX-571

The unit _ shall be a single channel
ble of being center-frequency-tunal

equalizer

z to
The unit shall have a single channel of 5 bands of equaliza
tion. Each band shall have a bandwidth adjustable between 3
1/3 octave and 1/20 octave. The frequency response shall be
20Hz-20KHz, +/-0.2dB. The distortion shall not exceed .03%
THD at +4dBu, 20Hz-20KHz. Hum and noise shall be below

-90dBu with the EQengaged and -10_8dBu with the EQout.
The unit shall offer a per band amplitude adjustment ^f +/­15dB as well as_ a master ’ "
unit shall also include
shelving covering the range
16KHz respectively. The range of shelving frequency shall be
+/-15dB. _ The input impedance shall be 20K ohm active bal
anced bridging, and the output _ impedance shall be 200 ohm,
quasi-balanced. The maximum in/out level shall be +22dBu
or^ydBu at maximum _ boost,^ 1/3 octave or greater.

The unit shall be designed for mounting

rack (19”L x 1.75”H x 6”D) and shall b

in a standard EIA

ave a

ht of 8lbs. The unit shall operate from 94VAC

^ 50-60Hz. The unit shall be a model PQX-571 single
channel Parametric Equalizer manufactured by Ashly Audio
Inc. No other unit shall be acceptable unless data submitted
from an independent test laboratory verifies that the above
combined size/performance specs are met.

capa-

Sh,pgng

25

PQX-572

The unit _ shall be a dual channel parametric equalizer, capa
ble of being center-frequency-tunable from 20Hz to 20KHz.
The unit shall have two channels of 5 bands of equalization.
Each band shall have a bandwidth adjustable between 3 1/3
octave and 1/20 octave. The frequency response shall be
20Hz-20KHz, +/-0.2dB. The distortion shall not exceed .03%
THD at +4dBu, 20Hz-20KHz. Hum and noise shall be below

-90dBu with the EQengaged and -10_8dBu with the EQout.
The unit shall offer a per band amplitude adjustment of +/-

shelving covering the range
16KHz respectively. The range of shelving frequency shall be
+/-15dB. _ The input impedance shall be 20K ohm active bal
anced bridging, and the output impedance shall be 200 ohm,
quasi-balanced. The maximum in/out level shall be +22dBu
or +7dBu at maximum _ boost, 1/3 octave or greater.

The unit shall be designed for mounting in a standard EIA
19” rack (19”L x 3.5”H x 6”D) and shall have a shipping
weight of 10lbs. The unit shall operate from 94VAC - 1z5

VaC, 50-60Hz. The unit shall be a model PQX-572 dual
channel Parametric Equalizer manufactured by Ashly Audio
Inc. No other unit shall be acceptable unless data submitted

from an independent test laboratory verifies that the above

combined size/performance specs are met.

Features:

• 5 Fully Parametric Bands

• Parametric Filters Tunable from
20Hz - 20KHz

• Tunable Low and High Frequency
Shelving Filters

• 5 Year Worry-Free Warranty

• Very Low Hum and Noise Design

• Adjustable Bandwidth from 3 1/3 to

1/20 of an Octave

• True Reciprocal Curves

• Master and Individual Band In/Out
Bypass Switching

• XLR, 1/4”, and Barrier Strip Inputs

General Specifications PQX-Series:

INPUT
Type:
Impedance:
Max. Level:

OUTPUT

e:

Typ
Min. Load Impedance:
Max. Level:

POX-571 POX-572
Active Balanced Active Balanced
20k ohm (10K ohm unbalanced) 20k ohm (10K ohm unbalanced)
+23dBu (+7dBu at max boost, 1/3 octave or greater) +23dBu (+7dBu at max boost, 1/3 octave or greater)

Balanced Balanced
200 ohm (terminate with 600 ohm or greater) 200 ohm (terminate with 600 ohm or greater)
+22dBu +22dBu

Frequency Response:
THD (20Hz-20kHz):
Output Noise
(20Hz-20kHz):

FILTERS
Parametric Type:
Number:
Bandwidth:
Amplitude
Range:
Shelving Type
Low Range
High Range
Shelving Range

Power Requirements:
Shipping Weight:
Dimensions:
I/O Connectors:

CONTROLS
Master Gain
Master Defeat Switch
Per Band Amplitude
Per Band Defeat Switch

Rear Panel PQX-571

±.2dB 20Hz-20kHz ±.2dB 20Hz-20kHz
<.03% @ +4dBu, 20 Hz-20KHz <.03% @ +4dBu, 20 Hz-20KHz

-93dBu (EO in, Peaking Filters in)

-90dBu (EQ, Peaking Filters and Shelving Filters in)

State Variable with separate summing amplifiers State Variable with separate summing amplifiers
1 x 5 2 x 5
3 1/3 Octave to 1/20 Octave 3 1/3 Octave to 1/20 Octave
+/- 15dB +/- 15dB
20Hz-20KHz 20Hz-20KHz
Low, High Low, High
40-400Hz 40-400Hz

1.6KHz-16KHz 1.6KHz-16KHz
+/-15dB +/-15dB

120VAC, 50-60Hz, 9W 120VAC, 50-60Hz, 15W
8 lbs 10 lbs
19”L x 1.75”H x 6”D 19”L x3.5”H x 6”D
XLR, 1/4”, and Barrier Strip XLR, 1/4”, and Barrier Strip

+/- 15dB +/- 15dB
Yes Yes
+/- 15dB +/- 15dB
Yes Yes

-93dBu (EO in, Peaking Filters in)

-90dBu (EO, Peaking Filters and Shelving Filters in)

Rear Panel PQX-572

Applications:

Churches, Studios, Concerts, Dance/Night Clubs, PA Systems, Auditoriums, Lecture Halls, Sports Stadiums, Outdoor Festivals

Ashly manufactures a complete and comprehensive line of Graphic and Parametric Equalizers,

Electronic Crossovers, Power Amplifiers, Compressor-Limiters, Mixers, and

Amplifier Input Options. Please call, write or visit our web site for information on any of these Ashly Products.

Ashly Audio Inc., 847 Holt Road, Webster, NY 14580-9103, Toll Free [phone], Telephone [phone], FAX [phone]

Internet: http://www.ashly.com, email: [e-mail]