ashly logo PQX-Series Parametric Equalizers
PQX-571/572

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Front Panel
Front Panel

General Specifications

CONTROLS
Master Gain: +/-15dB
Master Defeat Switch: Yes
Per Band Amplitude: +/-15dB
Per Band Defeat Switch: Yes PARAMETRIC FREQUENCIES (5 BANDS)
Range Switch Out: 200Hz-20kHz
Range Switch In: 20Hz-2kHz
Bandwidth: .05-3.3 Octaves

SHELVING FREQUENCIES (2 BANDS)
Low: 40Hz-400Hz
High: 1.6kHz-16kHz

INPUT IMPEDANCE
20k Ohms, Active Balanced

OUTPUT IMPEDANCE
200 Ohms, Terminate with >600 Ohms

MAX INPUT LEVEL
+22 dBu (+7 dBu at max boost, 1/3 octave or narrower)

FREQUENCY RESPONSE
+/-.2dB 20Hz-20kHz

TOTAL HARMONIC DISTORTION
<.03%, +4dBu, 20Hz-20kHz

HUM AND NOISE
-90dBu (eq. in), -109dBu (eq. out)

POWER REQUIREMENTS
120VAC, 50-60Hz, 9W(PQX571), 15W(PQX572)

SIZE
PQX572: 19"W x 3.5"H x 6"D
PQX571: 19"W x 1.75"H x 6"D

SHIPPING WEIGHT
PQX572: 10lb.
PQX571: 8lb.











 Architect Specifications

PQX-571
The unit shall be a single channel parametric equalizer, capable of being center-frequency-tunable from 20Hz to 20KHz. The unit shall have a single channel 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 EQ engaged and -108dBu with the EQ out.

The unit shall offer a per band amplitude adjustment of +/- 15dB as well as a master gain adjustment of +/-15dB. The unit shall also include low frequency and high frequency shelving covering the range of 40-400Hz and 1.6KHz to 16KHz respectively. The range of shelving frequency shall be +/-15dB. The input impedance shall be 20K ohm active balanced 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 1.75.H x 6.D) and shall have a shipping weight of 8lbs. The unit shall operate from 94VAC - 125 VAC, 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.

PQX-572
The unit shall be a dual channel parametric equalizer, capable 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 EQ engaged and -108dBu with the EQ out.

The unit shall offer a per band amplitude adjustment of +/- 15dB as well as a master gain adjustment of +/-15dB. The unit shall also include low frequency and high frequency shelving covering the range of 40-400Hz and 1.6KHz to 16KHz respectively. The range of shelving frequency shall be +/-15dB. The input impedance shall be 20K ohm active balanced 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 - 125 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.

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