Ashly PQ-16 User Manual

PQ-16

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PQ-26

he Ashly PQ-16 and PQ-

26 Parametric Equalizers

offer complete equaliza
tion flexibility. Compared
to graphic equalizers that

T

trol that can tune over a 5.5 octave

range, with variable bandwidth from

3.3 to 1/20 octave.
Some applications include: shaping

the overall response of a sound sys

tem to improve response, feedback

control, instrument tone control,
speaker or room resonance prob
lems, vocal and dialogue equaliza
tion, broadcast announcer voice
enhancement, special effects, or any
application where complete equaliza
tion control is necessary.

At the heart of the Ashly PQ-Series

is our unique bandpass filter circuit.
Basically a "state variable" type, this
filter is trimmed and optimized to pro
vide excellent transient response and
a wide range bandwidth adjustment.

preset center frequencies
and bandwidth, the Ashly
PQ-Series provides con

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Parametric Equalizers

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Each filter can be tuned over a 50:1
frequency range (about 5.5 octaves)
and a 70:1 bandwidth range with no
more than a 2dB amplitude error at
center frequency. At its sharpest set
ting, the filter has a "Q" of about 35
and generates a response curve with
3dB points only 1/20 octave apart,
making feedback control possible
with no audible side effects.

Tunable low and high frequency
shelving filters are also provided to
trim frequency extremes. Each filter is
placed in the feedback loop of a sum
ming amplifier to produce the desired
frequency response. Since a sepa
rate summing amplifier is used for
each band, no interaction between
bands occurs. A hefty output stage is
provided so that low impedance loads
and long cable runs may be driven
with optimal results.

The single channel PQ-16 and the
stereo PQ-26 (also usable as 12­band mono) Parametric Equalizers
are covered by Ashly's exclusive five­year worry-free warranty.

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model PQ-26

Five-Year Worry-

Free Warranty

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Tunable Low and

High Frequency

Shelving Filters

Center Frequency

Tunable over a 5.6

Octave Range

Adjustable Bandwidth

from 3 1/3 to 1/20

of an Octave

Full 20dB Headroom

True Reciprocal Curves

Optional 12-Band Mono

Operation on PQ-26

Master and Individual

Band In/Out

Bypass Switching

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specifications

CONTROLS

Master Gain;

Master Defeat Switch: YES

Per Band Ampiitude: ±15dB

Per Band Defeat Switch:

PEAKING FREQUENCY

Low:

Low Mid: 50Hz-2.4kHz

Hi Mid;

High:

Bandwidth:

SHELViNG FREQUENCY

Low;

High:

Sheiving Range:

Input Impedance; lOkQ active balanced bridging

Output Impedance:

Maximum Input Level:

Frequency Response; 20Hz-20kHz, ±.5dB

Distortion: <.05%THD, +10dBV 20Hz 20kHz

Hum and Noise:

±15dB

YES

16HZ-800HZ

160Hz-8kHz
500Hz-24kHz
3 1/3 -1/20 octave

30-300HZ
700Hz-8kHz
±15dB

200Q, term. W/600Q or more

+20dBm{+5dBm at max boost,
full sharp)

-87dBV(EQ in), -95dBV(EQ out)

Architect’s Specification

Ashly PQ-26

The untt shall be a du&l channel parametric equalizer,
capable of being center-frcquency-tunablc over a 5,S
octave range. The unit «hall have two channels of 4
bands of equalization adjustable as follows: Low: iGHz'
800He, Low Mid: 50Hz-2,4kHz, High Mid: l60Hz-SkHz,
and High: SOOHz-24kHz, Each band shall have a band'
width adjustable between 8 1/3 octave and t/20
octave. The frequency response shall be 20Hz-2QkHz,
tO.SdB. The distortion shall not eiceed <0,05% THD,
tlOdBV, 20Hz-2OkHz. Hum and noise shall be below ­S7dBV with Che EQ engaged and ’95dBV with (he EQ
out. The unit shall offer a per band amplitude adjust

ment of ±l5dB as well as a master gain adjustment of
tl5 dB. The unit shall also Include Low frequency and
high frequency shelving covering the range of 30-30QHz

and 700Hz to 6kHz respectively, The range of the shelv
ing equalization shall be ±l5dB. The Input Impedance of

Che unit shall be 10ki2 active balanced bridging, and the

output impedance shall be 200Ü, terminated with 60Û11
or more. The maximum in/out level shall be f20dBm or

■t‘5dBm at maximum boost, full sharp, The unit shall be
designed for mounting In a standard EÏA 19'' rack (t9' L
X 3.5"H z 6"D) and shall have a shipping weight of

LOlbs , The unit shali operate at 115VAC t5%> 50'6CHz.
The unit shall be a P9‘26 Parametric Equalizer manu
factured by Ashly Audio Inc, No other unit shall be
acceptable unless data submitted from an independent
test laboratory verities that the above combined
size/performance specs are met.

Ashly PQ-16

Power Requirements:

Shipping Weight:

AshEy Audio Inc.

Size:

110-125VAC, 50-60HZ, 5W

PQ-26: 19"Lx 3.5"H x6”D
PQ-16: 19"Lx1.75"Hx6"D
PQ-26:10 lbs
PQ-16: 8 lbs

The unit shall be a single channel parametric equalizer,
capable of being center-frequency'tunable over a 5.5
octave range. The unit shall have a single channel of 4
bands of equalization adjustable as follows: Low: l6Hz­800Hz, Low Mid: 50Hz 2.4kHz, High Mid: 160Hz-8kHz,

and High: 500Hz-24kHz, Each band shall have a band
width adjustable between 3 1/3 octave and 1/20

octave. The frequency response shall be 20Hz-20kHz,
±0.5dB. The distortion shall not exceed <0.05% THD,

-rlOdBV, 20Hz-20kHz, Hum and noise shall be below ­87dBV with the EQ engaged and -95dBV with the EQ
out. The unit shall offer a per band amplitude adjust

ment of il5dB as well as a master gain adjustment of
±15 dB. The unit shall also include low frequency and
high frequency shelving covering the range of 30-300Hz
and 700Hz to 8kHz respectively. The range of the shelv
ing equalization shall be il5d6. The Input Impedance of
the unit shall be lOkii active balanced bridging, and the
output Impedance shall be 200il. terminated with 600ti
or more. The maximum in/out level shall be +20dBm or
+5dBm at maximum boost, full sharp. The unit shall he
designed for mounting in a standard Б1А 19'' rack (19"L
X 1,75"H
Slbs. The unit shall operate at 115VAC ±5%, 50-60Hz.
The unit shall be a model РЗ'^в Parametric Equalizer
manufactured by Ashly Audio Inc. No other unit shall be
acceptable unless data submitted from an independent
test laboratory verities that the above combined
size/performance specs are met.

к 6”D) and shali have a shipping weight of

ASHI-Y

Since 1972

© ]9a0 Ashly Audio