RPQ160b
Parametric Equilizer
LOW SHELF
50 100
HIGH SHELF
LEVEL
0
FREQ
800
FREQ
2.1k
FREQ
400
LEVEL
0
LEVEL
0
WIDTH
WIDTH
4
6
200
100
600
900
300
166
1.1k
1.8k
800
400
3.3k
7k
200
30
20
2
10
1.5
400
500
MADE IN USA
CLIP
16
1
30
KHZ
-12
+12
70
1.5k
-15
+15
150
3k
-15 +15
dB
300
10k
3
.3
OCT
3
.3
OCT
HZ
HZ
dB
dB
HZ
HZ
ACTIVE
EVEL
0
FREQ
800
LEVEL
0
FREQ
2.1k
LEVEL
0
FREQ
4k
LEVEL
0
WIDTH
WIDTH
WIDTH
300
166
1.1k
800
400
3.3k
7k
2k
6k
12k
PARAMETRIC
EQUALIZER
1.8k
900
RPQ160b
+15
150
3k
-15
+15
300
10k
-15
+15
600
20k
-15
+15
3
.3
OCT
3
.3
OCT
3
.3
OCT
dB
HZ
dB
HZ
dB
HZ
dB
POWER
Rolls Corporation
Salt Lake City, UT
06/09
QUICK START OPERATION GUIDE
Download from Www.Somanuals.com. All Manuals Search And Download.
DESCRIPTION
DESCRIPTION
REAR PANEL
FRONT PANEL
LOW SHELF
50 100
HIGH SHELF
LEVEL
0
FREQ
800
FREQ
2.1k
FREQ
400
LEVEL
0
LEVEL
0
WIDTH
WIDTH
4
6
200
100
600
900
300
166
1.1k
800
400
200
30
20
2
10
WARNING DO NOT EXPOSE THIS
EQUIPMENT TO RAAIN OR MOISTURE.
TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE BACK.
NO USER SERVICAABLE PPARTS
INSIDE. REFER SERVVICING TO
QUALIFIED SERVICEE PERSOONNEL.
SERIAL NUMBER
1.8k
1.5
400
500
MADE IN USA
MADE IN USA
CLIP
ROLLS
16
1
30
KHZ
-12
+12
70
1.5k
-15
+15
150
3k
-15 +15
dB
300
HZ
3
.3
OCT
3
.3
OCT
HZ
dB
dB
HZ
HZ
ACTIVE
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
+
-
BALLANCED
RISQUE DE CHOC - NE PAS ENLEVER
PS12
L
FREQ
800
LEVEL
0
FREQ
2.1k
LEVEL
0
FREQ
4k
LEVEL
0
WIDTH
WIDTH
WIDTH
300
166
1.1k
1.8k
800
400
3.3k
7k
2k
900
6k
PARAMETRIC
EQUALIZER
12k
RPQ160b
OUTPUTS
INPUTS
+15
150
3k
-15
+15
300
10k
-15
+15
600
20k
-15
+15
dB
3
.3
OCT
3
.3
OCT
3
.3
OCT
HZ
dB
HZ
dB
HZ
POWER
BALLANCED 1/4”
BALLANCED 1/4”
LOW SHELF: High Pass Filter control; adjusts the amount of low frequency rolloff
from 500 Hz down to 16Hz for the entire output of the RPQ160.
HIGH SHELF: Low Pass Filter control; adjusts the amount of high frequency rolloff
from 1 kHz up to 20 kHz for the entire output of the RPQ160.
NOTE: THERE IS NO BYPASS SWITCH FOR THE LOW OR HIGH SHELF
FILTERS - SIMPLY TURN THE LOW SHELF COMPLETELY COUNTERCLOCK-
WISE, AND THE HIGH SHELF COMPLETELY CLOCKWISE TO BYPASS THESE
CIRCUITS.
OUTPUT: Balanced XLR and balanced 1/4” and RCA jacks for connection to a
mixing board, power amplifier or recording device.
INPUT: Balanced XLR and balanced 1/4” and RCA jacks for connection to the
output of a mixing board, instrument, or other device with the signal to be pro-
cessed.
LEVEL: Adjusts the overall signal level of the RPQ160.
NOTE:The following three descriptions are identical for all four bands of equaliza-
tion.
FREQUENCY: Selects the frequency to be boost or cut. The band frequency
ranges are listed below:
CONNECTION
Band 1:
Band 2:
Band 3:
Band 4:
70 Hz to 1.5 kHz
150 Hz to 3 kHz
300 Hz to 10 kHz
600 Hz to 20 kHz
Turn off all equipment before making any connections. Mount the RPQ160 in a
properly grounded rack, and make sure the rack is properly ventilated. Ambient
temperatures should not exceed 113 degrees F (45 degrees C) when the equip-
ment is in use. Connect your RPQ160 using XLR, RCA or 1/4” connectors.
Connect the AC power cord to a properly grounded AC outlet. Route the AC
power cord away from audio lines.
WIDTH: (Q):Varies the shape or width of the equalization being boost or cut from
.3 to 3 octaves wide.
LEVEL: Boosts or cuts the signal of the indicated band from -15 to +15 dB.
Power Switch: Applies power to the RPQ160 when the unit is connected to a
properly grounded ac outlet.The Power LED will light when the RPQ160 is on.
Download from Www.Somanuals.com. All Manuals Search And Download.
OPERATION
OPERATION Cont.
Shown below is the typical symmetrical response curve of a swept parametric
band filter with the Frequency control set at 1 kHz, the Level set at +15 and -15
dB, and the Octave control set at .3, .5, 1, and 3.These curves remain consistent
over the frequency spectrum, they simply shift to whatever frequency setting is
indicated by the Frequency control.
The two shelving filters are designed to roll off the frequency response of the
Signal; the Low Shelf cuts the frequencies 3 dB at the control’s indicated setting
and rolls off below, and the High Shelf cuts the frequencies 3 dB at the indicated
setting and rolls of above.The Low Shelf Sweep Diagram shows the response
curve of the Low Self filter at its minimum and maximum setting.
The shape is most narrow when the OCT control is set at .3, and is widest at the
3 setting.
O dB
Set at 16Hz
20
15
10
5
Set at 500 Hz
20 40 80 160 320 640 12k 16k 20k
Frequency (Hz)
LOW SHELF SWEEP DIAGRAM
- 5
-10
-15
-20
The High Shelf Sweep Diagram shows the response curve of the High Self filter at
its minimum and maximum setting.
O dB
Set at 30 kHz
100 200
Frequency (Hz)
600 1k 2k
6k 10k 20k
50
Set at 1 kHz
20 40 80 160 320 640 12k 20k 40k
Frequency (Hz)
APPLICATIONS
HIGH SHELF SWEEP DIAGRAM
The RPQ160’s precise equalization has many applications including school or
church gymnasiums, home or professional recording studios, live sound, or
musical instruments.
Please note that when the Low Shelf is set fully counterclockwise (16 Hz), the
filter is essentially bypassed. Similarly, when the High Self control is set fully
clockwise (30 kHz), that filter is essentially bypassed.
When coupled with a spectrum analyzer, the RPQ160 can match exactly the
properties of typical acoustic resonances and reflections, and make immediate
improvements to any installed system’s amplitude and phase response.
The Level control has a detente at the center (0 dB) position. if the Clip LED is
lighting, the Level control may be turned counterclockwise to reduce the gain of
the RPQ160, thereby reducing the clipping. If a weak signal is present, the Level
control may be turned up (clockwise) to increase the gain. To achieve the
maximum signal to noise ratio, the Level should be set 3 dB below the clipping
level.This is done by adjusting the Level control with a normal signal present until
the Clip LED lights, then turning the Level down to just below the point when the
LED goes out.
Live applications include equalizing trouble spots where a mix may be muddy, too
harsh, flat, and even eliminate feedback precisely without affecting the flavor of
the overall sound.
Recording studios benefit from the RPQ160’s precise equalization in notching out
trouble frequencies that need to beremoved, or by re-equalizing a final mix.
Download from Www.Somanuals.com. All Manuals Search And Download.
|