Rolls EQ101 User Manual
VDC
12 - 17
-
+
PWR
16K
8K
EQ101
EQ
OUT
10-BAND
EQ101
PRECISION EQUALIZER
LIMITED WARRANTY
This product is warranted to the original consumer purchaser to be
free from defects in materials and workmanship under normal installation, use
and service for a period of one (1) year from the date of purchase as shown on
the purchaser’s receipt.
The obligation of Rolls Corporation under this warranty shall be
limited to repair or replacement (at our option), during the warranty period of
any part which proves defective in material or workmanship under normal
installation, use and service, provided the product is returned to Rolls
Corporation, TRANSPORTATION CHARGES PREPAID. Products returned to
us or to an authorized Service Center must be accompanied by a copy of the
purchase receipt. In the absence of such purchase receipt, the warranty period
shall be one (1) year from the date of manufacture.
This warranty shall be invalid if the product is damaged as a result
of defacement, misuse, abuse, neglect, accident, destruction or alteration of
the serial number, improper electrical voltages or currents, repair, alteration or
maintenance by any person or party other than our own service facility or an
authorized Service Center, or any use violative of instructions furnished by us.
This one-year warranty is in lieu of all expressed warranties,
obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS,
OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE
YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY. Some
states do not allow limitations on how long an implied warranty lasts, so the
above limitation may not apply to you.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS
OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special,
incidental or consequential damages so the above limitation or exclusion may
not apply to you. This warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.
IN OUT IN
500 1K 2K 4K
250
BYPASS
OWNERS MANUAL
+12
32 64 125
0
LVL
-12
EQ101 10-BAND EQ
• Compact Mono Equalization
• Clean, quiet operation
• Hard-wired bypass
and
• 1/4"
The EQ101 is for any application needing
simple mono equalization.
SPECIFICATIONS
Input Impedance: 50 K Ω Nominal
Output Impedance: 100 Ω
Max Input Level: +24 dBV
Max Output Level: +14 dB
Center Freq: +/-5% Standard ISO
Boost/Cut Range: +/- 12 dB
Bypass: Hard-wired
Frequency Response: 20 - 20 kHz +/- 1 dBV
Dynamic Range: 95 dB A Weighted
S/N Ratio: 85 dB
Power: +12 VDC 150 mA (center neg.)
Dimensions: 4 x 4.5 x 1.125 inches (WxHxD)
Weight: 1 lb.
RCA Inputs and Outputs
Adapter provided in the U.S.A.
Rolls Corporation
Salt Lake City, UT
4/99
Thank you for your purchase of the EQ101 10-Band Graphic Equalizer.
This unit is designed and manufactured to provide years of quality
service. Please read this manual carefully for proper operation and care.
INSPECTION
1. Unpack and Inspect the EQ101 package
Be sure to examine the unit and the carton for any signs of damage that
may have occurred during shipping. If obvious physical damage is
noticed, contact the carrier immediately to make a damage claim. We
suggest saving the shipping carton and packing materials for safel y
transporting the unit in the future.
2. Please complete the Warranty Registration Card and return it to the
factory.
DESCRIPTION
REAR PANEL
IN: 1/4" TS unbalanced and RCA jacks for connection to input signal.
This could be an instrument or the output of a signal processor.
OUT: 1/4" TS unbalanced and RCA jacks for connection to an amplifier,
or mixer.
OPERATION
Shown below is an example of connection and operation of the EQ101.
Signal processor or preamplifier
To amplifier
or mixer
Graphic equalizers boost the
indicated frequency. Low
frequencies are equivalent to
bass sounds and high frequencies equal treble sounds.
IN OUT IN
+12
0
-12
32 64 125
LVL
BYPASS
OUT
500 1K 2K 4K
250
12 - 17
VDC
+
EQ
-
PWR
EQ101
8K
16K
LVL: This control adjusts the overall level of the equalize r. Note that the
center position is detented for easy location of unity gain.
32 through 16K: These controls boost or cut the indicated frequency.
When the slider is in the center (detented) position, the frequency is not
effected.
BYPASS/EQ SWITCH: Selects whether the input signal is sent through
the equalization circuitry (EQ) or is sent directly to the outputs (BYPASS). Note that the EQ101 has a "hard-wire" bypass meaning that if
there is no power connected to the unit, signal will still be present at the
outputs.
PWR: This LED indicates that power is applied to the EQ101.
12 - 17 VDC: For connection to the AC adapter. Please use either the
ROLLS PS27, or a proper adapter with 12 - 17 VDC, 150 mA, outside of
barrel positive.
IN OUT IN
+12
0
-12
32 64 125
LVL
BYPASS
OUT
500 1K 2K 4K
250
12 - 17
VDC
+
EQ
-
PWR
EQ101
8K
16K
SCHEMATIC
J3
RCA JACK
J1
PHON E 1/4
SW 1A
2
DPDT
J2
PHON E 1/4
SW 1B
5
DPDT
J5
RCA JACK
C23
503
IN 9 - 1 5 V A C /V D C
J4
2
3
1
JAP DC
4
6
D1
1N400X
C25
10U
1
3
C1
1000 UF
VCC
W 100K CC
BIAS
C24
P2
P100K SS
C8
27PF
R25
R22
P1
18K
4.7K
4560
R23
2
4.7K
1U
U1A
3
R2418K
4
27PF
C30
R26
10K
8
VCC
4560
6
7
U1B
5
BIAS
R19
18K
R27
R28
4.7K
C26
22K
47U
D2
LDS G
C2
3.3U F
P3
P100K SS
C4
1.5U F
P4
P100K SS
1
C6
R29
1UF
P5
10K
P100K SS
C10
.47
P6
P100K SS
C12
.27
P7
P100K SS
C14
.12
P8
P100K SS
C16
.0 6 8
P9
P100K SS
.0 3 3
C18
P10
P100K SS
C20
.0 1 5
P11
P100K SS
C22
.0 0 8 2
VCC
1K
4560
6
C1
.0 6 8
BIAS
R5
1K
C5
.0 1 5
BIAS
R9
1K
C11
.0 0 3 9
BIAS
R13
1K
C15
820PF
BIAS
R17
1K
C19
270PF
BIAS
7
U2B
5
R2
R3
100K
8
VCC
4560
6
U3B
5
R6
100K
8
VCC
4560
6
U4B
5
R10
100K
8
VCC
4560
6
U5B
5
R14
100K
8
VCC
4560
6
U6B
5
R18
100K
R20
1K
C21
120PF
BIAS
4560
1K
2
C3
.0 3 9
BIAS
7
R7
1K
C7
.0 0 8 2
BIAS
7
R11
1K
C13
.0 0 2 2
BIAS
7
R15
1K
C17
470
BIAS
7
2
U6A
3
R21
100K
4
1
U2A
3
R4
100K
4
4560
2
1
U3A
3
R8
100K
4
4560
2
1
U4A
3
R12
100K
4
4560
2
1
U5A
3
R16
100K
4
4560
ROLLS CORPORATION
1
5143 South Main Street
Salt Lake City, UT 84107
10 BAND PRECISION EQ EQ101
Document Number:
Size
Ba
Date: Sheet of
EQ101.SCH
Rev.
A
12-Apr-1999
1
8
R1
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