CARVIN EQ2015 Operating Manual

CARVIN ENGINEERING DATA
The EQ2015 & EQ2030 are professional 2/3 and 1/3 octave graphic
equalizers suitable for recording, sound reinforcement, guitar and bass
rigs, or home audio applications. Both units feature pro sound per-
formance from extended frequency response, wide dynamic range, and
low noise operation. Both offer large precision sliders with "sure-grip"
rubber boots, 15db of boost and cut per frequency, low interaction
between frequencies, and dual Sweepable High and Low cut filters. The
EQ2015 & EQ2030 are built to rugged specs for high reliability under
continuous use providing years of professional service.
INTERFACE & OPERATION
The EQ2015 & EQ2030 can be inserted into the audio signal path at any con-
venient point where there is a nominal "line level" signal. Never connect the speaker
output of an amplifier to the EQ2015 or EQ2030 as damage to both units may
occur. Balanced low impedance XLR w/ground lift and balanced/unbalanced 1/4"
connections are provided allowing the EQ2015 & EQ2030 to be interfaced with
professional audio equipment (with the proper cables). See Fig. 1.
RECORDING STUDIO APPLICATIONS
The EQ2015 & EQ2030 have many uses in the studio environment. They
can be used to balance and "flatten" the control room monitors, eliminate feed-
back in the studio mains, or to EQ individual recorded channels.

SOUND REINFORCEMENT

The EQ2015 & EQ2030 are the ideal tools for solving many live sound rein-
forcement problems. The most obvious use would be for eliminating feed-
back and fine tuning the main house speakers or the stage monitor speakers.
Typically the EQ2030, with its fine 1/3 octave adjustments would be used for
the monitors, although the EQ2015 could be used in situations where tone con-
trol, not feedback elimination, was the main objective. Both units are excel-
lent for optimizing the house PA system. Typically the EQ2015 is sufficient
for the PA mains, although in rooms with major EQ problems, the extra fine
tuning abilities of the EQ2030 may be necessary.
GUITAR & BASS AMPS
Guitar and bass players can benefit from the EQ2015 & EQ2030 by integrating
them into their rigs between the pre-amp and power amp interrupt jack for
extra tone control. Utilizing A/B boxes, the EQ's can be used like extra chan-
nels for unlimited tonal flexibility.
For your records, you may wish to record the following information.
Serial No._____________________ Invoice Date_______________
76-20300 197
EQ2015 DUAL 2/3 OCTAVE EQUALIZER
EQ2030 DUAL 1/3 OCTAVE EQUALIZER
RECEIVING INSPECTION—read before getting started
INSPECT YOUR UNIT FOR ANY DAMAGE which may have occurred during shipping. If any
damage is found, please notify the shipping company and CARVIN immediately.
SAVE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship your unit,
always use the original carton and packing material. This will provide the best possible protec-
tion during shipment. CARVIN and the shipping company are not liable for any damage caused
by improper packing.
EQ2015
SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.
SHIPMENT SHORTAGE. If you find items missing, they may have been shipped separately.
Please allow several days for the rest of your order to arrive before inquiring.
RECORD THE SERIAL NUMBER on the enclosed warranty card or below on this manual
for your records. Keep your portion of the card and return the portion with your name and
comments to us.

HOME AUDIO

The EQ2015 & EQ2030 are excellent equalizers for home audio use. Their high-
end professional features and specs allow them to integrate easily into top qual-
EQ2030
ity home set-ups. The units can be connected to an open tape monitor loop on
an integrated pre-amp/amplifier or between the pre-amp and power amp in sys-
tems with separate components providing the ultimate control in your favorite lis-
tening room.

MICRO TOROID SUPPLY

Pure DC is generated from the built-in Micro Toroid power supply which features
precision 7815 and 7915 voltage regulators. Now you can go anywhere and never
have to worry about the EQ2015 & EQ2030 giving you their exact specifications
because voltage tolerances are held to within .001%.. The big feature in this power
supply is the precision wound Toroid transformer that gives unsurpassed rejection
of noise and hum. You can place the EQ2015 & EQ2030 over sensitive gear and
not be concerned about injecting hum or noise from a standard transformer. CARVIN
has spared no expense to achieve studio quality performance.
MODEL EQ2015 SPECS:
Input Type:
Input Impedance:
Maximum Input Level:
Output Type:
Output Impedance:
Maximum Output Level:
Unbalanced:
Balanced:
Input Gain Control:
Boost Cut:
Center Frequencies:
Filter Type:
Frequency Accuracy:
Frequency Response
(with all sliders centered): ±1 dB, 10 Hz to 45 kHz
Bandwidth (-3 dB points): 7 Hz -85 kHz
Harmonic Distortion:
Noise (unweighted,
20 kHz bandwidth):
Slew Rate:
Power Requirements
US Model:
Export Model:
Package:
Dimensions:
Net Weight:
OPERATING MANUAL
MODEL EQ2030 SPECS:
Balanced and unbalanced via male Input Type:
and female XLR connector or 1/4"
phone jack
20 KΩ balanced Input Impedance:
10 KΩ unbalanced
+20 dBv balanced or unbalanced Maximum Input Level:
Balanced and unbalanced via male Output Type:
XLR connector or 1/4" phone jack
600 Ω balanced
Output Impedance:
Maximum Output Level:
+20 dBv (7.8 Vrms) into a 600 Ω
Unbalanced:
load or greater
+26 dBv (15.6 Vrms) into a 600 Ω
Balanced:
load or greater
+6 dB to full attenuation Input Gain Control:
± 15 dB, +20 dBv into 600Ω Boost Cut:
25,40,63, 100, 160, 250, 400, 630, Center Frequencies:
1k,1.6k, 2.5k, 4k, 6.3k, 10k,
and 16 kHz ± 5%
Active bandpass filters (no inductors)
±5% of nominal center frequency
Filter Type:
Frequency Accuracy:
Frequency Response
(with all sliders centered):
<.01% THD, 20 Hz to 20 kHz
Bandwidth (-3 dB points): 7 Hz -85 kHz
Harmonic Distortion:
104 dB below full output
Noise (unweighted,
9 volts per microsecond
20 kHz bandwidth):
Slew Rate:
120 VAC, 60 Hz, 1/4 A, 5x20 fuse
Power Requirements
230 VAC, 50 Hz, .125 A, 5x20 fuse
US Model:
2 rack spaces
Export Model:
19"W x 6"D x 3 1/2"H
Package:
10 lbs.
Dimensions:
Net Weight:
12340 World Trade Drive, San Diego, CA 92128
(800) 854-2235
www.carvin.com
Balanced and unbalanced via male
and female XLR connector or 1/4"
phone jack
20 KΩ balanced
10 KΩ unbalanced
+20 dBv balanced or unbalanced
Balanced and unbalanced via male
XLR connector or 1/4" phone jack
600 Ω balanced
+20 dBv (7.8 Vrms) into a 600 Ω
load or greater
+26 dBv (15.6 Vrms) into a 600 Ω
load or greater
+6 dB to full attenuation
± 15 dB, +20 dBv into 600Ω
25,31.5, 40, 50, 63, 80, 100, 125,
160, 200, 250, 315, 400, 500, 630,
800, 1k,1.25k, 1.6k, 2k, 2.5k, 3.15k,
4k, 5k, 6.3k, 8k, 10k, 12.5k, 16 k
and 20k ± 5%
Active bandpass filters (no inductors)
±5% of nominal center frequency
±1 dB, 10 Hz to 45 kHz
<.01% THD, 20 Hz to 20 kHz
104 dB below full output
9 volts per microsecond
120 VAC, 60 Hz, 1/4 A, 5x20 fuse
230 VAC, 50 Hz, .125 A, 5x20 fuse
3 rack spaces
19"W x 6"D x 5 1/4"H
13 lbs.