dbx 1215 Specification Sheet page 2

1215
DUAL CHANNEL 15 BAND EQUALIZER
CHANNEL ONE
-10 0 +10 +18
+6
OUTPUT
LEVEL (dBu)
CLIP +/-15
0
+/-6
-12 +12
dB
EQ INPUT LOW RANGE
BYPASS GAIN CUT
-6
C A U T I O N :
T H E R I S K O F F I R E R E P L A C E
POWER
O N LY W I T H S A M E T Y P E F U S E .
AT T E N T I O N :
U N F U S I B L E D E R E C H A N G E D E
M E M E T Y P E .
24 WATTS
PROFESSIONAL PRODUCTS
A HARMAN INTERNATIONAL
COMPANY
MODEL 1215
GRAPHIC EQUALIZER
100V 50/60Hz
120V 60Hz
The graphic equalizer shall be a dual 15-band type with frequency centers
on standard ISO two-thirds octave frequencies ranging from 25Hz to
16kHz. The boost/cut ranges shall be switchable via recessed front panel
switches to either +/-6dB or +/-15dB and the selected range shall be
indicated on the front panel by either of two LEDs per channel. Low-noise
equalization sliders having a 45mm travel shall be utilized having center
detents at 0dB. The equalizer shall have front panel 41-detent rotary input
gain controls having a +/-12dB range. Bypassing the equalizer sections of
the signal path shall be accomplished via front-panel switches having
corresponding LEDs to indicate when each channel is bypassed. A 40Hz
low-cut Bessel filter per channel with 18dB/octave slope shall be insertable
in the signal path via front panel recessed switches with an LED to indicate
when the filter is active. Output levels shall be monitored on four-LED
peak-reading bar graphs calibrated to read -10, 0, +10, and +18dBu.
Electronically balanced/unbalanced inputs shall include 1/4" TRS, female
XLR, and screw terminal barrier strip, while servo-balanced/unbalanced
outputs shall include 1/4" TRS, male XLR, and screw terminal barrier strip
shared with the input. A circuit/chassis ground lift jumper per channel shall
be strapped across circuit ground and chassis ground screw terminals and
shall be removable by the user.
balanced/unbalanced and RF filtered having a nominal input impedance
not less than 40kΩ balanced and 20kΩ unbalanced, and shall accept
maximum signal levels of not less than +21dBu. Outputs shall be servo-
balanced/unbalanced and RF filtered having a nominal output impedance
of not more than 200Ω balanced and 100Ω unbalanced, and shall be
capable of driving not less than +21dBu into 2kΩ or greater and not less
than +20dBm (into 600Ω) continuously.
Frequency response shall be better than 10Hz to 50kHz, +0.5/-3dB. Signal-
to-noise ratio shall be greater than 90dB, referenced to +4dBu. THD+Noise
shall be less than 0.005% with a 1kHz signal at +4dBu, while interchannel
crosstalk shall be lower than -80dB from 20Hz to 20kHz.
The internal power supply shall be constructed using a thermally-fused transformer mounted in a low hum orientation and shall
be magnetically isolated from equalizer circuitry by means of a mu-metal shield. The power cord shall be detachable from an
international standard IEC 320 power inlet receptacle. Unit shall be constructed to meet or exceed all applicable international
safety and regulatory agencies. Domestic unit shall be powered from 100VAC 50/60Hz, 120VAC 60Hz, while international unit
shall be powered from 230VAC 50/60Hz. Unit shall consume no more than 24W. Housing shall be of all steel/aluminum
construction and shall be rack-mountable in an IEC standard 19" rack and shall occupy a 2U (3.5") rack space. The unit shall be
a dbx 1215 Equalizer.
dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change
without notice.
®
A Harman International Company
25 40 63 100 160 250 400 630 1k 1.6k 2.5k
0
T O R E D U C E
R I S K O F E L E C T R I C S H O C K
D O N O T O P E N
U T I L I S E R AT T E N T I O N :
R I S Q U E D E C H O C E L E C T R I Q U E - N E PA S O U V R I R
W A R N I N G :
T O R E D U C E T H E R I S K O F F I R E O R E L E C T R I C
S H O C K D O N O T E X P O S E T H I S E Q U I P M E N T T O R A I N O R M O I S T U R E
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING
U.S. PATENTS: 4,234,804 4,316,107 4,329,598 4,331,931 4,377,792
4,403,199 4,409,500 4,425,551 4,434,380 4,454,433 4,471,324
4,473,793 OTHER PATENTS PENDING
Inputs shall be electronically
4k 6.3k 10k 16k
CHANNEL TWO
-10 0 +10 +18
+15
OUTPUT
LEVEL (dBu)
CLIP +/-15
0
0
-12 +12
dB
EQ INPUT LOW RANGE
BYPASS GAIN CUT
-15
OUTPUT
CONNECTOR POLARITY
PHONE: XLR:
TIP PIN 1
RING PIN 2
SLEEVE PIN 3
OUTPUT
Inputs
Connectors: 1/4" TRS, female XLR (pin 2
hot), and barrier terminal strip
Type: Electronically
balanced/unbalanced, RF
filtered
Impedance: Balanced 40kΩ, unbalanced
20kΩ
Max Input Level: >+21dBu balanced or
unbalanced
CMRR: >40dB, typically >55dB at
1kHz
Outputs
Connectors: 1/4" TRS, male XLR (pin 2
hot), and barrier terminal strip
Type: Impedance-
balanced/unbalanced, RF
filtered
Impedance: Balanced 200Ω, unbalanced
100Ω
Max Output Level: >+21dBu
balanced/unbalanced into
2kΩ or greater
>+18dBm
balanced/unbalanced (into
600Ω)
System Performance
Bandwidth: 20Hz to 20kHz, +0.5/-1dB
Frequency Response: <10Hz to >50kHz, +0.5/-3dB
+/-15dB range +/-6dB range
Dynamic Range: 109db
Signal-to-Noise: 90db
THD+Noise: <0.005%
Interchannel Crosstalk: <-80dB, 20Hz to 20kHz
586
25 40 63 100 160 250 400 630 1k 1.6k 2.5k
Dual Vacuum Tub
+6
+/-6 0
-6
CHANNEL 1
OUTPUT INPUT
OUTPUT INPUT
+ - - +
CHANNEL 2
OUTPUT INPUT
OUTPUT INPUT
+ - - +
Function Switches
EQ Bypass:
Low Cut (recessed):
Range (recessed):
Indicators
Output Level:
EQ Bypass:
Clip:
Low Cut:
+/-6dB:
+/-15dB:
Power Supply
Operating Voltage:
Power Consumption:
Mains Connection:
Physical
Dimensions:
Weight:
115db
97db Shipping Weight:
Note: Specifications subject to change.
FOR MORE INFORMATION CONTACT:
dbx Professional Products
8760 S. Sandy Pkwy.
Phone (801) 568-7660
Int'l Fax (801) 568-7583
customer@dbxpro.com
http://www.dbxpro.com
4k 6.3k 10k 16k
+15
1215
0
Graphic Equalizer
-15
INPUT
INPUT
Bypasses the graphic
equalizer section in the signal
path
Activates the 40Hz
18dB/octave Bessel high-
pass filter
Selects either +/- 6dB or +/-
15dB slider boost/cut range
4-LED bar graph (Green,
Green, Yellow, Red) at -10, 0,
+10, and +18dBu
1 LED: red
1 LED: red
1 LED: red
1 LED: yellow
1 LED: red
100VAC 50/60Hz, 120VAC
60Hz, 230VAC 50/60Hz
1215 24W; 1231 24W
IEC receptacle
1215: 3.5" H X 19" W X 7.9"
D (8.9cm x 48.3cm x 20.1cm)
1231: 5.25" H X 19" W X
7.9" D (13.4cm x 48.3cm x
20.1cm)
1215: 8.5 lbs.
1231: 10.6 lbs.
1215: 9.5 lbs.
1231: 11.6 lbs.
Sandy, Utah 84070
Fax (801) 568-7662