dbx Pro 2031 manual Inputs Function Switches, Outputs Indicators, System Performance Power Supply

2031

SINGLE CHANNEL 31 BAND EQUALIZER / LIMITER WITH TYPE III NOISE REDUCTION

20

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

16k

20k

-10

0

+10

+18

10

6

3

1

+6

+15

OUTPUT

GAIN

LEVEL (dBu)

REDUCTION (dB)

CLIP

+/-15

2031

0

+10

+15

+/-6

0

0

Equalizer/Limiter

+5

+20

with TYPE III NR

TYPE III

-12

dB

+12

0

dBu

OFF

EQ

INPUT

LOW

PeakPlus

RANGE

NR

BYPASS

GAIN

CUT

THRESHOLD

-6

-15

OUTPUT

CHANNEL 1

INPUT

		C A U T I O N : TO REDUCE
POWER		THE RISK OF FIRE REPLACE	R I S K O F E L E C T R I C S H O C K		OUTPUT	OUTPUT		INPUT		INPUT
		ONLY WITH SAME TYPE FUSE .
			D O N O T O P E N			+	-	-	+
		AT T E N T I O N : UTILISER	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
		UN FUSIBLE DE RECHANGE DE	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	CONNECTOR POLARITY
		MEME TYPE .		PHONE:	XLR:
			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
				TIP	PIN 1
				RING	PIN 2
24 WATTS				SLEEVE	PIN 3
					OUTPUT		CHANNEL 2			INPUT
		PROFESSIONAL PRODUCTS			OUTPUT	OUTPUT		INPUT		INPUT
		A HARMAN INTERNATIONAL				+	-	-	+
		COMPANY
		MODEL 2215	MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING
		EQUALIZER/LIMITER WITH
		TYPE III NOISE REDUCTION	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
100V	50/60Hz		4,473,793 OTHER PATENTS PENDING
120V	60Hz

The graphic equalizer shall be a mono 31-band type with frequency centers on standard	Inputs		Function Switches
ISO one-third octave frequencies ranging from 20Hz to 20kHz. The boost/cut range	Connectors:	1/4” TRS, female XLR (pin 2 hot), and	Type III NR:	Activates dbx Type III Noise Reduction
shall be switchable via a recessed front panel switch to either +/-6dB or +/-15dB and the	Type:	barrier terminal strip	EQ Bypass:	Bypasses the graphic equalizer section
selected range shall be indicated on the front panel by either of two LEDs. Low-noise		Electronically balanced/unbalanced, RF		in the signal path
		filtered	Low Cut (recessed):	Activates the 40Hz 18dB/octave Bessel
equalization sliders having a 45mm travel shall be utilized having center detents at 0dB.
	Impedance:	Balanced 40kΩ, unbalanced 20kΩ		high-pass filter
The equalizer shall have a front panel 41-detent rotary input gain control having a +/-
	Max Input Level:	>+21dBu balanced or unbalanced	Range (recessed):	Selects either +/- 6dB or +/- 15dB slider
15dB range. Bypassing the equalizer section of the signal path shall be accomplished	CMRR:	>40dB, typically >55dB at 1kHz		boost/cut range
via a front-panel switch having a corresponding LED to indicate when it is bypassed. A	Outputs		Indicators
40Hz low-cut Bessel filter with 18dB/octave slope shall be insertable in the signal path
via a front panel recessed switch and shall have an LED to indicate when the filter is	Connectors:	1/4” TRS, male XLR (pin 2 hot), and bar-	Output Level Meter:	4-LED bar graph (Green, Green, Yellow,
active.		rier terminal strip		Red) at -10, 0, +10, and +18dBu
	Type:	Impedance-balanced/unbalanced, RF fil-	Gain Reduction Meter:	4-LED bar graph (all Red) at 0, 3, 6, and
The graphic equalizer shall incorporate dbx Type III™ Noise Reduction providing up to
		tered		10dB
20dB of broadband noise reduction, having a front panel switch to enable the noise	Impedance:	Balanced 200Ω, unbalanced 100Ω	Type III NR Active:	Yellow LED
reduction and an LED to indicate when it is active. The equalizer shall also be equipped	Max Output Level:	>+21dBu balanced/unbalanced into 2kΩ	EQ Bypass:	Red LED
		or greater	Clip:	Red LED
with a dbx PeakPlus™ limiter system having a front panel 41-detent rotary limiter
		>+18dBm balanced/unbalanced (into	Low Cut Active:	Red LED
threshold control varying from 0 to +24dBu (off) and a four-LED gain reduction bar
		600Ω)	+/-6dB range:	Yellow LED
graph calibrated to read 0, 3, 6, and 10dB. Output level shall be monitored on a four-			+/-15dB range:	Red LED
LED peak-reading bar graph calibrated to read -10, 0, +10, and +18dBu.	System Performance		Power Supply
Electronically balanced/unbalanced inputs shall include 1/4" TRS, female XLR, and	Bandwidth:	20Hz to 20kHz, +/-0.5dB
			Operating Voltage:	100VAC 50/60Hz, 120VAC 60Hz
screw terminal barrier strip, while servo-balanced/unbalanced outputs shall include 1/4"	Frequency Response:	<10Hz to >50kHz, +0.5/-3dB
				230VAC 50/60Hz
TRS, male XLR, and screw terminal barrier strip shared with the input. A circuit/chas-
	Noise Reduction In (+/-6 and +/-15dB range):		Power Consumption:	12W
sis ground lift jumper shall be strapped across circuit ground and chassis ground screw			Mains Connection:	IEC receptacle
	Signal-to-Noise:	>102dB, unweighted, ref: +4dBu, 22kHz
terminals and shall be removable by the user. Inputs shall be electronically
		measurement bandwidth	Physical
balanced/unbalanced and RF filtered having a nominal input impedance not less than	Dynamic Range:	>120dB, unweighted
40kΩ balanced and 20kΩ unbalanced, and shall accept maximum signal levels of not	Noise Reduction Out: (+/-6dB range):		Dimensions:	3.5" H X 19" W X 7.9" D (8.9cm x
less than +21dBu. Outputs shall be servo-balanced/unbalanced and RF filtered having a			48.3cm	x 20.1cm)
	Signal-to-Noise:	>94dB, unweighted, ref: +4dBu, 22kHz	Weight:	8.5 lbs. (3.9 kg)
nominal output impedance of not more than 200Ω balanced and 100Ω unbalanced, and
		measurment bandwidth	Shipping Weight:	9.5 lbs. (4.3 kg)
shall be capable of driving not less than +21dBu into 2kΩ or greater and not less than
	Dynamic Range:	>112dB, unweighted
+20dBm (into 600Ω) continuously.	Noise Reduction Out: (+/-15dB range):
Frequency response shall be better than 10Hz to 50kHz, +0.5/-3dB. Signal-to-noise ratio
	Signal-to-Noise:	>90dB, unweighted, ref: +4dBu, 22kHz	Note: Specifications subject to change.
shall be greater than 90dB, referenced to +4dBu, in either boost/cut range with noise
		measurement bandwidth
reduction disabled and shall be greater than 102dB with noise reduction enabled.	Dynamic Range:	>108dB, unweighted
THD+Noise shall be less than 0.04% with a 1kHz signal at +4dBu.	THD+Noise:	<0.04%, 0.02% typical at +4dBu, 1kHz
The internal power supply shall be constructed using a thermally-fused transformer	Noise Reduction:	Up to 20dB of dynamic broadband noise
		reduction
mounted in a low hum orientation and shall be magnetically isolated from equalizer cir-

cuitry by means of a mu-metal shield. The power cord shall be detachable from an inter- national 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 12W. 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 2031 Equalizer/Limiter with Type III Noise reduction.

FOR MORE INFORMATION CONTACT:

dbx engineers are constantly working to improve the quality of our products. Specifications are, there- fore subject to change without notice.

®￿

A Harman International Company

dbx Professional Products 8760 S. Sandy Pkwy.

Sandy, Utah 84070 Phone (801) 568-7660 Fax (801) 568-7662 Int’l Fax (801) 568-7583 customer@dbxpro.com http://www.dbxpro.com