dbx Pro 286A manual Mic Preamp / Processor, For More Information Contact

286A

MIC PREAMP / PROCESSOR

	+30								4	5	6	4	5	6										4k		4	5	6			4	5	6	4	5	6		-15			2:1			0		286A
									3		7	3		7												3		7			3		7	3			7
+15		+40				48V																	1k			8k											-30			-5 1.5:1	5:1	-10			+5
						PHANTOM	HIGHPASS	PROCESS	2		8	2		8												2		8		2			8	2			8
		LEVEL (dBu)				POWER	(80Hz)	BYPASS	1		9	1		9		GAIN REDUCTION dB										1		9		dB	1		9	1			9				THRESHOLD					Mic Preamp/
		-20	-10	0	CLIP										30	25	20	15	12	9	6	3							1	6											-	+			CLIP	Processor
+10	dB	+60							OFF		10	OFF		10									800	Hz	10k	OFF		10			OFF		10	OFF		10	OFF	dBu	+15	MIN	10:1		-30	dB	+10
	GAIN									DRIVE			DENSITY										FREQUENCY			THRESHOLD					LF DETAIL			HF DETAIL			THRESHOLD				RATIO			GAIN
			MIC PREAMP											COMPRESSOR												DE-ESSER							ENHANCER						EXPANDER/GATE						OUTPUT

15 WATTS

PROFESSIONAL PRODUCTS A HARMAN INTERNATIONAL COMPANY

MODEL 286A

100V 50/60Hz MIC PREAMP/PROCESSOR

120V 60Hz

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

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 4,403,199 4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793 5,444,788

INSERT		MONO
TIP = OUT (286A PREAMP OUT)		PLUG
	286A PREAMP OUT (MULT)

TIP = SEND (286A PREAMP OUT TO EFFECTS)		STEREO
RING = RETURN (FROM EFFECTS TO 286A)		PLUG
	FOR USE AS AN EFFECTS LOOP

TIP = PIN 2 = +

RING = PIN 3 = -

SLEEVE = PIN 1 =

OUTPUT INSERT LINE INPUT MIC INPUT

The microphone processor shall have one channel with an audio frequency response of 20Hz — 20kHz +0.5, -0.5dB, an electronically floating bal- anced XLR microphone input with an impedance of not less than 1.5kΩ and with a maximum input level of not less than 0.2Vrms. The unit shall also have an electronically floating balanced 1⁄4" TRS line level input with an impedance of not less than 20kΩ and with a maximum input level of +21dBu. The impedance of the unbalanced 1⁄4" TRS output shall be no more than 100Ω with a maximum out- put level of not less than +21dBu. Total harmonic distortion shall typically be no more than 0.08% in operation with all processing controls set to Off. Dynamic range shall typically be 105dB with pro- cessing engaged. Output level shall be adjustable from -30dB to +l0dB via a front panel gain control. A 1⁄4" TRS insert jack with an input impedance of not less than 5kΩ and maximum level of not less than +21dBu and an output impedance of not more than 100Ω and a maximum output level of not less than +21dBu shall be accessible at the rear panel. The insert shall be positioned in the signal path between the output of the mic preamplifier and the input to the processing section. The unit will pro- vide up to six signal processing functions simulta-

MIC INPUT	Floating balanced, Pin 2 Hot	Distortion	Typically <0.05%THD, 20Hz-
Impedance	1.75kΩ		20kHz, 15dB G/R, +10dBu
Maximum Level	0.2Vrms		Output, DENSITY @ 0
Gain Adjustment Range	+10dB to +60dB	DE-ESSER
Phantom Power	+48VDC	Characteristic	WIdeband Gain Reduction
CMRR	>40dB, typically 55dB	Frequency Range	800Hz to 10kHz High Pass,
		Release Time	12dB/octave Program-
LINE INPUT	Floating balanced, TIP Hot		Dependent; approximately
Impedance	30kΩ unbalanced, 60kΩ balanced		1mS/dB
Maximum Level	>+21dBu, balanced or unbalanced	ENHANCER
Gain Adjustment Range	-20dB to +30 dB	HF Detail Characteristic	Program-controlled shelving
CMRR	>40dB, typically 55dB		equalizer, approximately 15dB
			maximum HF boost
INSERT(4” TRS phone)	Normalled; tip is Send, ring is Return	LF detail Characteristic	Bell-shaped boost @ 80Hz, bell-
Ring :Impedance	>5kΩ		shaped cut @250Hz, ratio is
Maximum Level	>+21dBu		approximately 2:1
Tip: Impedance	100Ω	EXPANDER/GATE
Maximum Level	>+21dBu, >+20dBm (600Ω load)	Threshold Range	OFF to +15dBu
Noise	<-84dBu, unweighted (20Hz-20kHz);	Expansion Ratio	Adjustable 1.5:1 to 10:1
Distortion	<0.01% THD, 20Hz-20kHz, +10dBu	Maximum Depth	>50dB
		Attack TIme	Program-Dependent, approxi-
			mately 2mS
LINE OUTPUT (4” TRS phone)	Balanced/Unbalanced	Release TIme	Program-Dependent, approxi-
Impedance	100Ω unbalanced, 200Ω balanced		amtely 10mS/dB
Maximum Level	>+21dBu, >+20dBm (600Ω load)	DYNAMIC RANGE	Typically 105dB
Gain Adjustment Range	-30dB to +10dB
Noise	<-80dBu (typically -85dBu, unweight-	Power Requirements	15 Watts
	ed (20Hz-20kHz);	Operating Voltage	DO: 120VAC 60Hz, 100VAC
Frequency Response	20Hz to 20kHz, +0.5, -0.5dB		50/60Hz; EU: 230VAC 50/60Hz
Distortion	<0.08%THD, 20Hz-20kHz, +10dBu,	Operating Temperature	0°C to 45°C (32°F to 113°F)
	all Processing Controls OFF
COMPRESSOR		Dimensions	1.75" x 5.75" x 19" (4.5cm x
Threshold Range	-40dBu to +20dBu		14.6cm x 48.5cm)
Threshold Characteristics	OverEasy®	Weight	Net Weight: 4.68 lbs/2.13 Kgs
Compression Ratio	>4:1 For input levels beyond 20dB		Shipping Weight: 6.54 lbs/2.97
	above threshold		Kgs
Maximum Compression	30dB
Attack Time	Program-Dependent; adjustable
Release Time	Program-Dependent; adjustable

neously, including: preamplification, compression,

de-essing, high spectral enhancement, low spectral enhancement and downward expansion/gating. The compression circuitry shall employ a hybrid feed-back, feed-forward design and a soft knee compression curve. The microphone processor shall have a gain control ranging from +l0dB to +60dB for Mic In and -20dB to +30dB for Line In, a phantom power switch which activates the +48VDC phantom power circuit, a High Pass Filter switch which activates a third order high pass filter with a 3dB corner frequency of 80Hz and a Process Bypass switch, which bypasses any subsequent dynam- ics processing in the unit. The processing section shall contain the following controls: Compressor Drive, Compressor Density, De-Esser Frequency, De-Esser Threshold, LF Detail, HF Detail, Expander/ Gate Threshold, Expansion Ratio and Output Gain. The following LEDs for metering and sta- tus indication shall exist on the unit: Input Level (3 LEDS), Input Clip, Phantom Power, High Pass Filter, Process Bypass, Compressor Gain Reduction (8 LEDs), De-esser (2 LEDs), Expander/Gate Threshold (2 LEDs), Output Clip. The power requirement shall be 100VAC 50/60Hz, 120VAC 60Hz for domestic or 230VAC 50/60Hz for Europe. Dimensions shall be 1.75" x 19" x 4" (4.45cm x 48 .2cm x 10.16cm), The net weight shall be 4.68 lbs/2.13 Kgs and the shipping weight shall be 6.54 lbs/2.97 Kgs. The unit shall be a dbx 286A Mic Preamp/Processor.

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

	FOR MORE INFORMATION CONTACT:
®	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

A Harman International Company