B-52 AT112 User Manual

	IMPORTANT SAFETY
		INSIDE THIS INSTRUCTION MANUAL
	INSTRUCTIONS!
		Important Safety Instructions / Features	.....2
		Product Information.......................................	3
1)	Read these instructions.	AT-112 Controls ..............................................	4-5
2)	Follow all instructions.
		Warranty Information.....................................	5-7
3)	Keep these instructions.
4)	Heed all warnings.	Contact Information .......................................	8

5)DO NOT turn on the AT-112 without the loudspeaker connected.

6)Do not use the AT-112 near water. Be extra

cautious when moving the AT-112 during	AT-112 ALL-TUBE COMBO
rain or while transporting it over wet surfaces
as water might splash onto the amplifier.	This AT-112 is a 2 channel, all-tube combo that gives
6) Clean only with dry cloth.

7)Do not block any ventilation openings and you unparalleled tone and astounding versatility. The

	operate in accordance with manufacturer’s	clean channel yields sparkling vintage tone that stays
	instructions.	clean even at high volume. The overdrive channel
	8) Do not install near heat sources such as	unleashes a modern high gain assault seldom found in
	radiators, stoves or other devices that may
		a compact combo. The contour (mid-scoop) control
	produce heat.

9)Do not defeat the safety purpose of the gives you astounding control over the all important

		polarization or grounding-type plug. A	midrange. The Global section features Low-Res
		polarized plug has two blades with one wider	(Resonance) and Reverb controls.
		than the other. A grounding-type plug has two
		blades and a third grounding prong. The wide	l All-Tube preamp/poweramp signal path
		blade or the third prong is provided for your
		safety. If the provided plug does not fit your	l Overdrive Channel: Gain and Master controls, 3 band EQ
		outlet, consult an electrician for replacement	and Contour.
		of the obsolete outlet.	l Clean Channel: Master Volume with 3-Band EQ.
	10)	Protect the power cord from being walked on
			l Global Controls: Low-Res (Resonance) and Reverb
		or pinched, particularly at the plug and the
		point where it exits the AT-112 amplifier.	l Effects Loop with Level Controls
	11)	Only use attachments / accessories specified	l Line Out with Level Control
		by B-52 Professional.
			l Selectable 4 / 8 / 16 Ohms External Speaker Jacks
	12)	Unplug the AT-112 during lightning storms
		and when not in use.	l 2-Position Footswitch: Channel Select and Reverb.
	13)	Refer all servicing to qualified personnel.	l Rugged 18mm Baltic birch construction
		Servicing is required when the AT-112 has	l Detachable casters for easy transport
		been damaged in any way such as when
		power-cord or plug is damaged, liquid has	l Dimensions: 22.5” (W) x 19.5” (H) x 11” (D)
		been spilled into the amplifier, the unit has	l Weight: 40lbs.
		been exposed to moisture or rain, does not
		operate normally, or has been dropped.

14)To reduce the risk of fire or electric shock, do not expose the AT-112 to rain or moisture.

15)Moisture can damage the AT-112 and can

cause corrosion of electrical contacts.

16)Keep the unit out of extended or intense direct sun light. No containers filled with any type of liquid should be placed on or near the AT-112.

17)Never remove the front or rear panels of

	the AT-112 while it is connected to an	HEED ALL WARNINGS!
	electrical outlet.
		WARNING: To reduce the risk or fire or
		electrical shock do not expose this
		equipment to rain or moisture.

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AT-112 60-WATT ALL-TUBE 12” COMBO!

THANK YOU FOR CHOOSING THE B-52 PROFESSIONAL AT-112 COMBO!

The AT-112 is a straight forward, all-tube powerhouse with 60 relentless watts ripping through a custom-built B-52 - 12” loudspeaker. The AT-112's foundation is outstanding tone, versatility and power. Each channel - Clean and Overdrive - has its own set of gain, treble, mid and bass equalization controls for maximum flexibility.

The Clean Channel offers a broad palette of classic and modern tones. The Overdrive Channel features a wide range of tones ranging from bluesy grit to all out metallic shred. The contour control “scoops” the all important mids, effectively producing the ultimate metal tone or, when turned up, creates the warm, full bodied tones of the great classic amps.

The AT-112 also features solid Baltic birch construction and a two function heavy-duty footswitch.

AT-112 TUBES

Power amp:	2 x 6L6 / 5881
	1 x 12AX7
Preamp Tubes:	4 x 12AX7

CUSTOM B-52 TRANSDUCER

Power Handling:	120 watts
Freq. Response:	50-5K Hz
Nominal Impedance:	8 Ohms
Voice Coil Diameter:	2.5”

HEARING DAMAGE, PROLONGED EXPOSURE TO EXCESSIVE SPL

B-52 Professional amplifiers and speakers, including the AT-112, are capable of producing sound pressure levels (SPL) sufficient to cause permanent hearing damage to performers, production crews or people in the audience. Hearing protection devices such ear-plugs are recommended. Caution should be taken to avoid extended SPL is excess of 90 dBA.

PRECAUTIONS

Do not attempt to service the AT-112 by yourself. Refer all servicing to a B-52 Authorized service dealer. Service is required when the AT-112 has had liquid spilled on or inside the unit, has been damaged in any way, has been exposed to rain or moisture, does not operate normally or has been dropped.

WARNING – SHOCK HAZARD:

To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your AT-112 near a pool or other standing water. Make sure all blades on the polarized power plug are fully inserted into the power source. Ensure the power cord is not stretched, pinched or otherwise abused. Ensure the power cord is routed to avoid foot traffic. Your AT-112 amplifier should be cleaned only with a dry cloth.

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