background image

2

When Installing the Unit

• Do not expose the unit to rain or an environment

where it may be splashed by water or other liquids,
as doing so may result in fire or electric shock.

• Use the unit only with the voltage specified on the

unit. Using a voltage higher than that which is
specified may result in fire or electric shock.

WARNING

2. SAFETY PRECAUTIONS

• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe

operation.

• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or

cautions regarding safety.

• After reading, keep this manual handy for future reference.

Safety Symbol and Message Conventions 

Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards. 

Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.

Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.

WARNING

CAUTION

1. IMPORTANT SAFETY INSTRUCTIONS 

• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades

with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.

• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and

the point where they exit from the apparatus.

• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer,

or sold with the apparatus. When a cart is used, use caution when moving the
cart/apparatus combination to avoid injury from tip-over.

• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been

damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have
fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.

Содержание E-1231

Страница 1: ...tructions in this manual to ensure long trouble free use of your equipment 1 IMPORTANT SAFETY PRECAUTIONS 2 2 SAFETY PRECAUTIONS 2 3 GENERAL DESCRIPTION 4 4 FEATURES 4 5 HANDLING PRECAUTIONS 4 6 NOMENCLATURE AND FUNCTIONS Front 5 Rear 6 7 BLOCK DIAGRAM 7 8 DIMENSIONAL DIAGRAM 7 9 SPECIFICATIONS 8 Accessories 8 TABLE OF CONTENTS ...

Страница 2: ...ns Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or groundi...

Страница 3: ... the power supply plug never pull on the cord itself Operating the unit with a damaged power supply cord may cause a fire or electric shock When moving the unit be sure to remove its power supply cord from the wall outlet Moving the unit with the power cord connected to the outlet may cause damage to the power cord resulting in fire or electric shock When removing the power cord be sure to hold it...

Страница 4: ...n out switch an automatic EQ bypass function provides complete equalization bypass in the event of loss of AC power and an output muting function suppresses turn on turn off transients A security cover is included with the E 1231 to guard against accidental disturbance or intentional tampering when used in fixed installations The E 1231 can be mounted in a standard 19 rack and occupies 3 1 2 of ve...

Страница 5: ...ecords 7 Equalizer sliders These sliders are adjusted to tune or equalized the overall frequency response of a sound system 8 Equalizer indicator LED The indicator LED turns on whenever the equalizer IN OUT switch is IN 9 Equalizer IN OUT switch Equalizer switch puts the input signals either in circuit or out of circuit of the equalizer The OUT position provides flat audio response no matter what ...

Страница 6: ... connected to other equipment In such cases cut the loop by removing a short piece which should usually be mounted to the terminal Note This ground is not for protective ground 17 Output screw terminal The output terminal is balanced and 600 ohms in output impedance Place the supplied short piece between E and C to convert to unbalanced type 18 Input screw terminal The input terminal is balanced a...

Страница 7: ...H C E FUSE AC MAINS PT PEAK 15 V 15 V 12 V POWER EQ EBA HPF LPF LPF SLOPE FILTER H C E EBA INPUT POWER SUPPLY BA 8 DIMENSIONAL DIAGRAM Unit mm in Rear Front Front without security cover Security cover 466 18 35 482 6 19 300 11 81 317 2 12 48 280 11 02 4 7 10 5 Side 76 2 88 4 3 3 48 ...

Страница 8: ...ximum Output Level 20 dB with 600 Ω load Input Impedance 10 kΩ Output Impedance 600 Ω Hum and Noise 94 dB EQ in all sliders at 0 position 20 Hz 20 kHz BPF Indicators A red LED for output and input clipping A green LED for equalizer IN A green LED for power ON A green LED for filter IN Controls Equalizer Sliders 12 dB Input Level Control 12 dB Highpass Filter 12 dB per octave Adjustable Cutoff Freq...

Отзывы: