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Block Diagram AC285

Specifications of the AC 285

Frequency Response:  20-18 kHz  ±1dB

10-30 kHz  ±3dB

Gain:

Instr:

-12dB

Spkr:

-40dB

Input Impedance:

Inst:

> 1 meg

Spkr:

>200 k

Output Impedance: 200

Power Requirements:

9V Battery
15-48V Phantom
9V AC Adapter
(DOD PS3)

THD (1kHz, Inst @ 0dBu, 9V batt):

<0.08%

Signal to Noise Ratio (Inst @ -10dBu, 9V):

Flat:

>86dB

Spkr Emulation:

>80dB

Maximum Input Level (Inst):

7dBu (9V battery or adapter)
5dBu (15V Phantom)
20dBu (48V Phantom)

Supply Current:

8 mA (9V battery)

+

-

-12dB (INST)
-40dB (SPKR)

PAD

Phantom Power

Balanced

Low-Z
Output

1

2

3

Left

Ground

Unbalanced

Output

Unbalanced

Hi-Z Input

+

Battery

FLAT 4x12
COMBO

Summary of Contents for AC 260

Page 1: ...rature have been indi vidualized for each box Determine which box you have and consult the following text until you reach the section that is specific to your box AC 260 Direct Box Features of the AC...

Page 2: ...ce 50K ohms to low imped ance 600 ohms or low impedance to high imped ance Ground lift switch to fix ground loop hum problems Allows a hi impedance unbalanced source to directly feed a low impedance b...

Page 3: ...ts 50K ohms unbalanced High Impedance Connectors 2 1 4 inch mono phone jacks Attenuation Range Switch 0 12 40 dB attenuation Frequency Response 60 to 15 kHz 3 dB AC 275 Active Direct Box Features of t...

Page 4: ...h impedance input if desired This output is hard wired to the input Set the ground lift switch to the position with the least amount of hum or noise Set pad switch to INSTRUMENT for line level input s...

Page 5: ...Frequency Response 20Hz 20kHz 0 5dB...

Page 6: ...0dBu 48V phantom Supply Current 4mA 9V battery 4mA 15V phantom 8mA 48V phantom Input Connector 1 4 tip sleeve Output Connector XLR 1 4 tip sleeve Dimensions 2 5 x4 5 x1 5 Weight 15oz 422g Note 0dBV 1...

Page 7: ...nect the low impedance output of the AC 285 to a mixing console or other low impedance input Connect the unbalanced 1 4 tip sleeve output to a high impedance input if desired Set the ground lift switc...

Page 8: ...Battery 15 48V Phantom 9V AC Adapter DOD PS3 THD 1kHz Inst 0dBu 9V batt 0 08 Signal to Noise Ratio Inst 10dBu 9V Flat 86dB Spkr Emulation 80dB Maximum Input Level Inst 7dBu 9V battery or adapter 5dBu...

Page 9: ...y Utah 84070 Telephone 801 566 8800 FAX 801 566 7005 International Distribution 3 Overland Drive Unit 4 Amherst New Hampshire 03031 U S A FAX 603 672 4246 Copyright 1994 DOD Electronics Corporation Pr...

Page 10: ...260 265 275 285 AC Instruction Manual...

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