Name: Infinity 611A
Brand: Infinity
Rating: 4 (1 reviews)

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- CONTENTS -

SPECIFICATIONS ………………………………….……..1

FEATURES/TEST CONDITIONS……..…………………2

CONTROLS/CONNECTIONS………….……..…...…..…3

INSTALLATION………………….……...……..…...…...…5

BASIC TROUBLESHOOTING..…….…….………………7

TYPICAL SYSTEM WIRING..…….…….……………..…8

EXPLODED VIEW/PARTS LIST…….….….…………....9

MECHANICAL PARTS LIST……………..…………......10

AMPLIFIER BLOCK DIAGRAM…………………………11

P.C.B. DRAWINGS….…………………………………….12

ELECTRICAL PARTS LIST ……………………………. 16

REF 611a ELECTRICAL PARTS LIST ADDENDUM…….…20

IC/TRANSISTOR PINOUTS..…………………………….21

REF 610a SCHEMATICS………..……….…….………..27

REF 611a SCHEMATICS………..……….……….……..30

PACKING……………………….…………………………33

Reference 610a/611a Specifications

Output Power: 456W RMS x 1 channels @ 4 ohms; ≤1% THD + N

(14.4V supply) 657W RMS x 1 channels @ 4 ohms; ≤1% THD + N

Signal-to-noise ratio: 70dBA (reference 1W into 4 ohms)

Dynamic power: 761W @ 2 ohms

Effective damping factor: 6.336 @ 4 ohms

Frequency response: 17Hz – 302Hz (–3dB)

Maximum input signal: 6.0V

Maximum sensitivity: Reference 610a - 250mV

Reference 611a - 75mV

DC Offset <50mV (-50%)

Output regulation: .179dB @ 4 ohms

Idle Current 1.5A

Input Impedance 22kΩ

Max Current Draw 43A @ 4 ohms

70A @ 2 ohms

Dimensions: 12 x 15 x 2 11/16” (L x W x D)

(305mm x 381mm x 68mm)

Fuses: 30A x 2

Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in

this and related JBL publications are therefore subject to change without notice.

Power Amplifier Reference 610a/611a

Infinity 611A Service Manual

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