Infinity 310a - Specifications

- 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 ……………………………. 15
REF 311a ELECTRICAL PARTS LIST ADDENDUM….…….….18
IC/TRANSISTOR PINOUTS..…………………………….19
REF 310a SCHEMATICS………..……….…….………..22
REF 311a SCHEMATICS………..……….……….……..24
PACKING…………………….…………………………....26
Reference 310a/311a Specifications
Output Power: 116W RMS x 1 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 312W RMS x 1 channels @ 4 ohms; ≤1% THD + N
Signal-to-noise ratio: 81dBA (reference 1W into 4 ohms)
Dynamic power: 347W @ 2 ohms
Effective damping factor: 6.398 @ 4 ohms
Frequency response: 17Hz – 302Hz (–3dB)
Maximum input signal: 6.0V
Maximum sensitivity: Reference 310a - 250mV
Reference 311a - 75mV
DC Offset <50mV (-50%)
Output regulation: .05dB @ 4 ohms
Idle Current 800mA
Input Impedance 22kΩ
Max Current Draw 24A @ 4 ohms
40A @ 2 ohms
Dimensions: 12 x 11 7/16 x 2 11/16” (L x W x D)
(305mm x 290mm x 68mm)
Fuse: 30A
Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and details in
this and related publications are therefore subject to change without notice.
1
Power Amplifier Reference 310a/311a