JBL 1201.1 Service Manual

Contents

JBL 1201.1 Service Manual Manual pdf 2 page image

- CONTENTS -SPECIFICATIONS ………………………………….……..1FEATURES/TEST CONDITIONS……..…………………2INSTALLATION………………….……...……..…...…...…3CONNECTIONS………………….……...……..…...…..…4SET-UP/CONTROLS ……..………………..…….….…...5INSTALLING NEON TUBES..…….…….………………..5BASIC TROUBLESHOOTING..…….…….………………6TYPICAL SYSTEM WIRING..…….…….……………..…7EXPLODED VIEW/PARTS LIST…….….….…………....8MECHANICAL PARTS LIST..…….…….……………......9AMPLIFIER BLOCK DIAGRAM…………………….……10P.C.B. DRAWINGS….……………………………….…….11ELECTRICAL PARTS LIST ..……….……….…….….…14VERSION II ELECTRICAL PARTS LIST ADDENDUM….……….18IC/TRANSISTOR PINOUTS..……..….…….….….….…..19GTO 1201.1 SCHEMATICS………..……………..……...25GTO 1201.1II SCHEMATICS………..…………………...28PACKING……..…………………………………………....31GTO 1201.1/ GTO 1201.1II SpecificationsOutput Power: 787W RMS x 1 channels @ 4 ohms; ≤1% THD + N(14.4V supply) 1114W RMS x 1 channels @ 2 ohms; ≤1% THD + NSignal-to-noise ratio: 70dBA (reference 1W into 4 ohms)Dynamic power: 1339W @ 2 ohmsEffective damping factor: 6.34 @ 4 ohmsFrequency response: 10Hz – 302Hz (–3dB)Maximum input signal: 6.1VMaximum sensitivity: GTO 1201.1 - 140mVGTO 1201.1II - 75mVDC Offset <50mV (-50%)Output regulation: .14dB @ 4 ohmsIdle Current 2.3AInput Impedance 22kΩMax Current Draw 73A @ 4 ohms125A @ 2 ohmsDimensions: 18 11/16 x 12 5/16 x 2 3/8” (L x W x D)(474mm x 313mm x 60mm)Fuses: 40A x 3JBL continually strives to update and improve existing products, as well as create new ones. The specifications and details inthis and related JBL publications are therefore subject to change without notice.Power Amplifier GTO 1201.1/1201.1II