PIONEER S-A4-LR/XMD/E
Service Manual

S-A4-LR

2. SCHEMATIC DIAGRAM
Red Red L1
4.5mH

Red C1 C2

IN

Black

27µF

27µF

Woofer
White

White

SWN1649 Conductor
Red Clear with White Clear Black
1.1mH L2

L1 C1 3.0mH
47µF

C2
8.2µF

Clear R1
39

Midrange

Clear with White Clear

SWN1669
C3
3.9µF

L3

0.27mH

Tweeter

Clear with White

3. PRECAUTION OF REASSEMBLY AND DISASSEMBLY
3.1 Grille
The grille is fixed to the cabinet with catches, and it can be removed by pulling it toward you. When reinstalling, orient the grille with the badge at the bottom.

[Packing for the tweeter connecting cords]

3.2 Woofer
The woofer is attached to the baffle board from the outside with 6 screws. To remove the woofer, remove the grille first and remove the screws. To reinstall the woofer, place it so that its terminal board faces upward.

Packing SEC1495

Mid/Tw

3.3 Midrange and Tweeter
The midrange and tweeter are integrated into a coaxial unit, and the coaxial unit is attached to the baffle board from the outside with 4 screws. To remove this coaxial unit, remove the grille first and remove these screws. Then remove the packing covering the cord connections of the tweeter. When reinstalling the coaxial unit, place the midrange so that its terminal board faces downward. After reconnecting the tweeter cords, cover the cord connections by using packing (two SEC1495) to avoid short-circuiting, as illustrated at right.

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