Studer A1 User Manual

A Series Active Monitor Speakers
Date printed: 29.02.00 Service E4/1
4 SERVICE INSTRUCTIONS
4.1 General
Important! Repair work may only be performed by a trained service technician. The
primary fuse must be replaced by a spare fuse of exactly the same type and
rating. The unit must not be opened by the user – risk of a severe electrical
shock hazard!
• During servicing, never short any two terminals.
• The settings of an assembled and aligned unit may slightly differ from the
ones of the aligned PCB.
• If acoustical measurements are performed with an MLS system, insatisfac-
tory results will be obtained unless obstacles are at a distance larger than the
current wavelength. For more information on frequency response meas-
urements, please refer to the Appendix, section 4.6 .
• In case of incorrect manipulation and/or adjustment, the manufacturer can-
not be made liable for failure or insatisfactory results.
4.2 Spare Parts
Order no.
Item
A1 A3 A5
Primary fuse (230 V)
(5 × 20 mm)
51.01.0114
(T 0.5 A L 250 V)
51.01.0116
(T 0.8 A L 250 V)
51.01.0119
(T 1.6 A L 250 V)
Primary fuse (115 V)
(5 × 20 mm)
51.01.0117
(T 1.0 A L 250 V)
51.01.0119
(T 1.6 A L 250 V)
51.01.0122
(T 3.15 A L 250 V)
Primary fuse (USA/Canada)
(5 × 20 mm)
51.01.1017
(1.0 A slow blow UL/CSA)
51.01.1020
(1.6 A slow blow UL/CSA)
51.01.1026
(3.2 A slow blow UL/CSA)
Woofer unit 15.258.210.00 15.258.110.00 15.258.010.00
Mid-range unit ----- ----- 15.258.020.00
Tweeter unit 15.258.240.00 15.258.140.00 15.258.040.00
* Complete backpanel/heat-sink assembly,
including power supply and amplifiers
* 15.258.230.00 * 15.258.130.00 * 15.258.030.00
Backpanel only, silk screened 15.258.220.00 15.258.120.00 15.258.050.00
Mains transformer 15.258.221.00 15.258.121.00 15.258.121.00
(2 pcs. used)
*
Power amplifier, preadjusted
*
15.258.222.00
*
15.258.122.00
*
15.258.052.00
Mounting bracket 15.258.223.00 ----- -----
Enclosure body, empty 15.258.229.00 15.258.129.00 15.258.059.00
Woofer protection grille, mounting kit 15.258.211.00 ----- -----
* Important note: When ordering a complete backpanel/amplifier assembly or a power am-
plifier unit, it is mandatory to declare the speaker type and serial number
(as indicated on the speaker's backpanel). Only if these conditions are met,
the manufacturer can ensure that the desired spare part is shipped with cor-
rect pre-alignments.

Studer A1 Specifications

General

Brand	Studer
Model	A1
Category	Speakers
Language	English