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Modèle:
1031A
Date:
1993
Catégorie:
Groupe:
Description:
Monitor Speaker
Information
The 1031A is a compact monitoring Speaker designed for broad
band high output and low coloration.
Due to its small cabinet, this Speaker is ideally suited to
applications such as: high powered Near Field monitoring, TV
broadcast monitoring and mobile vans This speakers precision
even allows for CD mastering. It may be either horizontally
or vertically mounted, by simple rotation of the Directivity
Control Waveguide (DCW).
Designed as an active Speaker, this unit includes drivers,
power ^ amplifiers andactive Crossover filtering. This
provides a totally
dedicated and reliable system which simply requires a signal
input and a mains supply.
The Amplifier unit is mounted to the rear of the Speaker
cabinet on quick release vibration isolators, to ensure long
term reliability. This unit incorporates power amplifiers,
Bass and treble driver overload protection, Amplifier
thermal overload protection, active Crossover filter, treble
tilt, Bass tilt and Bass roll-off controls.
By use of active tone controls, this Speaker may be exactly
matched to any application. These include free field
mounting, near field on top of console, wall mounting in
control room and even corner mounting. These versatile
controls allow for precise alignment of the Speaker to
differing acoustic environments, making it a true all rounder.
The 1031A uses DCW technology in conjunction with some of
the finest driver technology.
The woofer unit is a high efficiency 210 mm polymer
composite cone, custom optimized for use in a small active
cabinet.
The tweeter unit is a 25 mm metal dome with pure piston
behavior upto 23 kHz. When mounted in the DCW this driver
offers superior transient and off axis response to
conventional direct radiating soft domes.
These has resulted in perfect driver directivity matching as
well as phase and delay uniformity at the Crossover frequency.
DCW technology also ensures low diffraction and constant
directivity in addition to providing higher driver
sensitivity. The speakers response is thus flat upto an
angle of 60 degrees.
The cabinet is constructed of veneered MDF, which is heavily
braced to eliminate structural resonance.
Carefully placed damping remove internal standing waves
which might lead to coloration in the midrange.
Non resonant port techniques have been employed to eliminate
the effects of port ringing found in conventional designs.
Type manuel:
manuel de réparation
Pages:
44
Taille:
4.46 Mbytes (4679084 Bytes)
Langue:
english
Révision:
Manuel-ID:
Date:
1993 01 01
Qualité:
Document scanné, la lecture en partie mal, en partie illisible.
Date de transfert:
2017 08 16
MD5:
223d6a10f4c01d9c59f3ecd9e5e62a4f
Téléchargements:
971
Information
1. General Information
... 1-1
1.1
Description ... 1-1
1.2 Technical specifications
... 1-2
1.2.1 System
specifications ... 1-2
1.2.2 Amplifier section
... 1-3
1.2.3 Crossover section ... 1-3
2. Functional
description ... 2-1
2.1 General description
... 2-1
2.2 Circuit
Description ... 2-2
2.2.1 Input Amplifier and Crossover
network ... 2-2
2.2.2 Treble and Bass driver protection circuit
... 2-2
2.2.3 Power Amplifiers
... 2-3
2.2.4 Power
supply ... 2-3
3. Adjustments
... 3-1
3.1 Test configuration
... 3-1
3.2 Adjustment
points ... 3-1
3.3 Adjustment
procedures ... 3-2
3.3.1 Bass Amplifier offset voltage and bias current
adjustment ... 3-2
3.3.2 Treble Amplifier offset voltage and bias current
adjustment ... 3-2
3.3.3 Crossover network level control
adjustment ... 3-2
4.
Servicing ... 4-1
4.1 Safety
considerations ... 4-1
4.2 Servicing facilities
... 4-1
4.3 Disassembly
instructions ... 4-2
4.3.1 Removing the rear panel
... 4-2
4.3.2 Detaching the Amplifier deck
... 4-2
4.3.3 Detaching the circuit board
... 4-2
4.4
Troubleshooting ... 4-3
4.4.1 Checking Crossover filter response
... 4-3
4.4.2 Checking the total voltage gain
values ... 4-4
4.4.3 Voltage gain adjustment
procedure ... 4-4
4.4.4 Checking the protection
circuits ... 4-7
4.4.5 Changing the Power Amplifier Driver Board
... 4-8
4.4.6 Changing the Power Transistors
... 4-8
5. Spare Parts
... 5-1
5.1 Ordering Information
... 5-1
5.2 Recommended spare parts
stock ... 5-1
6.
Drawings ... 6-1
List of
drawings ... 6-1