Vanguard DA SERIES - User Manual

SAFETY INSTRUCTIONS
• Explanation of Graphical Symbols
CAUTION: To reduce the risk of electric shock, do
not remove cover (or back). No user-serviceable parts
inside. Refer servicing to qualied service personnel.
The lightning ash with arrowhead symbol, within an
equilateral triangle, is intended to alert you to the presence
of uninsulated “dangerous voltage” within the product’s
enclosure that may be of sucient magnitude to constitute
a risk of electric shock to persons.
The exclamation point within an equilateral triangle
is intended to alert you to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
11. Power-Cord Protecon - Power-supply cords should be routed
so that they are not likely to be walked on or pinched by items placed
upon or against them, paying parcular aenon to cords at plugs,
convenience receptacles, and the point where they exit from the
appliance.
12. Cleaning - The appliance should be cleaned only as
recommended by the manufacturer.
13. Nonuse Periods - The power cord of the appliance should be
unplugged from the outlet when le unused for a long period of me.
14. Object and Liquid Entry - Care should be taken so that objects
do not fall into and liquids not spilled into the inside of the appliance.
15. Damage Requiring Service - The appliance should be serviced
by qualified service personnel when:
a. The power-supply cord or the plug has been damaged; or
b. Objects have fallen onto,
or liquid has been spilled into the
appliance; or
c. The appliance has been exposed to rain; or
d. The appliance does not appear to operate nomally or exhibits
a marked change in performance; or
e. The appliance has been dropped, or the cabinet damaged.
16. Servicing - The user should not aempt to service the appliance
beyond those means described in the operang instrucons. All other
servicing should be referred to qualified service personnel.
17. Grounding or Polarizaon - The precauons that should be
taken so that the grounding or polarizaon means of an appliance is
not defeated.
1. Read Instrucons - All the safety and operang instrucons should
be read before the appliance is operated.
2. Retain Instrucons - The safety and operang instrucons should
be retained for future reference.
3. Heed Warnings - All warnings on the appliance and in the
operang instrucons should be adhered to.
4. Follow Instrucons - All operang and other instrucons should
be followed.
5. Water and Moisture - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink, laundry
tub,
in a wet basement, or near a swimming pool, etc.
6. Carts and Stands - The appliance should be used only with a cart
or stand that is recommended by the manufacturer.
PORTABLE CART
WARNING
7. Wall or Ceiling Mounting - The appliance should be mounted to
a wall or ceiling only as recommended by the manufacturer.
8. Ventilation - The appliance should be situated so that its location
or position does not interfere with its proper ventilation. For example,
the appliance should not be situated on a bed, sofa, rug, or similar
surface that may block the ventilation openings; or placed in a built-in
installation, such as a bookcase or cabinet that may impede the ow
of air through the ventilation openings.
9. Heat - The appliance should be situated away from heat sources
such as radiators, stoves, or other appliances that produce heat.
10. Power Source - The appliance should be connected to a power
supply only of the type described in the operating instructions or as
marked on the appliance.
APPLICABLE FOR USA, CANADA OR WHERE APPROVED FOR
USAGE
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE
PLUG TO WIDE SLOT, INSERT FULLY.
ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND.
DA12050
DA8050
DDA Series
Mul Channel Amplifiers
OWNER’S MANUAL
POWER
1-2
3-4
5-6
7-8
9-10 11-12
DA12050
POWER
1-2
3-4
5-6
7-8
DA8050

Summary

Safety Instructions and Symbols

General Safety Precautions

Read and retain instructions, heed warnings, and follow all operating instructions.

Environmental and Usage Safety

Avoid water, ensure proper ventilation, and keep away from heat sources.

Power and Servicing Safety

Follow power source guidelines, protect cords, and refer servicing to qualified personnel.

Graphical Symbols Explanation

Explanation of symbols for dangerous voltage and important operating instructions.

Amplifier Functions and Operation

Channel Level and Input Controls

Adjust channel levels and select input signals (R, L, R+L, BUS, LINE).

Power Mode Selection

Choose between Manual, Trigger, or Audio Sense for amplifier power control.

Bridge Mode Operation

Bridge adjoining channels for increased power output to a single speaker.

Product Specifications

DA12050 Technical Specifications

Details rated power, frequency response, S/N ratio, THD, and fuse rating.

DA8050 Technical Specifications

Details rated power, frequency response, S/N ratio, THD, and fuse rating.

Hardware Features and Controls

Amplifier Features

Highlights rack height, bridgeable channels, independent controls, and remote triggers.

Front Panel Overview

Describes the main power switch, power LED, and protection LEDs.

Rear Panel Connectivity

Details bus inputs/outputs, level controls, source selection, trigger inputs, and speaker connectors.

Warranty Information

Limited Five-Year Warranty

Details warranty coverage, exclusions, and purchaser's remedies for defects.

Vanguard DA SERIES Specifications

General

Signal to Noise Ratio	>100dB
Connectors (Output)	Binding posts
Frequency Response	20Hz - 20kHz
Input Impedance	10k ohms
Protection	Short circuit
Cooling	Fan
Connectors (Input)	XLR, TRS
Power Supply	100-240V, 50-60Hz