Vanguard DA SERIES, DA8050, DA12050 Owner's Manual
DDA Series
Mul Channel Amplifiers
OWNER’S MANUAL
DA8050
DA8050
1-2
POWER
SAFETY INSTRUCTIONS
CAUTION: To reduce the risk of electric shock, do
not remove cover (or back). No user-serviceable parts
inside. Refer servicing to qualied service personnel.
1. Read Instrucons - All the safety and operang instrucons should
be read before the appliance is operated.
2. Retain Instrucons - The safety and operang instrucons should
be retained for future reference.
3. Heed Warnings - All warnings on the appliance and in the
operang instrucons should be adhered to.
4. Follow Instrucons - All operang and other instrucons should
be followed.
5. Water and Moisture - The appliance should not be used near
water - for example, near a bathtub, washbowl, kitchen sink, laundry
in a wet basement, or near a swimming pool, etc.
tub,
5-6
7-8
3-4
DA12050
DA12050
1-2
POWER
• Explanation of Graphical Symbols
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 sucient 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.
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.
11. Power-Cord Protecon - 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 parcular aenon 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.
5-6
7-8
3-4
9-10 11-12
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.
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.
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 aempt to service the appliance
beyond those means described in the operang instrucons. All other
servicing should be referred to qualified service personnel.
17. Grounding or Polarizaon - The precauons that should be
taken so that the grounding or polarizaon means of an appliance is
not defeated.
FUNCTIONS
Level Controls - Allows any of the channels to be adjusted independently to raise or lower the output of each channel.
R R+L L Switch - When BUS input is selected, this switch is used to direct the channel to play the le signal from the input “L” or the
right signal from the input “R”, or combined right and le signal from the input “R+L”.
BUS*LINE Switch - Allows each channel to play a variety of different inputs. Depending on the switch posion the channel amplifies
the signal connected to the BUS input and its own LINE input.
POWER MODE SELECTION
1. Manual
2. Trigger
3. Audio Sense
BRIDGE MODE
then be used to power one speaker. Do not connect more than one speaker to the outputs of the bridged channel.
3-24V DC/AC Trigger in - 3-24V AC or DC input to trigger power up with voltage from another device, such as a receiver. The voltage
12V DC Control Out -
DA12050
Rated Power Output:
Bridged Power Output:
>102 dB
900mV for 8Ω rated output
Input Impedance:
>22K Ω Bus
>10K Ω Line
DA8050
Frequency Response:
± 0.7dB, 20Hz to 20kHz, 8Ω
± 1.5dB, 20Hz to 20kHz, 4Ω
Damping Factor:
>60
<0.5% 20Hz to 20kHz
120V Version: T12A/250V
Rated Power Output:
Bridged Power Output:
>102 dB
900mV for 8Ω rated output
Input Impedance:
>22K Ω Bus
>10K Ω Line
Frequency Response:
± 0.7dB, 20Hz to 20kHz, 8Ω
± 1.5dB, 20Hz to 20kHz, 4Ω
Damping Factor:
>60
<0.5% 20Hz to 20kHz
120V Version: T10A/250V
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