Nady Systems 3WA-1700 User Manual

3WA-1700

O W N E R ’ S M A N U A L

3-CHANNEL PROFESSIONAL P O W E R A M P L I F I E R

Congratulations on your choice of the NADY 3WA-1700 power amplifier — you have purchased one of the finest power amplifiers on
the market today. This unit was developed using the expertise of professional sound engineers and working musicians. You will find
that your new 3WA-1700 amplifier has superior performance and greater flexibility than any other amplifier in its price range. Please
read this manual carefully to get the most out of your new unit. Thanks for selecting NADY AUDIO as your choice in power amplifiers.

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3WA-1700

3-CHANNEL PROFESSIONAL POWER AMPLIFIER

Date of Purchase

Dealer’s Name

City

State

Zip

Model #

Serial #

C O N T E N T S

FEATURES ................................................................................2

WARNING ..................................................................................3

CONTROLS AND CONNECTIONS............................................4

1. Front Panel..............................................................................4

2. Rear Panel ..............................................................................5

INSTALLATION ..........................................................................6

1. Inspection ..............................................................................6

2. Contents..................................................................................6

3. Rack Mounting ........................................................................6

4. Amplifier Cooling ....................................................................6

INPUT CONNECTIONS..............................................................6

SPEAKER CONNECTIONS ......................................................7

SPECIFICATIONS ......................................................................9

NOTES......................................................................................10

• This 3-way amp allows you to power your left and right main
speakers AND your subwoofers, with no crossover necessary,
all from one 2u rack chassis. The 3WA-1700 easily powers four
8Ω speakers for the stereo mains and two 8Ω subwoofers with
450W of power per channel plus a whopping 800W for the
subs! A perfect amp for DJ's, traveling bands, or small clubs.

• Selectable internal Low Pass Filter can be adjusted from 50Hz
to 250Hz to maximize the tight punch of your subs.

• Filter / Source switch – to enable the internal low-pass filter and
use the left and right input signals for the subwoofer – or to
disable the internal filter to either use an external active
crossover or use the Sub channel to pass full-range signals for
monitor feeds or sound reinforcement.

• Selectable Low Cut Filter to minimize muddy bass and stage
rumble.

• Balanced XLR and 1/4" TRS inputs; binding post (banana plug)
outputs, detent volume controls for each channel.

• Full safety/reliability features: 4 variable speed fans for ultimate
cooling; noise-free on-off; built-in DC offset; independent DC
and thermal overload protection on each channel; short circuit
and speaker protection.

• Power ON, Signal, Clipping, and Protect LED indicators for
each channel.

• Roadworthy, rugged double rack space (2U) housing.

• ~115(60Hz) IEC power cord connector and 3AG fuse holder.

• Power Output Ch 1 & 2: 2 x 450W @ 4Ω,
Subwoofer: 800W @ 4Ω

• Dimensions (HxWxD): 3.5” x 19.0” x 17.2” (88.8x483x436mm)

• Weight: 46.2 lbs. (21Kg)

F E AT U R E S

Offering top power, superior performance and full professional operating features in a roadworthy compact chassis, the 3WA-1700
amplifier is perfect for even the most demanding sound reinforcement installation and touring applications.

WA R N I N G

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IMPORTANT SAFETY INSTRUCTIONS

When using this electronic device, basic precautions should always be taken, including the following:

1. Read all instructions before using the product.

2. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement, or near a
swimming pool, etc.).

3. This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling.

4. This product, in combination with headphones or speakers, may be capable of producing sound levels that
could cause permanent hearing loss. Do not operate for a long period of time at a high volume level or at a
level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an
audiologist.

5. The product should be positioned so that proper ventilation is maintained.

6. The product should be located away from heat sources such as radiators, heat vents, or other devices
(including amplifiers) that produce heat.

7. The product should be connected to a power supply only of the type described in the operating instructions or
as marked on the product. Replace the fuse only with one of the specified type, size, and correct rating.

8. The power supply cord should: (1) be undamaged, (2) never share an outlet or extension cord with other
devices so that the outlet’s or extension cord’s power rating is exceeded, and (3) never be left plugged into
the outlet when not being used for a long period of time.

9. Care should be taken so that objects do not fall into, and liquids are not spilled through, the enclosure’s
openings.

10. The product should be serviced by qualified service personnel if:
A. The power supply cord or the plug has been damaged.
B. Objects have fallen into, or liquid has been spilled onto the product.
C. The product has been exposed to rain.
D. The product does not appear to operate normally or exhibits a marked change in performance.
E. The product has been dropped, or the enclosure damaged.

11. Do not attempt to service the product beyond what is described in the user maintenance instructions. All
other servicing should be referred to qualified service personnel.

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C O N T R OL S AN D C O N N E C T I O N S

1. POWER SWITCH

To turn the unit ON or OFF, press the upper or lower portion of
this button. Before turning on the amplifier, check all connections
and turn down the level controls. A momentary muting is normal
when turning the amplifier on or off.

(Caution: Always turn on your power amplifier last, after all your
other connected equipment, and always turn off your power
amplifier before your other connected equipment.)

2. POWER LED INDICATOR

This LED illuminates when the power is turned “ON”.

3. SUBWOOFER LEVEL CONTROL

This controls the level of the signal for the Subwoofer channel.
The actual voltage gain is shown in dB. Turn the level down
(counterclockwise) if the Clipping LEDs (6) illuminate steadily
(indicating too strong an output signal).

4. CHANNEL 1 & 2 LEVEL CONTROLS

These control the level of channel 1 & 2.

5. SIGNAL LED INDICATORS

These LEDs illuminate to confirm the presence of an input
signal greater than 110mV on that channel of the amplifier.

FRONT PANEL

6. CLIP (PEAK) LED INDICATORS

These LEDs illuminate if the corresponding channel’s output is
within 3dB of clipping. Occasional blinking of the LEDs is
acceptable, but if they remain on more than intermittently you
should turn down either the power amplifier’s level controls or
reduce the output level of the preceding component to avoid
audible distortion.

[Caution: Prolonged use at levels in excess of clipping can
cause damage to your speakers and even the internal amplifier.
Carefully monitor the clipping LEDs to avoid prolonged clipping.]

7. PROTECT LED INDICATORS

These LEDs illuminate if the power amplifier’s safety circuit has
been triggered to shut off the outputs. This can occur if the
output connection has been shorted, the load impedance is too
low, there is DC voltage at the outputs, or if the power amp
overheats due to excessive clipping. When either of these LEDs
is lit up, turn OFF the power and check the output connections
to verify that they are correct. If the output connections are
shorted, or a speaker is blown, correct the problem (or unplug
the speaker) and try turning the amp back on. It’s also prudent
to carefully feel if the amplifier is very hot due to excessive
clipping. If so, allow the amp to cool down before turning the
power back on.

(1)

(2)

(7)(3) (6)

(5)

(4)

(6)

(5)

(7)