Nady Systems PRM-400 User Manual

PRM-400

6 Channel Powered Mixer

with Internal DSP Effects

OWNER’S MANUAL

2

PRM-400

6-CHANNEL POWERED MIXER WITH INTERNAL DSP EFFECTS

Congratulations on your choice of powered mixers — you
have purchased one of the finest compact mixing consoles
on the market today. This unit was developed using the
expertise of professional sound engineers and working musi­cians. You will find that your new NADYAUDIO PRM-400
has superior performance and greater flexibility than any
other powered mixer 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 mixing
consoles.

Date of Purchase

Dealer’s Name

City

State

Zip

Model #

Serial #

CONTENTS

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

FEATURES ...................................................................................................................................................... 4

INSTALLATION.................................................................................................................................................. 5

1. Inspection ...................................................................................................................................................... 5

2. Rack Mounting .............................................................................................................................................. 5

3. Setup and Operation...................................................................................................................................... 5

CONTROLS AND CONNECTIONS .................................................................................................................. 6

1. Channel Input Section ....................................................................................................................................6

2. Master Section ................................................................................................................................................8

a. Aux Sends/Returns Function and Operation .......................................................................................... 8

b. Master Mix Function and Operation ........................................................................................................8

c. Digital Echo Effects Function Operation ..................................................................................... ...........10

d. Monitor Function and Operation ............................................................................................................10

e. Power Connection, Indicators, and Switches ........................................................................................11

4. Connections ................................................................................................................................................12

SPECIFICATIONS............................................................................................................................................ 13

BLOCK DIAGRAM ..........................................................................................................................................14

WARNING

3

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.

ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

An equilateral triangle enclosing a lightening flash/arrowhead symbol is
intended to alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure which may be of sufficient
magnitude to constitute a risk of electric shock.

An equilateral triangle enclosing an exclamation point is intended to alert
the user to the presence of important operating and service instructions in
the literature enclosed with this unit.

FEATURES

4

The PRM-400 is compact desk console or rackmountable 200W/channel stereo powered mixer with 16 built-in selec­table preset DSP echo and reverb effects and a comprehensive mixer section with extensive routing capability. The
PRM-400 is a versatile audio tool that combines exceptional flexibility and performance, and is ideal for many small
venue/live sound reinforcement applications.

• Superior audio performance with low noise and powerful,
full-spectrum transparent audio and natural sounding selec­table echo/reverb effects

• 6 mono balanced XLR mic and balanced 1/4” line inputs,
trim controls and switchable 20dB pads, 3-band EQ’s, Peak
overload LEDs, Aux, Effects and Pan controls

• Aux/Monitor switch allows the PRM-400 to be used as
either a stereo main (FOH) or a mono main and monitors
powered mixer

• Stereo power amplifier delivers 200W/side @ 4 Ohms. Fan­cooled, bipolar amplifier design for longest life and maxi­mum reliability.

• Dual 7-band master graphic EQ (with bypass switch) can
be used in stereo or mono for main and monitor EQ

• Aux Send and Aux Return with Aux Send and Aux Return
controls

• Six 1/4” TRS inserts allow independent connection of
effects devices for each mono channel

• Stereo Master inserts with Pre EQ and Post EQ 1/4” TRS
jacks

• 60 mm faders on all channels and master L/R and Effect
bus mix for precise level control

• High quality sealed pots with center detents (EQ, EFF,
PAN)

• Tape In and Record Out RCAjacks with Tape level control

• Built-in DSP (Digital Sound Processor) for ECHO

(REVERB) with 16 selectable preset level and echo inter­vals and separate Repeat control, Effects Return and both
individual channel and master mix Effects Send controls,
master Effects fader, separate effects PFL monitoring, and
numeric LED display

• Headphone output with separate volume adjust

• PFL control for each channel allows headphone monitoring

independent of channel volume

• Switchable global 48V phantom power

• Dual 10-segment LED meter for L/R main and PFL

• Erasable area above all faders for notations

• Internal AC supply with 115/230V select switch

• Road-tough all steel construction. Rack ears supplied.

• Dimensions & Weight: 16” x 17” x 6” (406 x 432 x 152

mm), 27.8 lbs (12.6 Kg)

5

INSTALLATION

To ensure years of enjoyment from your NADY AUDIO PRM-400 powered mixer console, please read this manual thoroughly
before using the unit.

1. INSPECTION

Your NADY AUDIO PRM-400 was carefully packed at the factory in packaging designed to protect the units in shipment.
Before installing and using your unit, carefully examine the packaging and all contents for any signs of physical damage that
may have occurred in transit.

[Please note: Nady Systems is not responsible for shipping damage. If your unit is damaged, do not return to Nady, but
notify your dealer and the shipping company (if shipped to you) immediately to make a claim. Such claims must be made by
the consignee in a timely manner.]

2. RACK MOUNTING

Enclosed in the shipping box you will find a rackmount kit. If you want to make your PRM-400 a rack mixer, remove the
screws from the side panels and use them to attach the rack ears.

(Note: The rack ears are supplied as “left” and “right” and must be attached as such.)

3. SETUP AND OPERATION

Parts of the unit can become very warm during use. This is normal during operation. Care should be taken to ensure that
there is enough space around the unit for cooling (at least 12” or 30cm). Do not place the PRM-400 on high temperature
devices such as power amplifiers, etc., or the unit may overheat in operation. Also, do not place the unit on speakers as this
may cause them to move and/or fall due to speaker vibrations.

Although the unit’s chassis is shielded against radio frequency (RF) and electromagnetic interference (EMI), extremely high
fields of RF and EMI should be avoided.

The PRM-400 has an internal power supply and is designed to operate from an external AC source. Power requirements
for electrical equipment differ from area to area. Be sure to confirm that the voltage selected by the voltage selector switch
on the back panel is proper for your area (120VAC/60 Hz or 230VAC/50Hz) per the information below:

Europe (except UK): 230V, 50Hz

UK and Australia: 240V, 50Hz

USA and Canada: 120V, 60 Hz

For other areas, please check with local authorities.

When ready to operate, plug the AC cord into the power source. Make sure that the unit is turned off before connecting to
the AC power source to avoid possible loud transients which can damage your speakers or your ears, especially when mon­itoring with headphones. Set the noted controls to the positions indicated below to further minimize the chance of undesired
noise when first powering up your PRM-400 :

LEVEL FADERS (11,27A,27B,28)................................................................................................................SET TO MINIMUM

HI, MID & LOW EQ’S (6) AND PAN CONTROLS (9)..................................TURNED TO THE CENTER DETENT POSITION

AUX , EFF CONTROLS & PHONES LEVEL CONTROLS (7,8,36) ..........TURNED COMPLETELY COUNTERCLOCKWISE

ALL OTHER CONTROLS SHOULD ALSO BE TURNED COMPLETELY COUNTERCLOCKWISE.

Power up the unit as noted in Power Connections, Indicators, and Switches (Section 3e in CONTROLS AND

CONNECTIONS).