Nady Audio RPA-4 User manual

RPA-4

PORTABLE SYSTEM

4 CHANNEL PORTABLE SOUND SYSTEM

OWNER’S MANUAL

RPA-4

4 CHANNEL PORTABLE SOUND SYSTEM

Date of Purchase ____________________________________

Dealer’s Name ______________________________________

City _______________________________________________

State _____________________ Zip _____________________

Model # ____________________________________________

Serial # ___________________

• Compact (“take anywhere”) complete one-piece portable sound

system with built-in powered mixer and speaker

• Collapsible/locking handle and built-in rubber rollerblade wheels

• 100W RMS @ 4 Ω

• 4 mono balanced (XLR and 1/4" TRS) inputs

• 10" woofer and compression dome tweeter

• Channel Controls - Gain, Reverb, High EQ, Low EQ controls

• Master Volume, High, Mid and Low EQ controls

FEATURES

TABLE OF CONTENTS

Congratulations on your choice of the NADY AUDIO RPA-4

Portable Sound System — you have purchased one of the finest

portable sound systems on the market today. This unit was

developed using the expertise of professional sound engineers

and working musicians. You will find that your new NADY AUDIO

RPA-4 has superior performance and greater flexibility than any

other portable sound systems 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 portable

sound system.

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

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

INSTALLATION .......................................................................... 4

FRONT PANEL CONTROLS & CONNECTIONS ...................... 5

REAR PANEL CONTROLS & CONNECTIONS ........................ 6

SPECIFICATIONS ...................................................................... 7

• DSP Reverb with Level and Depth controls

• 1/4" Effect Send, Return, and Line Out jacks; RCA Tape In/Rec

Out

• Rugged enclosure with vinyl cover, carrying handle, and

basemount for mounting on a speaker stand

IMPORTANT SAFETY INSTRUCTIONS

WARNING

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.

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.

INSTALLATION

To ensure years of enjoyment from your NADY AUDIO RPA-4, please read and understand this manual thoroughly before

using the unit.

INSPECTION

Your RPA-4 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.

(Note: Nady Systems is not responsible for shipping damage. If the unit is damaged, do not return to us, but notify your dealer and the

shipping company immediately to make a claim. Such claims must be made by the consignee in a timely manner.)

CONTENTS:

•Instruction manual

•RPA-4 (verify that the unit’s serial number is same as shown on shipping carton)

•AC Power cord

•Warranty Card

POWER CONNECTION

The PRA-4 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.

FRONT PANEL CONTROLS & CONNECTIONS

(1)

FRONT PANEL

Note: 1 through 6 below are referenced to Channel 1. The other 3

channels are identical.

(1) GAIN CONTROL

The Gain Control determines the proportion of the channel signal

in the mix,

(2) REVERB CONTROL

The Reverb Control adjusts the level of signal sent by each

channel to the internal Reverb DSP (Digital Sound Processor).

The signal sent is mono, post-High/Low and will be affected by the

channel Gain Control.

(3) HIGH CONTROL

Turn this control to the right to boost high frequencies on the

channel, adding crispness to percussion from drum machines,

cymbals and synths. Turn to the left to cut these frequencies,

reducing sibilance, hiss, or high frequency feedback. The control

has a shelving response giving 15dB of boost or cut at 12kHz.

(4) LOW CONTROL

Add warmth to vocals or extra punch to guitars, drums and synths

on the channel by turning this control to the right. Turn to the left

to reduce stage rumble, hum or to improve a mushy sound. The

control has a shelving response giving 15dB of bust or cut at

100Hz.

(5) LINE INPUT

The Line input is designed to accept balanced or unbalanced line-

level signals such as those from keyboards, drum machines, or

samplers. Use the GAIN control (1) to adjust for the desired level.

If a balanced signal is to be connected to the line input, then a

1/4" TRS (stereo) phone plug should be wired for: Tip = positive

(+), Ring = negative (-), Sleeve = ground.

(6) MIC INPUT

The Mic input is an electronically balanced XLR type designed to

accept signals from any balanced low impedance (Low Z)

microphone. It will be necessary to adjust the channel gain with

the input GAIN control (1) to achieve a nominal operating level.

The XLR jack is configured for: Pin1 = ground, Pin2 = positive (+),

Pin3 = negative (-).

(Note: Only either the Mic or the Line input of a given channel can

be connected at one time. Do not connect both simultaneously to

the same channel.)

(7) MASTER — VOLUME CONTROL

This controls the final level of the signal output.

(8) MASTER — REVERB CONTROL

This controls the level of the reverb effects sound.

(3) (4)

(2)

(5) (6)

(7) (8) (9) (10)

(11) (12) (13)

REAR PANEL CONTROL & CONNECTIONS

REAR PANEL

(17) POWER SWITCH

Turns the unit ON or OFF. Always turn level controls down before

turning on the unit.

(18) VOLTAGE SELECTOR SWITCH

For selecting the proper voltage (115/230VAC) to match the power

supply in your area.

Note: To avoid damage to your unit, always make sure this switch

is set to the correct supply voltage. Damage caused by improper

use is not covered by the warranty.

(18) (17)

(19)

(19) POWER CONNECTOR WITH FUSE HOLDER

This standard IEC power cord receptacle is used to connect the

AC power to your unit. It features a built-in fuse holder for a

5X20mm, (3.5A/250V for 115VAC, and 2.5A/250V for 230VAC

operation) fast-blow fuse. If the fuse continuously blows, shut off

the unit and have it serviced by qualified service personnel.

(20) EXTERNAL SPEAKER OUTPUT

1/4" (6.3mm) jack for connecting an external speaker cabinet to

the RPA-6. The connected speaker impedance must be 8 ohms

or greater. The RPA-6 external speaker output delivers 50W RMS

of power @ 8 Ohms.

CAUTION: Do not overload the RPA-6 with speaker loads less

than 8 ohms as this will degrade performance and may harm

the unit. Damage caused by improper use is not covered by the

warranty.

(21) LINE OUTPUT

These 1/4" (6.3mm) audio output is line level, post Master

Volume, designed for connecting to external recorders, mixers, or

amplifiers.

(20) (21)

FRONT PANEL CONTROLS & CONNECTIONS

(9) MASTER — DEPTH CONTROL

This controls the amount of feedback of the reverb reflection, i.e.

the number of reflections and the length of time before they

diminish in volume.

(10) POWER ON LED INDICATOR

Indicates when the unit is ON.

(11) MASTER — HIGH CONTROL

The control has a shelving response giving 15dB of boost or cut at

12KHz.

(12) MASTER — MID CONTROL

The control has a shelving response giving 15dB of boost or cut at

1.5KHz.

(13) MASTER — LOW CONTROL

The control has a shelving response giving 15dB of boost or cut at

100Hz.

(14) EFFECTS SEND

This line level output can be connected to external recorders,

amplifiers, or effects processors. The signal is a mix of the

channel inputs determined by each Channel Gain control.

(15) EFFECTS RETURN

This input can be used to return the effected signal into the RPA-6

or it can be used as an auxiliary input. The input signal can be

adjusted by the Master Volume and the unit the return jack is

connected to.

(16) TAPE IN AND TAPE OUT

The Left and Right TAPE IN allows cassette recorders or CD

players to be added to the Main output. The RECORD OUTPUT,

with TAPE RCA jacks, provides signal output to a cassette deck or

home audio equipment.

(14) (15) (16)

2.5A

SPECIFICATIONS

The specifications above are correct at the time of printing of this manual. For improvement purposes, all specifications for this unit,

including design and appearance, are subject to change without prior notice.

AMPLIFIER AND SPEAKER

Power ............................................................................................................................................................................100W RMS @ 4 Ω

S/N Ratio ........................................................................................................................................................................................ >115dB

THD Power output, 20Hz to 20KHz ................................................................................................................................................. <0.1%

Speaker .................................................................................................................................................................................................8 Ω

Tweeter type ................................................................................................................................................................Compression Dome

Woofer ................................................................................................................................................................................................... 10"

FREQUENCY RESPONSE (Mic input to output)

Line level o/p @ +4dBu into 600 Ω..............................................................................................................................20Hz- 20KHz ±3dB

Power amp o/p 1 watt into 8 Ωper side .......................................................................................................................20Hz- 20KHz ±3dB

SENSITIVITY @ LINE OUTPUT +4dBu with Master and Channels controls set to MID

Mic/Line .......................................................................................................................................................................................-54/-24dB

Tape in................................................................................................................................................................................................. -6dB

Max Input Level XLR ........................................................................................................................................................................... -9dB

Max Input Level 1/4" ........................................................................................................................................................................ +22dB

CHANNEL EQUALIZATION

Low EQ .................................................................................................................................................................................100Hz ±15dB

Hi EQ .................................................................................................................................................................................... 12KHz ±15dB

MASTER EQUALIZATION

Low EQ .................................................................................................................................................................................100Hz ±15dB

Mid EQ ................................................................................................................................................................................ 1.5KHz ±15dB

Hi EQ .................................................................................................................................................................................... 10KHz ±15dB

MICROPHONE PREAMP E.I.N. (150ohm Terminated, max. Gain) ............................................................................................ -102 dBm

POWER REQUIREMENTS ................................................................................................................... 100-120, 220-240 VAC, 50-60 Hz

FUSING............................................. 5x20mm glass type, 3.5A/250V for 115VAC, and 2.5A/250V for 230VAC operation, fast-blow fuse

DIMENSIONS (H x W x D) ....................................................................................................... 21" x 15.5" x 15.5" (53.3 x 39.4 x 39.4cm)

WEIGHT ............................................................................................................................................................................ 55lbs. (24.9 Kg)