Nady Systems PAS-250 User Manual

MaxTower™ PAS-250

www.nady.com

Thank you for purchasing the NADY MaxTower™ PAS- 250

PA 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

MaxTower™ PAS-250 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.

Thank you for selecting Nady Audio to

meet your Portable PA needs!

1

FEATURES

• 250W RMS class D amplifier provides high efficiency
and cool operation

• Eight 3” line array high-excursion piston speakers

• 2 XLR-1/4” combo inputs with independent control and
10dB attenuator switch

• Selectable 48V phantom power for condenser

microphones

• Constructed of durable, lightweight polymer composite
material

• Balanced XLR output with independent level control
connects to optional powered subwoofer
(sold separately)

• Separate EQ control on each channel

• DSP Reverb with Level controls for each channel

• Main level control with mute switch

• Tripod speaker stand and nylon carrying bag included

for easy setup and transport

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

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

INSTALLATION ............................................................................. 3

FRONT PANEL CONTROLS & CONNECTIONS ...................................... 6

REAR PANEL CONTROLS & CONNECTIONS ........................................ 7

MXTS-8 POWERED SUBWOOFER ...................................................... 8

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

Date of Purchase _________________________________________
Dealer’s Name ___________________________________________
City ___________________________________________________
State __________________________________________________
Zip ____________________________________________________

Model # ________________________________________________
Serial # ________________________________________________

2

IMPORTANT SAFETY INSTRUCTIONS

Your MaxTower is made of a very durable polymer composite material. However, extra care should be
taken to protect the finish and speakers. These simple tips will help reduce wear and tear on your

MaxTower.

1. Read all instructions before using.

2. Avoid direct contact with the speaker. Care should be taken to avoid damage to speakers.

3. Do not use or store around excessive moisture.

4. At very high volume this product may be capable of producing sound levels that could cause hearing
damage. Do not operate at uncomfortable levels for prolonged periods. If hearing loss or ringing in ears
in experienced, consult a physician.

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

6. Keep away from heat sources such as radiators, heat vents, and other devices (including amplifiers)

that produce heat.

7. The MaxTower should be connected to a power supply described in the operating instructions or as
marked. Replace fuse with correct type, size, and 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 has exceeded the maximum rating, and (3) never be left plugged into the
outlet when not being used for a long period of time.

9. This product should be serviced by qualified service personnel if:

• The power supply cord or the plug has been damaged.

• One of the speakers has been damaged.

• There has been excessive exposure to rain.

• The MaxTower does not appear to operate normally or exhibits a change in performance.

• The unit has been dropped, or the enclosure damaged.

• Do not attempt to service the product beyond what is described in these instructions. All other repairs
should be referred to qualified service personnel.

• Clean only with damp cloth.

• Use only with the supplied Nady stand.

• Units designed with Class-I construction (like the MaxTower) must be connected to an outlet with a

grounded connection.

STATEMENT OF RoHS COMPLIANCE

The included electronic parts and components are covered by the European Union Removal of Hazardous
Substances directive 2002/95/EC (RoHS). This directive seeks to eliminate the toxic substances released
during manufacturing processes to ensure that disposed of materials do not pose health risks. Considered
toxic substances are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB)
and polybrominated diphenylethers (PBDE). Lead is used together with tin in solder connections to reduce
the melting point of solder. Lead-free solder requires higher soldering temperatures which in turn places
greater thermal stress on components.

The MaxTower complies with RoHS directives and uses components that are certified RoHS compliant.

3

INSTALLATION & OPERATION

Please read this manual thoroughly before using.

INSPECTION

Your MaxTower was carefully packed at the factory in packaging designed to
protect the unit 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.

CONTENTS

• Instruction manual

• MaxTower PAS-250 (verify unit’s serial number is same as shown on
shipping carton)

• AC power cord

• Tripod speaker stand

• Nylon carrying bag

SETTING UP

The MaxTower and stand fit securely in the supplied padded bag.

• Open the bag and remove the stand.

• Loosen the knobs, set up the stand, select height.

• Insert the metal pin through the stand.

• Tighten the knobs to secure.

• Remove MaxTower from the padded bag.

• Place MaxTower on stand securely through bottom mounting hole.

• Plug the AC power cord into the rear panel jack (11), then power cord
into a nearby power outlet. The MaxTower has an internal power
supply and is designed to operate from an external AC source (Power
Range: AC l00~240V, 50/6OHz (+/— 10%). Make sure that the unit is
turned off before connecting to the AC power source to avoid possible
loud transients that can damage your speakers or your ears, especially

when monitoring with headphones.

• Turn on unit with Power ON/OFF Switch (13) on rear panel. The
Power On LED (1) will light.

• Plug in mic or instrument, make any necessary adjustments, setting
channel gain, EQ, and reverb.

4

• Master volume (2) controls the level of the main power amplifier.
NOTE: The MaxTower can be set to very high sound levels. To protect
the system from damage, included is an active protection circuit. At high
sound levels this active protection will lower the output until the volume is
adjusted.

CONTROLS AND CONNECTIONS

• The front panel has 2x combo XLR-¼ (8) input jacks for the following
inputs: ¼” instrument level, ¼” line level, XLR dynamic microphone, XLR
condenser microphone, & XLR line level

• 10dB attenuation pad button (7) next to each input jack to best
match the level of each input source.

• Phantom power button (9) switches on and off 48VDC phantom
power to both channels simultaneously for using a condenser microphone
with an XLR plug. NOTE: Sending 48VDC phantom power to the XLR plug
of a dynamic microphone will not typically harm the microphone. However
to avoid possible damage, we recommend that you verify this for any
specific dynamic microphone prior to using phantom power.

• Gain adjustment knob (6) adjusts the input sensitivity. NOTE: The
gain knob can be used to avoid distortion and feedback with high level
signals. It is best to begin with the gain lower to avoid damaging the
power amplifier section.

• Reverb knob (5) is used to control the level of reverb for each channel.

• EQ knob (4) adjusts the low & high frequencies. Top center (detent
position) enables flat operation (no EQ effect). Turning the knob to the
right increases the level of treble and reduces the bass level. Turning the
knob to the left increases the bass level and reduces the treble.

• Mute button (3) mutes both channels. A small red LED is on when the
mute is active. The mute button shuts off the signal to both the internal
power amplifier and to the rear line output, so that inputs can be swapped
or instrument or mic adjustments can be made without unwanted noise.

5

(1) POWER ON LED

(2) MAIN LEVEL CONTROL
Summed output volume adjust

(3) MAIN MUTE SWITCH
For quick removal of all audio

(4) EQ CONTROLS (CHANNELS 1 & 2)
Clockwise increases treble
Counter-clockwise increases bass

(5) REVERB LEVEL (CHANNELS 1 & 2)
Controls level of reverb for each
channel

(6) CHANNEL INPUT GAIN
Increase/Decrease
channel input sensitivity,

depending on type of input source

(7)10DB ATTENUATOR
Decreases level of individual channel

gain when pressed

(8) COMBO XLR – ¼” INPUT
For proper connection of instruments,
microphones, and other audio sources

(9) 48V PHANTOM POWER
Supplies additional +48VDC for

powering condenser microphones

6

(10) LINE OUTPUT LEVEL
Control Adjusts volume of
XLR line output

(12) BALANCED XLR LINE OUT
With separate level control,
for connecting to external
powered subwoofer or
additional audio source

(11) AC CORD INPUT

(13) ON/OFF SWITCH
Built-in internal 120V/240V
switching power supply

7

MXTS-8 POWERED SUBWOOFER

ALSO AVAILABLE...

For best sound with added bottom end…

MXTS-8

Powered Subwoofer

for the MaxTower™

The MXTS-8 Subwoofer is designed to work
seamlessly with the MaxTower™ PA system
to deliver optimal low-frequency impact. The
8” woofer produces deep, strong bass for
keyboards, kick drum, bass guitar, and other
instruments that play in lower ranges. It
connects to the MaxTower™ with a single mic
cable.

• 60 Watt maximum output

• Single 8” woofer

• XLR and ¼” line inputs

• Constructed of durable, lightweight MDF

wood

• Bracket for top mounting MaxTower™ with
MTMP-8 mounting pole

8

SPECIFICATIONS

AMPLIFIER AND SPEAKER SYSTEM

POWER. ....................................................... .250W RMS @ 6 Ω, 1%THD at 1kHz

S/N RATIO ..........................................................................................56.5dB

THD ................................................................≤0.17% @1kHz ≤0.63%@1kHz

SPEAKERS ................................................................................ 3” Woofer, 6Ω

FREQUENCY RESPONSE ............................................... 100kHz - 18KHz (±3dB)

SENSITIVITY @ INPUT & OUTPUT

• Mic/Line ............................................................................................ -37dB

• Max Input Level XLR ........................................................................ .-16dBv

• Max Input Level 1/4” ......................................................................... +9dB

• Max Output Level XLR ...........................................................................26dB

EQUALIZATION....... ..Single knob, clockwise increases treble; counter-clockwise increases bass

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

DIMENSIONS (H X W X D................................8.6” x 35.8” x 3.5” (21.8cm x 90cm x 9cm)

WEIGHT ...........................................................................20bs. (8.8 Kg)

The specications above are correct at the time of printing of this manual. For improvement
purposes, all specications for this unit, including design and appearance, are subject to
change without prior notice.

SERVICE FOR YOUR NADY AUDIO PRODUCT

Please do not return our product to the store where it was purchased. Nady Systems, Inc.
assumes the responsibility of keeping you a satisfied customer.

DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND WILL
ALSO VOID THE WARRANTY.

If factory service is required, please call our Service Department at 510/652-2411 or e-mail
[e-mail] for a return authorization (RA) number. Make sure the RA number is
clearly marked on the outside of the package. If unit is past the One Year Warranty, The Nady
Service Department will provide a quote for service or replacement. Please make sure a
cashier’s check or money order is enclosed (if not prepaid with credit card) with the shipment

to Nady.

If unit is within the One Year Warranty from purchase, please check Warranty terms for
further instruction before sending in unit.

Nady Systems will not repair nor be held responsible for any units sent without proper
identification and return address or RA number clearly marked on the package.

Nady Systems, Inc., Service Department, 6701 Shellmound St., Emeryville, CA 94608

For service, please ship units prepaid to:

9

ONE YEAR WARRANTY

Nady Systems, Inc. warrants to the original consumer purchaser that
your unit is free from any defects in material or workmanship for a

period of one year from the date of purchase. If any such defect is

discovered within the warranty period, Nady Systems, Inc. will repair
or replace the unit free of charge, subject to verification of the defect
or malfunction upon delivery or shipping prepaid to Nady Systems.

This warranty does not apply to defects or physical damage resulting
from abuse, neglect, accident, improper repair, alteration, or
unreasonable use of the unit resulting in cracked or broken cases or
parts, or units damaged by excessive heat, and does not apply to
batteries or damage caused by leaking batteries. This warranty does
not cover finish or appearance items nor items damaged in shipment
en route to Nady Systems, Inc. for repair. You must include proof of
date and place of purchase (i.e., photocopy of your bill of sale) or we
cannot be responsible for repairs or replacement. See Service section

for further instructions.

Any applicable implied warranties including warranties of
merchantability and fitness are hereby limited to one year from
date of purchase. Consequential or incidental damages resulting
from a breach of any applicable express or implied warranties are
hereby excluded. This warranty is in lieu of all other agreements
and warranties, general or special, express or implied and no
representative or person is authorized to assume for us any other
liability in connection with the sale or use of this Nady Systems’

product.

Note: Some states do not allow limitations on how long implied warranties last and do not allow
exclusion of incidental or consequential damages, so the above limitations and exclusions may not
apply to you. This warranty gives you specic legal rights, and you may also have other rights
which may vary from state to state.

International Customers: For service, please contact the NADY AUDIO distributor in your
country via the dealer from whom you purchased this product.

www.nady.com

6701 Shellmound Street | Emeryville, CA USA 94608

T 510.652.2411 | F 510.652.5075

www.nady.com

6701 Shellmound Street | Emeryville, CA USA 94608

T 510.652.2411 | F 510.652.5075