Eden NA320 User Manual

Nemesis

Owners Manual

NA320

Bass Guitar Amplifier

THE LEADER IN BASS AMPLIFICATION.

© 08/19/2005 by U. S. Music Corp.

Bass Guitar Amplifier

NEMESIS NA-320

OPERATION MANUAL

Publishing Date 08-19-2005

FOREWORD

Congratulations on the purchase of your new Nemesis NA320 Integrated
Amplifier System. All of us at Eden are totally committed to providing you
with the very best bass guitar systems in their class. Our goals are to offer
you the outstanding performance quality of a top-notch, professional bass
amplification system at a reasonable price point, and to make Nemesis
amplifiers the most musical and reliable Bass amplifiers available.

This manual will cover domestic and international versions of the NA320
Integrated Amplifier.

The NA320 delivers 200 watts RMS output @ 8 Ohms and 320 watts @ 4
Ohms, all with +3dB of headroom. This amplifier also features a
thermostatically controlled, active cooling system with built-in thermal
safeties.

You have purchased what we feel is one of the finest bass amplifiers
in its class. The pre-amplifier section, with its familiar Eden Enhance control
and powerful semi-parametric tone control system is coupled to a gentle
auto-compression circuit, allowing you to achieve a wide array of sounds.
This compact, rack mountable package houses modular circuits made with
superior components and designed for years of trouble-free service.

The Nemesis products group is the result of our quest for ultimate bass tone
and maximum reliability. Your amplifier was designed, engineered and
manufactured equivalent to aircraft vibration standards and housed in a
welded steel chassis with steel top to ensure maximum reliability. The
modular design allows quick repair in the field should such a need arise.

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The Nemesis line of amplifiers is the result of our research and development
in combining high performance and compact size. Just as a skilled craftsman
needs good quality tools that won't let him down on the job, so does a good
musician. We hope you enjoy the tool we’ve created for you. Have fun; play
low!

Please read this manual in its entirety before operating your new amplifier.
Failure to do so could result in misuse or damage. We’ve taken the time to
write it, which was a lot longer than the time it will take for you to read it.
Help us help you by taking a few moments to learn how to properly use your
new amp. You’ll be glad you did!

Please complete for your records:

Date of Purchase: __________________________
Model: ___________________________________
Serial Number: _____________________________
Dealer: ___________________________________

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CAUTION!

Your ears are your most important piece of
equipment. Unfortunately, they cannot be replaced
as easily as your other gear. Please take the
following warning seriously.

This product, when used in combination with
loudspeakers and/or additional amplification may
be capable of producing sound levels that could
cause permanent hearing loss. DO NOT operate at
high volume levels or at a level that is
uncomfortable. If you experience any discomfort or
ringing in the ears or suspect hearing loss, you
should consult an audiologist.

Thank you for your purchase of an Eden bass
guitar product. This unit has been designed and
constructed to give you years of trouble-free service.

Please take the time to review this manual

and to send in your warranty registration card.

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FRONT PANEL FEATURES

Input Jack – Designed to accept a standard ¼ inch mono phone plug. For

best results use a high quality shielded cable to connect your instrument to
the amplifier. The input is buffered and will handle standard passive, high
level active, and piezo input signals.

Gain Control – Regulates the first gain stage of the preamplifier and
controls the amount of signal available to the system.

Input Pad – Pull slightly on the Gain control to engage a –12dB pad. This
feature is useful when using a very high gain instrument.

Set Level Indicator – This light helps the user set the appropriate amount of
gain. When set properly, the indicator should light on your loudest/lowest
notes. We’ll go over this in more detail later in the manual.

Compressor Bypass Switch – This switch allows you to bypass the front
end Compressor/Limiter. The Compressor/Limiter in your unit is a fixed
threshold type. You adjust the Compression level by turning the gain control
up or down until you get the amount of compression you want. You may
find the bypass switch useful for getting that maximum punch when you are
slapping or popping hard.

Enhance Control – Called the “Magic Knob” by some, this complex
control simultaneously boosts the very low bass, upper middle, and high
frequencies while putting a dip in the lower middle frequencies.
It is flat when set to its minimum level (fully counterclockwise).

Semi-Parametric Equalizer – Allows you to dial in a specific frequency to
enhance or cut. This feature is especially useful for upright and acoustic bass
guitars that have a resonant frequency. Because we’ve included a bypass
switch, you can also use it to create a second tone that is available
instantaneously. (You’re welcome.) The frequency is adjustable from 40Hz
to 10KHz. The level can be adjusted +/- 15 dB. The control is FLAT when
the level control is at 12:00 position (straight up).

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Three Band Tone Controls – Divides the audio spectrum into three bands:
Bass, Mid, and Treble. The Bass and Treble controls are shelving type
filters. The Mid control is a band pass type filter. These controls give you a
broad general control of the tone shaping.

Master Volume – Controls the main stage sound level and the Head Phone
outputs.

Headphone Jack – Accepts a standard ¼ inch stereo or mono headphone
plug. It can also be used as a Master Output send to slave another amplifier.

DC Indicator – When lit, shows that the low voltage power supplies are
operating.

Mains On/Off Switch – This switch turns the system power ON or OFF.
The switch illuminates to indicate the presence of AC power present in the
chassis. This switch is prior to the fuse. The light in the switch may flicker
depending on local voltage conditions. This is normal and nothing to be
concerned about.

NOTE: The Mains Switch will illuminate even if the fuse is blown.
However, the DC Indicators will not illuminate if the fuse is blown.

IMPORTANT NOTE: When attached, the included lighted footswitch will

defeat the Front Panel controls for the Mute to Tune and Enhance Bypass
functions.

BACK PANEL FEATURES

Amplifier Power Rating:

RMS output (with +3 dB headroom):
200 Watts @ 8 Ohms
320 Watts @ 4 Ohms

Cooling System – Your amplifier features a thermostatically controlled fan,
which will switch on when the internal temperature reaches 130 degrees F.
In low volume situations (into 8 Ohm loads) the fan may not come on at all.

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