Eden Nemesis Silver Series NA120 Manual de usuario

Nemesis Silver Series

Owners Manual

NA120 / NA80

Bass Guitar Amplifier Chassis

For Silver Series Combos

Covering Models

N10S(E), N12S(E) N15S(E), N28S(E)

3/15/2005 U. S. Music Corp.

NA120 / NA80

Bass Guitar Amplifier Chassis

For all Nemesis Silver Series Combos

Models N10S(E), N12S(E) N15S(E), N28S(E)

OPERATION MANUAL

Publishing Date 3-15-05

Foreword

Congratulations on your purchase of your new lightweight Nemesis

Silver Series Combo 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 the Nemesis Silver Series line such a great value

that you really can't afford not to own one.

This manual will cover all versions of the Nemesis Silver Series

Combos. These include the N10S(E), equipped with the NA80 amplifier

unit, and the N12S(E), N15S(E), and N28S(E) models, which are

equipped with the NA120 amplifier unit. The (E) version is the Export

version; however, both units are identical in operation.

The NA80 has 90 watts @ 8 Ohm, 120 watts RMS @ 4 Ohms and the

NA120 has 130 watts @ 8 Ohms, 170 watts RMS @ 4 Ohms. Both have

+3dB of headroom and feature large passive cooling systems with built-

in thermal safeties.

The Nemesis Silver Series products group is a revolution in bass guitar

equipment and manufacturing technology. We have taken FET power

device technology, computer-optimized circuit design, and years of

research and testing to evolve our latest electronics package: the

NA80/120. This is a great step forward in performance, reliability, and

value.

We build the Nemesis Silver Series enclosures from void-free, high

quality plywood. The chassis is mounted with 6 mounting bolts to insure

reliability under the most difficult conditions.

The Nemesis Silver Series Combo line is the result of our research and

development in combining high performance and compact size, together

with lightweight construction and great value. It offers a great

performance value for the bass student, teacher, and the working bass

player alike. A skilled craftsman needs good quality tools that won't let

him down on the job, and so does a good musician.

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 amplification and/or

additional loudspeakers 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 Nemesis Series 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.

GENERAL FEATURES

Your Nemesis Silver Series Combo has all the following features: a 90

to 130 watt FET power amplifier @ 8 Ohms, dual channels, heavy duty

passive thermal cooling, extension speaker compatibility, automatic

thermal protection circuit, compressor/limiter with in/out switch, aux

channel with tone and level controls, enhance control, 3-band tone

control, speaker on/off switch, headphones jack, aux speaker output, full

D.I. with ground lift switch and level control, effects loop, all plywood

enclosure, and powerful, great sounding Eden designed loudspeakers.

SET UP AND GETTING STARTED

Before turning on your Nemesis Combo, you need to do a few things

first. If your unit was shipped directly to you from a dealer, check

carefully for hidden freight damage before you attempt to operate the

unit. If you find any damage, notify your dealer and the freight line

immediately. If you picked up your unit from your dealer, it was probably

set up and tested out already. To be safe, we suggest that you go

through the set up now.

INITIAL SET UP

Before you plug in your unit for the first time, please do the following

things. First, turn the power switch to the off position. Check the back of

your unit for the correct voltage notation for your country of operation.

Once you’ve ensured correct voltage, set the master volume control to

minimum (0). Set the tone controls to the center position (12:00 or 0).

Turn the enhance control to the minimum position. Set the gain control

to approximately the 10:00 position. Set the compressor in the on

position. On the front of the unit, set the internal speaker switch in the on

position. This will set your amplifier up flat and with the auto compressor

operating. Next, plug in the power cord to the AC inlet on the back of the

unit. Use only a safe grounded receptacle for proper

operation at the

correct voltage for your country. Double check to make certain your

amplifier is set for the correct voltage in your country.

Once you’ve completed the steps above, you can plug in your bass and

turn on the unit. Turn the master up until you reach a comfortable sound

level and we will go through the tone controls and other features.

OPERATION & DESCRIPTION of CONTROLS

INPUT JACKS

The input jacks on both channels will accept most bass guitar output

levels. If you have a dual-battery bass with output in excess of +10dB,

you will probably have to turn the output of your bass down to avoid

clipping the input. The jacks will accept most passive and active basses.

The aux jack will accept RCA connectors so you can connect a CD or

tape player.

LEVEL CONTROL Aux Channel

This control regulates the aux channel and controls, the level sent to the

output master gain control. You can use this channel to plug in a second

instrument or a CD/tape player – a great feature for students and

teachers. For most applications, you should set the control between 9:00

and 3:00 to match your instrument and playing style to the amplifier. The

CD/tape player inputs are RCA-style inputs.

TONE CONTROL Aux Channel

This is a tone balance control. It shifts both high and low frequencies at

the same time. It acts rather like an audio teeter-totter. It allows a quick

EQ of the entire audio spectrum on one control, and is highly effective

for matching different recording formats and balancing instruments.

GAIN CONTROL Main Channel

This control regulates the first amplification stage and controls the gain

of the first stage in the overall system. The compressor automatically

tracks the input level and follows the gain. This is a fixed-threshold type

compressor. You control the compressor threshold by setting the gain

higher or lower; depending on how much compression effect you want.

The compressor is also provided with a bypass switch to defeat the

compressor operation if desired. For most instruments, you should set

the control between 9:00 and 3:00 to match your instrument and playing

style to the amplifier.

-12dB PAD Main Channel

Some of the dual battery powered bass guitars have unusually high

output levels. If you own one of these basses, it may be necessary to

engage the -12dB pad in order to properly match correct signal levels

with this unit. The pad is engaged by pushing in the pad switch. This will

reduce the input signal level by approximately –12dB.

ACTIVE LIGHT and COMPRESSOR ON/OFF SWITCH Main channel

The compressor on/off switch engages and disengages the compressor.

Pushing in the compressor switch activates the compressor. The light

indicates the best spot to operate the amplifier. When the compressor is

engaged, the light indicates compressor operation. When the

compressor is bypassed, it indicates the sweet spot for operating the

amplifier.

ENHANCE CONTROL Main Channel

This is a great sounding feature, seldom found on amplifiers in this price

range. The enhance control is a complex tone pre-shaping curve that is

set up to optimize your bass sound. It is designed to boost the low

frequencies and upper midrange, while at the same time reducing the

lower midrange frequencies. The enhance control is a quick and easy

way to a quality bass tone. To try it out, set all the other tone controls to

flat. Then rotate the enhance control between 9:00 and 11:00 for the full

effect. This range is typically the best area for operation. The enhance

can also be used with the other tone controls.

MAIN TONE CONTROL 3-BAND EQ Main Channel

The main tone control section is a 3-band tone equalizer. The audio

spectrum is divided into three bands, the bass, mid, and treble. The

bass and treble are shelving type filters and the midrange control is a

band pass type filter. These controls give you a broad general control

range for shaping your tone.

MASTER LEVEL CONTROL

This control sets the final output level to the amplifier. For general

operation, the control will normally be set between 9:00 and 3:00.

HEADPHONE OUTPUT/ Aux. Line Out

This jack provides the output for headphones that are used for

practicing. If you switch off the internal speaker, you can use your

amplifier to rehearse with just the headphones. It can also be used as an

aux line level output to run additional amplifiers. This output will function

as the final master control and the additional amplifiers will be slaved to

it.

D.C. INDICATOR

This indicates that both the D.C. power supplies are operating properly

and the amplifier is turned on.

MASTER OUTPUT LIMITER

Your unit has a final limiter/compressor at the output, and it will cause

the amplifier to soft limit at its maximum output. This is a seamless

feature and does not have an output indicator on the panel. It cannot be

defeated.

SPEAKER ON/OFF SWITCH

This switch turns off your internal and external speakers for quiet

practicing with the headphones.

BACK PANEL FEATURES

AC POWER INLET/ FUSE

This is where you plug in your AC line cord. This is also where the fuse

is located. The fuse for US operation is a 2 amp. 5x20 MM slow-blow

type fuse. In Europe, use a 1 amp @ 240v slow-blow fuse and the

appropriate AC connector for your country. Make certain that your unit is

set for the correct voltage for your country.

Replace your fuse only with the same size and type.

The unit is set at the factory to operate at the correct voltage for your

country. It can easily be changed from the original factory setting to

operate at 100/115/220/230-240VAC. You can change from 230v to

115v by turning over the fuse holder and doubling the size fuse for the

115v operation. Setting the unit for 220VAC and 100VAC operations

require that a jumper be moved in the power supply PC board inside the

unit. Please refer this to a qualified service technician only.

There is

serious risk of damage to the unit and potential injury to yourself if

this is done incorrectly.

INTERNAL THERMAL PROTECTION SYSTEM

Your unit is fully protected by an automatic thermal safety system that

meets the UL-813, CSA, and CE standards for safety. If your unit is

played too hard and too long and it accumulates too much heat load, or

if an amplifier malfunction occurs, the thermal safety system may

engage.

If this happens, your unit may temporarily go into the thermal standby

mode. This is a normal operation of the safety system. In the standby

mode, the unit will remain operating and all the pilot lights will stay on,

but the audio output to the speaker will be shut down until the unit

reaches a safe operating temperature. The D.I. will continue to operate

during the thermal standby. Your unit will come back on automatically in

1 to 3 minutes and operate normally. If the unit continues to cycle

through thermal shutdown, you should contact your local dealer for

service help.

HEAVY DUTY PROFESSIONAL USE

The Nemesis Silver Series Combos are primarily designed for small

clubs and rehearsal venues. The Nemesis Silver Series Combos run

well above normal combo loudness levels. Your unit is designed to be

played hard and to hold up well. However, it is not designed to replace,

or to perform as loudly as, the more powerful Eden separate systems. If

you find you are pushing your amplifier so hard that you are

encountering thermal standby and shut down on more than a very

occasional basis, you are pushing the unit well above the intended

operating parameters and should consider stepping up to a bigger rig.

EXTERNAL SPEAKER OUTPUT

This jack allows you to use an external extension cabinet. We

recommend an 8 Ohm extension speaker. Leave the internal speaker

switch in the on position when using the extension cabinets.

Do not

exceed a total minimum load of 4 Ohms.

SPEAKER ON / OFF

This switch turns off the internal loudspeaker and any extension

cabinets. Make certain that this switch is in the on position if you want to

play your unit and hear it on the internal loudspeaker.

EFFECTS LOOP

This is a line level output and return; it is a series circuit. This is the

place to put your line level effects. You can also use the effect send as

an aux line level output. The circuit breaks on the return jack.

DIRECT OUTPUT

The D.I. output is used to connect your unit to P.A. systems and

recording consoles. This is adjustable from microphone level to a high

line level signal. The level control sets the amount of signal level that

appears at the output of the XLR connector. The ground lift is used to

reduce noise when plugging into another system. Switch the ground lift

back and forth to determine the lowest noise/hum position. This is a fully

balanced line output. Pin 2 is + or hot.

SETTING UP YOUR OWN SOUND

Start by setting the pre-amplifier tone controls to the flat position. Set the

enhance control to minimum. Set the master volume control to 0. Set all

the tone controls to 0. Plug in your bass and turn on your unit. Set the

gain control to around 10:00 and move the master up to around 11:00,

or to a comfortable listening level.

Try the enhance control first, rotate it while playing, and you may find

that this gives you the sound you are looking for.

Next, try the main 3-band tone control. Start with the treble control, work

down to the midrange control, and then adjust the bass control. Be

careful about using large boosts, particularly in the bass range. This can

cause increased distortion at loud playing levels and can limit overall

output level if carried to extremes.

To sum things up, you will always have the best results creating a great

bass tone around the natural tone of your instrument. Use the minimum

amount of EQ required to get your sound.

SPEAKER ENCLOSURES

All speaker enclosures have a passive tweeter protector in the crossover

to protect the tweeter from heavy clipping or unusually large input

signals. This protector bulb will light up if it is engaged. It is located in

the speaker box and is attached to the crossover. To service this part,

should it ever become necessary, the grill must be removed along with

the speaker closest to the crossover.

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