Time Travler manual 2003
WT-390 Time Traveler
Bass Guitar Amplifier
Owner’s Manual
Congratulations on your purchase of the Eden Time Traveler Bass Instrument
Amplifier. You have purchased what we feel is one of the finest bass amplifiers
in the world. The Time Traveler produces 330 watts of pure power into 4 ohms
(180 watts into 8 ohms) with 3db of dynamic headroom. The new pre-amp.
Section, with its familiar Eden enhance control, and powerful new 3 way tone
control system are coupled to a studio quality compressor. The new Auto Booster
for low and high frequencies, along with a mid shifter, tone bypass, selectable DI,
selectable distortion, and a gentle auto-compression circuit allow 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.
Thank you for choosing Eden. Please take the time to review this manual and to
send in your warranty registration card.
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 a sound source and loudspeakers
or headphones, 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. DO NOT place your ears next to the speakers. If you
experience any discomfort or ringing in the ears or suspect hearing loss, you
should consult a health care professional.
Please complete for your records:
Date of Purchase: __________________________
Model: ___________________________________
Serial Number: _____________________________
Dealer: ___________________________________
Input Jacks – Designed to accept a
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.
standard ¼ inch mono phone plug. For best
results use a high-quality shielded cable to
connect your instrument to the amplifier.
Both inputs are buffered and will handle
standard, high level and piezo input signals.
They can be used simultaneously
Tone Control Section
Mute switch – Mutes all outputs except
you to boost or cut the tone at the desired
frequency. The spacing allows the controls
to interact smoothly and musically.
the tuner output. The indicator lights when
Mute is on.
Tone Control – These three controls allow
D.I. Selector - Selects the D.I. send in either
the Pre or Post tone position.
Bass – This traditional shelving tone control
Input Gain Switch – By pushing the Gain
provides 15 dB of boost or cut at approx. 30
Hz. The control is flat in the 12:00 position.
switch in, you engage a +10db gain Boost.
For low gain instruments use the Gain
switch in the high Gain position.
Hi Gain Indicator LED– Lights to indicate
that the unit is in the high gain position.
Warm Switch- This switch engages the
positive half wave tube style distortion circuit. The
distortion effect is increased by adding more
input gain.
Warm Trim- Located behind the front
panel . Use a small screw driver to adjust the
level of the effect.
Gain Control – Regulates the first gain
stage of the preamplifier and controls the
amount of signal available to the system.
Clip Indicator – Flashes to indicate
clipping anywhere in the system. This
should never be lit up.
Compressor Control- This adjusts the
threshold level of the compressor. The ratio is
fixed at an optimum point for Bass reproduction.
Mid Range Control- This covers the central
portion of the sound envelope and can be critical
to getting your sound right. The body of the Bass
sound is in the mid range.
Mid Shift Control – Provided to shift the
midrange control from low mid (550Hz) for
general playing and recording to the high
mid position (2.2K) for Rock and more
aggressive tones.
Tone Bypass Control– Located beneath
the tone control. A great tool for recording.
This bypasses the tone section only and
does not effect the boosters or the
Treble – This is a traditional shelving-type
tone control. It provides 15 db of boost or
cut. The knee of the filter is at approximately
2KHz. The control is flat at the 12: 00
Master Level Control – Adjusts overall
system output and stage loudness.
Compressor Indicator – Lights to
indicate that the signal has crossed the
threshold of the compression circuit and that
compression is taking place.
Compressor Bypass – Turning the
Compressor Control off will disengage the
Enhance Control – Called the “Magic
Headphone Jack – It accepts a standard
¼ stereo or mono headphone plug. It can
also be used as a Master output send to
slave another amplifier.
Output Limit Indicator – Lights to
indicate activity of the power amplifier
limiting circuit, which protects the speaker
system from severe distortion. This LED
Knob” by some, this complex control
indicates that the amplifier has reached its
maximum output level.
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 switch light can
be on even if the fuse is blown The
light in the switch may flicker depending on
local voltage conditions. This is normal and
nothing to be concerned about
Speaker On/Off Switch- This switch
turns off the loudspeaker out put jacks .
Combination Power Cord Jack and
Fuse Holder – The removable power cord
is attached here. Pulling the holder out of
the top of the power inlet accesses the fuse
carrier. Your unit was shipped with a spare
fuse inserted in the fuse carrier. USE ONLY
REPLACMENT. Models come with a holder
marked (FUSE) they are factory configured
for 100/120/ 230/240 only and must be
adapted by a service tech for any voltage
change. The standard fuse for U.S. use is
(5) Amp slow blow or time delay.
Do not use fast blow fuses.
EQ/pre-master signal to a recording or
sound reinforcement mixing console. This
output is designed to allow use with
phantom powered systems.
D.I. Level – Controls the level being sent
from the XLR balanced output jack.
Ground Lift Switch – This switch lifts the
ground within the balanced output system to
allow you to eliminate excessive noise when
connected to external systems.
Stereo Aux. Input - The standard ¼
mono jack is designed to accept the signal
from an external source such as a CD or
cassette player, drum machine, synth.
module, etc. The signal is summed prior to
the master volume control. The signal
enters the system before the tone controls.
These jacks can also be used to return a
studio cue signal, allowing the Time Traveler
to provide you with your own headphone mix
in the studio.
Amplifier Break Link-These are provide
to break the signal chain at the input to
the amplifier. This can be used as an
insert point or control point for the final
Tuner Out Jack – This standard ¼ inch
jacks and a NL-4 connector. The jacks are
wired in parallel. The total speaker
load impedance should not exceed 4 ohms.
jack is designed to provide a pre-gain signal
for connection to a tuner. It can also be
used to provide pre-tone signal to other
devices such as a direct box or console. The
signal is 2X input.
Amplifier Power Rating:
Cooling System – Your amplifier features
Amp Outs – These consist of two ¼ inch
350 Watts RMS @ 8 Ohms
405 Watts RMS @ 4 Ohms
550 Watts RMS @ 2 Ohms
Mono Pre Tone Effects Send/Return –
These standard ¼ jacks allow you to
send and receive your signal to and
from external devices. The effects loop
is positioned post (behind) the
compressor before the enhance control
and the tone section.
Recording Out – This fully balanced XLR
output allows you to send a pre or post-
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. The system also
features a high temperature thermal safety
system which will activate an AGC circuit if
the operating temperature goes above 190
degrees F. This circuit will automatically
turns down the output of the system in the
event of overheating. It will automatically
reset itself to full power as soon as the unit
cools down to a safe operating temperature.
Usually it takes from 2 to 5 minutes before
the unit will begin to operate normally again.
(Note: the D.I. will continue to operate
normally even when the amplifier is in
thermal shut down. Only the stage sound
will be lost.)
ISSUES – Your amplifier should always be
placed for operation away from sources of
moisture or heat. Care should be taken not
to obstruct the ventilation holes on the
bottom and sides of the unit. In the event of
thermal shutdown, you should eliminate the
cause of the thermal problem (poor
ventilation, speaker loads lower than 4
ohms) immediately. The supplied rack ears
can be used to install your amplifier in a
conventional equipment rack for protection
during transportation.
Time Traveler requires at least 10 Amps of
correctly wired alternating current for proper
CONNECTIONS – All line connections
(everything but the speakers) should be
made with high-quality shielded cables. The
use of speaker cables for line connections
will result in excess noise. Speaker
connections should be made with highquality 16 gauge or larger unshielded
speaker cables. We recommend 10 or 12
gauge cables. The use of shielded line or
instrument cables for speaker connections
can damage your amplifier. The speaker
cable should be as short as possible.
TURN ON – We recommend turning your
system on with the master volume control
set to its minimum position. This will prevent
any unexpected signal from being sent to
your speakers.
SETTING YOUR LEVEL – Effective use
of the gain control will ensure the best
signal-to-noise ratio. The Compressor, and
EQ Clip indicators are all provided to assist
you in setting your level correctly. You
should begin the process with your master
control set to a low, or off position, and your
tone controls set flat. While playing your
instrument normally, bring the gain control
up to about 11:00 . Set the compressor light
so that it winks on the peaks that result from
your strongest normal attack. This will
generally show up most on your lower
strings. If more compression is desired,
increase the control so the compressor light
comes on more readily. Having set your
initial level, you are now ready to proceed
with setting up your tone controls. Since
tone adjustments have an impact on the
overall preamp gain level, you may well
need to return to the gain control and repeat
this process once you have completed your
EQ adjustments.
Begin with all tone controls set flat and with
the Enhance Control set to its minimum
position. After setting your Gain level, bring
the Master control up to a moderate level.
Slowly bring the Enhance control up, playing
as you make each adjustment. Many
players find that there is a small amount of
boost on the Enhance control that will get
them very close to the sound they are after.
If it doesn’t, return it to its minimum or 0
Overall bass and treble adjustments can be
made with the Bass and Treble controls.
These controls cover a fairly broad range of
the frequency spectrum. Many players use
these controls to compensate for acoustic
situations, relying on the Enhance and
Parametric controls to achieve their basic
sound. Adjusting the mid range control will
bring you either more up front in the mix or
more in the background
The frequencies that you will need to boost
or cut are dependent upon your instrument,
playing style, speaker cabinets, and venue.
Extreme settings of boost or cut are unlikely
to be necessary or helpful.
We are frequently asked to provide
suggested settings for various styles of play.
We have discovered though, that most of
our endorsers tend to set their EQ generally
flat, using varying amounts of the Enhance
Control. We encourage you to experiment
with different settings to obtain the sound
you desire. We have included some EQ
panel diagrams at the back of this manual to
help you record your settings.
Clip Light – This indicator will flash if
clipping occurs in the EQ section of the
preamp. This can be remedied by
decreasing the amount of boost in the EQ
section or by decreasing the Gain control.
This light should never be on while playing.
Other EQ Considerations – If you find
yourself running out of amplifier headroom,
cut a little in the lower frequencies, which
require the most power from your amp.
Two areas are a frequent source of
frustration for bassists trying to achieve their
sound: frequency masking and frequency
enhancement. Frequency masking occurs
when other instruments (particularly cymbals
and electric guitars) obscure the important
upper harmonic content of your sound. As a
result, you find that the EQ settings that
were so perfect at home lack definition in a
live setting. On the other hand, the stage
settings that worked so well sound harsh
and/or thin in the absence of other
instruments. Frequency enhancement
results from cabinet placement and room
acoustics. A cabinet placed on the floor will
have the lower frequencies boosted by
about 3 db. Placement against a wall adds
another 3 db. A corner adds 3 db more.
Consequently you may find a surprising
boominess to your sound. Certain qualities
in the room itself can also enhance the lower
frequencies, further contributing to this
problem. Frequently this effect is more
noticeable in the audience than it is on
stage. Compensating for it may result in a
stage sound that may seem a little thin.
However the sound is actually quite full out
in front.
Suggested Speaker Systems – Your
speaker system, should be chosen to
accommodate the characteristics of your
amplifier and your predominant application.
If you will only be using one cabinet per
side, a 4 Ohm model will draw the most
current from your amplifier. If you will
generally be using two cabinets, they should
both be 8 Ohm models so their combined
impedance will be 4 ohms. If you are
uncertain about your future needs always go
with the 8 Ohm speaker option so that you
can add another speaker later if you need
Headphone Jack as a Line Driver – On
some occasions (such as high-volume or
outdoor situations) it may be desirable to
use the Time Traveler along with an
additional power amplifier and added
cabinets. A standard shielded instrument
cable may be used to connect from the
headphone jack of the unit to an unbalanced
input of a standard power amplifier. This will
provided a signal that is post EQ and master
volume controls, allowing the entire system
to be controlled from the Time Traveler.
Using the Time Traveler With out
Speakers -This amplifier is designed to be
used safely with headphones only, without
the loud speaker plugged in. No harm will
result from using the amplifier in this fashion.
This allows the use of the unit for practice
with headphones and as a preamplifier with
other amplifiers.
Your Eden amplifier has been designed to
require minimal routine maintenance.
Attention to the following areas will ensure
optimum performance of your amplifier.
Contact Point Cleaning – One of the
weakest links in most bass amplification
systems are the solderless connection
points where instruments, speaker cabinets,
effects, and other devices are connected to
the amplifier. (The most vulnerable of these
types of connection is the jack on your
instrument). In addition to contamination
from airborne pollutants, these points are
frequently assaulted by connectors that
have picked up debris from dirty stages,
cases, etc. These points should be cleaned
regularly with a cotton swab soaked in
denatured alcohol or a commercially
available de-oxidant. Frequent cleaning of
the plugs on your cords is also
Dust Removal – You should periodically
inspect the ventilation openings on the top
and sides of the unit to ensure that they
have not become blocked by accumulated
dust. Vacuum the openings to remove any
dust buildup.
Service – In the event of amplifier
malfunction, or questions about your
unit’s operating features, you should
contact your Dealer. For more
information or to obtain a Return
Authorization number and instructions
for factory returns, please contact our
customer service dept.
(847) 949-0444
(847) 949-8444(fax)
CR Eden Div. US Music 444
Courtland Rd., Mundelein, IL
Please call the USM Customer
Service dept. At 1-800-USSOUND
(1-800-877-6863) extension 5120
Please ship Authorized
Returns for service to:
Eden Electronics
P.O. Box 338
115 2nd Street
Montrose, Minnesota
(763) 675-1890
[email protected]
Web sight
Eden Electronics
C/O U.S. Music Corp.
444 E. Courtland Rd.
Mundelein, IL 60060
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