BASS 750
USER GUIDE
SWR • SCOTTSDALE, AZ • USA
IMPORTANT SAFETY INSTRUCTIONS
CAUTION: TO REDUCE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER OR BACK.
NO USER-SERVICEABLE PARTS INSIDE. PLEASE REFER TO A QUALIFIED SERVICE TECHNICIAN.
A. Read Instructions: All safety and operation instructions should be read before the product is operated.
B. Retain Instructions: The safety and operating instructions should be retained for future reference.
C. Heed Warnings: All of the warnings on this product and in the operating instructions should be adhered to.
D. Follow Instructions: All operating and use instructions should be followed.
E. Cleaning: Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a
slightly damp cloth for cleaning.
F. Water and Moisture: Do not use this product near water; for example, near a swimming pool, wet basement, and the like.
G. Accessories: Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing
serious injury to a child or adult, and serious damage to the product.
H. Ventilation: Slots and openings in the unit are provided for ventilation and to ensure reliable operation of the product, to protect it from overheating, thus these openings must not be blocked or covered. This product should not be placed in a built-in
installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been
adhered to.
I. Grounding: This product is equipped with a three-wire grounding-type plug, a plug having a third (grounding) pin. This plug will
only fit into a grounding-type power outlet. This is a safety feature. If you are unable to inser t the plug into the outlet, contact
your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.
J. Power Cord Protection: Power supply cords should be routed so that they are not likely to be walked on or pinched by items
placed upon them, paying particular attention to cords at plugs and the point where they exit the product.
K. Lightning: For added protection of this product during a lightning storm or when it is left unattended and unused for long
periods of time, unplug it from the wall outlet. This will prevent damage to the product due to lightning and power-line surges.
L. Overloading: Do not overload wall outlets or extension cords as this can result in a risk of fire or electric shock.
M. Object and Liquid Entry: Never push objects of any kind into this product through the openings as they may touch dangerous
voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.
N. Servicing: Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified ser vice personnel.
O. Damage Requiring Service: Unplug this product from the wall outlet and refer servicing to qualified service personnel under
the following conditions:
1) When the power supply cord has been damaged
2) If liquid has been spilled or objects have fallen into the product
3) If the product has been exposed to rain, water, or other conductive liquids
4) If the product does not operate normally by following the operating instructions
5) If the product has been dropped or damaged in any way
6) When the product exhibits a distinct change in per formance.
P. Replacement Parts: When replacement parts are required, be sure the ser vice technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
Q. Safety Check: Upon completion of any service or repairs to this product, ask the ser vice technician to per form safety checks
to determine that the product is in proper operating condition.
R. Heat: The product should be situated away from heat sources such as radiators, heat registers, stoves or other products that
produce heat.
INTRODUCTION
CONGRATULATIONS...
...you are now the proud owner of a SWR Bass 750 amplifier! The Bass 750 was designed in response to a
demand for an amplifier that delivered the volume and punch of classic high-powered amplifiers, coupled with
the sound and clarity that SWR is known for. At 750 watts (mono), the Bass 750 is extremely loud, and its
simple front panel controls make it a breeze to dial-in the perfect bass tone. After you spend some time with
the Bass 750 you’ll truly realize that “Feeling is Believing
®
.” Please read this entire manual carefully so that
you can fully realize the potential of the Bass 750.
MADE IN THE U.S.A.
SWR amplification is handmade and individually tested in the United States. Everyone at SWR sincerely hopes
that you are satisfied with your recent purchase, as we ar e extremely pr oud of the quality and attention that
goes into each and every SWR product. We truly hope that your pur chase of an SWR helps bring out the best
in your playing and adds to your enjoyment of music.
Thanks for choosing SWR!
The amplifier packaging should include the following items:
(1) Owner's Manual
(1) AC Power Cord
(1) Warranty/Product Registration Form
BASS 750 USER GUIDE
BASS 750 USER GUIDE • 1
SWR BASS 750
FRONT PANEL FEATURES
• Dual independent input jacks compatible with both active and passive instruments
• Stereo Headphone Jack
• Gain Control with LED peak clipping indicator
• Aural Enhancer Control
• Bass Control (with pull Turbo function)
• Mid Range Level Control
• Mid Range Frequency Control
• Treble Control (with pull Transparency function)
• Ef fects Blend Control
• Variable Limiter Control
• Master Volume Control
• Speaker On/Of f Switch
• Power On/Of f Switch
• Rack Handles
REAR PANEL FEATURES
• Balanced XLR Output with select switch for Line or Direct Mode
• XLR ground lift & pad control
• Tuner Send
• Side Chain Ef fects Loop
• Two 1/4" speaker output jacks
• Two Speakon
®
speaker output jacks
• (1) Speaker fuse: 3AG, 10 amp, fast-blo
• (1) Line Fuse: 3AG, 8 amp, slow-blo
• A/C power cord receptacle
SPECIFICATIONS
Power Output
850 watts @ 2.6 ohms
750 watts @ 4 ohms
450 watts @ 8 ohms
(minimum load = 2.6 ohms)
Frequency Response (power amplifier): 10Hz to 40kHz
Size: 19"W x 5.38"H x 10.5"D (482.6 x 136.6 x 266.7 mm) (3 rack spaces)
Weight: 33 lbs. (14.97 kg)
2 • BASS 750 USER GUIDE
FRONT PANEL FEATURES
INPUT JACKS
Both input jacks accept a standard 1/4" phone plug and both inputs can be used at the same time. Since the
two inputs are totally independent, no loss in volume or tone will occur if two instruments ar e used simultaneously. Please keep in mind, however, that the Active/Passive input has five times more gain than the Active
input.
PASSIVE/ACTIVE INPUT
A “passive” instrument has no built in preamp and does not use a battery. On the other hand, an “active”
bass utilizes a battery operated preamp, either for gain, tone controls, or both. Although labeled “Passive,”
the Passive input jack on your Bass 750 will work with all instruments having a maximum output of less than
1 volt RMS.
Generally speaking, try the Passive input jack first. If you hear a small amount of distortion and the pr eamp
clip LED is not activated, try using the Active input jack.
Note: If you would like to overdrive the first TUBE stage, this can be accomplished by using an external
preamp between your instrument and the Passive input. To obtain optimum sound when trying this,
make sure the preamp clip LED is not activated. If this occurs, turn down your Gain control. The first
preamp tube stage is NOT monitored by the preamp clip circuit for this reason.
ACTIVE INPUT
The Active input jack should be used with instruments having a built-in (on board) pr eamp that will produce
signals over 1 volt RMS. Basses with really “hot” pickups may find the Active input more compatible. If you’re
using a KEYBOARD or BASS PEDAL, etc. with the Bass 750, we have found the best choice to be the Active
input.
Note: Using the Active input with a passive instrument may result in a loss of high end transients.
Players who roll off their high end frequencies star ting at about 2kHz or who prefer a “darker” sound
may find this input more to their liking.
If you hear some distor tion with your active bass and ar e using the Active input jack, check your instr ument’s
battery. Also, make sure that the preamp clip LED is not lit. Following these instructions can save you and a
service technician a lot of aggravation.
HEADPHONE JACK (STEREO ONLY)
By inser ting a set of ster eo headphones into this jack you can monitor your sound or practice without disturbing your neighbors. The headphone volume level is adjusted by the Master Volume. We suggest you begin with
the Master Volume of f (fully counter-clockwise), then slowly bring up the volume to the desir ed level. If you
hear some distor tion in your headphones that is not pr esent with the speakers on, tur n down the volume.
You are probably overdriving your headphones and could damage them (not to mention your ears).
Note: Any impedance headphones will work. However, optimum impedance is 75 ohms.
GAIN CONTROL
The Gain control adjusts the volume of the preamp section. After the tone controls and limiter are set to your
liking, the Gain control should be set to where the Preamp Clip LED barely flashes upon striking your loudest
note. Then adjust the Master Volume to the desired volume level. Utilizing these controls in this manner
assures the user of maximum signal to noise ratio with no distortion caused by the preamp cir cuits “clipping.”
PREAMP CLIP LED
The Preamp Clip LED will light if any portion of the preamplifier r eaches clipping or r uns out of headroom. This
can be caused by the Gain Control being set too high or if any of the tone controls are set in a high boost
position. To correct this condition, tur n down one of the previously mentioned contr ols.
Note: The Preamp Clip LED indicates that at some point the preamplifier is clipping. No harm is being
done to your amplifier but, clipping of the power amplifier can cause damage to your loudspeakers and
is not recommended.
BASS 750 USER GUIDE • 3
AURAL ENHANCER
SWR’s Aural Enhancer control was developed to bring out the fundamental low notes of the bass guitar,
reduce certain frequencies that help mask the fundamentals, and enhance the high end transients. The r esulting frequency response is similar to that used for recording the bass in the studio. This effect becomes more
radical as the control is turned to maximum. The result is a mor e “transparent” sound and is especially noticeable when slapping/thumb-style on the bass guitar.
Basically, the Aural Enhancer can be described as a tone shaping control, as it is a passive R/C network that
alters the frequency response throughout the bass spectr um. This pr e-shaping is “blended” into the original
signal via the Aural Enhancer control. Exact frequencies affected are dependent on the characteristics of the
instrument used.
ACTIVE TONE CONTROL SECTION
BASS CONTROL
The Bass control adjusts the level of the lower or bass frequencies. Starting at mid-center click-position, tur ning the control counter-clockwise cuts the bass response; turning the contr ol clockwise boosts the bass
response.
PULL TURBO FUNCTION
Pulling the bass control to the out position widens the bandwidth of the bass control to include frequencies
down to 30Hz (low B on a five string bass). Since some of these notes can be felt more than heard, it is especially impor tant to keep an eye on the pr eamp clip LED. Constant clipping of these frequencies can diminish
the life of the speakers or cause them to fail.
MID RANGE SECTION
Level Control
The Level control cuts or boosts the frequency set by the Frequency control. Starting at mid-position, turning
the Level control counter clockwise cuts the desired tone. Turning the Level control clockwise boosts the
desired tone. When the level control set at mid (center click) position, turning the fr equency control will have
no af fect on the sound.
To find the midrange area you’re looking for:
1. Adjust the Level control to the full boost or cut position.
2. Rotate the Frequency control until the desired area you wish to cut or boost is found.
3. Adjust the Level control to the desired amount of cut or boost
Frequency Control
The Frequency control sets the area that is to be cut or boosted by the Level Control. If the Level contr ol is set
at mid-position, turning the Frequency knob will have NO affect.
Note: If you need to “cut through” the band a little more, tr y boosting 200 to 400Hz. If you like a more
transparent sound, try cutting at 800Hz. The midrange area is especially useful in controlling fretless
basses and their inherent qualities.
TREBLE CONTROL
The Treble control is a shelving type tone control that cuts or boosts the high notes and their octaves. Starting
from mid position, turning the control counter-clockwise cuts the highs while tur ning the contr ol clockwise
boosts the treble region.
PULL TRANSPARENCY FUNCTION
In the normal (in) position, the shelving point of the treble contr ol is approximately 2kHz. By pulling the knob
outward, the shelving point is changed to 4kHz.
4 • BASS 750 USER GUIDE
EFFECTS BLEND
This control blends the signal sent from your bass with that coming from your effects unit. With the Effects
Blend control fully counter-clockwise, no signal from your effects will be heard (“dry”). As you turn this control
clockwise, more of the ef fect can be hear d in the overall sound. When the Blend control is fully clockwise
(“wet”), no true or unaffected signal is hear d other than what your effects unit provides. If your effects unit
has a similar control, adjust it to the fully “wet” position. This will avoid any possible phasing problems.
The Blend circuit is similar to that used on recording consoles with the effects loop on a “side chain” to the
normal circuit. Unless the contr ol is set to the full “wet” position, you will always get the full sound of your
instrument AND get the diversity an effects unit offers. This cir cuit is also effective in r educing noise generated by ef fects units because it is located after the gain stages in the preamp.
The Ef fects Blend functions
only when the effects loop is being used. It is activated when a 1/4" phone plug
is inser ted into the Effects Receive jack. See the “Ef fects Loop” section for more infor mation.
LIMITER CONTROL
This Limiter circuit is located after (post) the Master Volume and before (pre) the power amplifier. Therefore, the
Limiter is driven by the Master Volume. Its threshold (or starting point) is set by the Limiter contr ol and can be
used to achieve maximum overall apparent volume without unduly overdriving the power amplifier or internal
speakers. Turning the Limiter control clockwise (toward “max”) increases the effect of the Limiter circuit.
LIMITER ACTIVE LED
When the threshold of the Limiter circuit is reached, the gr een Limiter Active LED will light. This LED will be
inactive when the Limiter is set to the “of f” position or when playing at lower levels.
MASTER VOLUME
The Master Volume adjusts the level being sent to the power amplifier section of the Bass 750 and controls
the overall volume of the unit. It DOES NOT af fect the level of the recor d XLR output in the “line” position.
Losses caused by ef fects units can be recover ed by increasing the Master Volume.
SPEAKER ON/OFF SWITCH
Moving the Speaker On/Of f Switch to the “On” position allows the signal from the amplifier to be hear d
through any speaker enclosure(s) connected to the Bass 750’s output section. Moving the Speaker On/Off
Switch to the “OFF” position disables the Bass 750’s output section. This feature allows the user to:
1. Use the XLR Output without using the internal speakers. This is especially useful in recording when
you are not miking the speakers and only a direct signal is required.
2. Tune up without interfering with other band members while using the Tuner Send feature.
Note: If you do not hear any sound when you plug in and your system is properly connected, check the
position of this switch!
POWER ON/OFF SWITCH
Moving the Power Switch to the “On” position will turn on the amplifier as indicated by the Power LED lighting
(directly above the switch).
REAR PANEL FEATURES
AC OR MAINS FUSE
This fuse is provided to protect the internal electr onics against power sur ges, etc. It also protects the unit
against itself should one of the internal components fail. If this fuse should open, replace it with the same
type of fuse and rating.
Note: Do note defeat the purpose of this feature by using a fuse of a higher value. It could damage the
unit and will void your warranty!
BASS 750 USER GUIDE • 5
Proper size of the AC fuse for all countries is 3AG. Proper rating of the fuse is as follows:
Japan: 8 amp slo-blo
United States: 8 amp slo-blo
Europe (240V): 4 amp slo-blo
AC CORD RECEPTACLE
Accepts a standard AC power cable (supplied with the Bass 750), used with almost all curr ent musical, professional and household electronic devices. If you misplace your AC power cable, a replacement can be found at
almost any computer. electronics, or pro audio store.
Note: The rating for this cable is 3 conductor, 10 amperes MINIMUM. If replacement is necessary, or if
you wish to buy a longer cable, look for the rating on the cable and be sure it is at least 10 amps. Make
sure the AC cord is plugged in all the way in both the amp and the wall socket. If your cord ever
becomes frayed or split, replace it immediately.
EFFECTS LOOP
The Ef fects Loop should accept any effect such as a chor us, flanger, etc. It is designed as a “side chain”
function and works exactly like that of studio consoles. Some ef fects units have an input level adjustment
switch. Whenever possible, set it at 0 dB. If that’s not an option, +4 dB is fine. The level going to your ef fect
is controlled by the Gain control on the front panel of the Bass 750.
Use of the Ef fects Loop should greatly r educe the noise generated by effects units (as compar ed to using the
ef fect between your instr ument and the input jack). This is because the loop is after the pr eamp gain stages.
Note: The effects loop must be used in conjunction with the Effects Blend control on the front panel.
When that control is in the “dry” position, no ef fects will be heard.
All patch cords used with the Ef fects Loop should be as short as possible and should be routed as directly as
possible. Running patch cables over the top of the Bass 750 (as with any amplifier) can induce hum in the
cables.
SEND JACK
Run a shielded patch cable from the Bass 750’s “Send” jack to the INPUT of your ef fects unit. Output impedance of the send jack is 100 ohms. This jack can be used as a line level output to connect a slave power
amp, such as SWR’s Power 750. It may also be used as an unbalanced record out.
RECEIVE JACK
Run a shielded patch cord from the Bass 750’s “Receive” jack to the OUTPUT jack of your effects unit. A
unique feature of the receive jack is that you can practice along with pre-recor ded music. To accomplish this,
inser t a tape r ecorder or other sound sour ce into the “Receive” jack (make sur e it is a MONO source). Using
the Ef fects Blend control, adjust the level of r ecorded music fr om the Receive to the “live” sound of your
instrument. The mixed sound will be heard thr ough your speakers. This is an excellent way to practice along
with drum machines. Input impedance of the Receive jack is 27kohms minimum.
Note: Inser ting a plug into the “Receive” jack activates the Ef fects Blend control. The control receives this
command through the ground created by the phone plug making contact with the jack. The plug must be a
mono plug (tip and ground). If you have a stereo plug only, tie the ring and the ground together.
PREAMP OUT JACK
The Preamp Out jack is a post-EQ output that allows a signal to be run to an exter nal power amp (such as the
Power 750) or recording device.
SPEAKER FUSE
The speaker fuse is provided to protect your speakers in the unlikely event of a power amp failure or to protect
your power amplifier from incorr ect speaker impedances or connections. Size and rating of the fuse is 10 amp,
fast blow. Do not defeat the purpose of this feature by using a higher rated fuse as it could void your warranty
and fur ther damage your amp.
6 • BASS 750 USER GUIDE
The fuse can open as a result of a fault in the speaker cable, the speakers themselves, or the power amp being
sent well into clipping. With this in mind, we recommend keeping spare fuses with the amplifier at all times.
SPEAKER JACKS
Two 1/4" phone jacks (wired in parallel) and two Speakon®connectors (wired in parallel) are provided for
hooking up your speaker system. The minimum load (or impedance) the Bass 750 is designed to drive is 2.67
ohms (the equivalent of one 8 ohm cab and one 4 ohm cab connected in parallel).
It should be noted that the Bass 750’s preamp section
can be r un without speakers attached to the speaker
jacks. (See “Speaker Of f/On Switch” under “Front Panel Featur es.”) This is helpful when using the amplifier
for recording purposes (via the XLR output) and speakers are not requir ed.
Note: The frequency response of the Bass 750 is far greater than usually found in musical instrument
amplifiers (10Hz to 40kHz). This was engineered in order to give the bass player the same punch and
clarity on stage as found in the studio or concert P.A. systems. Therefore, it is doubly impor tant that you
be aware of the impedance and power rating of the speakers that you intend to use and that they are
compatible with the Bass 750. Speakers that have been overdriven are easy to detect and are not covered under warranty.
SPEAKER CABLE
Speaker cable should be made of 18-gauge, or heavier, wire. (The thicker the wire, the lower the gauge, so 18gauge is heavier than 20-gauge and so on.) Do not use instrument cables to hook up your speakers. This can
result in intermittent power loss, cause your power amp to oscillate and damage itself and/or your speakers,
and render the cables useless for any purpose.
To connect the Bass 750 to your speakers via the Speakon output jacks, a Neutrik Speakon cable is r equired.
These cables are NOT supplied with the Bass 750, but are available from your local music retailer or dir ectly
from the SWR Service Department.
XLR PAD
The XLR Pad control adjusts the level of the Balanced XLR Output. Rotating the control clockwise raises the
level at this output.
GROUND LIFT
The XLR Pad has a built-in Ground Lift for the Balanced out. Pulling the knob outward lifts the ground (pin 1).
If a persistent hum exists after trying both positions of the ground lift, there is pr obably a mis-wire or bad
ground in the feed lines to the board or console or a dirty or miswir ed A/C socket. SWR recommends the purchase of an AC wall socket tester which can identify proper wiring (available at most hardware stores). These
inexpensive devices are a simple way to protect you and your equipment from faulty electrical systems.
LINE/DIRECT SWITCH
The Line/Direct switch gives the user the option of either a line signal (preamp out) or direct signal from the
instrument. The signal appearing at the XLR out is slightly “hotter” than nor mal D.I.’s. You may want to inform
the engineer of this.
To use the Line/Dir ect function, position the knob in the desired location. Make sure the switch is all the way
to the left or right to avoid intermittants.
Note: Turn-off transients appear at the record outs when the amplifier is shut down. It is recommended
that equipment being used in conjunction with the record out be turned down, of f, or disconnected
BEFORE the Bass 750 is turned off.
BALANCED XLR OUT
The Balanced XLR out is a true electronically balanced r ecord out. The signal appearing at the XLR out is governed by the position of the XLR Pad. In the LINE position, all front panel controls ar e functional except the
Master Volume, and the signal is essentially the same as that heard through your speaker system. The output
level in the Line position is adjusted by the GAIN control on the front panel. If you are using an effect, this will
also appear mixed in the signal when you are in the line mode.
In the “Direct” position, the Balanced XLR out becomes an active TUBE direct box. No front panel controls ar e
functional and the level is only adjustable via your instrument.
BASS 750 USER GUIDE • 7
Wiring for the XLR connector is as follows:
Pin 1 = ground, Pin 2 = +, Pin 3 = – (negative) (American Standard)
The Bass 750 is compatible with Phantom Power-equipped mixing consoles.
TUNER SEND
The Tuner Send allows the user to plug an instrument tuner into this jack and tune up without having to unplug
and go back and for th fr om amp to tuner. This feature is totally isolated from the rest of the preamp and will
function regardless of the settings on the front panel. Being on a side chain (isolated) also avoids loading
down of the instrument causing a loss in dynamic range.
To use this featur e, plug in a shielded patch cord fr om the Tuner Send output to the input jack on your tuner.
Turn the amplifier on and you’re ready to go. If you do not wish to monitor your sound during the tuning
process, switch the Speaker On/Of f switch to the “off” position.
INTERNAL FEATURES
VACUUM TUBE (VALVE)
SWR installs a specially selected 12AX7 dual triode tube (valve) in the preamp section of every Bass 750. If
this tube needs replacing, we recommend that you replace it with a similar high quality product. This tube will
require replacement only in the event it becomes noisy or microphonic (sounds like glass tinkling in the background of certain notes), or completely fails causing no signal.
POWER ON TRANSIENT
When the Bass 750’s power switch is moved to the “On” position, you will hear a turn-on transient (sounds
like a “thud”) through your speakers. This will not harm speakers made by SWR, however, you may wait to
connect your speaker cable to the Bass 750 until after powering up. Just make sure you are not playing
through the unit when you make the connection, as it could cause a speaker fuse to blow. Eliminating this
transient would require a component called a relay. Since relays tend to degrade signal quality and often fail,
we decided not to incorporate this type of component in the Bass 750.
A FEW WORDS CONCERNING HEAT
Please be aware that the chassis of your amplifier can get quite warm during nor mal use. This is especially
true if you are using a 2.67 ohm total impedance, as this intr oduces the least efficient condition possible for
the unit (i.e., power drawn from the outlet in relation to power produced in the speakers). The differ ence in
these two figures can be quite high, basically resulting in the equivalent of putting a high wattage light bulb
inside a metal box—which would obviously get quite warm.
Fur thermore, most musical instr ument amplifiers on the market today utilize steel for their chassis, which in
most cases is considerably cheaper than aluminum and does not conduct heat as well. With the exception of
the front panel (which is made of steel), the Bass 750 utilizes an all aluminum chassis, which has less impurities than steel, is less susceptible to rust, and is a better conductor of heat. This results in the chassis acting
as a heatsink—drawing heat away from internal heat-producing components, thus extending their life and making the Bass 750 a more reliable amplifier.
You should be aware of a heat-related condition known as “over biasing.” If one or more of the power amplifiers
in your Bass 750 becomes over biased, it may cause the unit to generate more heat than normal. This condition can be recognized by turning on your amplifier and letting it sit without speakers plugged in and without
playing it. If under these conditions your unit becomes quite warm, it may be over biased. This situation should
be attended to and can be easily remedied in about 15 minutes by a qualified technician. An amplifier can
become over biased through continuous vibration or by any large jolt r eceived in shipping, transportation, etc.
RACK MOUNTING INSTRUCTIONS
To preserve the beauty and reliability of your amplifier, we recommend that you install your amplifier in a rack
case. The Bass 750 is completely ready to be rack mounted and needs no additional parts or accessories
other than the case itself. The Bass 750 takes up three full rack spaces (it is 5-3/8" high). If the rack that
you mount the Bass 750 in requires that the r ubber feet on the bottom of the chassis be removed, please
remember to REPLACE the screws, as they help to reinfor ce the chassis.
8 • BASS 750 USER GUIDE
The Bass 750 should be mounted as close to the bottom of the rack case as possible. The height of the rubber feet was chosen so that when you slide the unit in the bottom of the rack case, the rack mounting holes
on the front panel will line up with the mounting holes of the rack rail. This prevents the Bass 750 from flexing
downward if the rack case is dropped. If you must mount the Bass 750 in an area of the rack other than the
bottom space, a piece of wood or similar solid material should be installed between the bottom of the rack
case and the bottom of the amplifier to prevent flexing of the amplifier’s chassis. Severe or constant flexing of
the chassis can damage the amplifier and is not covered under the warranty.
Don’t neglect your amp after it has been installed in a rack case. Continuous transpor tation and vibration can
cause screws to become loose, both on the Bass 750 and on your rack case rails. We recommend that at
least once a month you remove the Bass 750 from the case and tighten all outside screws (especially on the
front panel). Then check all the connections in your rack case and reinstall the unit.
BASS 750 USER GUIDE • 9
LIMITED WARRANTY
The BASS 750 from FMIC is warranted to the original consumer purchaser for TWO YEARS from the
date of purchase, against defects in materials and workmanship and provided that it is purchased from
an Authorized SWR Dealer. This warranty applies only to products purchased in the USA or Canada.
This warranty is VOID if the unit has been damaged due to accident, improper handling, installation or
operation, shipping damage, abuse or misuse, unauthorized repair or attempted repair, or if the serial
number has been defaced or removed. FMIC reserves the right to make such determination on the
basis of inspection by an Authorized FMIC Service Center.
All liability for any incidental or consequential damages for breach of any expressed or implied
warranties is disclaimed and excluded herefr om.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or
limitation of incidental or consequential damages, so that the above exclusion may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which vary from state
to state.
SHOULD YOUR AMPLIFIER REQUIRE REPAIR:
Locate your original sales receipt showing details of purchase including date of purchase, model,
and serial number.
Find the nearest Authorized FMIC Service Center by calling FMIC Consumer Relations at:
(480) 596-7195, or on the web, at: http://www.mrgearhead.com/faq/allservice.html
To receive warranty service, return the complete product to an Authorized FMIC Electronics Service
Center, with proofof purchase, during the applicable warranty period.
Transportation costs are not included in this Limited Warranty.
Defective products that qualify for coverage under this warranty will be repaired or replaced, at FMIC's
discretion, with a like or comparable product, without charge.
➊
➋
➌
➍
For a complete list of Authorized FMIC Service Centers
— and to learn more about SWR products and artists —
point your browser at:
swrsound.com
SWR
8860 E. Chaparral Rd. Suite 100 • Scottsdale, AZ 85250-2618 USA
Phone: (480) 596-9690 • Fax: (480) 367-5262Ô, E-mail:Ô custserve@fenderusa.com
Part # 320026
REV. 08/2001
©2001 SWR
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