BBE 651 Electric Guitar Preamp Owner Manual

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BBE 651 Electric Guitar Preamp Owner Manual | Manualzz
 DL
Sound Inc.
MODEL 65 1
GUITAR PREAMP
USER MANUAL
5500 Bolsa Ave., Suite 245
Huntington Beach, CA 92649
(714) 897-6766 FAX (714) 895-6728
BBE is the registered trademark of BBE Sound. Inc.
Important Safeguards
To prevent fire or shock hazard, do not expose
the unit to rain or moisture.
ATTENTION: RISQUE DE CHOC
ELECTRIC- NE PAS
OUVRIR.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lightning flash with arrowhead symbol, within
an equilateral triangle, is intended to alert the user
to the presence of uninsulated "dangerous
voltage" within the products enclosure that may
be of sufficient magnitude to constitute a risk of
electric shock to persons.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
The exclamation point, within a equilateral triangle
is intended to alert the user to the presence of
important operating and maintenance (servicing)
instructions in the literature accompanying the
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
appliance.
For your protection, please read these safety instructions completely before operating the appliance, and
keep this manual for future reference.
Carefully observe all warnings, precautions and instructions on the appliance and described in the
operating instructions supplied with the appliance.
INSTALLATION
Water and Moisture - Do not install the
appliance near water: for example, near a
bathtub, washbowl, kitchen sink, laundry tub,
in a wet basement, or near a swimming pool.
Heat - Do not install the appliance near
sources of heat such as radiators, heat regis-
ters, stoves, or other appliances that pro-
duce heat.
Ventilation - Situate the product so its
location or position does not interfere with its
proper ventilation. For example, you should
not place the product on a bed, sofa, rug, or
similar surface that might block the vent
openings, or placed in a built-in installation,
such as a bookcase or cabinet that might
impede the flow of air through the ventilation
openings.
Wall or Ceiling Mounting - if your
appliance can be mounted to a wall or ceil-
ing, mount it only as recommended.
USE
Power Source - Connect the appliance
to a power supply only of the type described
in the operating instructions or as marked on
the appliance.
Power-Cord Protection - Route the
power cord so that it is not likely to be walked
on or pinched by having objects placed on it,
paying particular attention to the plugs,
receptacles, and the point where the cord
exits from the appliance.
Grounding or Polarization - Do not
defeat the grounding or polarization feature of
the AC pawer cord. If your AC receptacie will
not accept the power cord plug, contact your
electrician to install a proper AC receptacie.
When not in use - Unplug the power
cord of the appliance from the outlet when left
unused for a long period of time.
To disconnect the cord, pull it out by grasping
the plug. Never pull the plug out by the cord.
AC Receptacle - Check to make sure
that the AC receptacle holds the power cord
plug firmly and securely. If the power cord
plug - is loose, contact your electrician 10
replace the defective and unsafe AC
Foreign Objects - Be careful that foreign
objects and liquids do not enter the enclosure
through openings.
SERVICE
Unplug the appliance from the wall outlet and
consult qualified service personnel when:
* the power cord or the plug has been
damaged.
* a solid object or liquid has fallen into the
cabinet.
* the appliance has been exposed to rain or
moisture.
* the appliance does not appear to operate
normally or exhibits a marked change in
performance.
* the appliance has been dropped, or thé
enclosure damaged.
Do not attempt to service the appliance
beyond that described in the operating
instructions. For all other servicing, refer to
qualified service personnel only.
TABLE OF CONTENTS
Precautions........................eereeere RE E econcoooereoeencocneceeeceorrcenereccocereconreceaoaceoorencooocecooorececeorenace ecec eee eee ee Î
Product Description................-..—..—.....e..er0err e neeereerorecenonnenneraceecenenecneoreone re ceeeeoneercen eeec eee 1
Controls/Connections........................e.=eee000ee0eer D D eee eee eee eee DD e eee e eee eee e eee eeec ee 2-5
ES-500............e.necearcecoc eeec eereceneecoenoreneeraceecereceraceocerccorecoreorecerecereceecarecooecerecorecocree ece oeoc eeec eee oee eee r eee 6
General Operation/Applications.........................eeeeereerreeo eee rD eee ee eee eee eeene eee enernoe eoec eoe 7-12
Service/Warranty Information...................... ... .eeeeeeeeeee eee D e e O D e I O I RR R R eee eee R e De eee 13
Specifications.................. ...c ee ee re eee ereceeecererrerenereree n rececoceceen eeec eee eee 14
Block Diagram.....................e...eeereeeecoreie re eee eee eeec e eee eee eee eee e ee eee eee e eee eee eee eee 15
Congratulations on your purchase of the BBE Model 651 Guitar Pre-amp! This three channel guitar pre-amp offers
flexibility unequaled in today’s market place. With the BBE 651's three channels, the player is able to achieve some of
the most traditional American cleans, California classic warm overdrives, and the most dynamic "touch responsive" distortion
of any pre-amp. The "touch response" is derived by using high impedance input JFET and MOSFET transistors in the
distortion circuitry to closely resemble the warmth and richness of tube amplifiers. Because all the controls are front panel
mounted, the status of each can be known at a glance. Fine tuning any parameter can be done quickly and accurately. (The
LED indicator for the Speaker Voicing Circuit is on the front panel, the switch for the SVC/" js located on the rear panel.)
In addition, the BBE 651 Guitar Pre-amp is packed with features that will allow the player to get the most from his/her
creative talents. Whether in the studio or on stage, these features will indulge players of any style or caliber:
1.
3.
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10.
Custom BBEe circuit for increased tonal quality and intelligibility with a built-in noise suppressor.
Active three band Tone Shaping Controls for both the Clean/Crunch Channels and the Distortion Channel.
A switchable "Speaker Voicing Circuit," SVC/, allows the user to plug directly into a mixing console or to record
direct to tape and still have that full, rich, cabinet sound that the player enjoys hearing. 'The importance of this
feature is most evident in eliminating the need to transport a speaker cabinet or the use of microphones for sound
reinforcement.
A Stereo Effects Loop with an adjustable return level, to interface the BBE 651 with the most popular of effects
processors.
Stereo Headphones driver for those late night practice sessions or a final sound check before the show.
An output Mute Switch to attenuate the final output 60dBu between songs or while monitoring through the
headphones.
A Tuner Output Jack that allows the insertion of a tuner without actually entering the audio signal chain.
A Front Panel Input along with a Rear Input allows for easy interfacing with any guitar sound system.
An Input Gain stage with an LED Bar Display for accurate level matching between the guitar's pickup level and
the BBE 651 guitar pre-amp.
The FS-500 Footswitch is included to operate, at the user's option, the BBE 651 switching functions at a touch of
the foot. The FS-500 Footswitch defeats the corresponding front panel controls while operating with a standard
guitar or speaker cable!
The following sections will provide detailed information on all of the BBE 651's functions.
IMPORTANT
Before you begin, please check the contents within this box to insure that included are:
в о ю-
The BBE 651 Guitar Pre-amp.
The FS-500 Function Select Footswitch.
A 25’ two conductor cable.
BBE 651 User’s manual.
If any of these items are found to missing, contact your BBE dealer from whom the unit was purchased immediately.
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VOLUME:
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CONTROLS AND CONNECTIONS
FRONT PANEL
Input
This jack allows for the connection of the guitar to the BBE 651 pre-amp. With the use of the Input
Gain Control, it can accommodate almost any input level: a guitar or bass guitar, keyboard, etc.
Additionally, the Front Panel Input has priority over the Rear Panel Input. This will allow for easy access
to another sound source without the inconvenience of reaching behind the rack. (See the Rear Panel section
for more details on the Rear Input.)
This button attenuates the main Stereo Outputs of the BBE 651 pre-amp by 60dB. When depressed, the
"Red" LED illuminates, indicating that the outputs have been attenuated. The sound, however, can be
monitored through the headphones which are active regardless of the mute switch status. When pressed a
second time, the "Red" LED will turn off, reactivating the main Stereo Outputs.
When the Clean/Crunch Channel is selected, this knob will provide gain of up to 10X to precisely
match the level of the guitar’s pick-ups as indicated by the LED Bar Display. To avoid any unwanted
distortion on the Clean Channel, adjust the Input Gain Control to illuminate only the first "RED" LED
of the bar display on the loudest note or chord of the guitar. The top most "RED" LED indicates that
the input signal is too large, or is "clipping." The Input Gain Control is effective for the Clean/Crunch
Channel only. (The Distortion Channel is provided with a fixed input gain of over 1000X.) Note: It is
possible to increase the amount of overdrive to the Crunch Channel by increasing the Input Gain, but
remember, this will also affect the Clean Channel.
Clean Channel
Use this control to balance the Clean/Crunch Channels volume to that of the Distortion Channel as desired.
This control adjusts the amount of high frequency content, cornered at 2.5kHz, within the channel. Turning
the knob to its maximum position (clockwise) boosts the high frequencies +12dBu. Turning the knob to
the minimum position (counter-clockwise) reduces the high frequency content -12dBu. The middle position
would be considered as flat or no change.
R
MODEL 651 SVC
0 E 0 10
(EFFECTS — DEFINITION IMASTER CHANNELI O
PE 1
6. MID:
7. LOW:
This control adjusts the amount of mid range frequency content, centered at 400Hz, within the channel.
Turning the knob to its maximum position (clockwise) boosts the mid range frequencies +12dBu. Turning
the knob to the minimum position (counter-clockwise) reduces the mid range frequency content -12dBu.
The middle position would be considered as flat or no change.
This control adjusts the amount of low frequency content, cornered at 100Hz, within the channel. Turning
the knob to its maximum position (clockwise) boosts the low frequencies +12dBu. Turning the knob to the
minimum position (counter-clockwise) reduces the low frequency content -12dBu. The middle position
would be considered as flat or no change.
Crunch Channel
The Crunch Channel shares common Tone Shaping Controls with those of the Clean Channel. Therefore, the desired
settings for the Clean Channel will effect the Crunch Channel in the same way. (See the above section for specific details).
8. CRUNCH:
9. DRIVE:
10. VOLUME:
11. HIGH:
This knob controls the amount of overdrive that is applied to the Clean Channel. (Thus creating the
second channel.) Completely counter-clockwise would be considered minimum overdrive. Turning the
knob clockwise increases the amount of overdrive to the Clean Channel. Note: The Input Gain Control
will also effect the amount of overdrive that may be achieved with this channel.
Drive
This knob controls the amount of distortion that is applied to the third channel. Minimum distortion
occurs with the knob turned completely counter-clockwise. Turning the knob clockwise increases the
amount of "touch responsive” distortion and sustain. Note: The degree of "touch response" diminishes as
the Drive level increases.
This knob controls the volume of the Distortion Channel. Use this knob to balance the volume between
the Distortion and Clean/Crunch Channels as desired.
This control adjusts the amount of high frequency content, cornered at 2.5kHz, within the channel. Turning
the knob to its maximum position (clockwise) boosts the high frequencies +12dBu. Turning the knob to
the minimum position (counter-clockwise) reduces the high frequency content -12dBu. The middle position
would be considered as flat or no change.
12. MID:
13. LOW:
14. EFFECTS:
15. BBE:
16. MASTER/
PHONES:
17. PHONES
JACK:
18. CHANNEL
SELECT:
1 & 2:
19. 3:
20. SVC LED:
This control adjusts the amount of mid range frequency content, centered at 1kHz, within the channcl.
Turning the knob to its maximum position (clockwise) boosts the mid range frequencies +12dBu. Turning
the knob to the minimum position (counter-clockwise) reduces the mid range frequency content -12dBu.
The middle position would be considered as flat or no change.
This control adjusts the amount of low frequency content, cornered at 100Hz, within the channel. Turning
the knob to its maximum position (clockwise) boosts the low frequencies +12dBu. Turning the knob to the
minimum position (counter-clockwise) reduces the low frequency content -12dBu. The middle position
would be considered as flat or no change.
Stereo Effects Return
This control adjusts the volume of the stereo effect’s signal that will be mixed with the guitar’s signal.
Completely counter-clockwise would be considered minimum effect. Turning the knob clockwise will
increase the mix of effect signal to guitar signal. Note: If the effector is monaural, either return may be
used. Therefore both of the main outputs will receive the same mono signal.
BBE® Process
This control introduces the BBEe process which has been specially modified for the BBE 651 pre-amp. The
BBEe process gives the user a more detailed perception of tonality, added "bite" and an increase in clarity.
The low end of the guitar will be tightened without losing its thunderous effects--all without adding or
creating any additional noise or harmonic distortion. When the knob is in its minimum position, no process
is taking effect and the circuit is in its noise suppression mode. Turning the knob clockwise will induce the
BBEs process. Adjust the knob to mix the desired amount of process for your own needs. Thc BBEe
process also has its own in/out switch for comparison of the processed to unprocessed signal on the front
panel of the BBE 651 or on the FS-500 Footswitch. Experiment with the process. Use the BBE® as an
extension 10 the Tone Shaping Controls. Please note that the BBEe process is not an effect, but an improve-
ment. A good place to start with the BBEs process is to set the knob to its 12 o’clock position and adjust
accordingly. In addition, the BBEe process is applied before the effects send.
Master Volume/Headphone Level
This control serves a dual function on the BBE 651 pre-amp. First, as a Master Output volume control:
the overall output volume may be changed without affecting the channel balance that had been established
at sound-check. Secondly, as a level control for the Headphone Output: adjust to any desired listening
level or to overcome any ambient noise condition.
This jack is for connecting a set of stereo headphones with an impedance ranging from 8 to 600 ohms.
Channel Select
This button allows for the selection between the Clean and Crunch Channels of the BBE 651 pre-amp.
When in the out position, the "GREEN" LED will illuminate, indicating that the Clean Channel has been
selected. When depressed, (the "IN" position), the "GREEN" and the "YELLOW" LED will illuminate
indicating that the Crunch Channel has been activated. This function may also be controlled by the BBE
FS-500 Footswitch.
This button is an on/off button for the Distortion Channel. When it is depressed, the "RED" LED will
illuminate indicating that Distortion Channel has been selected. When pressed a second time, the "RED"
LED will turn off and the pre-amp will go back to its original channel status. (Either Clean or Crunch
depending on the position of the 1/2 Switch.) This function may also be controlled by the BBE FS-500
Footswitch.
Speaker Voicing Circuit
This "GREEN" LED will illuminate when the Speaker Voicing Circuit has been activated via the rear panel
switch. (See the Rear Panel section for the control switch and a complete description of the SVC
operation.)
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RETURN:
6. STEREO
OUTPUTS:
7. TUNER
OUTPUT:
8. INPUT:
REAR PANEL
This switch supplies AC power to the BBE 651 pre-amp.
This button, when engaged, activates the SVCI™ (Speaker Voicing Circuit) as indicated by the front panel
LED. The SVC' is a unique voicing circuit that has been specially tailored to simulate a guitar speaker
cabinet. It enables the BBE 651 pre-amp to be connected directly to any mixing console or tape deck, thus
eliminating any need to "mic" the speaker cabinet or transport any unnecessary equipment--all without
inducing "the fuzz" that would normally accompany such action. The Main Outputs or the Headphone
Output may be used to monitor the Speaker Voicing Circuit.
Use this jack to connect the FS-500 Footswitch to the BBE 651 pre-amp, via the two conductor cable that
is supplied. All of the BBE 651 pre-amps major switching functions can be controlled via the FS-500
Footswitch. NOTE: All of the front panel switches will be defeated while the FS-500 is connected. Any
guitar or speaker cable, up to 100 feet in length, may be used to connect the FS-500 Footswitch 10 the BBL
651 Pre-amp.
Use this jack to connect the BBE 651 pre-amp to an effects processor’s input. This level is approximately
-10dBu depending upon the status of the channel’s Tone Shaping Controls and Volume levels.
Use these jacks, Left and Right, to connect to an effects processor's stereo output. If the effector is
monaural, either return jack may be used. The processed signal will then be the same at both the Main
Output and Headphone mix.
These Right and Left balanced 1/4" outputs, using tip-ring-sleeve configuration, connect the BBE 651 to the
next subsequent component in the system. Whether it be a power amplifier, guitar amplifier, mixing console
or tape deck, the BBE 651 will be able to accommodate the input level required. A monaural plug inserted
into either output will electronically switch the outputs to unbalanced operation without any signal loss.
This Output jack is used as a buffered signal feed, with a gain of three times, to feed any guitar tuner.
Whether it is a pocket sized tuner or a sophisticated rack mounted tuner, the guitar signal will remain
completely isolated from that of the tuner's signal.
This Input is a handy way of configuring a rack system that utilizes multiple pre-amps or a wireless system.
Because the input is on the back, no cables will need to return to the front of the rack, thus eliminating
the need to leave an unused rack space for cable returns. Remember that the Front Panel Input has
priority: The Rear Panel Input will be electronically defeated when the Front Panel Input is being utilized.
FS 500
CLEAN7CRUNCH 2 DISTORTION( F JEFFECTS
FS-500 Footswitch
IMPORTANT: All of the front panel switches will be defeated when the BBE FS-500 footswitch
1s connected.
This patent pending switching circuit will add flexibility to any performance whether live or in the studio.
The FS-500 Five Function Footswitch is supplied with the BBE 651 pre-amp to control all of the primary switching functions
of the BBE 651 guitar pre-amp at the user's option.
1.
The Clean/Crunch Switch allows for the selection of either the Clean or the Crunch Channel at the touch of a foot.
The LED’s on the footswitch will illuminate in the same manner in which the front panel LED’s illuminate. (See
the Front Panel controls section.)
The Distortion Switch turns off the Clean/Crunch Channel and turns on the Distortion Channel. Depressing _the
switch a second time changes the BBE 651 back to its previous state. The footswitch LED will work in conjunction
with that of the front panel LED. (See the Front Panel controls section.)
The BBEe Switch activates the BBEe process. Use the front panel control to adjust the specific amount of process
required. The LED for the BBEs process will work in conjunction with that of the front panel. (See the Front
Panel controls section.)
The Effects Switch activates the effects return. Use the front panel control to determine how much of the effect’s
signal is mixed with the "dry" signal.
The Mute Switch activates the output mute function on the BBE 651 pre-amp. When engaged, the signal present
at the stereo output jacks will be attenuated by 60dB but can still be monitored through the Headphone Output.
The LED will work in conjunction with that of the front panel LED. (See the Front Panel controls section.)
General Operation
In order to reduce the risk of damage to any equipment, properly connect all cables and power cords before turning on any
components in the system. Most important of all, ALWAYS TURN ON THE POWER AMP LAST TO AVOID DAMAGING
THE SPEAKERS.
Calibration of the guitar’s output level to the BBE 651 Guitar Pre-amp is the first essential step in getting started. Select
either the Clean or the Crunch Channel via the front panel switch or the FS-500 Footswitch. While playing the loudest
individual note or chord on the guitar, adjust the Input Gain Control to illuminate the first "Red" LED on the LED Bar
Display. The second "Red" LED will indicate that the input signal is too high and may lead to premature distortion. But
to take this point one step further, inducing input distortion may be desired to increase the amount of overdrive on the
Crunch Channel. (The Input Gain Control is bypassed when Distortion Channel has been selected.)
Setting the Tone Shaping Controls for the desired tone quality would be considered the next step. The Tone Shaping
Controls are configured of active circuitry and frequency tailored for their designated channel. This allows for a wide range
of adjustment, cutting or boosting their designated frequencies, without affecting the adjacent Tone Shaping Control. With
the addition the wide variety of the tonal characteristics from guitar to guitar, the BBE 651’s Tone Shaping Controls will
enable the player to achieve virtually any tone desired.
The BBEs process is a unique feature that only the BBE 651 Guitar Pre-amp possesses. The BBEe process, most noted for
its ability to increase the clarity and the tonal quality of the music program, is achievable without adding unwanted noise
or harmonic distortion. Use this feature as an extension of the Tone Shaping Controls and as means of improving the
overall tonality of the guitar's signal. Use the front panel switch or the FS-500 Footswitch to compare the processed to
unprocessed sound. The advantage of having the BBEs process will be further emphasized when used in conjunction with
effects processors.
The SVCI™M is welcome feature for any player who is constantly mobile or where space and volume levels are prohibitive.
The connection of the BBE 651 Guitar Pre-amp directly to a mixing console or tape recorder while maintaining a warm
guitar cabinet sound is now possible . Additionally, inconvenience of "miking" or transporting a guitar speaker cabinet is
eliminated. For greater flexibility, the SVCIM circuit may be defeated via the rear panel Speaker Voicing Switch to allow
the BBE 651 to be connected into an existing guitar amp or speaker cabinet. Use the SVC,,, Circuit while monitoring the
guitar signal through the Headphone Output for "quiet" practice sessions.
The Master Volume Knob serves a dual function. It will adjust the final output volume and the headphones volume
simultaneously. This convenience is most noticeable when an instant volume change is required without affecting the level
balance of the three channels. Use the Mute switch, via the front panel or FS-500 Footswitch, for an instantaneous 60dB
reduction on the main output level. (The final output signal may be monitored through the Headphone Output regardless
of the Mute Switch position.)
The Main Outputs of the BBE 651 may be used in any combination of balanced/ unbalanced modes, or single monaural,
dual monaural, dual stereo modes. Use the balanced mode, utilizing 1/4", tip-ring-sleeve, plug to connect directly into an
onstage "snake" or similar long distance connection. The unbalanced mode, achieved by using a standard monaural 1/4" plug,
can be used for short cable lengths or where balanced connectors are unavailable. Stereo separation is achieved by using
the BBE 651 Guitar Pre-amp with a stereo effects processor while both of the main outputs are connected to separate power
sources. i.e: a stereo power amplifier. Dual monaural output may be achieved by using a monaural effects processor and
connecting both of the BBE 651's outputs to separate power channels. Single monaural mode is used where only one power
channel is available. In this case, either output may be used to drive the amplifier.
Any effects processor, that accepts an average input level of -10dBu, may be inserted into the BBE 651's effects loop. (This
Jevel may vary due to the position of the individual channel volume levels.) Use the front panel Effects knob to adjust the
amount of "dry," unprocessed signal to "wet," processed signal. Instantaneous defeat of the effects loop can be achieved vía
the FS-500 Footswitch. Note: If a monaural effects processor is being used, either return may be used.
The Tuner Output on the rear panel is especially handy to connect any guitar tuner to the BBE 651 pre-amp. This buffered
output allows any guitar tuner to be utilized without affecting any of the guitar's original tonal characteristics. Equally
important, the guitar tuner may remain connected at all times, eliminating any repatching to adjust the guitar's tuning.
Use the following illustrations to guide in placing the BBE 651 in the signal chain.
USING THE BBE 651 GUITAR PRE-AMP WITH P.A. SPEAKERS
Guitar
Reverb. Delay. etc. Tuner
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BBE 651 '“Î и
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Power Amplifier
FS 500
P.A. Speaker Р.А. Speaker
The BBE 651 Guitar Pre-amp may be connected directly into a mixer or into a power amp (as illustrated) and still maintain
a warm guitar cabinet sound with the use of the SVC#” circuit.
USING THE BBE 651 GUITAR PRE-AMP WITH ANOTHER PRE-AMP
Other Preanp
]
Gultar Input Preanp Output
REMOTE EFFECTS REGHT OUT — LEFT QUT sm K:nxn
BBE 651
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Reverb. Delay. etc. @ @ @ @
Guitar Cabinet Guitar Cabinet
The BBE 651 Guitar Pre-amp may be configured with one or more guitar pre-amps to achieve new and exciting tones.
Experimentation is suggested to determine which pre-amp shall be first in the signal chain. Note: The svem circuit
should be in the "OFF" position when the BBE 651 is being used with guitar speaker cabinets.
USING THE BBE 651 GUITAR PRE-AMP IN A STUDIO APPLICATION
Reverb. Delay. etc.
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BBE 651
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Mixing Console
BBE 651
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Headphones
Use the BBE 651 Guitar Pre-amp with the SVC#" circuit in the "IN" position when recording direct. This proves to be a
great convenience in that "miking" a speaker cabinet becomes unnecessary. Note: The BBE 651 may connect directly to
the recorder to reduce the amount of equipment in the signal chain, thus preserving as much of the original tone as
possible.
10
USING THE BBE 651 GUITAR PRE-AMP WITH EXISTING GUITAR AMPLIFIER
Guitar
Reverb. Delay. etc. Tuner
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FS 500 Guitar Amplifier
When using the BBE 651 Guitar Pre-amp with another guitar amplifier, two methods of connection are available. The
first would be to connect the BBE 651 directly into the front input of the amplifier. This will allow the user to use both
the Tone Shaping Controls of the BBE 651 and the tone controls of the existing amplifier for a greater variety of tonal
capabilities. The second would be 10 connect the BBE 651 into the jack labelled "POWER AMP IN," or equivalent, to
utilize only the power amp and speaker output of the guitar amplifier. In either instance, the SVCI circuit should be in
the "OFF" position.
11
USING THE BBE 651 GUITAR PRE-AMP WITH A KEYBOARD
Keyboard |
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Reverb. Delay. etc. ++
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7
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P.A. Speaker P.A. Speaker
The BBE 651 Guitar Pre-amp may be used with instruments other than a guitar. Keyboards, for example, will have new life
and interesting results when run through the Crunch or Distortion Channels of the BBE 651. Remember the BBEs process
may be added to further emphasize the results. Note: The SVCM circuit may or may not be used depending upon the patch
or instrument being used with the BBE 651 Guitar Pre-amp.
12
Service
We recommend that if at all possible a BBE 651 which requires service be sent to our facility in Huntington Beach, CA.
We request that a "RETURN AUTHORIZATION" be issued by the dealer from whom you purchased the unit. lf this 1s
not possible, call BBE Sound, Inc. directly at (714) 897-6766, 10 obtain a "RETURN AUTHORIZATION." Include a copy
of the bill of sale with the unit when it is shipped to BBE Sound Inc., so that the service process can be expedited.
As the repair turnaround time is minimal, we request that the unit be sent to BBE Sound, Inc. This helps us add reliability
data to our files for use in designing future products.
Warranty
Warranty registration of the unit with BBE Sound Inc. is not necessary. However, it is strongly recommended that a copy
of the bill of sale is retained for future reference.
IT IS THE SOLE RESPONSIBILITY OF THE END USER TO PROVIDE THE BILL OF SALE OR OTHER MEANS OF
PROOF OF PURCHASE TO VALIDATE THE WARRANTY IF WARRANTY SERVICE IS REQUIRED.
The BBE 651 Guitar Pre-amp is warranted against defects in material and workmanship for a period of one (1) year from
date of purchase from BBE Sound, Inc. or from an authorized dealer.
During this period, we will repair units free of charge providing that they are shipped prepaid to BBE Sound, Inc., 5500
Bolsa Ave, Suite 245, Huntington Beach, CA 92649. We will pay return UPS shipping charges within the USA. All charges
related to non-US shipping, including customs clearance, will be billed. The warranty will be honored for the longer of either
90 days from the date of any service or the remainder of the original 1 Year factory warranty.
This warranty will be considered null and void by BBE Sound, Inc. if any of the following is found:
l. The equipment has been physically damaged.
2. The equipment shows signs of abuse.
3. The equipment has been electrically damaged by improper connection or attempted repair by the customer or a third
party.
4. The equipment has been modified without authorization.
5 The bill of sale indicates that the purchase date of the equipment is not within the warranty period.
All non-warranty repairs are warranted for a period of 90 days from the date of service.
BBE Sound, Inc. is NOT LIABLE FOR CONSEQUENTIAL DAMAGES. Should the pre-amp fail to operate for any reason,
our sole obligation is to repair the unit as described above.
Maintenance
Maintenance of the BBE 651 is limited to proper cleaning of the unit with a mild household cleaner such as Formula
409" ог Windex!. The chassis and cover are steel finished with a durable polyurethane paint, while the front panel is an
anodized aluminum extrusion.
There are no user replaceable parts and the unit should not be opened for any reason unless you are a qualified technician.
Calibration should be performed if parts are replaced or if a performance check-out indicates a problem with calibration.
Long term use has shown that over the life of the unit there is little or no drift of the components in the BBE 651 which
would cause a change in calibration. A conservative design philosophy has resulted in a piece of equipment which should
give years of trouble-free service.
13
SPECIFICATIONS
Power Requirements:
U.S. and Canadian Models: 100-120Vac, 50/60Hz, 20 Watts
Standard Model: 200-240Vac, 50/60Hx, 20 Watts
Fuse:
Replace with same type Fastblow fuse
U.S. and Canadian Models: 250Vac, 1/2A Fastblow type fuse
Standard Model: 250Vac, .125A Fastblow type fuse
Dimensions: 19"(W) x 8.5"(D) X 1.7"(H)
Weight: 651 7Ibs. (3.2kg) FS-500 3Ibs. (1.4kg)
Special Thanks to: Mike A., Ken J., Ross M., Joey T., Rich W., Trevor W., and friends.
14
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902-1012 Rev À 9/90

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