SWR Black Beauty Bedienungsanleitung Seite 18

LINE FUSE (A/C OR MAINS FUSE)
This fuse is provided to protect the internal electronics against power surges, 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. Do not defeat the purpose of
this feature by using a higher rated fuse as it can void your warranty.
Proper rating of the fuse is as follows:
United States (120V): 3AG, 7A, 250V slo-blo
Japan (100V): 3AG, 8A, 250V slo-blo
Europe (230V-240V): 20mm x 5mm, 4A, 250V slo-blo
A/C CORD RECEPTACLE
This receptacle accepts a standard A/C power cable used with almost all current musical, professional and household electronic
devices. We recommend great care when packing up. If your unit is not in a rack case, put the cable in your instrument or accessory
case or leave it attached and looped around one of the rack handles. If it does become misplaced, a replacement cable can be pur-
chased at almost any music or computer store.
Note: The rating for this cable is 3 conductor, 10 amperes minimum. Look for this rating on the cable. Make sure the cable is
plugged in all the way in both the amp and the wall socket.
REMOVABLE CASTER WHEELS
Your Black Beauty comes with a set of four, heavy-duty, removable caster wheels. SWR uses only closed shaft sockets so as to pre-
vent air leaks or unwanted noise when the enclosure is in use. To install the caster wheels on your Black Beauty, carefully turn the unit
upside down (or on its side) so that the caster base/sockets are visible. Insert the shaft of each caster wheel into a socket on the
underside of the Black Beauty. When all four wheels are firmly in place, return the Black Beauty to its upright position and you're
ready to roll. You can leave the casters in place during performance, but it's recommended that they be removed so as to allow the
Black Beauty's speaker compartment to couple to the floor, which can be helpful in extending its bass response. Please note that the
ball bearing type caster wheels provided with your Black Beauty may require periodic replacement depending on usage and care.
Replacement caster wheels can be purchased from the SWR Service Department.
INTERNAL FEATURE: VACUUM TUBE (VALVE)
SWR installs a specially selected 12AX7A dual triode on the preamp circuitboard of every Black Beauty. If this tube needs replacing,
we recommend that you replace it with a similar high quality product. This tube will need replacing only if it becomes noisy or micro-
phonic (which sounds like glass tinkling in the background of certain notes), or completely fails (causing no signal or signal at very
low levels). The tube in your Black Beauty should last one to three years, depending on usage.
FINAL ENGINEERING SUMMARY
The two preamp gain stages utilize a specially-selected 12AX7A. The tone controls incorporate I.C.'s, and the power amp is designed
with extremely high quality bi-polar devices. Each type of device was chosen for its performance and reliability in the application
used. All primary electrical components are U.L. approved, and SWR uses Beldon Cable for all shielded wire. All units are assembled
by hand and individually soundtested in the U.S.A. at our factory in Southern California.
SUGGESTED SETTINGS
The following page includes examples of tone control options for various styles of music. These settings are intended for use as a start-
ing point for dialing in your own individual sound, so feel free to make adjustments based on your own playing style, instrument and
speaker cabinet configuration. After you find combinations you like, don't forget to try adding in the SubWave™...as much as you feel is
necessary.
18 • BLACK BEAUTY