SWR Baby Baby Blue Owner's Manual page 17

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 size of the AC fuse for all countries is 3AG. Proper rating of the fuse is as follows:
United States (120V): 3 amp slo-blo
Japan (100V): 3 amp slo-blo
Europe (230V-240V): 1.6 amp slo-blo
A/C CORD RECEPTACLE
This receptacle accepts a standard A/C power cable (supplied with the Baby Baby Blue in the United
States) used with almost all current musical, professional and household electronic devices. We recom-
mend great care when packing up. If it does become misplaced, a replacement cable can be purchased 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.
TWO-POSITION SPEAKER ON/OFF SWITCH
Located on the rear of the speaker cabinet section, this two-position switch can defeat the entire speaker
system if desired. Its primary function is to allow for silent practicing in conjunction with a set of stereo
headphones, but it can also be used as an overall mute switch. The upper position (marked "On") allows
the speaker system to operate in its normal capacity. The lower position (marked "Off") defeats both the
speaker and the tweeter in the Baby Baby Blue.
THREE-POSITION TWEETER SWITCH
Located on the rear of the speaker cabinet section, this three-position slide switch allows you to choose
the mode of operation for the piezo tweeter. FULL will provide the full range, unattenuated signal through
the tweeter; –6dB will bring the tweeter level down slightly; and OFF will defeat the tweeter completely.
Note: If the Speaker On/Off Switch is set to "Off" the tweeter will be defeated along with the speak-
er, and therefore the tweeter switch will have no effect.
INTERNAL FEATURE: VACUUM TUBE (VALVE)
SWR installs a specially selected 12AX7A dual triode on the preamp circuitboard of every Baby Baby Blue.
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 microphonic (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 Baby Baby Blue should last one to three years, depending on usage.
A FEW WORDS CONCERNING HEAT
One of the most asked questions about our amplifiers is why they tend to get warmer than other amps.
The chassis of your amplifier can get quite warm during normal usage. This is especially true if you are
operating your Baby Baby Blue at a 4 ohm total impedance. This is because these low impedances are
introducing the least efficient condition of the unit (in terms of power drawn from the outlet in relation to
power produced in the speakers). The difference in these two figures can be as high as 300 watts. This
BABY BABY BLUE OWNER'S MANUAL • 15