Ampeg Bass Combo B2 User Manual

Owner’s Guide
for the
B2/B2R
Bass Amplifier
Made in the U.S.A.by 

2T
ABLEOFCONTENTS
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Features  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Important Safeguards and Precautions  . . . . . . . . . .3
The Front Panel Controls and Their Use  . . . . . . . .4
The Rear Panel  . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Some Suggested Settings  . . . . . . . . . . . . . . . . . . .6
Rack Mounting (B2R only)  . . . . . . . . . . . . . . . . . . .6
Troubleshooting  . . . ....

3
CAUTIONRISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTIONRISQUE DELECTROCUTION
NE PAS OUVRIR
ATTENTION: POUR REDUIRE DELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE NEST REPRABLE
PAR LUTILISATEUR. POUR TOUTE REPARATION, SADRESSER A UN
TECHNICIEN QUALIFIE.
VORSICHTELEKTRISCHE SCHLAGGEFAHR
NICHT OFFENEN
VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER...

4
The Front Panel Controls and Their Use
B2/B2R Bass Amplifier
0 +12dB
-12dB 40Hz 8kHz5kHz 2kHz 900Hz 600Hz 300Hz 150Hz 80Hz
EQ LIMIT PEAK -15dB
ON
GAIN PAD BASS ULTRA MID TREBLE MASTER LIMITER INPUT
ON
POWER
0
12876541091131213
1. 0dB (INPUT):The signal output from an
instrument (active or passive) or a line level
signal may be connected here by means of
a shielded instrument cable.
2. 15dB PAD:This switch, when
depressed, attenuates the input signal by
15dB. Attenuation allows the Gain control
(#4) to...

5
The Rear Panel
B2/B2R Bass Amplifier
MODEL:
SERIAL:
    LINE:         V ~          Hz
WATTS:             MAXB2R
Q2ZZ650022
120     60  
 
15161819202123 24221417
14. FAN:This temperature controlled, vari-
able speed fan draws cool air into the
amplifier, which forces heat out through the
exhaust vents. Never block the vent holes
or the fan opening.
15. FUSE:This protects the unit from dam-
age due to overload conditions or power
line surges. If the fuse blows, replace it
only with the same size and...

PEAK -15dB
GAIN PAD BASS ULTRA MID TREBLE MASTER
PEAK  -15dB
GAIN PAD BASS ULTRA MID TREBLE MASTER
PEAK  -15dB
GAIN PAD BASS ULTRA MID TREBLE MASTER
PEAK  -15dB
GAIN PAD BASS ULTRA MID TREBLE MASTER
6
Some Suggested Settings
Rack Mounting (B2R only)
JAZZ: ROCK:
COUNTRY:
FUNK “POPPING:”B2/B2R Bass Amplifier
The setting of the Gain control depends on your particular instrument. The
Master should be set to produce the appropriate output volume level. The
Graphic EQ can be used to tailor the amplifier to...

7 B2/B2R Bass Amplifier
Troubleshooting
In the unlikely event that your B2/B2R should malfunction, take a few minutes to troubleshoot it before you call for ser-
vice. You can save yourself a lot of time and sometimes money by doing it yourself, and often the cure for the problem
is something quite simple. 
If the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg dealer for service infor-
mation. Also, you should refer your amp to an authorized service center for...

Ampeg reserves the right to change specifications without notice.
Ampeg is proudly Made in America. ©1999 SLM Electronics, 1400 Ferguson Avenue, St. Louis, MO 63133 U.S.A.
P/N 47-577-03 • 10/99
B2/B2R Bass Amplifier
Technical Specifications
OUTPUT POWER RATING350 Watts RMS, 4 ohm load, 120VAC
200 Watts RMS, 8 ohm load, 120VAC
POWER REQUIREMENTS
Domestic:120VAC, 60Hz, 310VA
Export:100/120VAC, 50/60Hz, 310VA
230-240VAC, 50/60Hz, 310VA
TONE CONTROL RANGE
Bass:±8dB @ 50Hz
Ultra Mid:±8dB @ 500Hz...