Technical specifications – Ampeg B3158 User Manual
Page 8
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 47-588-03 • 10/99
B3/B328/B3158 Bass Amplifier
Technical Specifications
OUTPUT POWER RATING
B3, B328:
150 Watts RMS, 4
Ω
load
B3158:
Low Freq - 100 Watts RMS, 4
Ω
load
High Freq - 50 Watts RMS, 8
Ω
load
POWER REQUIREMENTS
120VAC, 60Hz, 170VA
100/115VAC, 50/60Hz, 170VA
220-240VAC, 50/60Hz, 170VA
TONE CONTROL RANGE
Bass:
±8dB @ 50Hz
Ultra-Mid:
+5, -17dB @500HZ
Treble:
+17, -22dB @ 5KHZ
GRAPHIC EQ RANGE
±11dB @ 40Hz; ±8dB @ 80, 150, 300, 600, 900, 2kHz; ±9dB @ 9kHz
GAIN
66dB typical, tones @ center
SIGNAL TO NOISE RATIO
75dB typical
INTERNAL SPEAKERS
B3
B328
B3158
Low Frequency:
Size/Type:
15” Ampeg Custom (1) 8” Polypropylene (2)
15” Ampeg Custom (1)
Magnet:
56 oz
30 oz
56 oz
Voice Coil:
2.5”
1.5”
2.5”
Impedance:
4
Ω
8
Ω
4
Ω
High Frequency:
Size/Type:
N/A
Hi-Efficiency Piezo (1)
8” Polypropylene (1)
Magnet:
30 oz
Voice Coil:
1”
Impedance:
8
Ω
SIZE AND WEIGHT
B3
B328
B3158
(W x H x D)
20”x26”x13.5”
20”x18.75”x13.5”
20”x34.5”x14.5”
68 lbs.
57 lbs.
84 lbs.
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