Ampeg Bass Amplifier B15E User Manual

							OWNER’SGUIDE 
						

							Thank  you  for  purchasing  the  Ampeg  B-15E Portaflex  Bass  Cabinet.
Designed specifically for use as an extension cabinet for our newly-reis-
sued B-15R Portaflex Bass Amplifier, this cabinet features the same rugged
construction and quality components, and is even sized the same for the
best possible “match” visually as well as sonically. In order to obtain the
best results with this cabinet, please read this guide before its use. 
FEATURES:
•Ampeg Vintage 15” Speaker•H.F. Horn w/Level control
•Removable Dolly Board w/Casters•Proudly Made In America
USEOFTHECABINET:
While the B-15E is simple to install as an extension cabinet, there are a few things which
must be taken into account in order to obtain the best results:
1: Match the output impedance of the amplifier to the overall impedance of the cab-
inet configuration.
The B-15E has a nominal impedance of 8 ohms. When used in parallel with the B-15R’s
cabinet (also 8 ohms), set the amplifier’s Impedance Selector to 4 ohms. (If the B-15E cab-
inet is to be used by itself, set the amplifier’s Impedance Selector to 8 ohms.)
2: Do not exceed the power rating of the cabinet.
The B-15E has a power handling capability of 150 watts. Do not use this cabinet with
amplifiers of higher output power ratings unless the volume is kept low enough to avoid
overpowering the cabinet.
3: Use the High Frequency Attenuator to control the tweeter.
The B-15E’s input jackplate, located on the rear of the cabinet, has a 3-position switch
to control the tweeter output level. The far left position is “off”, the center position is -6dB
and the far right position is no attenuation. Use the tip of a flatblade screwdriver to set this
switch to the position which best suits your taste and playing style.
4: Use the Full Range Input jacks to connect the cabinet.
The B-15’s input jackplate also has a pair of 1/4” input jacks, labeled “Full Range Inputs.”
Use these jacks to connect the cabinet to your amplifier or another speaker cabinet. The
jacks are wired in parallel. 
						

							THE INPUT PLATE (on the rear of the cabinet):High Frequency Attenuator:
Controls the output level of
the tweeter.Full Range Inputs:
Connects the cabinet
to the amplifier. 
						

							P/N 47-667-02 • 07/97TECHNICALSPECIFICATIONS
SPEAKERSIZEANDRATINGAmpeg Vintage 15”, 8 ohm, 150 watt, 
2” voice coil, 56 oz magnet 
High Efficiency Piezo Tweeter, 8 ohm, 150 watt (w/network)CROSSOVERFREQUENCY3kHz  POWERHANDLING150 watts RMS
DIMENSIONS 24”W x 16-1/2”D x 24-1/4”H 
w/out caster board3 7 - 1 / 4 ”H w/caster boardWEIGHT:71 lbs
Ampeg continually develops new products, as well as improves existing ones. For this reason,
the specifications and information in this publication are subject to change without notice.The B-15Eis covered with Ampeg’s durable Diamond Blue Tolex material: wipe it clean with a lint-free cloth.
Never spray cleaning agents onto the cabinet. Avoid abrasive cleaners which could damage the finish.Ampeg is proudly Made in America.
©1997 SLMElectronics,
1400 Ferguson Avenue,
St. Louis, MO 63133 U.S.A.