Ampeg Bass heads SVPPRO User Manual

Owners Guide for the Owners Guide for the
Bass Preamp Bass Preamp
10k 4k 2k 1k 50 300 180 90 40
PEAK / MUTE
-15dB
MUTELO
BRTHI
EQACTIVE /
 PEAK
ONLEVEL +8dB
-10dB 0 +12dB
-12dB
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ PAD /
 MUTE
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE GRAPHIC EQ MASTER POWER INPUT
Ampeg® is Proudly Made in America Ampeg® is Proudly Made in America 

2Important Safeguards and Precautions:
All Ampeg products are designed for continuous safe operation, as long as common sense is used and steps are taken to
help avoid certain problems. Abiding by the following rules can help prevent damage to your preamp, yourself and others.
•The preamp is equipped with a three-pronged AC power cord. To reduce the risk of electrical shock, NEVER
remove or otherwise attempt to defeat the ground pin of the power cord.
•Connect the preamp ONLYto a properly grounded AC...

3
An Introduction to your new Ampeg SVP-PRO Bass Preamp
The harmonically rich sound and legendary performance of the AMPEG SVT are redefined in
the SVP-PRO. This dynamic preamp delivers unsurpassed quality, reliability and tonal flexibility
and offers the classic vibrancy of tubes. The SVP-PRO is the preamp section of our much-
respected SVT-2 PRO. All of the features and controls of your SVP-PRO are covered in detail in
this owner’s guide. We recommend that you read it before you use the preamp....

4
SVP-PRO Bass Preamp
The Front Panel Controls and Their Use
10k 4k 2k 1k 50 300 180 90 40
PEAK / MUTE
-15dB
MUTELO
BRTHI
EQACTIVE /
 PEAK
ON
LEVEL +8dB
-10dB 0 +12dB
-12dB
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ PAD /
 MUTE
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE GRAPHIC EQ MASTER POWER INPUT
15 23671314489101112182019161715
1. INPUT: The signal output from an
instrument  (active or passive) or a line
level signal may be connected to this
jack by means of a shielded instrument
cable.
2. MUTE: This...

5
SVP-PRO Bass Preamp
The Rear Panel
MADE IN THE U.S.A. BY
SLM ELECTRONICS
1400 FERGUSON AVENUE
ST. LOUIS, MO 63133AC LINE IN
115V      230VSVP PRO
2556AMODEL #
SERIAL #
FOOT
SWITCHPREAMP OUT EFFECTS TUNER
OUTTRANSFORMER BAL. OUT
PRE
POST
RETURN SEND
212223242526272829
21. AC LINE IN: Firmly insert the sup-
plied AC power cord into this socket
until it is fully seated. Plug the male
end of the cord into a grounded AC
outlet. DO NOT DEFEAT THE
GROUND PRONG OF THE AC
PLUG!
22. AC LINE SELECTOR: This...

6
Some Suggested Settings*
SVP-PRO Bass Preamp
PEAK / MUTE
LO
BRTHI
EQ
PEAK / MUTE
LO
BRTHI
EQ
PEAK / MUTE
LO
BRTHI
EQ
PEAK / MUTE
LO
BRTHI
EQ
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE
ULTRA LO /
 BRIGHTULTRA HI /
 GRAPHIC EQ
GAIN DRIVE BASS MIDRANGE FREQUENCY TREBLE
IN
OUT
OUT
OUT
ADJUST UNTIL PEAK...

7
SVP-PRO Bass Preamp
Changing the Tubes
The performance characteristics of tubes are degraded in direct proportion to how often and under what conditions the
amplifier is used. Preamp tubes typically last longer than power tubes. When a preamp tube wears out, the preamp may
squeal, get noisy, lose gain and sensitivity, or just quit working. A service center can determine which tube(s) may need
replacing. To gain access to the tubes in the SVP-PRO, the top must be removed. Tube replacement should only...

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 47-546-13 • 05/99
Technical Specifications
TOTAL SYSTEM GAIN76dB, @1kHz w/levels up, tones flat; -3dB @30Hz, 15kHz
TONE CONTROL RANGE
Bass:±12dB @ 40Hz
Midrange:+12dB, -15dB @ Frequency selected (220, 450, 800, 1.6k or 3kHz)
Treble:±12dB @ 4kHz
Ultra Low:+3dB @ 40Hz, -12dB @ 500Hz
Ultra High:+8dB @ 8kHz
Bright:+7dB @ 2kHz 
GRAPHIC EQ...