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Pendulum SPS-1 Operating Manual
SPS-1 Stereo Preamp - Operating
Manual
Introduction
Congratulations! You have purchased the finest preamp system for acoustic
instruments available today. But you already know that, so we won't bore you
with the details. Suffice it to say the sound quality and versatility of the SPS-1
are unmatched, both on stage and in the studio. Since most of you would rather
plunge right in and give it a listen, rather than read a novel, we've taken a
different approach to explain how to use the SPS-1. If you're already
technically savvy, you can head back to the Condensed Operating Instructions
that precede this introduction. It is a capsule description of the main features of
the SPS-1, and describes what all the buttons and knobs and jacks do in their
simplest form. It should get you up and running immediately. If you need more
information, or would like to learn about some of the less obvious things you
can do with the SPS-1, read on.
Pickup Combinations - A Primer
Since we've been in the business of putting together preamp systems for
acoustic instruments longer than anyone else, we've come across most of the
configurations that players would like to use with their instruments. The bottom
line is that nearly everyone wants something different, and needs a different
approach to achieving it. For that reason, we've tried to incorporate as many
features as you're likely to need both now and in the future. Since most players
find that one pickup can't do the entire job, the SPS-1 is designed specifically
for blending a pickup with something else, be it another pickup, an internal
mic, or an external mic. What combination you choose depends a lot on your
playing style - flatpicking or fingerpicking, playing solo instrumental music,
accompanying vocals, or playing with other instruments at high sound pressure
levels. Even whether you play in small clubs or with a concert sound system.
The choices you make also depend on whether you're playing live or in the
studio. Here are a few of the most popular combinations, and why people use
them.
Two External Mics
The faint of heart need not apply! If you're a purist, and you're playing solo
guitar in a studio environment, this is the combination you're most likely to use.
However, it requires a pair of high quality condenser mics, and a great
sounding room. Since the SPS-1 has two studio-quality mic preamps,
parametric EQ and stereo output, it's the ideal preamp for going directly to DAT
or digital multitrack. Perfect for recording you solo record yourself. No one
would think of using this combination live, however, and expect to be heard.
Unless, of course, you're doing a classical concert in a great European hall.
http://www.pendulumaudio.com/SPS1Manual.html
30.07.14 14:27
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Summary of Contents for Pendulum SPS-1

  • Page 1 But you already know that, so we won't bore you with the details. Suffice it to say the sound quality and versatility of the SPS-1 are unmatched, both on stage and in the studio. Since most of you would rather plunge right in and give it a listen, rather than read a novel, we've taken a different approach to explain how to use the SPS-1.
  • Page 2 By using a single pickup or two pickup Preamp Module in one channel of the SPS-1, and an external mic in the other, you can have complete control over this blend on stage. Many players find that piezo transducers flatter light fingerstyle playing, but are harsh when the strings...
  • Page 3 EQ on the SPS-1. The advantage, of course is that leakage is no longer a problem. You won't get the sound of the pick or your fingers hitting the strings, but at high sound levels this isn't a great sacrifice.
  • Page 4 · Set the Monitor level to 10:00. Set the Input and Master level controls to 12:00. Turn the Pan controls to the center (12:00). · Plug the SPS-1 into an ac outlet and turn on the power switch on the rear panel.
  • Page 5 · You should now hear a blend of Channel 1 and the external mic. Set the Input controls on the SPS-1 for the blend of the two channels that you desire. Be sure to keep the signal level between the limits set by the Sig and Peak LEDs on the front panel.
  • Page 6: Rear Panel

    Pendulum SPS-1 Operating Manual 30.07.14 14:27 The SPS-1 can also be used with instruments with active electronics, with or without the preamp module. When used with the preamp module, set up as above. For use without the preamp module: · Set the Input level controls for the Channel inputs to 0.
  • Page 7: Front Panel

    Pendulum SPS-1 Operating Manual 30.07.14 14:27 switch. In order to connect this output into a 3 pin XLR-type input, use a 1/4" stereo to 3 pin XLR adapter. Or you can make your own adapter cable by wiring the tip to Pin 2, ring to Pin 3, and ground to Pin 1. For unbalanced operation, use a 1/4"...
  • Page 8: In/Out Switch

    Parametric EQ into the signal path. Otherwise, the EQ is bypassed entirely. Three Band Parametric EQ Why have we chosen to use a parametric EQ in the SPS-1? Well, regardless of where a pickup or mic is positioned (though some locations are much better than others), certain overtones will be exaggerated at the expense of others.
  • Page 9 Pendulum SPS-1 Operating Manual 30.07.14 14:27 Master and Monitor Outputs In this section we'll discuss the outputs available on the SPS-1, and which features you'll be most likely to use. Master Output Section Pan: The pan controls determine the left (ccw) and right (cw) position in the master stereo mix for Channel 1 (top) and Channel 2 (bottom).
  • Page 10 Just connect the L and R inputs from your stereo effects device to the L and R send output jacks on the rear panel of the SPS-1. These are unbalanced, low impedance outputs that are capable of driving any effects device. Next, connect the L and R outputs from your stereo effects device to the L and R return input jacks.
  • Page 11 If you're planning to use the SPS-1 onstage with a sound reinforcement system, setting up this way first is important: it will help you distinguish problems with the sound from your guitar and pickup from deficiencies in the sound system.
  • Page 12 Don't be afraid to experiment to find what sounds the best to you. Technical Extras In case you were wondering, here are a few of the reasons why the SPS-1 sounds so good! · The latest in high speed/low noise circuitry is used throughout.
  • Page 13: Limited Warranty

    All specifications are subject to change without notice. Limited Warranty Pendulum Audio, Inc. warrants to the first purchaser of a new Pendulum SPS-1 Stereo Preamp System that the unit is free of manufacturing defects in materials and workmanship for a period of one (1) year from the date of purchase.
  • Page 14 This warranty does not cover damage due to: misuse, abuse, modification, accident or negligence. The warranty does not apply if the unit is repaired or altered by persons unauthorized by Pendulum Audio, Inc. in such a manner as to injure, in Pendulum's sole judgment, the performance, stability or reliability of the unit.

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