Peavey Spectrum Bass II User manual

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manual

Table of Contents
A Intended to alert the user to the presence of uninsulated "dangerous voltage" within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of electric shock to persons.
A Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the product.
CAUTION: Risk of electrical 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.
WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before using this
appliance, read the operating guide for further warnings.
SpectrumBass II

Contents
Table of Contents
QUICK START... 2
ABOUT THIS MANUAL.^ 4
Chapter 1 Introduction . 5
FEATURES.*5
Chapter 2 Overview . .. $
THE FRONT PANEL.<5
THE BACK PANEL.5
GETTING TO KNOW YOUR BASS II.^ 7
Chapter 3 Connections . g
SETUP..."*’*’* 8
CONNECTIONS.9
Chapter 4 Basic Operation . 1 2
TERMS YOU SHOULD KNOW.12
MIDI MODES AND MULTI SETUP.12
CONTROLLER USAGE.13
GLOBAL BEND RANGE (PRG, 0-24).14
PRESET CONTROL.
AUTOFLOW.' ^ 14
REINITIALIZATION. 1 4
Chapter 5 Beyond the Basics . 75
DID YOU KNOW.15
HOW SOUND IS GENERATED. 1 5
The Spectrum Bass II Synthesizer Architecture ..15
Oscillators.15
Wave Start Offset.1<5
Oscillator Sync. 1 5
DCAs .17
Pan . 1 7
Filters .17
MODULATION AND THE SPECTRUM BASS II..1.’.....".."..".. 18
Keyboard Scaling.19
Sample and Hold.19
Portamento.20
Low Frequency Oscillator (LFO).21
Envelopes. 2 1
MODULATION SOURCES/SAMPLE AND HOLD INPUT SOURCES.22
WAVEFORM REFERENCE LIST.22
Chapter 6 Advanced use with a PC 1600 . 2 3
Patch Editing Descriptions.24
Appendix A MIDI Implementation . 2 6
Appendix B Parameters Saved on Power Down . 2 7
Appendix C System Exclusive . 2 8
Hi
Peavey Electronics Corporation

Chapter 1 Introduction
QUICK START
Hey, we know not everyone likes to read manuals or even needs to read manuals, that’s why we are providing this
quick: start section. We want to make using your new Peavey equipment an easy, enjoyable experience.
▼ To get started quickly
1 . The first thing you need to do is to connect the Spectrum Bass II to your system configuration. Here are some
things to check first:
Make sure your amplification system is turned off.
Turn the Spectrum Bass ITs Volume knob fully counterclockwise.
^ Plug the MIDI Out from your keyboard to the MIDI In on the Spectrum Bass H
Connect the mono/right audio output of the Spectrum Bass II to the input of your keyboard amplifier. (If
possible use a stereo connection; you won’t be disappointed. Connect the left and right audio outputs to
your amplification system with mono cables or use a stereo cable connected to the stereo/left audio output.)
Connect the power jack of the Spectrum Bass n to an electrical outlet using the 16 - 16.5 volt AC 1000 mA
adapter provided.
Turn on your amplifier.
See the diagram below.
DPM* 4
KB" 300
2
Spectrum' Bass II

Chapter 1
Introduction
2 . It is now necessary to properly set up your Spectrum Bass n to send and receive MIDI information. To do this:
Setting the AUDI Mode
fa Press the button labeled Mode until the Poly LED lights. This puts you into poly mode. The poly mode allows
you to send and receive MIDI data on one channel only.
Setting the MIDI Channel
fa Press and hold the button labeled Channel; while holding this button, press the A or ▼ button until the
MIDI receive channel for the Spectrum Bass II matches the MIDI transmit channel of your keyboard. If in
doubt, try channel 1.
3 . Okay. Now it’s time to play.
fa Start playingyour keyboard; as you play, turn the Spectrum Bass P’s Volume knob clockwise until you reach
the desired volume.
fa The Spectrum Bass IPs display will show the current patch number. To select a different patch, use the A
and ▼ buttons.
4 . That's it!
Peavey Electronics Corporation
3

Chapter 1 Introduction
ABOUT THIS MANUAL
Can it be? We thought that nobody ever read manuals anymore! Since we seem to be mistaken in our belief that
nobody reads manuals, we should probably give you some information that is useful. We’ll even try to present it
in an interesting manner (won’t that be unusual).
This manual covers several distinct sections. These sections are arranged in the same manner that a user may want
to learn them.
We have provided a Quick Start section, in case you suddenly decide that you don’t really want to read the manual.
Here is a brief description of what can be found in each section.
Chapter 1 , Intro, provides a brief introduction to the Spectrum Bass II along with the Quick Start guide.
Chapter 2 , Overview, provides a quick overview of the front and back panels of die Spectrum Bass H
Chapter 3 , Connections, shows some of the more common connection schemes for the Spectrum Bass n.
Chapter 4 , Basic Operation, provides you with some of the more basic knowledge needed to use the Spectrum
Bass II, such as: setting the MIDI channel, selecting the MIDI mode, change patches and tuning the unit.
Chapter 5 , Beyond the Basics, explains some basic synthesis information as used by the Spectrum Bass H
Chapter 6, Advanced Operation, provides power users with the information they need to interact with the Peavey
PC ™ 1600 .
Appendix A, MIDI Implementation, is a chart showing the MIDI implementation that the Spectrum Bass II
provides.
Appendix B, Parameter Saved on Power Down, provides a list of parameter settings saved when power
is turned off.
Appendix C, SysEx, provides system exclusive formats.
Spectrum ™ Bass II
4

Chapter 1
Introduction
Chapter 1 Introduction
Congratulations and thank you for purchasing the Spectrum ™ Bass H The Spectrum Bass II was designed to offer
the ultimate in bass sounds to the user. The sounds range from smooth flowing fredess to nasty synth basses in
16-bit resolution (24-bit internal), full MIDI compatibility, 24 oscillators, 12-voice polyphony, and 6-part multi-timbral
capability.
The Spectrum Bass n features classic bass waves, digital bass waves, and a selection of 4 and 5 string bass waves.
Couple this with Peaveyh dynamically modulated resonant filters and the results can range from realistic to totally
tortured, screaming sounds.
The Spectrum Bass n was designed to answer die need for bass synthesizer sounds in a package with current MIDI
technology and state-of-the-art synthesizer capabilities.
FEATURES
*•“ 2 MB 16-bit acoustic, classic analog and digital bass waveforms
*•* 256 presets; 192 ROM/64 RAM
24 oscillators (2 oscillators per voice)
12-voice polyphony
6-part multi-timbral
Hard Sync
12 dynamically modulated resonant filters
Portamento
Sample and Hold
<•* AHDSR envelopes for a classic feel
Custom patches for the Peavey PC ™ 1600 MIDI Controller ready to be downloaded from the
Spectrum Bass II
"•* Digital display of:
Program number
fa Fine tune
fa Transpose
fa Pitch bend range
fa MIDI channel
fa MIDI receive acknowledge
fa Number of channels recognized in multi mode
fa Autoflow enable
Peavey Electronics Corporation
5

Chapter 2
Overview
Chapter 2 Overview
16VACA/
1 AMP
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^^A RNIN <^^
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: to reduce the
RISK OF FIRE OR ELECTRIC SHOCK
DO NOT EXPOSE THIS EQUIPMENT!
TO RAIN OR MOISTURE.
AVIS: RISQUE DE CHOC ELEC
TRlQUE-NE PAS OUVRIR.
MIDI
m
to to ito
OUT THRU
THE FRONT PANEL
1. Volume Knob
The Volume knob adjusts the overall volume of the Spectrum Bass H
2. LED Display
This is a three-digit, seven-segment display.
3. Up and Down Arrow Buttons ( ▼ and A)
These buttons are used to inc/dec through programs and to edit parameters.
4. Channel Button
The Channel button is used to select the MIDI receive channel. Channels 1-16 are available.
5. Transpose Button
The Transpose button is used to adjust the pitch. The Spectrum Bass II may be transposed any number of
semitones to ±2 octaves.
6. Fine Button
The Fine button is used to perform fine tune adjustments to the pitch. The range is ±99 cents.
7. Mode Select Button/LEDs
The Mode Select button is used to select the MIDI mode. There are six choices available: Omni, Poly, Multi,
Legato, Poly-Legato, and Multi-Legato. It is also used to edit the number of MIDI channels the unit will respond
to in multi-timbral mode.
THE BACK PANEL
1. Power Jack
Use only the 16-16.5 volt AC 1000 mA adaptor provided. (Peavey Part #00710160)
Caution : Use only the Peavey 16-16.5 volt power supply provided with this product. If the original power
supply must be replaced, consult your Peavey dealer or the factory for die correct replacement. Failure to use
6
Spectrum " Bass II

Chapter 2
Overview
5
3 4 6 7
5 6
the correct power supply could result in fire, shock hazard, extensive circuit damage, decreased performance,
or non-operation.
2. MIDI Out Jack
This is a standard 5-pin DIN jack used for sending MIDI overflow data and/or SysEx data from the
Spectrum Bass II to receiving unit(s).
3. MIDI Thru Jack
This is a standard 5-pin jack used to echo MIDI data received at the MIDI In jack. This means that the receiving
unit(s) will receive an exact copy of the MIDI data the Spectrum Bass II received.
4. MIDI In Jack
This is a standard 5-pin jack used for receiving MIDI data from the sending unit.
5. Mono/Right Jack
This is a standard l A" mono output jack. The output from this jack is the Right channel if a plug is inserted into
the Stereo/Left jack and is the summed Left and Right channels if no plug is inserted into the Stereo/Left jack.
6. Stereo/Leftjack
This is a standard Vf stereo output jack. The output from this jack is stereo when used with a stereo cable, with
the Left channel on the tip, and the Right channel on the ring.
Throughout the rest of the manual we will refer to the Spectrum Bass II as the Bass n.
GETTING TO KNOW YOUR BASS II
It’s pretty simple to tell whecj the Bass II is turned on; when it’s plugged in it should be on.
Using the Bass II is nearly as easy. The following sections provide information on: connecting the Bass n, sound
editing, front panel editing, MIDI modes and Multi setups, controller usage, autoflow, and of course the ever popular
MIDI implementation and system exclusive appendices. Enjoy!
Peavey Electronics Corporation 7

Chapter 3
Connections
Chapter 3 Connections
SETUP
When you power up the Bass II for the first time, you should see the program LED display come to life. In the display
will be three numbers, i.e., 001. This represents the current preset (or patch) number. Once you have connected
the Bass n to your MIDI keyboard (either using the diagrams in this chapter or the Quick Start guide) you should
set the MIDI receive channel. Set the MIDI receive channel by pressing and holding the button labeled Channel,
then use the ▼ or ▲ button to move to the desired channel. You probably want to set the MIDI mode as well. To
do this, press and release the Mode Select button until the LED above the desired mode is lit. If you are unsure which
mode you want, try using OMNI. For a more complete description of the MIDI modes see Chapter 4.
The rear panel consists of your stereo/mono outputs and MIDI In, Out and Thru jacks, and power input jacks.
To see if MIDI is being received, send MIDI data (notes, mod. wheel, etc); there should be a little dot in the bottom
right comer of the LED display showing the reception of any MIDI data.
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SpectrumBass II