Tiptop Audio CB808 Manual
Tiptop Audio
Keyboard
CB808
Read below 📖 the manual in Italian for Tiptop Audio CB808 (4 pages) in the Keyboard category. This guide has been helpful for 4 people and has been rated 4.5 stars on average by 2 users
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CB808
TIPTOP AUDIO
CB808
Introduction.
The CB808 is Roland's TR-808 cowbell sound generator adapted for modular
synthesizer use. The front panel contains all of the controls found on the original TR-808
drum machine, allowing you full control over the sound’s volume levels to mix with other
drums, and accent levels. In addition to that, the CB808 includes a pitch-modulating LFO
with control over the LFO rate and modulation depth.
About the Making of the CB808.
The CB808 is a one-to-one clone of the original circuit found in Roland's TR-808 drum
machine. During the design phase, we created additional features only when
implementation would not compromise the original signature sound, add excessive
costs, or sacrifice panel space. Cloning a circuit that was designed and produced in the
early 80's was not an easy task. A variety of obstacles including availability of the original
parts, the modern SMT manufacturing process, the dierences in +/-12V Eurorack power
versus the +/-15V of the original 808, and far many more were addressed in the creation
of this module. To learn more about the process of remaking the sound generator in this
series please refer to the BD808 user guide.
Let’s get started.
To start using the CB808, just plug a gate signal into the GATE IN and plug the CB OUT
to your sound system and set the LEVEL half way.
Dynamics and Gain.
Level Explained:
The CB808 oers an enhanced output gain stage over the original 808 design. This
addition allows the output signals to get very hot so that anything flowing from the
module will be overdriven, generating additional harmonics through distortion and
clipping of the sound. This capability is one of the most useful ways to get more sounds
out of this circuit. This eect is easily noticeable by sending the audio output with both
LEVEL and ACCENT set to max into line level instruments such as computer audio
interfaces, outboard multi-eects, mixers, and even low level devices like guitar pedals,
mic preamps etc. This enhanced gain stage will also make any synthesizer module
operate at peak levels while adding interesting harmonics or digital artifacts in the case
of digital processing modules. On the other hand, if all you want is a nice, clean 808
sound, setting the range of the LEVEL knob somewhere between 0 to 70% will cover that.
Dynamics and Gain:
Accent and Levels:
Dynamic Accent and Level control of any drum sound in the mix is a big part of making a
beat sound right. Dynamic Accent provides emphasis on a particular note through
loudness. In analog circuits like the CB808, the accent pulse physically "hits" the internal
VCA circuit harder and provides not only a louder sound but also slightly more attack
(much like if you were to hit a real drum harder or softer with a drum stick).
While the original 808 has one global accent knob aecting all of its sounds
simultaneously, the CB808 (and all other drum modules in this series) oers an
independent accent level control. This feature adds far more dynamics than what was
possible with the original machine.
Accent Explained:
The accent input is a gate/trigger signal. While the accent input is not in use, the
incoming gate input is routed (normalized) to both the accent input and the gate input.
This serves for two purposes:
1. To allow you to reach the hottest drum sound possible even when there is no accent
input signal connected.
2. It makes the ACCENT knob act as a fine control of the output gain level. This is very
useful in situations where the level knob range is too coarse for setting precise levels in
a mix with other drum sounds.
Connecting a gate signal into the accent input will break the internal routing mentioned
above and will allow for independent control over accent regardless of the incoming
gate signal. In this case as long as there is no accent signal present, the drum sound will
be set to the minimum accent level set internally, and once the accent input gets hit by a
gate signal, the drum sound will get louder in proportion to the accent level set by the
accent knob. In short: the higher the knob setting, the larger the dierence will be in gain
levels between the accented notes and the un-accented notes.
Pitch-Modulating LFO explained.
In the CB808 we have added an analog pitch-modulating LFO that was not originally
found in the TR-808. It is used to modulate the pitch of the cowbell sound, giving it a
slightly unbalanced and inconsistent texture, yet in the boundaries of the original sound
without extremes and noise. This eect can be turned on or completely o using the
DEPTH control and the RATE control is used to change the LFO speed.
Product Specifications
| Brand: | Tiptop Audio |
| Category: | Keyboard |
| Model: | CB808 |
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