ENGLISH
8
ENGLISH
9
AVT150/AVT150H & AVT275 Front Panel Features
The first 10 programs offered are all Reverbs. Reverberation effects recreate the natural echo
reflections found in physical environments such as halls and rooms or, in the case of plate reverbs, a
mechanically vibrating metal plate. These echoes are extremely complex in nature and are,
therefore, notoriously difficult to recreate. In developing these 10 programs we've gone to great
lengths to ensure that none of the harsh digital ‘graininess’ normally associated with some digital
reverbs is present.
Below is a brief description of each of the 16 DFX programs available:
AVT150/AVT150H & AVT275 Front Panel Features
1
Hall A: this is a large, bright sounding, concert hall. “Wembley Arena, are you ready to
rock!?”
2
Hall B: warmer sounding than Hall A, this program is perfect for adding depth and character
to clean and acoustic tones.
3
Hall C: a medium sized hall with 12ms of delay before the reverb starts.
4
Room 1: a hardwood studio with lots of early reflections. Perfect for acoustic type sounds.
5
Room 2: perfect for adding some subtle ambience.
6
Room 3: warmer sounding than Room 1, perfect for clean or acoustic work.
7
Plate 1: a bright, transparent plate sound ideal for lead work.
8
Plate 2: warmer sounding than Plate 1, this program is great for adding sustain, especially
on clean and acoustic tunes.
9
Plate 3: an accurate emulation of a vintage tube plate reverb. As this program has very little
low end it is great for adding ‘cut’.
10
Gated Reverb: by ‘chopping-off’ the end of the reverb’s decay ‘tail’ via a Noise Gate, this
program is great for spicing-up chord stabs without cluttering up your sound.
11
Chorus: splitting the signal and then mixing the dry signal with a detuned version creates this
popular effect. To add to the subtle ‘widening’ this creates, the detuned signal is modulated
by an LFO (Low Frequency Oscillator) which causes the detuning to vary. The result is a
subtle, lush sound that is equally effective on both clean and dirty tones.
12
Flange: similar to chorus but much more ‘jet’ like in nature.
13
Delay: this creates an echo repeat of the original signal. The delay time is adjustable in 10
millisecond (ms) increments and can be set to be as long as 1270ms which is well over 1
second.
14
Chorus/Room: as the name suggests, this combines Chorus and a large room Reverb.
15
Chorus/Delay/Room: if program 14 isn't dramatic enough for you then this is definitely the
one for you, as it adds Delay to the Chorus & Reverb mix!
16
Modulation: this effect is similar to the chorus effect but is less subtle and can be used to
create rotary speaker-like effects.
19 Overdrive Tone Controls
Your AVT is equipped with rotary Bass,
Middle, and Treble EQ controls which are
shared between the two Overdrive Channels,
OD1 and OD2. This EQ section boasts a tone
circuit identical to the one used in legendary
Marshall valve amplifiers such as the 100 Watt
‘Plexi’ and the JCM800 2203, making it a
foundation stone for that instantly recognisable
and unsurpassable ‘Marshall Sound’. As was
the case with the Clean channel’s EQ network,
these controls are interactive and, as a result,
allow endless tonal possibilities.
Note:
Remember that in addition to these
three controls, further tonal adjustment is also
afforded by the Scoop button (17) and also the
Master Presence control which is explained
later (21).
II. The Master Section
These controls adjust the power amp
section of your AVT and determine the overall
Volume and Presence of the amplifier.
20 Master Volume
Once you have set the relative volumes of
your AVT's channels, this control governs the
overall volume of the amplifier.
21 Master Presence
A feature normally only found on
expensive valve amplifiers, the Presence
control affords you increased high frequency
control by altering the power amplifier’s
feedback. Increasing the Presence control will
emphasise high-end ‘fizz’ in overdriven tones
and top-end ‘sparkle’ in clean sounds.
III. FX Section
A. Parallel FX Loop
Your AVT boasts a rear-panel mounted
Parallel FX loop for use with external effects
devices. This FX loop is Mono in the case of
the AVT150 and AVT150H and Stereo (Mono
Send, L & R Returns) in the case of the
AVT275 (see ‘Rear Panel Features’ Section for
more details).
22 FX Loop Mix Controls
(Clean & Overdrive)
When an effects unit is hooked-up to the
aforementioned FX loop, the top control adjusts
the FX Mix for the two OD channels and
turning it clockwise increases the amount of
effect you hear - from ‘dry’ (0) to ‘wet’ (10).
The bottom FX Mix control does the exact
same thing for the Acoustic Simulator and
Clean channels.
Please note that the FX mix on your
external processor should be set to maximum
(i.e. ‘wet’).
B. Internal Digital FX
As mentioned in the introduction of this
manual, the AVT150, AVT150H and AVT275
each feature two separate DFX (Digital Effects)
sections - the upper DFX section is for the two
Overdrive channels, OD1 and OD2, and the
lower section is for the Clean & Acoustic
Simulator Channels. Each DFX section boasts
16 on-board effects and three controls - DFX
Mix, Adjust and Program.
We chose the particular effects algorithms
to give you a comprehensive palette of natural
sounding options. When developing the DFX
section, our aim was to enhance the overall
sound of the amplifier and, most importantly,
allow the effects to work with you instead of
masking your all-important tone underneath
layers of artificial sounding digital signal
processing.
