Crest Audio SmarTube ST2 Datasheet

Features
• Two separate full channel strips in a single rack-space unit
• Front panel mic/line jacks
• Separate insert send and return jacks
• Solid-state, tube-sound processor (SmarTube™)
• Expandability – daisy-chaining of multiple units
• Superior coating and finishing technology
• Affordability
• Multicolor 10-segment LED meters
• Full parametric EQ (low-mid and high-mid)
• Low and high shelving controls
• 24dB/oct LCF (low cut filter)
• "Sizzle" control
• Balanced and unbalanced I/O
Applications
• Broadcasting
• Installations
• Live sound
• Recording
• Anywhere a high quality mic preamp is needed
ST2 Dual Ch. Mic
TM
SmarTube
TM
Description
The ST2 is a two-channel, single-rack-space voice proces-
sor/channel strip. Each of the two channels consists of four
functional sections: microphone and line preamplifier, 4-
band parametric equalizer, output level/pan/meter/sum, and
SmarTube tube-sound processor. A variety of inputs, out-
puts and insertion points allow each of these sections to be
used separately or together. With its versatility, comprehen-
sive features set and expandability, the ST2 is intended to be
used for both recording and live performance applications.
Each of the two channels provides an XLR low-impedance
microphone input and a high-impedance 1/4" line/instru-
ment (DI) input with jacks conveniently located on the front
panel and duplicated on the rear panel. Both inputs have
separate gain controls. The balanced XLR mic input has
a –20dB Pad, Phase-reverse (polarity), a +48V phantom
power switch with LED, and a switchable, fourth-order
high-pass filter. An insert unbalanced I/O with separate
1/4" send and return jacks is provided on the back panel.
Equalization consists of a low and high shelving section
and two fully adjustable Low-Mid and High-Mid parametric
filters. There is a level, pan and SmarTube blend control
with bicolor LED, mono/stereo, sizzle and mute (with LED)
switches and post-level, pre-pan unbalanced direct output.
Metering comprises of a 10-segment multiple color LED
bar graph array that indicates the level on the direct output
and a separate signal-presence LED.
The two channels can also be assigned independently to
either the A/B stereo bus or only A or B bus via the
stereo/mono switch. In stereo position the channel 1 signal is
panned between the A and B bus. In mono position the chan-
nel 1 signal is sent only to the A bus, bypassing the Pan pot.
In stereo position the channel 2 signal is panned between the
A and B bus. In Mono position the channel 2 signal is sent
only to the B bus, bypassing the pan pot. unbalanced (0dBu-
1/4") and balanced (+4dBu-XLR) outputs are provided on
each of the A and B summing buses. A pair of additional, bal-
anced (+4dBu-1/4") I/Os enable the expansion capabilities of
the ST2. Several units can be daisy-chained, each next
becoming a master for the preceding ones.
The ST2 has a built-in power supply and the line connec-
tion is through an IEC connector on the back panel. A mas-
ter power switch with on/off LED indicator is located on the
right side of the front panel.
Preamp
S E R I E S