8912 HHB TLA VTC Brochure

8912 HHB TLA VTC Brochure
15/8/00 10:31 am
®
TLAudio
Page 2
n a world crowded by
today’s characterless
consoles, the VTC (Valve
Technology Console) is
something very different.
Designed and manufactured
by British tube specialists
TL Audio, the VTC offers the
supreme advantages of their
critically acclaimed tube
circuitry to combine
classic warmth with
functionality that
meets the demands of
modern music
production. Tubes are
not simply a token
addition in the VTC.
They form an essential
part of the channel,
monitor, group and
master section signal
paths, ensuring an
exceptionally open and musical
sound, which perfectly
complements digital audio
recorders and DAWs.
I
If you love music, you’ll love
the VTC.
TL AUDIO VTC TUBE CONSOLE
#8912 HHB TLA VTC Brochure
#8912 HHB TLA VTC Brochure
15/8/00 10:39 am
Page 3
TL AUDIO VTC
Tube Console
TL Audio
INPUT VTC
CHANNEL
Input Stage
The VTC’s mic preamp is one of its great strengths.
Combining a solid state stage with an ECC83/12AX7A
secondary tube stage gives the VTC mic pre the ideal
combination of low noise performance (-127dBu) and rich
tube warmth. Preamp facilities include variable input gain
(16 to 60dB), 48V phantom power, phase reverse and a
90Hz low cut filter (12dB/octave). A switch selects mic
or line sources, and the input gain control, phase reverse
and low cut filter are active on either mic or line input.
Like the channel preamp, the tape return preamp stage
features an ECC83/12AX7A tube stage plus a +/- 20dB
trim control and an internal -10/+4dB level matching link,
allowing easy interfacing with any conceivable tape or
hard disk recording system. A ‘FLIP’ switch
reverses the inputs, allowing the tape return
signal to be routed through the main channel
signal path, while at the same time feeding the
channel signal through the Mix B section –
ideal for mixdown.
Auxiliary sends
Six mono auxiliary sends are accessed via four
level controls, since aux send controls 3 & 4
on each channel can be shifted to feed sends
5 & 6. Auxiliary sends 1 & 2 are set post
fader, while auxes 3 & 4 (and hence 5 & 6)
can be switched to be pre or post fader – and
additionally can also be fed from either the
channel or Mix B signal paths. A separate
stereo auxiliary send (7 & 8) is perfect for use
as a headphone cue send or standard effects
send: it has both a level and a pan control, and
can also be switched pre/post fader and fed from
either channel or Mix B paths.
Each send can be muted by individual on/off
switches: thus preventing any low level bleedthrough of effects and allowing an instant A/B comparison
of dry and processed signals.
EQ section
Central to the channel strip is an extremely smooth,
transparent and powerful four band EQ section employing
two fully parametric mids. The HF and LF bands both offer a
shelving type curve, giving +/- 15dB at 12kHz and 80Hz
respectively. The lower and upper mids provide superb
VTC bussing
Each of the VTC’s 8 group faders is designed not only
to feed their relevant group outputs, but also to feed
a number of tape outputs simultaneously. For
example, the signal from group fader 1 will route
to each of tape outputs 1, 9, 17, 25, etc.,
provided the ‘BUSS’ switches on those
numbered channels are depressed (though
the channel itself functions normally with
whatever signal is being routed through
it). Similarly group fader 2 will feed tape
outputs 2, 10, 18, 26 and so on.
overlap and flexibility: both bands offer +/-15dB and variable
Q between 0.8 and 7 (1.25 to 0.15 octaves), with the LM
operating between 50Hz and 2kHz and the HM reaching
from 500Hz to 18kHz.
Mix B section
The Mix B section (traditionally called the monitor) is based
around a high quality Alps 60mm fader, allowing accurate
control of the tape return signal. Solo and Mute switches
are also provided along with a pan control. The Mix B
signals are all mixed and fed to a separate pair of outputs in
the master section (allowing an entirely separate mix to be
processed), but they can also be fed in the normal way
into the main stereo mix via a switch and level control in
the master section.
Some or all of the channel EQ can be applied to
the Mix B signal: the ‘HF/LF EQ’ switch places
the HF and LF controls into the Mix B path,
while ‘HM/LM EQ’ does the same for the mids.
Three more switches complete the Mix B
section. ‘STAT’ and ‘AUTO’ switches are
designed to work with a third party automation
system: the ‘STAT’ switch allows local status
switching while ‘AUTO’ allows a channel’s
automation stage to be bypassed if required.
Finally, the ‘SRCE’ switch routes the main
channel signal into the Mix B section as well,
allowing a separate mix of the main channel
signals to be set up on the Mix B faders.
Channel routing and fader section
The main channel fader is a high quality
100mm Alps type, and pan, mute and solo
functions are also provided. ‘STAT’ and ‘AUTO’
switches perform the same functions for the
channel as those in the Mix B section, while
routing to the eight groups and L/R buss is
provided via a bank of switches alongside the channel
fader. The ‘BUSS’ switch extends the flexibility of the VTC’s
routing system: when the ‘BUSS’ switch is activated on a
channel, it feeds the output of the relevant group fader
through to that channel’s tape output (see VTC bussing).
When the ‘BUSS’ switch is released, the channel tape
output functions as a standard post-fader direct output.
This arrangement allows the VTC to feed multitrack tape
or hard disk without any re-patching.
#8912 HHB TLA VTC Brochure
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Page 4
®
TLAudio
TL Audio
VTC
MASTER
SECTION
Auxiliaries
Master aux send level controls are provided which allow complete attenuation through to
+15dB of gain, along with AFL and mute switches. Six stereo returns are included with high
quality Alps 60mm faders controlling the return level, working in conjunction with a balance
control. Each return has individual mute and solo switches, plus routing to the headphone
sends: each return can individually route to both phones outputs via a separate level control.
Phones matrix
The VTC has two separate phones outputs, each with a level control and solo facility. Each
phones output can be fed by any combination of control room output, mix B output, aux 3/4,
aux 7/8 and ‘external’.
Control room section
The control room output can be fed from any combination of L/R Mix, Mix B, 2TA, 2TB (both
two track returns) and ‘external’. A separate PFL trim control is provided (with +/- 20dB of
gain), and switches allow an alternate L/S output to be fed, and the control room output to be
checked for mono compatibility. Two solo modes are provided on the VTC: PFL or Solo in Place.
Studio output section
A separate section allows the studio output to be fed from any combination of sources: L/R
Mix, Mix B, 2TA, 2TB or ‘external’. A ‘FOLLOW C/R’ switch allows the studio output to
automatically follow the settings of the control room source switches, and two more switches
allow the Studio output to be solo’d or muted. Finally, a level control is provided to set the
overall studio output level.
Talkback
The talkback section allows the talkback mic to be fed to any combination of ‘tape’ (i.e groups
and stereo mix), studio output, phones 1 and phones 2. A separate talkback level control is
provided, along with an illuminated talkback switch which can be internally set for latching or
non-latching operation. When activated, the talkback switch automatically dims the control
room output by 12dB.
Oscillator
An internal oscillator can be switched to generate 1kHz or 10kHz tones, with a separate level
control and on/off switch. The oscillator routes to both groups and L/R Mix.
Mix B master
The Mix B signals can be routed solely to the Mix B outputs, and also to the main L/R mix
via a separate switch. An associated level control governs the amount of signal sent to both
destinations.
Group section
Eight 100mm Alps group faders are provided, each of which can be solo’d or routed to the
L/R mix. When fed to the L/R mix, each group can be routed in mono equally to both left
and right busses, or routed hard left or right.
Master fader
A 100mm Alps stereo fader allows control of the stereo mix level, and like the channel faders
is fitted with ‘STAT’ and ‘AUTO’ switches for use with third party automation systems.
Musical by design
The VTC is available in 16 to 56 channel configurations, in
8 channel sections. Tubes form an essential part of the signal
path at several key points within the console: every Channel
and Mix B preamp incorporates a tube stage, as do the
Group, Mix B and Stereo master mix amplifiers, and each
tube stage is run from a 250V DC stabilized power
source. All internal signal busses are balanced for
maximum signal integrity and the PSU is a custom
designed linear supply, with local power regulation
provided in each 8 channel section. Other standard
features include 1.6mm glass fibre PCBs, 1%
metal film resistors, over-rated tube stage
capacitors and gold plated ceramic tube bases.
The frame is assembled in 8 channel
sections, allowing a small frame desk to be
expanded at a later date if required.
#8912 HHB TLA VTC Brochure
15/8/00 10:30 am
Page 1
TECHNICAL DATA
TL Audio VTC Tube Console
TL AUDIO VTC
INPUT IMPEDANCE (ELECTRONICALLY BALANCED)
Mic input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5k Ohms
All other inputs . . . . . . . . . . . . . . . . . . . . 10k Ohms minimum
OUTPUT IMPEDANCE
All balanced outputs . . . . . . . . . . . . . . . . . . . . . . . 100 Ohms
All unbalanced outputs . . . . . . . . . . . . . . . . . . . . . . 47 Ohms
MAXIMUM OUTPUT LEVELS
Direct, Group, L/R (balanced) . . . . . . . . . . . . . . . . . . +26dBu
L/R (unbalanced) . . . . . . . . . . . . . . . . . . . . . . . . . . +20dBu
Insert sends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +20dBu
MAXIMUM GAIN
Mic input to direct output . . . . . . . . . . . . . . . . . . . . . . +70dB
Line input to direct output . . . . . . . . . . . . . . . . . . . . . +32dB
FREQUENCY RESPONSE
Mic input @ 40dB gain to direct output . . 20Hz to 20kHz +0, -1dB
MIX NOISE
Main L/R output (reference to +4dBu nominal)
Master fader down . . . . . . . . . . . . . . . . . . . . . . . . . . . . -97dBr
Master fader @ 0dB . . . . . . . . . . . . . . . . . . . . . . . . . -89dBr
with 32 channels routed, faders @ 0dB, channels open . . . -75dBr
GROUP NOISE
(reference to +4dBu nominal)
Fader down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -94dBr
Fader @ 0dB, no channels routed . . . . . . . . . . . . . . . . -92dBr
with 32 channels routed, faders @ 0dB, channels open: . . . - 75dBr
INPUT NOISE
Mic Input Equivalent (EIN): . . . . . . . . . . . . . . . . . . . . . -127dBu
(22Hz to 22kHz, 150 Ohm termination, 60dB gain)
THD+NOISE
(From 10Hz to 40kHz @ 0dBu)
Direct output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02%
Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.03%
L/R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.03%
CROSSTALK
Line input to adjacent channel . . -100dB @ 1kHz, -83dB @ 15kHz
CHANNEL CONNECTIONS
Mic input . . . . . . . . . . . . . . . . . . . . . . . . . . . . XLR (balanced)
Line input . . . . . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Monitor return . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Internally jumpered for -10/+4dBu
Insert point . . . . . . . . . . . . . Stereo jack (tip=send, ring=return)
Tape/Direct output . . . . . . . . . . . . . . . . Stereo jack (balanced)
Internally jumpered for -10/+4dBu
MASTER CONNECTIONS
Main output . . . . . . . . . . . . . . . . . . . . . XLR (balanced, +4dBu)
and mono jack (unbalanced, -10dBu)
Main insert point . . . . . . . . . . Stereo jack (tip=send, ring=return)
Studio output . . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Control room output . . . . . . . . . . . . . . . . Stereo jack (balanced)
Phones outputs . . . . . . . . . . . . . . . . . Stereo jack (unbalanced)
Group outputs . . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Group insert points . . . . . . . . Stereo jack (tip=send, ring=return)
Auxiliary sends . . . . . . . . . . . . . . . . . . Mono jack (unbalanced)
Auxiliary returns . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Mix B output . . . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
2 track returns . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
Internally jumpered for -10/+4dBu
External input . . . . . . . . . . . . . . . . . . . . Stereo jack (balanced)
OPTIONS
METERBRIDGE
All VTC consoles are supplied with a standard meter bridge,
which offers VU metering of all eight groups plus the stereo L/R
master. Each meter has an associated peak LED which
illuminates at approximately 18dB of output level.
An optional meter overbridge is available which provides 16
segment bar graph metering of each channel and the L/R
master. A global switch on the meterbridge allows either tape
output or tape return to be monitored. This optional meter bridge
is fitted above the standard bridge, and connects via 25 way
D-type connectors on the rear of each 8 channel section.
PATCHBAY
The VTC can be supplied with a high quality optional 19" metal
bantam jackfield, employing individually screened hand wired
cabling for maximum sonic integrity. The patchbay is fully modular
for easy maintenance.
AUTOMATION
The VTC has been designed to allow easy integration of third
party fader/mute automation systems, which can be factory
fitted prior to shipment if required.
STAND
Optional stands are available to support every frame size.
Due to a policy of continuous development, the above specifications are subject to change
without notice. The figures represent typical values for signal paths stated. E&OE
Dimensions in inches (console only without patchbay, excluding stand and packaging):
16 channel: 11.8"(H) x 46.5"(D) x 38.4"(L)
24 channel: 11.8"(H) x 46.5"(D) x 50.4"(L)
40 channel: 11.8"(H) x 46.5"(D) x 74.8"(L)
48 channel: 11.8"(H) x 46.5"(D) x 86.6"(L)
32 channel: 11.8"(H) x 46.5"(D) x 62.6"(L),
56 channel: 11.8"(H) x 46.5"(D) x 98.8"(L)
www.hhbusa.com
HHB Communications USA LLC · 1410 Centinela Avenue, Los Angeles, CA 90025-2501, USA
Tel: 310 319 1111 · Fax: 310 319 1311 · E-Mail: [email protected]
HHB Communications Canada Ltd · 260 King Street East, Toronto, Ontario M5A 4L5, Canada
Tel: 416 867 9000 · Fax: 416 867 1080 · E-Mail: [email protected]
Trademarks are the property of their respective owners.
Designed and manufactured in the UK by TL Audio. Distributed in the USA, Canada and South America by HHB Communications.
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