Td -1 front p anel – Millennia TD-1 Twin Topology Half Rack Recording Channel User Manual
Page 8
TD-
Twin Direct
1
offers Millennia’s Twin Topology
®
high voltage vacuum tube DI amplifier
-and- all discrete J-FET transistor amplifier. Either topology is select-
able with the Twin Topology (TT) select switch. More information on this
unique technology is found in the “Input TT” section, below.
LINE INPUT + REAMP
®
INPUT Balanced Female XLR
Standard 3-pin XLR input (Pin 2 hot) which will accept any balanced or
unbalanced line-level signal. A 20 dB pad (attenuator) is included for
ultra-hot signals, but because of the TD-1’s extremely high native line
input headroom (+23 dBu) this pad should rarely be required (see “Pad”
switch, below).
This input employs a discrete-hybrid, solid-state amplifier topology and
fixed input impedance (6,900 ohms x 2). One common use of this input
will be playback of recorded electric guitar or electric bass program.
Guitar and bass program can be recorded and then played back at a
later date directly into a guitar amplifier using TWIN DIRECT’s patented
REAMP feature. This allows an audio engineer to achieve the original
“coupling” characteristics of a guitarist and live guitar amplifier without
the guitarist’s presence, thus allowing more time for experimentation with
different guitar amps, room tones, and mic technique at any future time.
(See “REAMP” section, below.)
Of course, TWIN DIRECT’s Line Input is ideal for any other line-level
source, including mixer outputs, recording device outputs, samplers,
DAWs, synths, DACs, active instruments, outboard gear such as com-
pressors and stand-alone instrument preamplifiers.
DI INPUT IMPEDANCE SELECT Dual pushbutton switches
A pair of switches which allow selection of three input impedances on the
¼” Instrument Input (above). Acoustic instrument pickups are especially
sensitive to load impedance. Each input impedance will couple instru-
ments with varying sonic performance. Adjust these switches with each
new source to find the most musically satisfying setting. In some cases,
all three impedance settings will give very similar sonic results. In other
cases, the differences will be obvious. Remember, “musically correct” is
an artistic production judgement — only your ears can tell you which input
impedance is optimal for your instrument and artistic goals. Settings are
LOW (aprox 470 Kilohms), MEDIUM (aprox 2 Megohms), HIGH (aprox
10 Megohms). HIGH input impedance is achieved with both switches
disengaged. DI input impedance is selectable only on DI input, not on
mic or line inputs. 2M is recommended as the default setting.
TD
-1 FRONT P
ANEL