Millennia | TCL-2 | Owner`s manual | Millennia TCL-2 Owner`s manual

READ THIS FIRST!
Any changes or modifications not expressly approved by MILLENNIA MEDIA, INC. could
void your authority to operate this equipment under the EC or FCC rules.
1. Copyright: You acknowledge that no title to the intellectual property in the TCL-2 is transferred to you.
2. Inspection: Inspect packing boxes, TCL-2, and cables for damage, unusual marks, or shortages. It is your responsibility to report damage, shortage, or misshipments in a timely manner.
Millennia Media and/or its dealers will not be responsible for claims arising from damage in
shipping, nor will claims for shortage or misshipments be honored, more than 10 days after
ship date.
3. Read this manual carefully and completely before attempting to use the TCL-2. Improper
operation could result in damage to product. It is the user's responsibility to understand the safe
use and operation of this device.
4. The shipping box of the TCL-2 system will include (1) Owner's Manual, (2) TCL-2, (3) a UL
approved power cord (110 V units only), (4) Owner's Registration Card. Fill out the Owner's
Registration Card and return to Millennia Media at your earliest ability.
The material contained in this manual consists of information that is property of Millennia
Media, Inc. and is intended solely for use by the purchasers of the equipment described in this
manual. Millennia Media, Inc. expressly prohibits the duplication of any portion of this manual
or the use thereof for any purpose other than the operation and/or maintenance of the equipment described in this manual without the express written permission of Millennia Media, Inc..
Under copyright laws, this manual may not be duplicated in whole or in part without the written consent of Millennia Media, Inc..
TCL-2 and Twin Topology are trademarks of Millennia Media, Inc. All other trademarks are
property of their respective holders. Serial numbers are located on the rear left side of each
unit. We suggest that you record the serial numbers in the space provided below. Refer to it
whenever you call an authorized Millennia Media repair facility or the manufacturer. Make sure
that you return your completed warranty card immediately.
Features and specifications subject to change without notice.
© 2007 Millennia Media, Inc., All rights reserved
Serial Nos. ______________________________________________________________
Purchase Date ___________________________________________________________
Where Purchased _________________________________________________________
TCL-2
SAFETY PRECAUTIONS
For your safety and the safety of others, be sure to read and understand all safety and operational instructions before attempting to use the TCL-2. WARNING: The TCL-2 internal circuitry carries lethal voltages. Carefully observe all warnings, precautions, and instructions on
the TCL-2 and as described in the instructions supplied with the unit.
1. WATER, MOISTURE, AND SPILLAGE
Do not attempt to use the TCL-2 in, near, or around water or in unusually moist environments,
such as near a sink or swimming pool. Prevent liquids or any other materials or objects from spilling or falling into the TCL-2 unit.
2. HEAT AND VENTILATION
Be sure to allow adequate ventilation to TCL-2 and avoid using or installing unit in close proximity to heat sources, such as heaters, stoves, radiators, power amplifiers, spotlights, or other heatproducing appliances or equipment.
3. POWER SOURCES AND POWER CORD PROTECTION
The TCL-2 Power Supply should be connected to a power source only of the type described in
the operating instructions or as marked on the Power Supply. Route the power cord so that it is
not likely to be walked on or pinched by having objects placed on it. Pay particular attention to
plugs, receptacles, and the point where the AC power cord exits the TCL-2.
4. GROUNDING
For your safety, it is extremely important that the grounding pin of the 3-wire power cable (included with unit) be inserted into a grounding type 3-pin power outlet. If you are unable to insert
the plug into an existing outlet, contact an electrician to install a properly grounded 3-pin power
outlet, preferably with OFI protection.
5. DAMAGE REQUIRING SERVICE
This unit should be repaired or serviced by qualified personnel whenever:
· The AC power cord has been damaged, or
· Objects have fallen or liquid has spilled into any TCL-2 unit, or
· The unit does not function properly or exhibits a marked change in performance, or
· The unit has been abused, dropped, or damaged, or
· The unit has been exposed to rain or moisture
6. SERVICING
Lethal voltages are found inside the TCL-2 chassis. The user should not attempt to repair or service
this unit. All servicing and/or repairs should be referred to Millennia Media.
If, after reading all instructions, precautions, and warnings, you have remaining questions, please
contact Millennia Media directly before attempting to use your TCL-2. Retain this owner’s manual
as a record of your purchase to aid positive identification in the event of loss.
TCL-2
QUICK START!
READ THIS!! The TCL-2 operates with lethal operating
voltages -- the voltage inside the TCL-2 can kill you. Never,
under any circumstances, remove the top cover. Refer to a
qualified electronics technician any and all servicing, tube
replacement, and other operations which require the top
cover to be removed.
Congratulations on your purchase of the Millennia Media TCL-2 with Twin Topology. The
TCL-2 is the result of meticulous listening tests on numerous circuit, topology, and packaging
designs. Your TCL-2 is a finely tuned instrument intended for critical professional applications
— we feel it is the world's most sonically neutral analog EQ. With the emergence of 24+ bit
digital audio, recording engineers are faced with a new requirement for undistorted dynamic
range. The TCL-2 meets this challenge exceptionally well.
Before connecting power to the TCL-2, assure that the rear panel voltage selection fuse block
switch is set correctly. In the USA, the TCL-2 is shipped with the voltage selection block set to
100-120 VAC. At this voltage setting, a pair of 1 amp 5 x 20 mm slow blow fuses have been
factory installed. If you change the voltage selection block to 200-240 VAC usage, be sure to
change both fuses to 500 milliamp (0.4 amp) slow blow types.
The TCL-2 enclosure measures 19" wide x 3.5" high x 12.5" deep and is designed for mounting
into a standard 2U, 19" equipment rack. If the TCL-2 is mounted in a road case or other rack
which is prone to strong vibration or shock, it is recommended that the rear of the TCL-2 be
supported or otherwise reinforced to withstand such conditions. The TCL-2 requires adequate
ventilation. To assure proper air circulation and operation, leave at least one rack space open
above and below the TCL-2.
The TCL-2 is designed on a common ground topology. For high quality operation, and for your
own safety and the safety of others, do not defeat the purpose of the earth grounding pin on the
A/C power cord!
TCL-2
TCL-2 REAR PANEL
(1) INPUTS "In 1 (Left), In 2 (Right)"
Conventional 3-pin female XLR input jacks for all balanced or unbalanced line level signals. Input impedance is greater than 10k ohms when "10 dB" gain range switch is engaged (+/- 10dB),
greater than 40k ohms when gain range switch is disengaged (+/- 20dB), and greater than 100k
ohms when optional balanced inputs are installed. Standard TCL-2 line input is unbalanced using pin 1 as chassis ground, pin two as signal, and pin 3 tied to audio ground.
(2) OUTPUTS "Out 1 (Left), Out 2 (Right)"
Conventional 3-pin male XLR output jacks. Output is unbalanced. Pin 1 is chassis ground, pin
2 is signal, and pin 3 is tied to audio ground. J-FET topology output impedance is 55 ohms.
Vacuum tube output impedance is 150 ohms.
(3) EARTH/AUDIO GROUND JUMPER
A barrier terminal which ties earth ground to audio ground. If ground "hum" loops are experienced when using the TCL-2, removing this jumper may help. Using this jumper, the integrity
of the chassis/earth ground connection is never compromised.
(4) AC VOLTAGE MAINS SELECTION "100-120" or "200-240"
A power entry module with a removable fuse holder block. This fuse holder block is selectable
for 100 to 120 Volt or 200 to 240 Volt worldwide mains powering. The fuse block contains two
fuses — one fuse is in series with the hot power line while the other fuse is in series with the
neutral power line. Both fuses must be installed. To change the mains voltage selection, remove
IEC power connector and assure that the TCL-2 is not connected to mains power. With a nonconductive tool, gently pry the fuse block away from the power entry module. Remove the
two fuses and replace both with type as shown below. Slide out the internal PC Board, turn it
over, and reinsert the PCB so that the desired AC mains voltage appears in the viewing window.
Double check that the fuses installed correspond to the AC mains voltage range which appears
in the viewing window. Gently push the fuse block back until flush and snug.
FUSES:
For 100-120 VAC mains, use 5x20mm, 1A, slow blow, 250V, Littelfuse 239 or equivalent.
For 200-240 VAC mains, use 5x20mm, 500 mA, slow blow, 250V, Littelfuse 239 or equivalent.
(5) POWER ENTRY "IEC Power Receptacle"
An IEC-type AC line-power receptacle for use with removable cords. Use only the power cord
provided with the TCL-2 unit or equivalent U/L approved type SV, SVT, SJ, or SJT AC power
supply cord. Do not defeat the third pin earth ground! If ground lifting is desired, remove the
Earth/Audio Ground Jumper strap (item number 3, above).
NOTE: Units configured for 200-240 do not have a power cord included. Contact your dealer
or distributor for a cable appropriate for your country.
TCL-2
115
44 55
TCL-2
______________
TCL-2 "Twincom"
Rear Panel
GROUND LIFT
33
PUSH
22
OUT 2
IN 2
1
1
PUSH
OUT 1
IN 1
TCL-2 FRONT PANEL
(1) THRESHOLD CONTROL “THRESHOLD”
Conductive plastic rotary potentiometer offering variable compression threshold. When fully
CCW, the compression threshold is least sensitive. Threshold range is approximately -20 dB to
+20 dB. Threshold is most sensitive when control is turned fully CW.
(2) ATTACK CONTROL “ATTACK”
Conductive plastic rotary potentiometer offering variable attack timing. When fully CCW the
fastest attack is achieved (2mS). When fully CW the slowest attack is achieved (lOOmS).
(3) RELEASE CONTROL “RELEASE”
Conductive plastic rotary potentiometer offering variable compression release timing. When fully
CCW the fastest release is achieved (lOOmS). When fully CW the slowest release is achieved (3
seconds).
(4) RATIO CONTROL “RATIO”
Conductive plastic rotary potentiometer offering variable compression ratio. When fully CCW
the lowest and most gentle ratio is achieved (1.4:1). When fully CW the highest and most pronounced ratio is achieved (30:1). A compression ratio of approximately 10:1 (or higher) is typically called “limiting.” All TCL-2 controls are available optionally with “detented” action, offering loggable resetability for mastering recall. Contact the factory for details.
(5) CHANNEL IN SWITCH “CH IN”
Pushbutton switch which selects channel status. When switch is depressed and corresponding
LED is illuminated, audio signal will be processed by dynamics functions. When switch is not
depressed and LED is not illuminated, audio signal is not processed by dynamics functions. This
is not a “hard-wire” bypass. Audio signal is always in the active circuit path regardless of this
switch’s status.
(6) METER FUNCTION SELECT SWITCH “METER ON=GR”
Pushbutton switch which selects meter function. When switch is depressed and corresponding
LED is illuminated, meter indicates the amount of gain reduction. When switch is not depressed
and LED is not illuminated, meter indicates output level (0 VU = +4 dBu).
(7) TWIN TOPOLOGY SELECT SWITCH “TT”
Pushbutton switch which selects the corresponding channel as a complete vacuum tube compressor or a complete solid state compressor. Not a gimmick. Twin Topology is designed around
two world-class, musically optimized Class-A amplifiers — one amplifier is based on twin triode
vacuum tubes, while the other is based upon all discrete J-FET servo amplifiers. Like having two
distinctly different compressors in one chassis. When switch is depressed and LED is illuminated,
the channel is operating as a solid state compressor. When the switch is not depressed, the channel is operating as a vacuum tube compressor. Because of the TCL-2’s unique shunt design, the
dynamic processing chain leaves little or no detectable signal path artifact when in-circuit.
TCL-2
______________
TCL-2 "Twincom"
Rear Panel
TCL-2
(8) OUTPUT GAIN CONTROL “OUTPUT GAIN”
Conductive plastic rotary potentiometer offering variable output gain level. When fully CCW the
output gain is fully attenuated (off). When fully CW, the output gain is at maximum. Up to 10 dB
of make-up gain is available when fully CW
(9) STEREO LINK SWITCH “STEREO LINK”
Pushbutton switch which selects the stereo link function. When switch is depressed and LED is
illuminated, both channels will respond to the channel with the highest compression activity.
When the switch is not depressed, each channel’s dynamics operates independently. The sidechain controls (threshold, attack, release, ratio) remain individually adjustable and are not stereo
linked. Stereo tracking can be tightened by reducing the ratio setting of the channel driving hardest. The following set-up procedure will help balance a linked stereo image.
(9A) STEREO LINK BALANCING
A) Apply a steady 1 KHz to one channel of the TCL.
B) Set the attack, release, and ratio controls for identical settings on both channels.
C) Make sure the stereo link switch is in the “Out/Off ” position.
D) With the meter in GR mode, increase the Threshold control until you reach the desired about
of GR as shown on the meter.
E) Depress the Stereo Link switch. Note... the amount of GR shown on the meter will probably
decrease. Simply increase the threshold until you again achieve the desired about of GR as shown
on the meter.
F) You should now see the same amount of GR on BOTH meters. If you do not, adjust the ratio
control(s) on one or both channels until you do.
(10) METER ZERO ADJUST “METER ZERO”
Trimmer potentiometer behind front panel hole which adjusts meter zero set-point. Adjust this
trimmer only after TCL-2 has reached a stable, warmed-up condition.
(11) METERS
Large (and very expensive!) Sifam true audio level meters offering superb ballistics and accuracy.
A custom back-lit dial face provides oversized numerals for clear readability. Backlighting also
provides a pilot light function.
(12) POWER SWITCH “POWER”
Rocker switch for switching AC line power on and off.
NOTE:
The TCL-2 Twincom is based on pure Class-A all vacuum tube and pure Class-A discrete all transistor amplifier designs. Both topologies perform best after reaching a stable, warmed-up condition. All TCL-2 factory adjustments have been performed when unit is fully warmed-up;
at least one-half hour after turning unit on. During TCL-2 warm-up period, user may find that
certain adjustments may drift slightly, including the 0 dB meter reading when in “GR” (Gain Reduction) mode.
TCL-2
TCL-2 GENERAL SPECIFICATIONS
THD + Noise, 20 Hz - 30 kHz
Frequency Response -3 dB (SS)
Frequency Response -3 dB (VT) Maximum
Input Level
Maximum Output Level
Input Impedance
Output Impedance (SS)
Output Impedance (VT)
Recommended Load (important)
Noise (20 Hz - 22 kHz)
Common Mode Rejection Ratio
XLR Polarity
< .01%, typ .002 %
Sub 2 Hz to beyond 100 kHz
Sub 2 Hz to beyond 100 kHz
+30 dBu (VT or SS)
> +32 dBu (VT or SS)
25,000 ohms (VT or SS)
< 5 ohms
< 300 ohms
> 300 ohms (SS), > 3,000 ohms (VT)
-87 dBu (SS), -82 dBu (VT)
> 50 dB, > 75 dB typical, lOOmV to 20 kHz
Pin 2 positive polarity. Pin 1 = ground
DYNAMICS PARAMETERS
Threshold Range
Attack Range
Release Range
Compression Ratio Range
Dynamics Bypass on Each Channel?
Meter Gain Reduction -or- VU Switch?
Stereo Link Switch?
Twin Topology Selection Switch
-20 dBu to +20 dBu, continuously adjustable
2 mS to 100 mS, continuously adjustable
00 mS to 3.0 sec, continuously adjustable
Min: 1.4 to 1, Max: 30 to 1, continuous
Yes
Yes
Yes
Switch In = FET Amplifiers
Switch Out = Vacuum Tube Amplifiers
ELECTRO-MECHANICAL SPECIFICATIONS
Power Consumption
Power Requirements
55 Watts, nominal
100VAC to 240VAC, 50/60Hz, selectable
Fuses (2 required)
2 ea 1A with 100-120VAC mains (5x20mm,
slow-blow, 250V)
2 ea 500mA with 200-240V mains (5x20mm,
slow-blow, 250V)
Internal DC Power
+350V+28V -28V +12V
Dimensions
Net Weight
19"Wx12.5”Dx3.5”H
25 pounds
Millennia Media reserves the right to change specifications, delivery, and pricing without notice.
TCL-2
10
TCL-2 PHILOSOPHY & DESIGN
The TCL-2 Twincom is an entirely balanced topology from input to output, meaning that pin
2 and pin 3 have their own, discrete, mirror-matched amplifiers. Even when the TCL-2 is used
with unbalanced signals, the internal circuitry remains balanced. These mirror-matched amplifiers are comprised of both vacuum tubes and discrete J-FETs, each topology selectable via a front
panel Twin Topology switch.
Dynamics control is achieved via a passive precision-matched resistor network in which a
matched LDR array (light dependent resistor) is used as a shunt element between the positive
and negative legs of the network. Thus, the audio present at the output of the unit has not
passed through an LDR or VCA. Avoiding LDRs and VCAs in the audio path results in improved (more accurate, minimally colored) sonic performance.
Because of TCL-2’s unique design qualities, it is best suited for applications offering a balanced
high-level (+4) source and a balanced bridging load (3,000 ohms, or greater). Operating the
unit in a -10 dBu nominal environment may not provide adequate drive for optimal use. When
wired to an unbalanced destination, the output XLR connector pin 3 should remain floating
(unconnected). See the suggested unbalanced interface cable wiring configurations shown later
in this manual.
All TCL-2 design decisions have been made towards the goal of absolute sonic neutrality and
timbre purity:
1.) No audio transformers. The vast majority of professional vacuum tube audio equipment
uses audio transformers. Yet, as someone once said, “there is no transformer that sounds like
no transformer.” For this reason. Millennia avoids audio path transformers and relies on other,
“less colorful,” coupling techniques.
2.) Lower, tighter gain and threshold structure. Because less inherent amplifier gain generally
translates into heightened sonic reality, the TCL-2 is designed with a modest 20 dB of overall
gain; lOdB available as make-up gain. The threshold range (-20 to +30 dB) is similarly structured for optimal sonic performance. Due to this optimized gain structure, compression or
limiting of very-low-level signals (less than -20 dBu at the input) is not possible, whereas compression or limiting of very-high-level signals (+30 dBu at the input) is possible.
3.) No bypass relays or audio path switching. Input signals are always in-circuit, thus avoiding
the need for switched / relay signal bypass (read: audio path switch points degrade over time).
When the TCL-2 is “bypassed,” only the actual dynamics side-chain control is removed from
circuit. The audio signal remains in-circuit (via tube or solid state amplifier).
4.) Single amplifier design. In keeping with Millennia’s minimalist philosophy, the TCL-2 is
designed around a single audio path amplifier. This amplifier acts as input buffer, dynamics
follower, and output driver. The amplifier is mirror imaged so that single but mirror-matched
amplifiers follow both pin 2 and pin 3, respectively.
TCL-2
DATE:
PROJECT:
STUDIO:
ARTIST:
SONG:
LOG:
NOTES:
TCL-2
CH IN
THRESHOLD
20
2.0S
100mS
ON=GR
METER
2mS
70
6:1
TT
0.1S
2:1
30:1
OUTPUT LEVEL
3.0S
15:1
1.5S
50
0.7S
RATIO
RELEASE
ATTACK
METER
ZERO
20:1
20
1
VU
3 2 1 0
+
1
2
3
20
-
5
10 7
+
1
2
3
2
LINK
STEREO
CH IN
THRESHOLD
20
100mS
ON=GR
METER
2mS
50
ATTACK
70
0.1S
TT
0.7S
1.5S
2.0S
6:1
2:1
15:1
30:1
RATIO
OUTPUT LEVEL
3.0S
RELEASE
METER
ZERO
20:1
This page can be downloaded from our web site in the
Adobe PDF format at http://www.mil-media.com/tcl2tp.pdf.
Copyright 1999 Millennia Media, Inc. All rights reserved.
POWER
TCL-2
Music & Media Systems
Millennia
Millennia Music & Media Systems
4200-B Day Spring Ct.
Placerville, CA 95667 USA
T 530-647-0750 F -9921
E-MAIL: info@mil-media.com
WEB: http://www.mil-media.com
Millennia Music & Media Systems - TCL-2 Template
VU
3 2 1 0
Twin Topology Opto-Compressor/Limiter
5
10 7
T W IN C O M
11
12
WARRANTY
Millennia Media will repair this product, free of charge, in the USA, in the event of defect of
materials or workmanship for one (1) year following date of purchase. This warranty is extended only to the original purchaser. This limited warranty covers failures due only to defects
in materials and workmanship which occur during normal, intended use and does not cover
damage which occurs in shipment or failures which are caused by products not supplied by Millennia Media. This limited warranty does not cover failures which arise from accident, misuse,
abuse, neglect, mishandling, misapplication, faulty installation, improper adjustment, alteration
or modification of product, incompatibilities, line-power surges, acts of God, or service performed by anyone other than Millennia Media or its authorized agent. Vacuum tube failures are
not covered under warranty.
LIMITS AND EXCLUSIONS
There are no express warranties except as listed above. Millennia Media shall not be liable for
special, subsequent, incidental, consequential, or punitive damages, including, but not limited
to: damage to recordings, microphones, mixing consoles, or any associated equipment, downtime costs, loss of goodwill, or claims of any party dealing with purchaser for such damages resulting from the use of this product. All warranties, express and implied, including the warranties of merchantability and fitness for a particular purpose are limited to the applicable warranty
period set forth above.
Some states do not allow the exclusion or limitation of incidental or consequential damages, or
length of time an implied warranty remains in effect. As such, the above exclusions may not apply. This warranty gives you specific legal rights and you may also have other rights which can
vary from state to state.
4200-B Day Spring Court
Placerville, CA 95667-9500
T 530-647-0750
F 530-647-9921
sales@mil-media.com
http://www.mil-media.com
The TCL-2 is hand-crafted in the USA
Manual printed in the USA
TCL-2
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