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The Mic Preamps are
transformer coupled (hand wound by Manley Labs) with 50 dB of gain provided
by pure discrete transistor circuits, same as found in the stand-alone
Langevin Dual Micpre. 48 volt phantom power can be applied to each input
XLR independently and the switches are a locking type to prevent accidents.
New to this unit are the front panel 1/4" Direct Instrument inputs.
A new little discrete circuit from our tech Paul Fargo gives these inputs
an appropriate input impedance (500Kohms) and provides about 40 dB of
gain.
The Equalizers
are comprised of a low frequency shelf that can be switched to either
40 Hz or 80 Hz and a high frequency shelf that can be set for 8 KHz or
12 KHz. Very tasty choices! These shelves are continuously variable from
-10 dB to +10 dB of gain. Of course, the EQ can be completely switched
out with the BYPASS switch making it easy to make a choice.
The Limiters
are the discrete transistor version of the Manley ELOP (same as the Langevin
stand-alone version). This type of limiter is superb for vocals and a
wide range of instruments from basses and guitars to synths and room mics.
When it comes to tracking and fast set-ups, the lack of a multitude of
controls is a real feature. You can simply set up the Threshold and Gain
controls and expect that the limiter will do the right thing without a
lot of tweaking. The Limiters have Threshold and (make-up) Gain controls,
a Link switch for stereo and a pair of toggles that switch the VU meters
to "Gain Reduction" or "Output Level". These are true
stereo limiters without the usual problems of left/right matching common
to other stereo opto based limiters.
The back panel has
XLR mic inputs paralleled with 1/4" TRS jacks that feed the mic pre
stage. By popular request we have added separate 1/4" TRS micpre
outputs which "normal" into the 1/4" TRS limiter inputs
so they can be permanently wired into a patchbay. Now there are "Direct
Outputs" from the Mic Pre/EQ stage so one can indeed use the micpreamps
and the Limiters as 4 separate sections. The main outputs are available
as either transformerless balanced XLR or unbalanced 1/4" Tip-Sleeve
jacks. The solid 14 lb. 2U chassis is 19" x 3 1/2" x 10"
and sports a billet 1/4" thick machined faceplate. All the specs
and numbers not mentioned specifically on this page are the same as the
two stand-alone Langevin units elsewhere on this website. And dont
forget to check out our website and see the rave reviews this Langevin
DVC has scored in al l the magazines, including Electronic Musicians
2001 Editors Choice Award !
| TECHNICAL
SPECS |
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Dual Mono
Mic Preamp With EQ Section
- Frequency
Response: ±0 dB 10 Hz to 20 KHz
- <0.05%
THD @ 1Khz
- S/N Ratio:
103dB
- Gain: 38
dB to 53 dB (adjustable)
- Input Impedance:
2400 ohm BALANCED TRANSFORMER COUPLED
- DIRECT Input
Impedance: 100K UNBALANCED 1/4"
- Output Impedance:
11 ohm XLR; 6 ohm 1/4" output
- Maximum Output:
+31dBv (75 volts peak-to-peak)
- Input Sensitivity
@ 1KHz (45 dB gain setting): 55 mV
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ELECTRO-OPTICAL
LIMITER SECTION
- ALL-DISCRETE
audio path
- Balanced
XLR inputs & outputs
- Unbalanced
1/4" inputs & outputs
- Silent conductive
plastic INPUT attenuators
- GAIN REDUCTION
controls
- BYPASS switches
- Sifam VU
METERS
- Meters switch
to read OUTPUT or REDUCTION
- STEREO LINK
and BALANCE controls
- <0.04%
THD @1Khz
- Gain: -2
dB to 12 dB (adjustable)
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BACK
TO: INTRO Pg. 1, 2,
3; "The Rack"
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