Studio Projects LSD 2 - Manual (Page 6)

C4
The C4 is a 20mm diameter condenser microphone featuring inter-
changeable capsules, linear, low-noise, solid-state electronics, select-
able -10dB/20dB pads and selectable 150Hz/75Hz high pass filters. It is
intended for all-around use on stage, on location and in studios of all calibers.
Used as an omnidirectional (pressure) microphone, the C4 offers a
warm tonal response and is recommended for close miking in favor-
able acoustical environments. There is very little off axis coloration
owing to the inherent nature of pressure capsules, and it is this
- combined with the low self-noise of the mic circuitry that makes the
C4 omni an excellent ambience mic –especially in pairs. In a good
room, a pair of omnis can provide a vibrant and live feel to recordings,
which is not achievable through the use of directional microphones.
The C4 omni is intended for all manner of recording tasks, including vocal,
piano and orchestral use.
As a cardioid (pressure gradient) microphone, the C4 provides excel-
lent pickup of on-axis sources while attenuating extraneous sound
occurring from the side and rear of the mic. This makes it ideal for
close miking of individual instruments where bleed from other nearby
instruments or sound is undesirable. The C4 cardioids also make excellent stereo pairs for
coincident and near-coincident miking techniques such as X-Y and ORTF. Additionally the
C4’s are quite useful on a drum kit as overheads and on toms, not to mention snare drum.
For increased side and some rear attenuation, the hypercardioid head (HC1) is available for
the C4 microphone. This pressure gradient capsule is particularly useful for X-Y, ORTF, speech
and dialog pickup, drum overheads and spot miking.
The C4 microphone set is offered in pairs with mic stand clips (C4SC), foam windscreens (C4WS),
stereo bar (SPSB) and hard shell carrying case.
C4 SPECIFICATIONS
Type: 20mm diameter condenser microphone with FET impedance converter.
Polar pattern: Omni-directional pressure (OC1 head), pressure gradient cardioid
(CC1 head), pressure gradient hypercardioid (optional HC1 head)
Frequency response: 20Hz – 20kHz
Sensitivity: -39dB/-39dB/-38dB
Output impedance: <200 Ohm.
Load impedance: >1200 Ohm.
Max SPL: 158 dB SPL with -20dB pad
Equivalent Noise: 18 dB SPL, (A-weighted per IEC268-15).
S/N ratio: 76/76/77dB
Power requirement: P48 +/- 4V
Current consumption: 3.1ma
Circuit: JFET follower, low distortion output buffer
Connector: Gold-plated 3-pin XLR.
Pad: -10dB/-20dB
Low cut: 6 dB/Octave at 75Hz/150Hz
Length: 4.90”(124.5mm)
Diameter: .787” (20mm)
Weight: 3.3oz. (92g)s
LSD2
The LSD-2 is a stereo microphone comprised of two separate dual-membrane solid
state microphones contained within a single housing. Its capsules are mounted in
close proximity on a vertical axis - the upper capsule assembly having the ability to
rotate 270 degrees horizontally, relative to the lower capsule. Two C&K three-way
switches control the polar response, high pass filtering and -10dB pad for each cap-
sule (The switches on the front of the body correspond to the lower fixed capsule,
while the switches 180° opposite on the back of the mic control the rotating upper
capsule). It is the combination of capsule articulation and independent pattern
switching which allows a user of the LSD2 to achieve all manner of coincident pair
stereophonic recording techniques. Due to the close proximity of the capsules, there
is no phase cancellation resulting from time delay between the two signals. This
translates into excellent mono compatibility.
The inner workings of the LSD-2 are essentially that of two Studio Projects Model
C3 microphones. The capsules are 1.06” (27mm) diameter, dual membrane,
Braunmuhl-Weber design. These are independently coupled through low-noise
amplifiers based on FET driven discrete balanced output stages. The outer housing
is plated brass with a single layer brass wire mesh grill surrounding the capsules.
Included with the LSD-2 microphone is a dedicated 7-pin XLR to dual 3-pin XLR “Y”
cable, magnum-sized foam windscreen, standard shockmount and carrying case.
LSD2 SPECIFICATIONS
Type: Stereo condenser microphone with vertically
coincident 1.06” (27mm.) dual diaphragms.
Polar pattern: Cardioid, Omni directional Figure of 8
Frequency response: 30~20000Hz.
Sensitivity: 12mV/Pa=-38dB(0dB=1V/Pa).
Output impedance: <200 Ohm.
Load impedance: >1200 Ohm.
Max. SPL: 132/142dB SPL for 1% THD @1000Hz(0dB/-10dB pad,
0dB SPL=0.00002Pa).
Noise: (Line)---28 dB (A weighted)---18 dB-A.
S/N ratio: 76 dB.
Circuit: JFET impedance converter, discrete balanced output
Power requirement: 24v.-52.5v. phantom power x 2
Current Consumption: 2.5mA
Connector: Gold-plated 7-pin XLR breakout cable
Size: 2.1” (53.34mm.) dia.
Weight: 1.8 lbs.
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