Alctron TH600 Condenser Recording Microphone

Owner's Manual

General Description

The TH600 is an Alctron D & R condenser recording microphone. Its 34mm large diaphragm capsule with a cardioid polar pattern delivers an eloquent and outstanding low-frequency sound quality. The microphone features a fashionable and concise fluting design that enhances its visual appeal. Additionally, the included metal shock mount contributes to the microphone's metallic aesthetic and helps reduce vibrations during recording.

Features

Cardioid condenser recording microphone.
34mm large diaphragm capsule.
Records sound with more warmth and natural character.

How to Use Microphone

Follow these steps to set up and use your Alctron TH600 microphone:

Step 1: Preparation
Illustration of the Alctron TH600 condenser microphone and its shock mount.
Step 2: Mount the Shock Mount
Illustration showing the shock mount being screwed into a microphone stand.
Step 3: Attach the Microphone
To attach the microphone: First, turn the bottom thumbscrew counter-clockwise to loosen it. Insert the microphone into the shock mount. Then, tighten the thumbscrew to secure the microphone.
Step 4: Connect to Power
Use a 3-pin XLR cable to connect the microphone to a device that provides 48V phantom power (e.g., a mixing console or audio interface).

XLR Connection

NOTE: Ensure the 48V phantom power is turned ON on your connected devices.

Diagram illustrating the Alctron TH600 microphone connected via an XLR cable to a mixing console or audio interface, with a note to ensure 48V phantom power is enabled.

Proximity Effect

Unidirectional microphones, such as the TH600, progressively boost bass frequencies by 6 to 10 dB below 100 Hz when the microphone is placed at a distance of approximately 6 mm (1/4 inch) from the sound source. This phenomenon, known as the proximity effect, can be utilized to achieve a warmer, more powerful sound.

Suggested Microphone Placement and Tone Quality

Application	Suggested Microphone Placement	Tone Quality
Vocals	Lips less than 15 cm (6 in.) away or touching the windscreen, on axis to microphone.	Robust sound, emphasized bass, maximum isolation from other sources.
	15 to 60 cm (6 in. to 2 ft.) away from mouth, just above nose height.	Natural sound, reduced bass.
	20 to 60 cm (8 in. to 2 ft.) away from mouth, slightly off to one side.	Natural sound, reduced bass and minimal "s" sounds.
	90 cm to 1.8 m (3 to 6 ft.) Away.	Thinner, distant sound; noticeable levels of ambient noise.
Guitar & Bass Amplifiers	2.5 cm (1 in.) from speaker, on-axis with center of speaker cone.	Sharp attack; emphasized bass.
	2.5 cm (1 in.) from speaker, at edge of speaker cone.	Sharp attack; higher frequency sound.
	15 to 30 cm (6 to 12 in.) away from speaker and on-axis with speaker cone.	Medium attack; full, balanced sound.
	60 to 90 cm (2 to 3 ft.) back from speaker, on-axis with speaker cone.	Softer attack; reduced bass.

General Rules for Use

Aim the microphone toward the desired sound source (e.g., talker, singer, or instrument) and away from unwanted sources.
Place the microphone as close as practical to the desired sound source.
Work close to the microphone for extra bass response.
Use only one microphone to pick up a single sound source.
Use the fewest number of microphones as practical.
Keep the distance between microphones at least three times the distance from each microphone to its source.
Place microphones as far as possible from reflective surfaces.
Add a windscreen when using the microphone outdoors.
Avoid excessive handling to minimize pickup of mechanical noise and vibration.
Do not cover any part of the microphone grille with your hand, as this will adversely affect microphone performance.

Technical Specifications

Capsule: 34mm
Polar pattern: cardioids
Frequency response: 20Hz-20kHz
Sensitivity: -37dB±2dB (0dB=1V/Pa at 1kHz)
Output impedance: 150Ω±30% (at 1kHz)
Load impedance: ≥1000Ω
Self-noise: 16dB A
Max input SPL: 132dB (at 1kHz ≤1% T.H.D)
S/N Ratio: 78dB
Phantom power requirement: 48V phantom power

Frequency Response Curves and Polar Diagram

The document includes a frequency response curve showing output in dB across frequencies from 20Hz to 20kHz. It also features a polar diagram illustrating the cardioid pickup pattern of the microphone at 1kHz.

Caution

CAUTION:

Do not store the microphone under direct sunlight, near heating devices or in a hot, humid or dusty place. Do not allow the microphone to get wet.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Do not subject the microphone to strong impact.
Do not disassemble, modify or attempt to repair the microphone.
Clean only with a dry cloth.
When this product is used for a long time, the microphone may become discolored due to ultraviolet light (especially direct sunlight) or wear.

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