Behringer T 47 User's Manual PDF

User Manual

TUBE CONDENSER MICROPHONE T-47 Vacuum Tube Condenser Microphone

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Important Safety Instructions

Terminals marked with this symbol carry electrical current of sufficient magnitude to

constitute risk of electric shock. Use only high-quality commercially-available speaker cables with " TS plugs pre-installed. All other installation or modification should be performed only by qualified personnel.

This symbol, wherever it appears, alerts you to the presence of uninsulated

dangerous voltage inside the enclosure - voltage that may be sufficient to constitute a risk of shock.

This symbol, wherever it appears, alerts you to important operating and

maintenance instructions in the accompanying literature. Please read the manual.

Always keep in mind that the contained tube is a highly sensitive component.

Avoid impact and other mechanical interferences. BEHRINGER assumes no liability for any damage caused by the user. If possible, keep a spare tube of the same type (12AX7) at hand.

The T-47 is extremely sensitive to moisture. Both the microphone and the PSU-T power supply

should not be used near water (for example, near a bathtub, washing machine, swimming pool,etc.). When doing voice recordings, always use the enclosed windscreen to protect the capsule from moisture.

To reduce the risk of electric shock, do not remove the top cover (or the rear section).

No user serviceable parts inside.

Do not defeat the safety purpose of the polarized or grounding-type plug. You should only connect the T-47 to the provided power supply.

After each use, wipe the microphone down with a soft cloth and place it back

into its protective casing (included with the microphone).

Limited Warranty

Please register your new BEHRINGER equipment right after your purchase by visiting behringer.com and read the terms and conditions of our warranty carefully.

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1. At a Glance

(1) Mount the microphone

(2) Connect the microphoneto the PSU-T

(3) Connect the PSU-T to the mixer

(4) Connect the mains cable

(5) Switch on the PSU-T

(6) Allow the tube to warm up

And you're good to go!

(1)

(2) (3)

(4)(5)

(6)

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2. Control elements and connections

2.1 Microphone You can tell that the T-47 is switched on when the small window glows red. There is an XLR connector on the bottom end of the microphone. Connect it to the power supply (PSU-T).

2.2 Power supply The included BEHRINGER PSU-T not only provides the supply voltage for the tube preamplifier but also employs a circuit that reduces the low frequency response. This is activated on the front panel with the LOW CUT switch.

The POWER switch on the unit's rear panel turns on the power supply.

Here you also find the following:

a seven-pin XLR connector to connect to the T-47 (MIC), a three-pin XLR connector to transmit the signal (OUTPUT), a switch to suppress signal humming noise (GND LIFT), an IEC power receptacle and a fuse holder.

Use the provided cable to connect the T47 to the power supply unit!

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3. Set-up Mounting the microphone

The microphone comes with an elastic shockmount. The advantage to a conventional microphone stand mount is that mechanically induced noise is virtually absorbed.

To mount the microphone, attach the shockmount to the microphone stand and, from above, slide the T-47 into the shockmount.

! Caution

The provided shockmount is not intended to be used for suspending the T47!

Alternatively, you can also mount the T-47 on a microphone stand mount. There is a screw adapter on the bottom side of the microphone.

Warming up

The T-47 can basically be used a couple of seconds after the PSU-T has been switched on. However, the typical sound of the the T-47 only unfolds a while after activating the power supply. We recommend allowing the microphone to warm up 30 minutes before use.

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Level setting / adjusting the basic sound

Adjust the gain control in the microphone channel of your mixing console so that the peak LED lights up only occasionally or never at all. The EQ controls in the microphone channel should be set to mid-travel position to start with; low-cut filter and signal level attenuation should be switched off. To get the sound you want, try changing the mic position relative to the sound source or even move the microphone around in the recording room of your studio. Adjusting the angle at which walls face the sound source can also be helpful. Only when the desired basic sound has been achieved, you should start to use equalizers and signal processors, if any at all. Remember: less is often more!

4. Directivity Your T-47 features a capsule with a cardioid pickup pattern and is ideal for recording individual instruments, vocals and speech. Cardioid pickup pattern means that the sound produced by sources located in front of the mic is strongly picked up. It is often used in recording situations, since this directivity pattern tones down the pickup of sounds located to the back of the microphone.

To place the microphone correctly, the BEHRINGER logo needs to face the sound source being recorded.

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5. Audio connection To transmit a preamplified signal (OUTPUT connector on the PSU-T), use a balanced microphone cable with the following pin assignment: pin 1 = shielding; pin 2 = +; pin 3 = -. Since your PSU-T features gold-plated contact points, we recommend that you use only microphone cables with gold-plated connectors.

output

For unbalanced use, pin 1 and pin 3 have to be bridged

1 = ground/shield 2 = hot (+ve) 3 = cold (-ve)

input

12 3

1 2

3

Balanced use with XLR connectors

Fig. 5.1: XLR connectors

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6. Specifications

Transducer type condenser, 16 mm (0.63'')

Polar pattern cardioid

Preamplifier vacuum tube (12AX7)

Output (PSU-T) gold-plated balanced XLR connector

Open circuit sensitivity -40 dBV (0 dBV = 1 V/Pa)

Frequency response 20 Hz to 20 kHz

Level attenuation -

Low-cut filter 12 dB/oct. @ 100 Hz (switchable)

Max. SPL (3 % THD @ 1 kHz) 130 dB

Dynamic range 110 dB

Nominal impedance approx. 200 

Load impedance >1 k

Supply voltage adapter BEHRINGER PSU-T

Mains voltage / Fuse

100-120 V~, 50/60 Hz T  250 mA  H 250 V

220-230 V~, 50/60 Hz T  125 mA  H 250 V

Mains connector standard