How to increase the microphone volume
If you connect a dynamic microphone designed to karaoke, to the mic input sound card, the signal will be very small. Simple modifications enable Microphone, preserving the appearance of the device intact, making it compatible with a sound card.
You will need:
- electret microphone capsule at the voltage of 1.5 V; - Multimeter; - A metal ring; - Electrical tape; - Glue; - Phono connector 3.5 mm; - Soldering, solder flux and neutral.
Instruction how to increase the microphone volume
Electret microphone capsule remove the defective headset "hands-free" - This is where they are most likely to be rated at 1.5 rather than 3 V. Trehvoltovye primers when working with a sound card provide nearly as quiet sound as dynamic microphones, so their use should be avoided.
Determine the polarity of the microphone capsule. If it is not available directly at it, get a thin metal strip that connects one of the conclusions from the body - it is negative. In the absence of such a strip to determine which of the terminals connected to the housing, can multimeter operating in the mode ohmmeter.
Twist with dynamic microphone casing. Carefully detach the dynamic microphone capsule and Unsolder it. Keep the cap in case you need the microphone back to rework designed for karaoke.
Using a multimeter, working in an ohmmeter mode, determine which of the two wires on their way to a dynamic capsule, connected to the terminal connector located closest to the cable. It connect with the minus contact electret capsule. The remaining wire to the positive terminal.
Turn the switch on the microphone body to the on position. Shook his tape to transfer to the off position it was impossible. The fact that in the OFF position the switch closes the output circuit, which may lead to failure of some sound cards fail.
Connect a microphone to your computer, make sure that the microphone input is included in the software mixer and gain control is not at zero. Say something in the electret capsule. If there is no sound, it means that there is no contact or cap plugged in the wrong direction. If the sound is quiet, used trehvoltovy cap, and it will have to be replaced by another (before any soldering microphone must be disconnected from the computer). If the sound is loud, and at presentation to the microphone to the speakers there is self-excitation - everything is done correctly.
If now and again to screw on the microphone casing, it can win over the wire, and twist them to break. To avoid this, electret capsule paste the same manner as has been previously glued dynamic. All wires that can come into contact with the thread and wrap it, protect the tape. Only then install the cover at mesto.V if electret microphone height exceeds the height of the dynamic, to fit in the housing, before the HERZ-TS put on a carving of the microphone housing metal ring diameter and thickness required.
Connect a microphone, equipped with a 6.3-mm plug to your sound card via an adapter uncomfortable. It is better to replace it with a 3.5 mm. He has contacts that are closest to the cable, connect with a mean terminal and negative terminal of the electret capsule and pin farthest from the cable - to the positive.
Karaoke player converted the microphone will not work. That it can be used again in conjunction with the player, replace the cap back on a dynamic no polarity, plug - 6.3 mm, and duct tape covering the circuit breaker, remove.