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Brand Name Мастер КИТ
Model Number 3
Origin RU(Origin)
Supply voltage range (b) 6... 20
Current consumption, no more than (MA) 1
Frequency band (Hz) 20... 20000
Microphone resistance (COM) 4... 100
Length (mm) 30
Width (mm) 33
InP level. Signal (MV) 40
Uneven frequency response,-(DB) 3
The high-quality amplifier is designed to work with any dynamic microphone with a resistance of 4... 100 Kohm. The presence of an independent adjustment of the output signal level allows you to use a pre-microphone amplifier with almost any audio frequency power amplifier.
Circuit Schematic
Questions and AnswersHi. Tell me, BM 137 is suitable for an electret microphone with an active amplifier mku-2p? Thank youWill fit. Only it will be necessary to supply power to the microphone, through the resistor with a rating of 4-7 Kohm.
Hi. And how many pieces do you have in stock and do you have a branch office in Novosibirsk? And how long does delivery take?Hi. Have in stock, how many do you require? If a large number, it is better to write to us mail. In the section where to buy, on the site, there are 5 partner stores in Novosibirsk. Delivery is carried out after placing an order on our site, the timing: from 3 days by the transport company and from 7 days by mail.
Hi. There is a dynamic microphone LG jhc-1 impedance 600 ohms... Will it fit the face of this amplifier to strengthen and transmit the signal to the laptop? (in MICR. Or Ling. inp. Sound card).Will fit
Hi! Is this amplifier suitable for connecting a dynamic microphone Shure sm63 with an output resistance of 150 ohms (real 298 ohms) to an ordinary computer audio card for digitizing sound? Will there be a normal sound level? If I connect this microphone directly to the computer, the level is very low.Recommend use bm2051 https://masterkit.ru/?1317551
Hi. When connecting this amplifier to the power supply 12v 1.5a drip capacitor C5, the one at 22 µF 63v. Подключал correctly. What's the problem? Thank you.If it's all right, it's component marriage. Replace the capacitor with a new one. If you are sure that this is a marriage, give for examination at the place of purchase.
Hello, on your forum, in the topic about this amplifier found information that some of the presented schemes are not correct, I did not understand the scheme. Could you please drop the right one. When connecting a microphone does not work at all. When I connect headphones instead of a microphone, and turn on the sound, in the headphones it is heard, but quieter than without a circuit. Volume control works. But the sound is the same that when the power is connected, that without it.Install the jumper in the place of the constant resistor R1.
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