Question about Dell Inspiron 1501 Notebook

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Fan constantly running

I've just bought a USB microphone (audio-technica) to record voice-overs on my Inspiron 1501 though everytime I attach it the fan revs up causing unwanted background noise. Is there anyway of disabling it even for a short while?

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  • Felinna
    Felinna May 11, 2010

    If you stop the fan, the computer will heat up and shut down to prevent chips from releasing toxic silicone. I don't think you can shut it down, anyway. but I don't think the fan should be rewing up cause of the mic ... you sure your sound card is working ok and not overheating because of the mic?
    also, the fan should still be quiet enough not to disturb the mic ... or does the mic record the sound via the input cable and connectors? mine did that

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Disabling fan may cause a hardware problem. So im not responsible for that.
Open the fan from hardware. It will have two wire in its back which is fans power cable. Cut anyone and attach a small off/on switch (small bed switch will be better) between two edge of the cutted wire. Done. You can control the fan by this switch.
Keep informing.

Posted on Feb 23, 2009

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Posted on Jan 02, 2017

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Unlike 'Dynamic' microphones all condenser microphones require some sort of power supply to make them work. Sometimes this can be by way of an internal battery but many of them work on an external 'phantom' power supply.
I am not familiar with the exact model number you quote but AT make 2 types of AT2020 condenser microphone.
1) If your AT microphone is fitted with a USB plug then you can connect it directly to the USB socket on your computer, which will provide it with the power that it needs to make it work. The USB bus should automatically recognise the microphone and allocate an audio channel to it but you may still have to select this device as your input source in your recording program. How you do this will differ from one program to another.

2) However if the microphone is fitted with a standard jack-plug then it will not work by you just plugging it into your computer microphone input socket as this is not powered. You will need a separate 48volt DC power supply to power the microphone.
You will almost certainly also need some sort of microphone pre-amplifier to match the output voltage and impedance (electrical resistance) of the microphone to the levels required by your audio input socket on your computer.
Probably the best way to achieve both of these requirements at lowest cost would be to purchase a small audio mixer with a phantom power option such as the Phonic AM220 http://cpc.farnell.com/phonic/am220/mixing-console-am220/dp/DP29303

WARNING - most audio mixers only have one on/off switch for phantom, power - thus the power is either on or off for ALL channels. Some other devices - like radio microphones, keyboards and electric guitars may be damaged by having 48v dc current supplied to them

Here is a link to the technical specs sheet for the AT2020 http://www.audio-technica.com/cms/resource_library/literature/49f63e6efc082082/at2020_english.pdf
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This is a common problem with recording multi-track sounds on a computer. It is caused by something that is known as 'latency' - basically it is down to the fact that the signal from your microphone takes a different route through the system to that taken by the audio playback. The AT2020 is a USB microphone and the signal therefore has to pass through the USB bus circuit of your computer. Despite claims of multi-tasking your computer cannot do everything at once so it naturally creates delays to make itself work properly. This will be more of a problem with a computer which has a 'cut-down' processor such as a Celeron (Intel) or Duron/Sempron (AMD). These processors are really only intended for basic computing (office type) use and are not really up to the high demands of video or audio recordings.
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This article may help you http://www.pcmus.com/latency.htm
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Audio Technica is generally a good brand name in microphones, but sometimes if you talk to musicians they tend to favor names they are familiar with like Sure. In the church, school, venue world, audio technica is respected. I work audio in three separate venues and we have no trouble with our audio technica microphones.

Have you adjusted the channels--and have you tried to do so manually? Have plugged the working one into the same inputs the nonworking ones were plugged into? I know it sounds like a simple thing to ask, but sometimes the connections to the sound board are the issue. If you have the more advanced receiver for the freeway 700, there are other adjustments designed to allow you to adjust between guitar and voice. If it is preset to guitar it will not sound good for voice. You may have to change that. I am assuming you put in new batteries, but ifyou have not, you may want to try that as wireless mics use up batteries quickly.

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That microphone has an impedance of 100 ohms, so if you are reading 30 ohms you clearly have a problem with the voice coil.

Good Luck
BB

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Thats exactly how you do it:) Some times it doesnt matter what you do, you will get strange resonances. Careful EQ is the best way to tone it down. Some guitars will present boominess on certain notes, thats just the way they are. Acoustics rely on this boominess to some degree. Good luck and happy recording. :) Happy to talk more to you about it.

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