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Old 8th September 2002, 06:49 PM   #1
palesha is offline palesha  India
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Default STK for subwoofer

I wish to make 50W~100W subwoofer & to use STK IC for the amp. Kindly suggest whether it will be good or not? If good then which number STK to be used? Or is it better to use LM 3886.
MP
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Old 8th September 2002, 06:57 PM   #2
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Default Sub amp

How about the P3A.

It's simpel, and IMHO better than any STK amp.

\Jens
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Old 8th September 2002, 07:02 PM   #3
skaara is offline skaara  Slovenia
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If you want to made ic amp than this stk should be ok.. Othervise I suggest you p3a too
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Old 9th September 2002, 06:19 AM   #4
mcp is offline mcp  United States
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Sub Woofer Amp

If you are not very experienced in discrete designs, or may not have the time or equipment, I would suggest using Hybrid Amps like STK or LM.

There is nothing wrong with them. Think of them like instant noodles. Its edible, fast to cook and gets the job done with the minimum fuss.

As for a sub woofer amp, you are not very concern about the high frequency performance. What you would want is an amp that can produce good bass, loud enough without distorting. In other words, a properly rated transformer and enough capacitors and depending on how loud and how long you play, how big is your heat sink.

An elderly STK084G can deliver 65W(RMS) into 8 ohms and 110W(RMS) into 4 ohms. According to the specs, the newer STK's like the 4048XI can deliver 150W(RMS) into 8 ohms. These hybrids have come a long way. If you need more power, bridge them.

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Mike
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