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	<title>Audio Amplifier Projects</title>
	<link>http://www.amplifierprojects.com</link>
	<description>Audio power, headphone and pre Amplifier, Car amplifier, Digital audio circuits, Loudspeakers projects</description>
	<pubDate>Sun, 01 Apr 2007 12:39:40 +0000</pubDate>
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		<title>the wall box</title>
		<link>http://www.amplifierprojects.com/loudspeakers/the-wall-box-122/</link>
		<comments>http://www.amplifierprojects.com/loudspeakers/the-wall-box-122/#comments</comments>
		<pubDate>Sun, 01 Apr 2007 11:56:02 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Loudspeakers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/loudspeakers/the-wall-box-122/</guid>
		<description><![CDATA[In these days ofminiaturization, fewpeople seem to feela need for largeloudspeakers in theirliving room. But,although they wantsmall boxes, they stillwant good quality. Thewall box presented inthis article meets thoserequirements. It is atwo-way system housedin a small, shallowenclosure that isinconspicuous in theliving room.

Brief parameters
Design Two-way or three-way, vented
Woofer WS13BF (Visaton)
Tweeter DTW95NG (Visaton)
Wideband driver FRWS5 (Visaton)
Frequency range [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/loudspeakers/the-wall-box-122/feed/</wfw:commentRss>
		</item>
		<item>
		<title>S/PDIF test generator</title>
		<link>http://www.amplifierprojects.com/digital-audio/spdif-test-generator-118/</link>
		<comments>http://www.amplifierprojects.com/digital-audio/spdif-test-generator-118/#comments</comments>
		<pubDate>Sun, 01 Apr 2007 11:30:15 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Digital audio]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/digital-audio/spdif-test-generator-118/</guid>
		<description><![CDATA[S/PDIF test generator
The generator is intended primarily for checking S/PDIF (Sony/Philips Digital Interface Format) receivers and any associated digital-to-analogue converters (DAC) and/or output filters. The externalclock – standard TTL level – enables 128 sample frequenciesto be generated. The clock may also be used for generating standardfrequencies with the remaining inverters serving as crystal oscillators(provided a [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/digital-audio/spdif-test-generator-118/feed/</wfw:commentRss>
		</item>
		<item>
		<title>Links</title>
		<link>http://www.amplifierprojects.com/amplifiers/links-126/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/links-126/#comments</comments>
		<pubDate>Sat, 31 Mar 2007 12:42:39 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/links/</guid>
		<description><![CDATA[Alldatasheet - Free Datasheet, Free Datasheets, Datasheet search site,Datasheet search site for Electronic Components and Semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
Russian electronics circuits, article, projects and forum - Russian site for repair electronics
sharefx.com - Service Manual ,Schematic, circuit diagram, shema, schema, sema, repair forum, datasheets,eeprom , bin, pcb.
]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/links-126/feed/</wfw:commentRss>
		</item>
		<item>
		<title>simple copybit killer</title>
		<link>http://www.amplifierprojects.com/digital-audio/simple-copybit-killer-114/</link>
		<comments>http://www.amplifierprojects.com/digital-audio/simple-copybit-killer-114/#comments</comments>
		<pubDate>Fri, 30 Mar 2007 23:47:14 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Digital audio]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/digital-audio/simple-copybit-killer-114/</guid>
		<description><![CDATA[simple copybit killer
The Serial CopyManagementSystem (SCMS)prevents digitalcopying of audiomaterial from thesecond generationonwards.Unfortunately, thisprotection alsoworks on homerecordings and soprevents homerecordists fromdigitally copyingtheir ownmusical work more thanonce without degradationby the SCMS. This problemhas been highlightedbefore in this magazine,but it has not gone away– reason enough todescribe a simple andinexpensive circuit forpermanently removing thecopy-prohibit-bit from theS/PDIF* audio signal.

]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/digital-audio/simple-copybit-killer-114/feed/</wfw:commentRss>
		</item>
		<item>
		<title>sampling rate converter</title>
		<link>http://www.amplifierprojects.com/digital-audio/sampling-rate-converter-112/</link>
		<comments>http://www.amplifierprojects.com/digital-audio/sampling-rate-converter-112/#comments</comments>
		<pubDate>Fri, 30 Mar 2007 23:42:16 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Digital audio]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/digital-audio/sampling-rate-converter-112/</guid>
		<description><![CDATA[sampling rate converter
Although there arestill dyed-in-the-woolsound technicianswho swear by thegood old analoguerecording technology,most others, bitten bythe digital audiorecording bug, do notwant to revert to analoguerecording. Theyhave experienced thepleasures of loss-freeprocessing and copyingof recordings atdigital level. Thesepleasures turn to frustration,however,when they want toconvert a DAT recordingon to a CD. Thiscannot be done justlike that because thetwo [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/digital-audio/sampling-rate-converter-112/feed/</wfw:commentRss>
		</item>
		<item>
		<title>50 W a.f. amplifier</title>
		<link>http://www.amplifierprojects.com/amplifiers/50-w-af-amplifier-108/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/50-w-af-amplifier-108/#comments</comments>
		<pubDate>Fri, 30 Mar 2007 23:33:46 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/amplifiers/50-w-af-amplifier-108/</guid>
		<description><![CDATA[50 W a.f. amplifier
Although audio enthusiastscome inmany sizes andcolours, not many ofthem are prepared tospend a lot of money,time and effort tobuild an a.f. amplifierusing up to 40 transistorsto improve thedistortion by a fractionof a per cent.Therefore, the amplifierdescribed hereshould appeal tothose enthusiasts. Itis compact, presentsno problems and yethas properties thatmake it fully suitablefor all [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/50-w-af-amplifier-108/feed/</wfw:commentRss>
		</item>
		<item>
		<title>30 W AF amplifier for cars</title>
		<link>http://www.amplifierprojects.com/amplifiers/30-w-af-amplifier-for-cars-106/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/30-w-af-amplifier-for-cars-106/#comments</comments>
		<pubDate>Fri, 30 Mar 2007 23:26:52 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/amplifiers/30-w-af-amplifier-for-cars-106/</guid>
		<description><![CDATA[30 W AF amplifier for cars
The power that can be obtained from a standard car radio amplifieroperating from a 12 V car battery is 5–6W, which (formany listeners) is not really enough for satisfactoryhi-fi reproduction. It is, of course, possible to boost the 12 Vsupply with a power inverter, but that is fairly expensive andnot [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/30-w-af-amplifier-for-cars-106/feed/</wfw:commentRss>
		</item>
		<item>
		<title>1-watt BTL audio amplifier</title>
		<link>http://www.amplifierprojects.com/amplifiers/1-watt-btl-audio-amplifier-103/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/1-watt-btl-audio-amplifier-103/#comments</comments>
		<pubDate>Fri, 30 Mar 2007 23:24:11 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/amplifiers/1-watt-btl-audio-amplifier-103/</guid>
		<description><![CDATA[1-watt BTL audio amplifier
The TDA8581(T) from PhilipsSemiconductors is a 1-wattBridge Tied Load (BTL) audiopower amplifier capable of delivering1 watt output power into an8-Ωload at THD (total harmonicdistortion) of 10% and using a 5-V power supply. The schematicshown here combines the functionaldiagram of the TDA8551with its typical application circuit.The gain of the amplifiercan be set by [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/1-watt-btl-audio-amplifier-103/feed/</wfw:commentRss>
		</item>
		<item>
		<title>supply board for output amplifiers</title>
		<link>http://www.amplifierprojects.com/amplifiers/supply-board-for-output-amplifiers-100/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/supply-board-for-output-amplifiers-100/#comments</comments>
		<pubDate>Thu, 29 Mar 2007 13:50:31 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/amplifiers/supply-board-for-output-amplifiers-100/</guid>
		<description><![CDATA[supply board for output amplifiers
Apart from their electronic configuration,all output amplifiers comprisethe same elements: an amplifierboard, a mains transformer, a bridgerectifier, and electrolytic smoothingcapacitors. The board is normallyscrewed to the heat sink, while thetransformer and bridge rectifier arefixed to the bottom of the enclosure.Often, there is no such defined locationfor the electrolytic capacitors.These are mounted [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/supply-board-for-output-amplifiers-100/feed/</wfw:commentRss>
		</item>
		<item>
		<title>single-chip 50 W AF amplifier</title>
		<link>http://www.amplifierprojects.com/amplifiers/single-chip-50-w-af-amplifier-97/</link>
		<comments>http://www.amplifierprojects.com/amplifiers/single-chip-50-w-af-amplifier-97/#comments</comments>
		<pubDate>Thu, 29 Mar 2007 13:46:07 +0000</pubDate>
		<dc:creator><ADMINNICENAME></dc:creator>
		
		<category><![CDATA[Amplifiers]]></category>

		<guid isPermaLink="false">http://www.amplifierprojects.com/amplifiers/single-chip-50-w-af-amplifier-97/</guid>
		<description><![CDATA[SINGLE-CHIP 50 W AF AMPLIFIER
The chip on which the amplifier isbased, a Type LM3876, is a memberof the Overture family from National Semiconductor,All members of this family arepin-compatible and mutually interchangeable.They are typified by an internal protection(called SPIKE). In practice, the differencebetween them is the power output.The series was described on the basis of theLM3886 [...]]]></description>
		<wfw:commentRss>http://www.amplifierprojects.com/amplifiers/single-chip-50-w-af-amplifier-97/feed/</wfw:commentRss>
		</item>
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