{"id":1748,"date":"2010-10-03T14:20:41","date_gmt":"2010-10-03T11:20:41","guid":{"rendered":"https:\/\/yehar.com\/blog\/?p=1748"},"modified":"2017-09-17T10:52:04","modified_gmt":"2017-09-17T07:52:04","slug":"amplifiers-in-old-sound-blasters","status":"publish","type":"post","link":"https:\/\/yehar.com\/blog\/?p=1748","title":{"rendered":"Sound Blaster amplifiers"},"content":{"rendered":"

EDIT: These days, please harvest amplifier chips from active computer speakers instead. They are plentiful and contain only what you need in a nice package.<\/p>\n

For a project of mine, I needed a stereo amplifier. I had some old Sound Blaster ISA cards (and later got more, which are also now listed here), with different amplifiers:<\/p>\n\n\n\n\n\n\n\n\n
card name<\/strong><\/td>\nmodel number<\/strong><\/td>\nyear<\/strong><\/td>\namplifier IC<\/strong><\/td>\nPower output<\/strong><\/td>\n<\/tr>\n
Sound Blaster 16<\/td>\nCT2290<\/td>\n1994<\/td>\nTEA2025B<\/a><\/td>\n2 x 2.4 W<\/td>\n<\/tr>\n
Sound Blaster 16 Value<\/td>\nCT2779<\/td>\n1994<\/td>\nTEA2025B<\/td>\n2 x 2.4 W<\/td>\n<\/tr>\n
Sound Blaster 16<\/td>\nCT2940<\/td>\n1995<\/td>\nTDA1517P<\/a><\/td>\n2 x 6 W<\/td>\n<\/tr>\n
Sound Blaster<\/td>\nCT4170<\/td>\n1997<\/td>\nTDA1517P<\/td>\n2 x 6 W<\/td>\n<\/tr>\n
Sound Blaster Vibra 16<\/td>\nCT4180<\/td>\n1997<\/td>\nTDA1517P<\/td>\n2 x 6 W<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

I liked TDA1517P, because it had so few additional components.<\/p>\n

\"\"<\/a>
The amplifier part (left) of Sound Blaster 16 CT2940, cut off with a diamond cutting wheel. Jump wires were soldered to route input from Line In, and wires were added for 12 V power input (shared ground with signal). Two pins of the TDA1517P amplifier were shorted to enable the chip. A voltage regulator was also removed, as it was not used by the amplifier.<\/figcaption><\/figure><\/p>\n

Seems to work fine!<\/p>\n","protected":false},"excerpt":{"rendered":"

EDIT: These days, please harvest amplifier chips from active computer speakers instead. They are plentiful and contain only what you need in a nice package. For a project of mine, I needed a stereo amplifier. I had some old Sound Blaster ISA cards (and later got more, which are also now listed here), with different … Continue reading “Sound Blaster amplifiers”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":1758,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,1],"tags":[],"_links":{"self":[{"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1748"}],"collection":[{"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1748"}],"version-history":[{"count":2,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1748\/revisions"}],"predecessor-version":[{"id":4204,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1748\/revisions\/4204"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/1758"}],"wp:attachment":[{"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yehar.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}