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Seeking schematic for Rotel RB-890 power amplifier
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<blockquote data-quote="Shonver" data-source="post: 94277" data-attributes="member: 34"><p>Uuughh!!! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad :mad:" loading="lazy" data-shortname=":mad:" /></p><p></p><p>Would you believe it??!! Last night I played a swept sine wave tone to measure the FR of the speakers using HOLMimpulse, and the channel I just repaired blew. I guess that odd ouput transistor was an omen I should have heeded.</p><p></p><p>The amp uses 4x (2S)B817 and 4x (2S)D1047. Are these special? (Voltage rails are +/-70V). I have other Motorola transistor I can replace them with. MJL4302A/4281A and MJL1302/3281. Ludo, off the cuff (I'll look them up later)?</p></blockquote><p></p>
[QUOTE="Shonver, post: 94277, member: 34"] Uuughh!!! >:( Would you believe it??!! Last night I played a swept sine wave tone to measure the FR of the speakers using HOLMimpulse, and the channel I just repaired blew. I guess that odd ouput transistor was an omen I should have heeded. The amp uses 4x (2S)B817 and 4x (2S)D1047. Are these special? (Voltage rails are +/-70V). I have other Motorola transistor I can replace them with. MJL4302A/4281A and MJL1302/3281. Ludo, off the cuff (I'll look them up later)? [/QUOTE]
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Seeking schematic for Rotel RB-890 power amplifier
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