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The Terminator
Interior and Exterior Body & Chassis
Mach460 Amp Bad. Anyone take one apart?
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<blockquote data-quote="Sagittaria" data-source="post: 12480859" data-attributes="member: 113330"><p>(For one amp)</p><p>2xPanasonic FM 50v 1000uf EEU-FM1H102</p><p>2xPansonic FM 16v 2200uf EEU-FM1C222</p><p>1xNichicon KA 16v 33uf UKA1C330MDD1TD</p><p>7xNichicon KA 35v 10uf ECE-A1VKA100</p><p>1xNichicon KA 50v 4.7uf EEU-FM1C222</p><p></p><p>Total of 13 electrolytic caps total on the boards. Recapping amps is a common audiophile way of improving sound... especially in older boards (caps worsen as they age... they filter signals and are the single greatest reason for bad sound). The OEM nichicon VXs are actually decent but they are more of a middle of the road general purpose sort of capacitor. The FMs are considered to be among the best (currently) but some of the smaller caps proved to be difficult to get the right specs for... which is why I chose the KAs. They are Nichicon's "premium audio caps." See following chart if you're curious: <a href="http://www.nichicon-us.com/english/products/alm_mini/daia_f.htm" target="_blank">Miniature Type Aluminum Electrolytic Capacitors</a></p><p></p><p>I bought all my stuff through digikey. Here are the replacement MOSFETs... however I wouldn't bother replacing these unless you actually have a problem. They handle a little more current yes... but your stock ones aren't necessarily going to blow. </p><p></p><p>2x 100v 33A IRF540NPbF (MOSFETs... they supply power to the amp)</p><p>2x Any .5w 56ohm 5% or 1% resistor of your choice... stockers are rated at .25w and have a tendency to blow before the MOSFETs do... they regulate how much current goes to the MOSFETs. They are labeled r807 and r808 - right in front of each MOSFET.</p><p></p><p>The Mach 460 board isn't complicated by any means especially when compared to modern compact SMD boards - but I would recommend you have some pretty good soldering experience with on PCBs.</p><p></p><p>And for others curious on the whole recapping thing - here is a decent guide</p><p><a href="http://www.condoraudio.com/wp-content/uploads/Reviews/How-to-Choose-Replacement-Capacitors-and-Resistors.pdf" target="_blank">http://www.condoraudio.com/wp-content/uploads/Reviews/How-to-Choose-Replacement-Capacitors-and-Resistors.pdf</a></p><p>I really only took the easy route and just replaced capacitors.</p></blockquote><p></p>
[QUOTE="Sagittaria, post: 12480859, member: 113330"] (For one amp) 2xPanasonic FM 50v 1000uf EEU-FM1H102 2xPansonic FM 16v 2200uf EEU-FM1C222 1xNichicon KA 16v 33uf UKA1C330MDD1TD 7xNichicon KA 35v 10uf ECE-A1VKA100 1xNichicon KA 50v 4.7uf EEU-FM1C222 Total of 13 electrolytic caps total on the boards. Recapping amps is a common audiophile way of improving sound... especially in older boards (caps worsen as they age... they filter signals and are the single greatest reason for bad sound). The OEM nichicon VXs are actually decent but they are more of a middle of the road general purpose sort of capacitor. The FMs are considered to be among the best (currently) but some of the smaller caps proved to be difficult to get the right specs for... which is why I chose the KAs. They are Nichicon's "premium audio caps." See following chart if you're curious: [url=http://www.nichicon-us.com/english/products/alm_mini/daia_f.htm]Miniature Type Aluminum Electrolytic Capacitors[/url] I bought all my stuff through digikey. Here are the replacement MOSFETs... however I wouldn't bother replacing these unless you actually have a problem. They handle a little more current yes... but your stock ones aren't necessarily going to blow. 2x 100v 33A IRF540NPbF (MOSFETs... they supply power to the amp) 2x Any .5w 56ohm 5% or 1% resistor of your choice... stockers are rated at .25w and have a tendency to blow before the MOSFETs do... they regulate how much current goes to the MOSFETs. They are labeled r807 and r808 - right in front of each MOSFET. The Mach 460 board isn't complicated by any means especially when compared to modern compact SMD boards - but I would recommend you have some pretty good soldering experience with on PCBs. And for others curious on the whole recapping thing - here is a decent guide [url]http://www.condoraudio.com/wp-content/uploads/Reviews/How-to-Choose-Replacement-Capacitors-and-Resistors.pdf[/url] I really only took the easy route and just replaced capacitors. [/QUOTE]
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Mach460 Amp Bad. Anyone take one apart?
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