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									Ross amps. - Guitar Players Discussion				            </title>
            <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/</link>
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                        <title>RE: Ross amps.</title>
                        <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184020</link>
                        <pubDate>Sun, 18 Jun 2006 12:17:20 +0000</pubDate>
                        <description><![CDATA[They&#039;re probably SMCs (Surface Mounted Components) - there is no &quot;rear&quot;, it&#039;s all on one side. I don&#039;t know the size or spacing of the MOSFET, but I&#039;d consider looking into a chip socket, fo...]]></description>
                        <content:encoded><![CDATA[They're probably SMCs (Surface Mounted Components) - there is no "rear", it's all on one side. <br>I don't know the size or spacing of the MOSFET, but I'd consider looking into a chip socket, for the MOSFET. 

Unlikely if they are modules, and are capable of producing 10 watts. Even with relatively low internal resistance, they would dissipate too much for practical SMT application. If by chance they are, then the best mod would be to build a daughter board + heat sink. It's going to be a hand-wired boutique amp before this is over  :wink:]]></content:encoded>
						                            <category domain="https://guitarnoise.forum/guitar-players-discussion/">Guitar Players Discussion</category>                        <dc:creator>gnease</dc:creator>
                        <guid isPermaLink="true">https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184020</guid>
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				                    <item>
                        <title>RE: Ross amps.</title>
                        <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184015</link>
                        <pubDate>Sun, 18 Jun 2006 11:50:46 +0000</pubDate>
                        <description><![CDATA[They&#039;re probably SMCs (Surface Mounted Components) - there is no &quot;rear&quot;, it&#039;s all on one side. I don&#039;t know the size or spacing of the MOSFET, but I&#039;d consider looking into a chip socket, fo...]]></description>
                        <content:encoded><![CDATA[They're probably SMCs (Surface Mounted Components) - there is no "rear", it's all on one side. <br>I don't know the size or spacing of the MOSFET, but I'd consider looking into a chip socket, for the MOSFET. You'd probably have to drill holes, for the connections, but you'd avoid the risk of frying the new MOSFET as you install it. You could, also, replace a fried MOSFET, without soldering.]]></content:encoded>
						                            <category domain="https://guitarnoise.forum/guitar-players-discussion/">Guitar Players Discussion</category>                        <dc:creator>greybeard</dc:creator>
                        <guid isPermaLink="true">https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184015</guid>
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				                    <item>
                        <title>RE: Ross amps.</title>
                        <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184007</link>
                        <pubDate>Sun, 18 Jun 2006 09:30:16 +0000</pubDate>
                        <description><![CDATA[Yeah. I cracked mine open when it died. The chip was fried. I wanted to replace it but it was held in place only by solder. That is there was no copper base from the circuit that I could see...]]></description>
                        <content:encoded><![CDATA[Yeah. I cracked mine open when it died. The chip was fried. I wanted to replace it but it was held in place only by solder. That is there was no copper base from the circuit that I could see. Only solder. I should clarify that, I simply could not see where the solder met copper from the other side of the board. The reason being, that the chip is mounted on the solder side of the board. For space conservation reasons I assume. The heatsink is puny. Not larger than a Canadian Tooney. (a 2 dollar coin for those who don't know.) What I do know for sure is that there aren't many left out there.]]></content:encoded>
						                            <category domain="https://guitarnoise.forum/guitar-players-discussion/">Guitar Players Discussion</category>                        <dc:creator>hueseph</dc:creator>
                        <guid isPermaLink="true">https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184007</guid>
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				                    <item>
                        <title>RE: Ross amps.</title>
                        <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184005</link>
                        <pubDate>Sun, 18 Jun 2006 09:23:03 +0000</pubDate>
                        <description><![CDATA[Sounds as if they used inadequate heat sinking on newly popular MOSFETaudio power amp module starting to be used in mid-late 80&#039;s stereo receivers. If Ross ran these into saturation, I&#039;m nie...]]></description>
                        <content:encoded><![CDATA[Sounds as if they used inadequate heat sinking on newly popular MOSFETaudio power amp module starting to be used in mid-late 80's stereo receivers. If Ross ran these into saturation, I'm niether too surprised they sounded nice and tube-like nor that they fried. You should consider remounting the module on some aluminum, using thermal compound and -- as you suggest -- add the fan. Even a quiet, low CIPS capacity fan blowing across the aluminum should keep it happy. Running it into a 16 ohm load also might help prolong it's life, as that will lower peak currents in the MOSFETs. Good luck finding one.]]></content:encoded>
						                            <category domain="https://guitarnoise.forum/guitar-players-discussion/">Guitar Players Discussion</category>                        <dc:creator>gnease</dc:creator>
                        <guid isPermaLink="true">https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-184005</guid>
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				                    <item>
                        <title>Ross amps.</title>
                        <link>https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-18513</link>
                        <pubDate>Sun, 18 Jun 2006 09:04:04 +0000</pubDate>
                        <description><![CDATA[Does anyone remember these? Ross used to make these little solid state 10 watt amps that just ripped. I mean they sounded really heavy and warm. Just wicked! The only thing was that they use...]]></description>
                        <content:encoded><![CDATA[Does anyone remember these? Ross used to make these little solid state 10 watt amps that just ripped. I mean they sounded really heavy and warm. Just wicked! The only thing was that they used a MOSFET chip that got really hot. Inevitably they would fry themselves because of the poor ventilation in those little plate steel housings. Unless of course you took the time to cut a nice hole into the casing and drop a fan in. I've been seriously thinking about doing some mods to one of those little buggers. Anyone seen one?]]></content:encoded>
						                            <category domain="https://guitarnoise.forum/guitar-players-discussion/">Guitar Players Discussion</category>                        <dc:creator>hueseph</dc:creator>
                        <guid isPermaLink="true">https://guitarnoise.forum/guitar-players-discussion/ross-amps/#post-18513</guid>
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