my time is limited and I'll have to do some metal working (something I'm ill-equipped to do--wood, yes--plastic, yes--metal, only with difficulty)
winslow said:Reason I ask this is b/c I have a couple tube amps that I use on my horns that are zero negative feedback designs and they sound awesome and I wanted to make my new Mini-As even more cool.
And when searching for Aleph negative feedback, it seems like the Aleph J (I think it was) had 15 dB less NFB than the prior Alephs.
Some say the J is the best Aleph (for now), and that could be one of the reasons why.
well, I did that. On everyone elses posts I see a button at the bottom that says 'email'. I don't see that button at the bottom of my posts.middle of page - find "Enable Private Messaging?"
Those must be truly massive heatsinks! The biggest I have done are about 2.5 inches tall. A 10" tablesaw can make a cut that deep. I cut the fins in one pass, then flip and cut the thick back in 2 or three passes. Even so, this tends to gouge, so I take a real thin cut the entire height of the heatsink. With lots of lube (I like wd 40) and WD40, it won't gouge.I don't know if you've ever tried to saw something the size of a decent-sized heatsink
Big flat plates sand just fine, but end cuts don't. Use a medium tooth bastard file. You will be amazed at how smooth the end cuts come out. It will take a lot of passes to get all the cut marks out, though.Aluminum doesn't sand well
And it's dangerous as hell because irregular surfaces like the cross section of a heatsink don't always want to slide across a fence gracefully, which means they bind, which means you're at risk of a serious kickback. The idea of catching twenty pounds of heatsink with my teeth doesn't excite me.
jupiterjune said:well, I did that. On everyone elses posts I see a button at the bottom that says 'email'. I don't see that button at the bottom of my posts.
winslow said:Choky/Zen Mod, mind if I PM you a few questions?
Also, if you can't do completely away with the GNFB, is there a way to lower it considerably?
Zen Mod said:you can decrease amount of overall NFB with decreasing OLG, but that must be compromise between -what your ears hear and what your CRO tells you ........ easy - with source degeneration in input LTP
Those must be truly massive heatsinks!