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Old 17th January 2013, 04:14 AM   #141
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Replaced and able to zero out offset to ground! Still waiting for things to stabilize after warming up but should not be an issue to fine tune shortly.

Thanks to ZM for the support!

Function generator should be here next week so I'll try my hand at some scope testing then.
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Old 17th January 2013, 04:52 AM   #142
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Also, just to report back on the heat distribution... All sinks are now heating up the same and not as hot as the two hotter ones used to. I can keep my hands on the sinks indefinitely very comfortably. Previously, I could do it for 5 seconds, maybe more, but it was not easy!
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Old 17th January 2013, 09:48 AM   #143
Zen Mod is offline Zen Mod  Serbia
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glad you solved that

btw - oneplustwo based on your kids ?

just saw their pictures in your blog , they're simply gorgeous

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Old 17th January 2013, 11:16 AM   #144
doolav is offline doolav  United Kingdom
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Quote:
Originally Posted by oneplustwo View Post
can I also confirm that it's important to turn on your source BEFORE turning on the amps?
- exactly what NP says in F5 article:

Quote:
"With everything connected up and the source equipment powered up first, you
can proceed to turn on the power switch to the amplifier."
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Old 17th January 2013, 03:50 PM   #145
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Quote:
Originally Posted by Zen Mod View Post
glad you solved that

btw - oneplustwo based on your kids ?

just saw their pictures in your blog , they're simply gorgeous

@ZM: You got it! Good guess. Thanks again for all your help. I learn a little more every time I do one of these projects thanks to you and others who offer their expertise.

@doolav: I knew I read that somewhere. Thanks for the reference.
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Old 17th January 2013, 05:39 PM   #146
Zen Mod is offline Zen Mod  Serbia
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Old 23rd February 2013, 05:22 AM   #147
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Well, it finally happened. The channel that I did NOT upgrade to 35A rectifiers got so hot that one of the rectifiers and the little heat sink it was attached to literally melted the solder and it fell out of the PCB. I was thinking it needed to be upgraded anyway as the transformer on that channel had a little more hum than the other one. Anyway, no harm done. I upgraded and all is good again. The only difference is that I used 35A 1000V rectifiers this time and 0.1uF caps across the AC tabs. Still have yet to measure ripple but I imagine it's the same as the other channel. I'll confirm later tonight.
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Old 23rd February 2013, 03:15 PM   #148
Eric is offline Eric  United States
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Hi Jason,

Glad to see that your amp build has been coming along so nicely. Somehow, I missed your thread over the past little while or I would have offered some help (I'm glad that you found my website to be of some use) - looks like you've been in good hands with Choky!

I like your speaker projects - they have turned out great! Together with that nice sub you built a while ago I suspect you have a great sounding system!

Enjoy!
Eric
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Old 23rd February 2013, 03:26 PM   #149
Eric is offline Eric  United States
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When you get your Aleph-X amps up and running, I would be curious to know what you think of them in comparison to your very nice looking F5 build! I have had my Aleph-X amps for a few years now and like them very much. I have been contemplating a "standard" F5 build in a stereo chassis along with a DCB1 preamp board so I'd have an integrated amp (maybe for the office?). I think I might be starting to have too many amps - I'm running out of places to put them...
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Old 23rd February 2013, 03:31 PM   #150
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Eric,

Your site is awesome! I have it bookmarked and read it dozens of times. I enjoyed the other sections as well. Someday, if we ever have room for a HT room, I'll build the bass traps and other stuff too.

The sub needs to be utilized more. After I went DIY there's no .1 system. So I have a dcx2496 on the way. Thinking about a stereo preamp with .1 output as well. Then it shall be more complete. Until we have room for the IB sub!

Thanks for your documentation!
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