Bigman80
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Post by Bigman80 on Mar 25, 2022 12:06:14 GMT
Cheers Ali. I'm knackered. Been building since Tuesday. Playing now and sound cracking already. I’m finally loosing it. I read ‘sound crackling already’ It is? Blimey Hahaha No, it sounds absolutely fine. Got it running in, in the garage. It's never sounded so good in there lol |
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Post by Deleted on Mar 25, 2022 13:14:08 GMT
You will have to build a 2nd one for the house.
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Post by robbiegong on Mar 25, 2022 13:17:18 GMT
Get those hours on mate, you've tapped nothing yet, trust me ....
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Bigman80
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Post by Bigman80 on Mar 25, 2022 14:55:45 GMT
You will have to build a 2nd one for the house. No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. |
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Bigman80
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Post by Bigman80 on Mar 25, 2022 14:56:05 GMT
Get those hours on mate, you've tapped nothing yet, trust me .... Oh I know Rob. |
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Post by Deleted on Mar 25, 2022 16:23:22 GMT
You will have to build a 2nd one for the house. No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. I didn’t put thermall paste on mine either. Tom does not instruct to either. |
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Post by sq225917 on Mar 25, 2022 17:45:13 GMT
Heatsink on my monos barely reach above ambient, I do have bergquist sheet between them.
For wire I use 2.5mm for all power, 4mm for speaker run due to length. More than enough.
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Bigman80
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Post by Bigman80 on Mar 25, 2022 18:30:57 GMT
No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. I didn’t put thermall paste on mine either. Tom does not instruct to either. Ah, that's good to know. |
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Post by alit on Mar 25, 2022 18:33:11 GMT
Cheers Ali. I'm knackered. Been building since Tuesday. Playing now and sound cracking already. I’m finally loosing it. I read ‘sound crackling already’ It is? Blimey Yep, you are, can't even spell losing.  |
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Bigman80
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Post by Bigman80 on Mar 25, 2022 18:36:08 GMT
I’m finally loosing it. I read ‘sound crackling already’ It is? Blimey Yep, you are, can't even spell losing. Hahahahaha |
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Post by stevew on Mar 25, 2022 18:49:42 GMT
Yep, you are, can't even spell losing. Hahahahaha The sound you hear is me losing another marble. |
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Post by antonio on Mar 26, 2022 5:27:49 GMT
You will have to build a 2nd one for the house. No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. Very pleased for you Oli, one question should an amplifier not get a little warm to sound at it's best? |
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Bigman80
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Post by Bigman80 on Mar 26, 2022 7:14:02 GMT
No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. Very pleased for you Oli, one question should an amplifier not get a little warm to sound at it's best? I can't think of a metal that's conductivity improves as it's temperature rises? So maybe not? I think it's more important for it to be stable? Gets too hot and shuts down/breaks....vs stays cool, never shuts down? Dunno, never thought about it overly. I suspect that by "warming up" we actually mean "give it some time to get up to operating temp so that it stabilises" Could be any temperature though. |
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Post by Deleted on Mar 26, 2022 7:49:11 GMT
Unless you are driving a big load, the 686 will be ambling along putting out about 1W.
It is not going to break a sweat at that level.
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Post by macca on Mar 26, 2022 8:02:48 GMT
No chance. The class D will do a sterling Job in the garage. I've been in there working most of the day, so I thought I'd have a listen and see how hot it gets in use. Turns out it doesn't get hot at all. The bracket the 686 boards come affixed to are actually cold to the touch. I hadn't put any thermal past between the heatsink and the bracket as I didn't believe it needed any, but have kept an eye on it today. 4 hours if solid High db music and everything is cold to the touch. I may just put some in so I can forget about it lol. Very pleased for you Oli, one question should an amplifier not get a little warm to sound at it's best? No. There's no connection between sound quality and how warm the amplifier gets. |
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Post by antonio on Mar 26, 2022 8:12:42 GMT
Sounds pretty conclusive that temperature doesn't matter as long as it's operating temperature.
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Post by macca on Mar 26, 2022 8:41:40 GMT
I suppose if the internal heat gets too high then components will start to drift in their parameters before they start to fail completely. So you could have too hot, but not too cool.
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Bigman80
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Post by Bigman80 on Mar 30, 2022 16:57:02 GMT
The front panel was finished today. After a lot of indecisive thinking about how I want the panel to look, the choice was taken out of my hands. Unbeknownst to me, the was a dent in the front panel. I hadn't really inspected it as i was focussed on the rest of the stuff I had to do to get this up and running. Long story short, and a few other imperfections coming to light, I opted to have a line machined, this removing a minor, but now visible mark, and we took the small symbol from the Neurochrome logo to hide the dent. It's not how I imagined it when I started out, but I think it's actually turned out pretty well. Fitting the front panel effectively marking this build as complete. Huge thanks to phonomac for his help drilling and tapping the holes, and for the use of his excellent power supply supply. Now, it's time to build some Phonostages.    |
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Post by firebottle on Mar 30, 2022 17:57:41 GMT
That's bl~~dy excellent Oli. Looks class.
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Bigman80
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Post by Bigman80 on Mar 30, 2022 18:19:32 GMT
That's bl~~dy excellent Oli. Looks class. Thanks Al. |
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Post by Deleted on Mar 30, 2022 19:31:26 GMT
The logo is a nice touch.
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Post by macca on Mar 30, 2022 19:44:32 GMT
looks very classy but please tell me you didn't use a blue led on the power switch...
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Post by pete on Mar 30, 2022 19:45:55 GMT
Looks very tidy Oliver and .... kind of familiar!
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Bigman80
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Post by Bigman80 on Mar 30, 2022 20:38:31 GMT
The logo is a nice touch. Thanks K, I think it's turned out nicely. |
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Bigman80
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Post by Bigman80 on Mar 30, 2022 20:39:09 GMT
looks very classy but please tell me you didn't use a blue led on the power switch... Not just blue, ELECTRIC BLUE 🤣 No, it's white, Macca. Couldn't find an amber one. |
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Bigman80
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Post by Bigman80 on Mar 30, 2022 20:40:53 GMT
Looks very tidy Oliver and .... kind of familiar! Cheers Pete. |
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Post by robbiegong on Mar 30, 2022 20:48:41 GMT
Looks top class, must say
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Bigman80
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Post by Bigman80 on Mar 30, 2022 21:15:59 GMT
Looks top class, must say Cheers Rob 👍 |
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Post by brucew268 on Mar 31, 2022 7:07:18 GMT
The front panel was finished today. After a lot of indecisive thinking about how I want the panel to look, the choice was taken out of my hands. Unbeknownst to me, the was a dent in the front panel. I hadn't really inspected it as i was focussed on the rest of the stuff I had to do to get this up and running. Long story short, and a few other imperfections coming to light, I opted to have a line machined, this removing a minor, but now visible mark, and we took the small symbol from the Neurochrome logo to hide the dent. It's not how I imagined it when I started out, but I think it's actually turned out pretty well. Fitting the front panel effectively marking this build as complete. Huge thanks to phonomac for his help drilling and tapping the holes, and for the use of his excellent power supply supply. Now, it's time to build some Phonostages. Yes, very classy and understated. Well done! Who did the work on the front face? |
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Post by electronumpty on Mar 31, 2022 8:02:53 GMT
Looks great , neat take on the logo.
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