Thanks very much for these pics Colin, they will be very helpful with my build. Will you be doing the same for the dynamic PSU board? It would be great to see pics of the transformers, dynamic PSU and amp boards all wired together.
Apologies if I've missed it, but can you recommend a transformer we can buy from Farnell?
It will be a while before I can fire it up as I've been slow ordering the parts. Just ordered parts for PSU boards. There are a couple of codes not recognised by the Farnell website and a couple that are no longer available. I'll email you with the details.
I'm gathering myself to begin the project. X_X The ready-made boards are on their way. I will order the case and heatsinks from that Italian modushop place. I'm thinking about toroids. I'm wondering if people could advise on a good place to order some...? Colin has advised me to get 18V ones. Also, any thoughts on internal cabling...? As always my gratitude is on stand-by...
Hi Doc. The toroid item code on the Farnell website is 9532838. This is the 18v item specified by Colin in the BoM. I've got these and most my other bits here now. Just waiting for one more Farnell delivery plus the case. I'll need to make up my boards, but then we are at same point so can help each other muddle through the build.
Thanks James. That's really helpful. And yes, my intention is to progress through the build in a muddling fashion. I'm in awe of your confidence in doing circuits and embarrassed by lack of skills and confidence!
OK. Have ordered a few things this morning. Case & heatsinks, toroids, thermal contact, blutac, short length of string etc.,... I notice that on the full BOM there are things towards the bottom of the list that are not directly related to the PCB (connectors, phono inputs, etc.,...). Which of these will I need given that I have gone for the ready-assembled boards?
Dirty to jump on the bandwagon, but I'm in a similar place in my build. Pcbs nearly all populated, just need to order component shortages. Case fitted with toroids, phono connectors and speaker terminals. Hardest part is drilling and tapping heatsinks to mount pcbs and output devices. Broke M3 tap yesterday need more! Are there any build guides for the psu pcbs? Not sure whether to fit them initially or wIt and see what difference they make later.
The difference is very noticeable Sondale Alan has already fitted maybe he could tell us more.
Mount SMD first, then small R,s then the big ones. Caps and semi power device last.
Now you can by TAPTITE M3 and M4 so you drill a hole 2.6- 2.8mm and screw the M3 in and the M4 use a 3.8mm drill this works fine but do deburr the holes after drilling.
Thanks for the help guys. Soldering and electronics I'm ok at. Metalwork never was a strong point! Psu pcbs 80% populated. All smd done just some caps I couldn't find and semiconductors to go. Can't wait to hear it but also want yo take it slow and not make mistakes.
YouTube is excellent for demo videos. The biggest tip I could have given myself when I started building stuff a few years ago is to take it really slowly and be really patient with myself. I used to want to get it all done in a couple of days, and that was without any electronic experience, which would cause too many puffs of smoke :-O Fortunately time , experience and help from others is valuable.
I was thinking of documenting the whole build process from bags of components through to working amp Col. This will probably be of benefit to users like me who embarking on their first amp build.
James, that's a great idea. As you know from the dddac thread on DIY Audio, the documented builds and upgrades are slways extremely helpful, and interesting for those who are not building.
Colin, M4 it is. I only now notice that there are different lengths of screw. Which (6, 8 and 10mm (12 currently not available)). Which would you consider most appropriate?
Dave, I pay my editorial team a lot of money to make sure my posts are completely and utterly perfect in every conceivable way. I'll be damned if my posts don't get a 2nd, 3rd and even a 4th reading!
Comments
Apologies if I've missed it, but can you recommend a transformer we can buy from Farnell?
Thanks again, James.
Do you have an updated bom with the alternative parts. I'm back from summer hols now and hope to finish off my build.
Cheers, Si
The ready-made boards are on their way.
I will order the case and heatsinks from that Italian modushop place.
I'm thinking about toroids. I'm wondering if people could advise on a good place to order some...? Colin has advised me to get 18V ones.
Also, any thoughts on internal cabling...?
As always my gratitude is on stand-by...
And yes, my intention is to progress through the build in a muddling fashion.
I'm in awe of your confidence in doing circuits and embarrassed by lack of skills and confidence!
I notice that on the full BOM there are things towards the bottom of the list that are not directly related to the PCB (connectors, phono inputs, etc.,...). Which of these will I need given that I have gone for the ready-assembled boards?
By which you mean this...?
You need the plug. Will find p/n
Thanks Paul.
Just noticed the pics of your board.
You will need two for each PCB (the other is for the output/ground.
4 ordered! :-)
Really appreciate your assistance on that one.
I really appreciate your going the extra mile.
(You make my role in this sound so simple...)
:-B
Impressive that they get them out on a bank holiday... Good service. =D>
Cheers, Si
Plenty of lube (WD40 works well) a turn or two, then back off half a turn, and you should be fine
The biggest tip I could have given myself when I started building stuff a few years ago is to take it really slowly and be really patient with myself.
I used to want to get it all done in a couple of days, and that was without any electronic experience, which would cause too many puffs of smoke :-O
Fortunately time , experience and help from others is valuable.
Are the M3 or M4 ones best? Or do I need both...?
M4 it is.
I only now notice that there are different lengths of screw. Which (6, 8 and 10mm (12 currently not available)). Which would you consider most appropriate?
I pay my editorial team a lot of money to make sure my posts are completely and utterly perfect in every conceivable way. I'll be damned if my posts don't get a 2nd, 3rd and even a 4th reading!
Any good source for feet...? (Sorry if repeated, etc.,...).
How about something like these (cheap and cheerful):