*** The DIY Audio Thread ***

Glad to be of help, should be a very intresting little project, i couldnt believe it when i first got pointed in the direction of this DAC as i hadnt imagined finding anything decent enough to buy the rite side of £100
 
p4radox said:
I was hoping you might show up.:)

Which ones have you built? And would it be feasible to combine one with the above DAC, in the same container?
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I guess it would be ok, but I'd be tempted to have some shielding between the PCB's anyway.

I've only built the amp6 basic, really easy with thru-hole parts, no need to solder SMD things - this is the main thing that puts me off buying thier other kits. If you need more power and channels, you could do a lot worse than the amp 9 basic.

Also, try and use a good 12V or 24V PSU with these amps. I found a real nice one of the bay, 24V 12A output, less than £30, and next to no ripple. :cool:

EDIT:
amp6 needs 12v
amp9 need 24v
 
Yeah I'd already thought about the shielding.

The main problem I suppose will be the different rails required for each circuit.

Any tips on what to look for in a PSU?

Thanks again:)

edit: There's no problem with SMD stuff, I've currently got access to a very well-equipped electronics lab at work. :)
 
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p4radox said:
The main problem I suppose will be the different rails required for each circuit.

Any tips on what to look for in a PSU?
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Even with the right gear, SMD requires practice, but some people prefer soldering SMD's even!

Anyway, just look for a PSU that will supply the rated current with as little ripple as possible. I was powering my amp6 with a LCD screen 12v PSU for a while, and there was some 50Hz hum on my speakers.

Tested it out with a battery pack, hum gone, so crappy PSU basically.
 
I'm thinking of getting the Amp-6 kit. What does it come with? What extra parts would i need?
Would my PC PSU be ok to power it?
 
Katoom said:
I'm thinking of getting the Amp-6 kit. What does it come with? What extra parts would i need?
Would my PC PSU be ok to power it?
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Well a PC PSU isn't ideal but it should work.

I got the Amp6 basic, the extra's I needed was basically a chassis, small heatsink plus a few connectors and cables. Everything else is supplied.
 
dntbloodshot said:
So, would anyone be up for building a Millett Max in the near future? I want to make one but I'm not entirely decided on what parts to get, etc, would be nice to have someone else to talk things over with.

Details: http://www.diyforums.org/MAX/MAXoverview.php
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I would love a tube amp/preamp in my setup just for the look it brings, undecided weather im gonna have a pre amp or headphone amp, that and i need to read into tubes before i do anything as i have no idea about them.
 
Hi guys

I have been silently browsing this thread for a while now with great interest. The work on here is great.

I really want a go at building a Tube Amp for my iPod to go with a pair of bookshelf speakers. So I was wondering if anyone could point me in the right direction for a kit amp. I am a bit of a noob but know how to solder up circuits and studied amplifiers etc at uni.

Any help getting started would be great.
 
Good to see this thread is still active and more people getting involved in DIYAudio :D .

I rarely worked with SMD, I think the main thing is to get the right tip for the job. I used an 18W when I did some work with a tiny point tip. It worked but I think a small chisel tip and mabye 25W would be better.

I agree with Mike and don't suggest valves for a first project. They do indeed use a lot of high voltages and are also quite irrelevant for most electronics you encounter. Something like a chip amp might be best. One like this will usually do for bedrooms http://www.chipamp.com/lm1875.shtml. I built one into a case like these http://www.hammondmfg.com/1455.htm. Really good compact amp, looked decent too and quite cheap. I managed to break it though :( . Will possibly re-build as it made a great practise amp for my electric drumkit :)

I have been busy building the third and final amp for my tri-amplified system. This is the treble amp:

overallinside1xv7.jpg

http://img389.imageshack.us/img389/9733/insideangledfy1.jpg
http://img357.imageshack.us/img357/2746/backandundersidevb0.jpg

Full details here; http://www.diyaudio.com/forums/showthread.php?s=&threadid=125502&perpage=25&pagenumber=1
but for a quick rundown its a dual mono amp based on the Symasym design. Its biased to give about 1W per channel Class-A but 40W per channel class AB is available. Regulated supplies are used. 1W doesn't sound a lot but bear in mind this is for efficient planar tweeters crossed above 4khz so in reality it may never use the class AB power!
 
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A bit of an odd request:

Does anyone know of any cases/project boxes with transparent lids/front panels?

Something along the lines of an aluminium Hammond enclosure but with a perspex lid. It'll be used for my new class D amp/DAC when I decide to start building.
 
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