spirts in progress

ho, ho ho mery chrismas!

My spirrits are still not finished!
But at least I had a chance to listen to them; it was, in one word: Orgasmic!
I just twisted the speaker wires to connect them temporary since I still have to put some kind of  finisch on the bare wood. The Amp1 for the klimmuur is also finished so I used it with my mp3 player (its a desecration I know).
The dampening material wasn't put in either so when I will use it with my DAC and proper cables it should definately give me multipple orgasms!

@Tijs Are the speakers for the klimmuur finished yet?
I will deliver the amp to the klimmuur before Tuesday.
It will have to be adjusted to the speakers and I have to check that the heat dissipation is allright...
That means I will HAVE to test it at highpower and see if it overheats :)

Enjoy your chrismas meals!
Greets,
Wybe

Future project: NanoBlaster

Since I am unemployed  I spend lots of time on important stuff: like designing a portable soundsystem.
I dont want a big and bulky device, so I looked for a small full-range driver with a good efficiency.
Found the Faital: 7 cm diameter 8 ohm 100Hz to 20KHz and 91dB efficiency:

http://www.lautsprechershop.de/pdf/faital/faital_3fe20.pdf
Powered with an Amp-6 from 41Hz that runs on 8 Lithium ion cells (14.4V) and supported by solar cells (1W).
If I power the two drivers in stereo this should give me extremely low distortion @ 2x 13,5W.
I plan to build in a switch that can change the output to mono, in that case I will power the drivers in parallel.
This will give me an impedance of 4 ohm which allows more power 2x 25w (at the cost of lower amplifier efficiency and slightly more distortion)

I plan to build it from 9 mm multiplex and it should weigh about 2 Kg while measuring 22,4*15,3*12 cm.
The drivers are situated next to each other with to bass reflex tube's (18mm) in the middle.
During transport they are protected by a lid that also houses the solarcells, opening the lid will power on the amp. It should run at least 15hr @full power without help from the sun, which could add 15%.
I hope it will be small enough to bring to mountaintops where it should be loud enough to bully Die NKBVAU!!

some alternative designs:

In the two alternative designs I pointed each driver 11 degrees to the side.

Ceers,
Wybeler

Amp 1

Some pictures of my latest work 

The Amp 1 I build for the klimmuur, as you can see I had to use the construction glue to fixate the toroids:

The SMD soldering was manageable but could have been neater

 And I also made two power supplies for Harry's DAC. Both of them didn't work instantly, since I misplaced some components. Here's a pic of one of them.

Cheers,
Wybe

DAC's

Hi guys

Time to start dividing our topics into corresponding blogs.
Yes, im neurotic.
I will try to post some pics of the current state my dac is in.

mmm. seeems to work
Well, its still not as nice from the outside as wybe's dac is but i love the space.
Must give a very airy sound ;)
Oh, and notice the hight tech aesthetic approved feet, they will definitly decouple all sound :)

One look from above.

The real casing will even be larger... if it will ever get finished
What a time consuming hobby this is.

Cheers

It looks to me fantastic and I hope to  have a chance to hear this airy sound very soon.
How are you doing on this voltages that were not exactly as determined?

Hey, what I wanted to share is with you was the Colofonium.

Probably you are using already some kind of substitute.
However, if you asked me, I would always had next to me a Colofonim and flood my solder gun with it before touching any element.
It floods tin very nicely and gives a shiny surface. (If it doesn't shine, than the solder was overheated).

Check this:
http://nl.wikipedia.org/wiki/Colofonium 

By the way, what is this green cable doing in our DAC?