[phobus]

Secret Squirrel, that looks awesome. What did you use for the cage?

 

[Secret Squirrel]

I used a 1960-1970’s power supply that I found at a nearby surplus store. It was left over from an aerospace company. It was really well made and easily modified.

 

[steinchen]

Quote:

Originally Posted by Jaypetermen steinchen, nice panels. What FPE tool did you use to make the headphone symbol?

the frontpanel is designed with the german version of http://www.frontpanelexpress.com, the symbols are handmade by myself with Corel Draw, you can download them from http://stonerain.homepage.t-online.de/hpgl.zip and import the symbols into the fpe program

 

[Secret Squirrel]

I finished a gift CMOY that found its home in a Candy Box Lunchbox. I had a switched pot for the power, so I made the LED output adjustable for no real reason.

 

[drewd]

Here's the last prototype of the Millett Hybrid amp, a revision of board from Pete's website. The panels are poplar, the case is a leftover from another project that never went anyplace and it's time for some new sawblades.

n_maher is going to coordinate a group buy for the PCBs for the amp, I think starting next week.

-Drew

 

[RnB180]

beautiful amp! care to show us pics of it in action

 

[drewd]

 

[RnB180]

sweet, as mentioned earlier, I think you should add it to your amp line

good job!

 

[yhmzzz]

Good job..
I like wood case..
Tube + Wood = Beautiful ..

 

[Banfi T.]

Well, the leatest one, the first published here. Essentially an AD797 followed by a single-ended class A bjt output stage. Apart from the transformator, the whole construction is dual mono, the stabilization was done using LM337/317. The quiscent current of the output stage is about 100mA, enough for my 600 Ohm Beyer DT-880. Previously I tried the AD797 on its own and it had no problem driving this high impedance can. It had a very a transparent sound, but sometimes I thought, that it is a bit shy on the bass. Everything was OK, but I missed some drive from the lower registers. Well, this problem is solved, with the output stage and transparency remaind a same. The assembly took two days (friday - 4 hours, saturday - 10 hours (that was a bit too long though)). Anyway, some pictures.

Circuit/1:

Circuit/2:

Audition:

And yes, this thing is HOT!

 

[Gmd]

Don't have any pics online right now of the headphone amps I have built but here are some of the speakers I just finished.

http://gmd.shackspace.com/Speakers/SpeakersAmp.jpg

(note my amazing tv in this picture)
http://gmd.shackspace.com/Speakers/TempSpeakerSetup.jpg

 

[dsavitsk]

 

[Magsy]

Quote:

Originally Posted by Gmd Don't have any pics online right now of the headphone amps I have built but here are some of the speakers I just finished. http://gmd.shackspace.com/Speakers/SpeakersAmp.jpg (note my amazing tv in this picture) http://gmd.shackspace.com/Speakers/TempSpeakerSetup.jpg

Awesome work, you should be very very proud!

Few questions if you don't mind?

What design are they? (url?)
What are they finished in?
How did you cut the large speaker holes (with recess)?
Do they sound as good as they look?

 

[steinchen]

tight fit

but no problem since the mosfets are installed with isolating high performance kapton sets on the 1.5" heatsinks, the smaller film caps (0.1uF, 0.068uF, 0.01uF MKS/MKP types) are mounted "subterrestrial" to leave the place on the upperside for the big film caps (4.7uF, 3.3uF, 0.68uF)

at 80mA bias the 1.5" heatsinks are getting significant warmer than the 2.5" heatsinks in my "maxxed" M³, but I wouldn't call it hot though, still on the safe side

nothing special on the frontpanel, the same design like on my other amps. Since the M³ is THE amp for driving my K1000 I installed an additional dedicated 4pin XLR K1000 jack

 

[amb]

steinchen, very nice!