Post pics of your builds....
Oct 31, 2007 at 4:01 AM Post #2,657 of 9,811
Here's my version of the Flexi rack. It's constructed of three-quarter inch mdf. The bottom three shelves are double thick. The second shelf is triple thick. The top, TT shelf is also triple thick, but with a twist. The center piece has 4 large cavities. There is a hole cut from the back into each cavity. I poured each cavity full of lead shot, then plugged each hole. The top shelf alone weighs probably 50 pounds. Needless to say, the whole thing is assembled in stages, and it must be in its final location before that top shelf is put on; there's no moving this thing once it's fully assembled. Of course, it's spiked into the concrete slab. It's finished with a base coat of brushed on water based white primer (Kilz 'cuz I already had it on hand), and then 3 coats of brushed on water based flat black, which makes touch-up easy. I guess you could say this is the Flexi rack built by/for the manic depressive.
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Nov 1, 2007 at 5:35 AM Post #2,658 of 9,811
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just finished my b22 and its sounding fantastic!! got a custom faceplate on its way and still hafta finish up the rear casework as well as neaten up my wiring, but, it works, and thats always a good sign right! more pics to come once i "finish"!
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Nov 3, 2007 at 7:16 PM Post #2,659 of 9,811
few quick pics of a project i started and finished up last night. just needs some casework and then im good to go, sounds fantastic on my 325i though!! bass!
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AND the grado house sound
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amazing!!!!
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Nov 5, 2007 at 8:27 AM Post #2,662 of 9,811
Quote:

Originally Posted by Mazuki /img/forum/go_quote.gif
I was going to wait until I finished the casework, but here's a small preview:

Sonic impressions thus far indicate this to be one hell of an amplifier. I haven't listened to anything else in 2 weeks!



Congrat with your proto, Mazuki !
My proto is much messier due to the use of some off boards parts (large PS filter caps; on the amp, Russian K75 PIO for signal path (C3+C4) caps and huge MKP output caps...). Same impression here about the sound, it passes the "well known 2-tubes DIY hybrid amp" I also have easily
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! I'm currenly on business trip and I really, really miss the sound of this amp
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.
 
Nov 5, 2007 at 2:42 PM Post #2,664 of 9,811
Quote:

Quote:

Mazuki, what is it?


It looks to be a Bijou.


Yup, it's a Cavalli Lovell Futterman aka Bijou.

Quote:

Congrat with your proto, Mazuki


Thanks Ferrari! I've been thinking about changing C3, C4 and C5 caps as well. I'm going to wait until I get my case first. Also you are right about Q1, it does get extremely hot. I think I should be able to find another heatsink to squeeze into that slot though.
 
Nov 6, 2007 at 8:35 AM Post #2,665 of 9,811
Hi - attached is my first effort at a headphone amp. It is not quite finished yet - I have to mount the switch and power light properly, and would like to add DC in. I'm just pleased to have made it this far!

People like the tin?

I have been using the amp with my Alessandro MS-1 headphones - sounds pretty good to me!

cheers,
nik.
 
Nov 6, 2007 at 3:17 PM Post #2,666 of 9,811
looks cool man. unique tin - i like it. congrats on getting into DIY, hopefully you'll have many more successful projects to come! oh and of course - welcome to head-fi!
 
Nov 25, 2007 at 3:28 PM Post #2,669 of 9,811
Finished up the prototype for a discrete I/V stage in my Rotel CD. This player uses the standard Philips late '80s/early '90s players (SAA7210 / SAA7220B / TDA1541a). I was trying to get this finished for the Chiunifi meet last weekend, but hadn't had time to do testing, etc., so I wound up not going (should have anyhow...
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) It sounds really good, much better than any opamps I have rolled through this player. I really wanted to compare it to a G08 or something at the meet.

Mods include:
  1. Shottky PSU diodes (11DQ10 player, 31DQ10 o22)
  2. Tentlabs XO on a PFM Flea board (my own layout), modified to provide /2 direct DAC clocking
  3. Tread board taking ~25Vdc down to 18-20Vdc for the Flea
  4. home layout of an amb o22 PSU for the discrete stage (I needed a smaller board than the o22 at 3.5" x 6.5")
  5. rbroer's less simple I/V for TDA1541a, modified to use 2SA970/2SC2240 transistors, FET buffer per cetoole's I/V stage (I removed this for the time being), and muting relay
  6. home-etched double-sided PCBs (I used tinnit for the first time on these, works pretty well)

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Nov 25, 2007 at 4:03 PM Post #2,670 of 9,811
Now that the cat is out of the bag about the amp that I brought to the NYC meet I'll post a few pictures here.

Balanced mini3 w/ dual TREAD power supplies.

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And an image stolen from the NYC Meet.

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