diyAudio - Blog Entries
Go Back   Home > Forums > Blogs

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Old

cordells bias spreader

Posted 30th March 2010 at 03:05 AM by klewis

see post 519,520

http://www.diyaudio.com/forums/solid...altrak-52.html
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 1170 Comments 0 klewis is offline
Old

music and equipment reviews

Posted 29th March 2010 at 09:28 PM by klewis

hi fi nervana

music reviews, equipment reviews.

M2Tech HiFace USB – jkeny modded | TírNaHiFi.org
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 378 Comments 0 klewis is offline
Old

speaker projects

Posted 29th March 2010 at 09:00 PM by MisterTwister
Updated 29th March 2010 at 09:14 PM by MisterTwister

I decided to consolidate most of my projects in one page. Twisterspeakers DIY loudspeaker projects
diyAudio Member
Posted in Uncategorized
Views 601 Comments 0 MisterTwister is offline
Old

Ohms Law Calculator

Posted 29th March 2010 at 04:02 PM by klewis

http://www.sengpielaudio.com/calculator-ohmslaw.htm
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 410 Comments 0 klewis is offline
Old

Calculate for resistors in Parallel

Posted 29th March 2010 at 03:58 PM by klewis

http://www.sengpielaudio.com/calculator-paralresist.htm
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 356 Comments 0 klewis is offline
Old
Rating: 2 votes, 4.00 average.

DAC End 2

Posted 29th March 2010 at 02:33 AM by quanghao
Updated 29th March 2010 at 03:16 AM by quanghao

INTRODUCTION

After the good result obtain with the DAC End I have design with Nguyen Quang Hao a set of boards to create a cheaper project with a sonic performances very near.

The No Oversampling DAC give a more natural sound but if you ear the TDA1541 and TDA1543 seem to lose details.

The AD1865N-K with passive I/V give a perfect combination, natural sound and all the details.

The AD1865N-K give the better performances with a 200ohm MK132 Caddock as passive I/V.

In this configuration the output signal is too low to drive any amplifier so I have design for the AD1865N-K the better output stage.

This DAC use a single ended vacuum tube amplifier without the expensive output transformers used in my original DAC End.

The DAC board follows the original design but has been inserted a jump to switch the phase of output signal.

In any vacuum tube stage the signal on the anode is in out phase...
Attached Thumbnails
Click image for larger version

Name:	Picture-077.jpg
Views:	4365
Size:	335.6 KB
ID:	132   Click image for larger version

Name:	Picture-115.jpg
Views:	2688
Size:	407.5 KB
ID:	133  
Attached Files
File Type: zip Cricuit DAC-END.zip (214.4 KB, 887 views)
diyAudio Member
Posted in Uncategorized
Views 6710 Comments 1 quanghao is offline
Old

First spider done.

Posted 27th March 2010 at 07:40 PM by Bas Horneman (Bas Horneman's diyAudio.com blog)
Updated 14th February 2011 at 07:51 PM by Bas Horneman

The Takman resistors have thick copper wires. This makes for wonderfully strong little spiders.

I've also used ceramic terminals strips for the first time and it makes for a nice strong construction.

And I did the ccs for the phase splitter a while ago.

[edit] I used silver solder. But found out that it is NOT necessary with these fakes. Fake or not it make for a great construction.

"TEKTRONIX CERAMIC STRIPS, HISTORY and GENERAL INFORMATION
Tektronix first developed and used ceramic strips in their oscilloscopes in 1952. During the manufacturing process, silver in liquid form is painted in and on the notches of the strips prior to the application of the final glaze and final firing. The silver is then firmly bonded to the ceramic and wires can be soldered directly to the ceramic.

Special silver-bearing solder should be used when soldering to ceramic strips so the silver bonded to the strip does not...
Attached Thumbnails
Click image for larger version

Name:	spider.jpg
Views:	873
Size:	175.4 KB
ID:	130   Click image for larger version

Name:	ccs_phase.jpg
Views:	896
Size:	95.9 KB
ID:	131  
Attached Files
Bas Horneman's Avatar
diyAudio Moderator Emeritus
Posted in Building
Views 1983 Comments 2 Bas Horneman is offline
Old

for pmillet sound card interface

Posted 18th March 2010 at 07:09 PM by klewis

Tonight I found out it is a really good idea to ground the shaft/body of the rotary switch in order to eliminate pick up of 60Hz and its harmonics. I noticed moving my hand closer to the metal knob on this switch resulted in a >20dB increase in 60Hz spectra and the addition of somewhat lower level harmonics at 120Hz, 180Hz, and 240Hz.. I grounded the switch with a piece of 28ga wire between the lock washer and the body of the switch and grounded it to the board ground. This totally eliminated any pick up with no noticeable line frequency or related spectra. (My case is totally shielded on the top and bottom, but not sides, front or rear - and does not appear necessary to do so.)
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 599 Comments 0 klewis is offline
Old

maudio thread

Posted 18th March 2010 at 03:57 PM by klewis

http://www.diyaudio.com/forums/tubes...-question.html
klewis's Avatar
diyAudio Member
Posted in Uncategorized
Views 371 Comments 0 klewis is offline
Old

Side tracked

Posted 18th March 2010 at 01:28 PM by jtktam (Newbie audio DIYer)

I have been side tracked lately. not enough time to do the F5 like I wanted.

I ended up digging up the BOM for mini aleph and ordered the parts for that.. started to solder the parts and found that I needed to soldier mount the resistors because they are way too big for the PCB

I need to double check all the blank spots, clean up the flux on the board and start on the power supply..
diyAudio Member
Posted in Uncategorized
Views 692 Comments 0 jtktam is offline
Hide this!Advertise here!

New To Site? Need Help?

All times are GMT. The time now is 04:33 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright ©1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2