Go Back   Home > Forums > Commercial Sector > Manufacturers > Twisted Pear

Twisted Pear Superior quality electronic kits

Reply
 
Thread Tools Search this Thread
Old 19th December 2012, 12:17 PM   #1811
diyAudio Member
 
Russ White's Avatar
 
Join Date: Jan 2005
Location: Nashville, TN, USA
Send a message via Yahoo to Russ White
Try directly wiring - instead of using the uFL.

Your firmware is just fine. I don't think this is an unlock issue, as you are getting noise. The noise is a symptom of a deeper issue.

It could also be that the waveio is damaged. Did you ever short a digital output?
__________________
Less pulp more juice Twisted Pear Audio.

Last edited by Russ White; 19th December 2012 at 12:20 PM.
  Reply With Quote
Old 19th December 2012, 12:40 PM   #1812
diyAudio Member
 
Join Date: Sep 2004
Quote:
Originally Posted by Russ White View Post
Try directly wiring - instead of using the uFL.

Your firmware is just fine. I don't think this is an unlock issue, as you are getting noise. The noise is a symptom of a deeper issue.

It could also be that the waveio is damaged. Did you ever short a digital output?
I will try the direct wiring. Digital output was not shorted (yet).
  Reply With Quote
Old 20th December 2012, 08:34 PM   #1813
diyAudio Member
 
Join Date: Sep 2004
It looks, that i solved the problem.

First thing - Buffalo II DAC has a switch at the digital input. It should be "ON" when you want connect spdif and should be "OFF" when you want connect i2s or dsd. On my dac the switch was in ON position ....

The strange noise dissappeared, but there was a break every 12 seconds when listening to SBT and every 20s when listening to Notebook.

I resetted completely SBT, installed new 7.8 beta firmware, than EDO app and than update to a newest kernel from Triode - all problems dissappeared.

I will test notebook in a few days, but it looks, that my SBT/WaveIO/Buffalo II are now correctly set and adjusted.
  Reply With Quote
Old 21st December 2012, 01:35 AM   #1814
diyAudio Member
 
Russ White's Avatar
 
Join Date: Jan 2005
Location: Nashville, TN, USA
Send a message via Yahoo to Russ White
That means that yes you basically did short the output In any case, glad you seem have it sorted.
__________________
Less pulp more juice Twisted Pear Audio.
  Reply With Quote
Old 21st December 2012, 01:09 PM   #1815
diyAudio Member
 
Join Date: Sep 2012
Trying to adjust a Placid HDBP for Legato. (and than connect it to BIIISE) I got about 14,4V DC at the output and I'm measuring 378mV between TP-VIN ad TP-CSS. The heatsinks closest to the DC output connector get really hot. Can't touch them. The heatsinks close to the big elco's get hot too but not as hot as the other ones. Is this correct or am I making a mistake?
  Reply With Quote
Old 21st December 2012, 01:12 PM   #1816
diyAudio Member
 
Russ White's Avatar
 
Join Date: Jan 2005
Location: Nashville, TN, USA
Send a message via Yahoo to Russ White
You are forcing the shunt transistor to shunt all of the current. So yeah it will get really hot. When you have you load using some of the current instead of the shunt element shunting it that transistor/heatsink will be much cooler. Also just a friendly reminder that this type of thing should be taken to the support forum - not here.
__________________
Less pulp more juice Twisted Pear Audio.

Last edited by Russ White; 21st December 2012 at 01:14 PM.
  Reply With Quote
Old 21st December 2012, 01:13 PM   #1817
diyAudio Member
 
Join Date: Sep 2012
Will do that
  Reply With Quote
Old 21st December 2012, 01:15 PM   #1818
diyAudio Member
 
Russ White's Avatar
 
Join Date: Jan 2005
Location: Nashville, TN, USA
Send a message via Yahoo to Russ White
Not a big deal, just cuts down on noise.
__________________
Less pulp more juice Twisted Pear Audio.
  Reply With Quote
Old 5th February 2013, 09:26 PM   #1819
diyAudio Member
 
Join Date: Feb 2011
Default Stereo imaging off center

I'm using my BII /IVY for about 1,5 jears now and am very satisfied with it. But there is one anoying problem. The stereo imaging of my BII seems to be slightly off center. It's like the balance is shifted slightly to the left. I checked with multiple sources (waveIO / SPDIF) and multiple amplifiers but the BII or IVY seems to be the problem. All the gain resistors on the IVY are standard and identical on both channels (measured them). The psu's deliver the correct voltages/currents and are shunted on 60ma. Beside this problem the sound is absolute delight. Somebody knows the solution to this issue or can give me some trouble shooting directions?
  Reply With Quote
Old 6th February 2013, 12:03 PM   #1820
diyAudio Member
 
Russ White's Avatar
 
Join Date: Jan 2005
Location: Nashville, TN, USA
Send a message via Yahoo to Russ White
The source of this "imbalance" could be a number of things.

You could add little more output to the right side.

Or you could use custom firmware and control the balanced digitally.
__________________
Less pulp more juice Twisted Pear Audio.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Buffalo Tweaking jkeny Digital Line Level 316 10th March 2010 09:14 PM
Hello from Buffalo NY chris emo Introductions 1 13th July 2007 04:24 AM
Buffalo brains macmeech Introductions 1 15th June 2004 06:03 PM


New To Site? Need Help?

All times are GMT. The time now is 05:50 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2