Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

FDA: Alientek D8
FDA: Alientek D8
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
Reply
 
Thread Tools Search this Thread
Old 12th February 2018, 03:46 PM   #41
forestsgump is offline forestsgump
diyAudio Member
 
Join Date: Dec 2017
Quote:
Originally Posted by audeo View Post
A minor correction: this "DDX" thing is related only to the output PWM and has nothing to do with any processing or lack of it before output. So, yes, "Tone" is the only setting in D8 which bypasses the internal DSP, but "DDX" can be switched on or off in firmware regardless of the DSP settings. I suppose, in D8 it is always on.
thks for point-out DDX... Ok got it DSP.
  Reply With Quote
Old 12th February 2018, 07:53 PM   #42
Pavekk is offline Pavekk  Russian Federation
diyAudio Member
 
Join Date: Feb 2018
Guys, I need a firmware for the XMOS version, help!
  Reply With Quote
Old 13th February 2018, 05:26 PM   #43
Launagis is offline Launagis  Lithuania
diyAudio Member
 
Join Date: Dec 2015
Quote:
Originally Posted by Pavekk View Post
Guys, I need a firmware for the XMOS version, help!
I've downloaded the driver from this site today:
Alientek D8 XMOS USB drivers and English: bravomail
works fine, but i''m not responsible if anything goes wrong

I have a few questions myself:

1) How to open the D8? I unscrewed all the screws, but the thing is still tight and not moving apart.
2) Which of the EQ positions i have to use to achieve the best sound? I assumed it was Flat, then read in manual, that it was Normal and someone suggested that it's Tone. I suspect the Tone is right, but it produces more bass than my Cyrus amp, so i'm not sure.
3) If i use weaker power supply (24v 3a), can it have impact on the sound quality (not the power)?
  Reply With Quote
Old 13th February 2018, 08:20 PM   #44
audeo is offline audeo
diyAudio Member
 
Join Date: Aug 2017
Quote:
Originally Posted by Launagis View Post
I've downloaded the driver from this site today
Driver is not firmware, these are two different things.

Quote:
Originally Posted by Launagis View Post
1) How to open the D8? I unscrewed all the screws, but the thing is still tight and not moving apart.
Pull off the turning knob, unscrew the front screws, then remove the front panel and pull out the white ribbon from the front panel socket (carefully!), then unscrew 4 rear screws and pull the rear panel with the PCB and the outer box apart.

Quote:
Originally Posted by Launagis View Post
2) Which of the EQ positions i have to use to achieve the best sound?
"Tone" is the most authentic (the least intrusive) EQ setting. Whether it is the best sound for you or not, only you can decide.

Quote:
Originally Posted by Launagis View Post
3) If i use weaker power supply (24v 3a), can it have impact on the sound quality (not the power)?
It should not until you try to get more power out of your amp then your PSU can provide to it.
  Reply With Quote
Old 13th February 2018, 08:58 PM   #45
Launagis is offline Launagis  Lithuania
diyAudio Member
 
Join Date: Dec 2015
Thank you, audeo!
  Reply With Quote
Old 15th February 2018, 08:13 AM   #46
Pavekk is offline Pavekk  Russian Federation
diyAudio Member
 
Join Date: Feb 2018
Quote:
Originally Posted by Launagis View Post
I've downloaded the driver from this site today:
Alientek D8 XMOS USB drivers and English: bravomail
works fine, but i''m not responsible if anything goes wrong

No, not the driver, but the firmware.
The amplifier has broken down. The master said he needs a firmware.
  Reply With Quote
Old 22nd February 2018, 05:38 PM   #47
audeo is offline audeo
diyAudio Member
 
Join Date: Aug 2017
It seems to me that volume level in Alientek D8 is controlled by altering the digital stream before feeding it to STA326 instead of using STA326's internal Master volume register. Can anyone confirm or deny it?
  Reply With Quote
Old 24th February 2018, 05:04 PM   #48
gwingn is offline gwingn  United Kingdom
diyAudio Member
 
Join Date: Mar 2016
What is it that makes it seem so to you?

Quote:
Originally Posted by audeo View Post
It seems to me that volume level in Alientek D8 is controlled by altering the digital stream before feeding it to STA326 instead of using STA326's internal Master volume register. Can anyone confirm or deny it?
  Reply With Quote
Old 24th February 2018, 10:58 PM   #49
forestsgump is offline forestsgump
diyAudio Member
 
Join Date: Dec 2017
I am trying to ID afew of the SMD on D8, anyone knows what are these based on their print and pin#:
1. 4B2R - 5 pin
2. 6x1 - 3 pin
3. 2F75 - 6 pin
4. MOP - 3 pin
5. 775J - 3 pin
  Reply With Quote
Old 25th February 2018, 07:26 AM   #50
audeo is offline audeo
diyAudio Member
 
Join Date: Aug 2017
Quote:
Originally Posted by forestsgump View Post
I am trying to ID afew of the SMD on D8, anyone knows what are these based on their print and pin#:
1. 4B2R - 5 pin
This probably is XC6204 - a 3.3V High Speed LDO Regulator with ON-OFF Control.
  Reply With Quote

Reply


FDA: Alientek D8Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
HiVi D8.8 in a TL kffern Subwoofers 15 31st December 2016 11:33 AM
HiVi D8.8 vs. Eton 11-581 Bass Drivers Steve M Multi-Way 8 27th December 2016 02:44 PM
2pcs Hivi D8.8+ Bass-Midrange ed9 Swap Meet 2 12th July 2016 02:38 AM
FS: FDA-1 balanced DAC Thomas Giz Swap Meet 0 4th April 2013 06:18 AM
FS: FDA-1 balanced DAC Thomas Giz Swap Meet 1 28th November 2012 05:29 PM


New To Site? Need Help?

All times are GMT. The time now is 04:08 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki