AudioPower (DPA-400) Sound pressure improvements? - Page 9 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 27th June 2013, 07:20 PM   #81
HiroPro is offline HiroPro  Canada
diyAudio Member
 
Join Date: Nov 2009
Quote:
Originally Posted by AP2 View Post
For this, we have resolved in some other way.
Sorry for OT:
We are awaiting the arrival of a new module (without smps on board). so we can offer this new + DPS-500 (goes very well at 110Vac) or you can power with transformer (if you think it's better).
As new DPA-series, this module is an exact copy of our DXA-600. only changes the modulator (in part). if you look carefully the section "Amp" of DPA-400/600 with DXA, see exactly the same, including chip and layers.
I show that this is the new DXA (not self Oscillating), as a section of the DPA-xx. qty printed and full test are ready, it should be available in 30 days...hope!

P.S. version present on site, is not this new version.

Regards
What model is this and is it available? DXA-400?

Can you please explain your naming conventions.
  Reply With Quote
Old 3rd October 2013, 08:50 AM   #82
diyAudio Member
 
danny_66's Avatar
 
Join Date: Jun 2005
Location: Lierde
Hello,
Is it possible to lower the gain of the DPA-400 ?
Maybe by changing a resistor somewhere ?
27db is plenty for me, I prefer 10-15db instead of throwing it away in an attenuator.
Regards,
Danny
__________________
My RefSpeaker
  Reply With Quote
Old 3rd October 2013, 09:22 AM   #83
AP2 is offline AP2  Italy
Banned
 
Join Date: Dec 2009
Location: Italy
Quote:
Originally Posted by danny_66 View Post
Hello,
Is it possible to lower the gain of the DPA-400 ?
Maybe by changing a resistor somewhere ?
27db is plenty for me, I prefer 10-15db instead of throwing it away in an attenuator.
Regards,
Danny
Hi, 27 dB is referenced to the FB loop, you can not change this but you can change the gain of the input stage (we have two stages NE5532 as a buffer / preamp., In this case you can lower sensitivity, from 1 Vrms at 2Vrms, changing a res .
But this is a tricky task, it is preferable that at the time of order, you specific input sensitivity.
  Reply With Quote
Old 3rd October 2013, 10:26 AM   #84
diyAudio Member
 
danny_66's Avatar
 
Join Date: Jun 2005
Location: Lierde
Thanks !
Nice that it can be done.
__________________
My RefSpeaker
  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
Anyone one tried AudioPower.it yet? fb Class D 15 5th February 2012 04:14 PM
Which design to have in-a-car-like sound pressure? Doug Kim Multi-Way 39 29th July 2008 11:49 AM
Sound pressure in time domain jamikl Full Range 6 26th March 2006 02:11 AM
Sound pressure, is that the same? destroyer X Solid State 17 9th May 2004 11:51 PM


New To Site? Need Help?

All times are GMT. The time now is 04:00 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