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

Multi-Way Conventional loudspeakers with crossovers

Thoughts on DSP multiamp/attenuator setup?
Thoughts on DSP multiamp/attenuator setup?
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 9th January 2018, 10:30 PM   #21
mark100 is offline mark100  United States
diyAudio Member
 
Join Date: Dec 2010
Quote:
Originally Posted by scottjoplin View Post
Mark, what you really mean is that you attenuate last of all so all the nasties are lessened. Someone recently was thinking of taking that a stage further and attenuating after the amplifier!
Hi Scott, I think that means the same thing....IOW, there isn't a further step.
I mean, all amp attenuation is AFAICT, is lowering amp sensitivity...padding its input.
...do amps even have true variable gain?
  Reply With Quote
Old 9th January 2018, 10:32 PM   #22
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Very few
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 9th January 2018, 10:34 PM   #23
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
Thoughts on DSP multiamp/attenuator setup?
Quote:
Originally Posted by scottjoplin View Post
I'm talking about the analogue attenuation before the amp not casting aspersions on your digital prowess
But it does, it always does. All you can do is minimize it.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 9th January 2018, 10:38 PM   #24
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
You've lost me What do you mean?
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 9th January 2018, 10:40 PM   #25
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
Thoughts on DSP multiamp/attenuator setup?
Read page 89 on that PDF. You'll understand a little better.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 9th January 2018, 10:55 PM   #26
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
I see, even keeping the level high and using pot right at the end is worse. Why is adjustable DAC ref voltage not used more widely? Also is reducing bit depth below 16bits asking for trouble? Have you any idea where the input attenuation is done in the DCX2496?
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 9th January 2018, 11:57 PM   #27
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
My attenuation pre-dsp could have to be pretty severe- I use NCore (and other) amps, so trimming at amp definitely requires an extra pad in much of my use. Otherwise I’m knocking down the input by 50dB- too severe for me! I tend towards horns so the noise situation is key.

PC based is great but good balanced 6ch dacs (not to mention quality ADC) don’t exactly come in under budget. I suppose the thing to do is cash out my Marchand xm126 and use that to fund this adventure.
__________________
"The dawn of Bose created the "Man Cave" and reduced testoterone levels worldwide by 18.5 per cent" Peteleoni
  Reply With Quote
Old 10th January 2018, 04:55 AM   #28
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: SW Florida
Thoughts on DSP multiamp/attenuator setup?
Strange that the DBX deosn't use DANTE. That's the way to go. Seems like DANTE is in everything now - except the DBX.
How would you be getting the signal into the DBX?
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 10th January 2018, 12:06 PM   #29
DorinD is offline DorinD  Romania
diyAudio Member
 
DorinD's Avatar
 
Join Date: Jan 2005
Location: Bucharest
Quote:
Originally Posted by scottjoplin View Post
...Someone recently was thinking of taking that a stage further and attenuating after the amplifier!
That could be me, I am using autoformers after 10Watt amps to power all horns system for normal listening levels. For volume control I am using digital volume (dithered?!) from player, just what Pano proposed. More than than, even the amps have only digital inputs, so the system looks like a "Powered DAC".
__________________
It's never too late having a happy childhood
http://www.homebuilthifi.com/project/5604

Last edited by DorinD; 10th January 2018 at 12:15 PM.
  Reply With Quote
Old 10th January 2018, 12:25 PM   #30
mark100 is offline mark100  United States
diyAudio Member
 
Join Date: Dec 2010
Quote:
Originally Posted by DorinD View Post
That could be me, I am using autoformers after 10Watt amps to power all horns system for normal listening levels. For volume control I am using digital volume (dithered?!) from player, just what Pano proposed. More than than, even the amps have only digital inputs, so the system looks like a "Powered DAC".
Very cool!

@scottjoplin.......wow, your post about attenuation after the amp flew right by me, sorry
  Reply With Quote

Reply


Thoughts on DSP multiamp/attenuator setup?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Thoughts on a unique OB setup badman Multi-Way 4 18th August 2017 10:22 PM
Thoughts/ideas for car audio setup santiu Car Audio 3 17th April 2017 07:35 AM
Need some thoughts on setup with multi-subs. apocalypseon Multi-Way 1 1st December 2013 06:12 PM
New NAS-PC Setup - Thoughts, comments? BadgerManSG PC Based 1 22nd January 2013 08:47 PM
which amp for multiamp patriz Solid State 0 4th June 2002 10:53 PM


New To Site? Need Help?

All times are GMT. The time now is 06:36 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki