Active crossover suggestion with F5 - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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
Thread Tools Search this Thread
Old 15th February 2011, 09:48 PM   #21
diyAudio Member
Join Date: Feb 2006
Location: Ioannina
Two B1 and a crossover
  Reply With Quote
Old 21st January 2015, 05:39 AM   #22
oltos is offline oltos  United States
diyAudio Member
Join Date: Mar 2012
Default Newbie Software to Adjust the First Watt B4

Originally Posted by Bksabath View Post
I will be watching this as I am planning on By amp eventually. I had a brief look at Papa's stuff as he has a crossover out on the market. It would be a good idea to start there.

........a program like True RTA (there is better and free stuff out there)...
I definitely will be getting the First Watt B4 to bi-amp my two-way build. But by "better stuff out there", does it require that you be a math & physics genius to use it? At ARTA Software , take a look at the manuals for LIMP to measure impedance (especially the 2nd method on p. 4 &5) and the ARTA program that measures frequency response. Then tell me that someone who barely went beyond pre-calculus could do anything with that freeware. Anything that's free is worth nothing if you don't know how to use it.

So what about True Audio's TrueRTA? With a decent omni electret mic and preamp feeding my M-Audio card, can practically anyone use it to measure and save the active crossover's LF filter and HF filter response? Then after tweaking each one's turnover frequency and/or slope to so that (hopefully) their summed response will look flatter, rather than peaked or dipped? And can TrueRTA then let you overlay all three
curves on top of each other to compare them-and then continue tweaking until the summed response looks a lot flatter?

Is that what TrueRTA lets you do? Or am I all wrong about even how to adjust
the B4 crossover (which in any case only supplements the "by ear" method that Nelson Pass says in the manual that you should mostly go by anyway)?

But if I got the measuring methodology wrong, please describe the correct procedure.

AND, if not TrueRTA, please suggest the easiest to use software to get the job done right too. Thanks.
  Reply With Quote
Old 21st January 2015, 06:50 AM   #23
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
Zen Mod's Avatar
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Originally Posted by oltos View Post
......... Anything that's free is worth nothing if you don't know how to use it. ......
I'm certain that there is entire direction in philosophy , based on that premise

my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote


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
Two-way crossover - suggestion? Defo Multi-Way 19 17th May 2010 10:23 PM
Any suggestion for a 3 way active pc speaker (amps and xover)? hamedfazelm Multi-Way 5 7th May 2010 06:38 PM
Component Suggestion: 2-way active now, 3-way active later CanadianDream Multi-Way 6 3rd August 2007 05:53 AM
Suggestion for simple crossover. GuyPanico Multi-Way 2 5th August 2005 08:56 AM
XVR1 active crossover, discrete active stage promitheus Pass Labs 18 22nd July 2002 02:29 AM

New To Site? Need Help?

All times are GMT. The time now is 01:36 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