Speakerplans.com Homepage
Forum Home Forum Home > General > Electro Frying Forum
  New Posts New Posts RSS Feed - Utradrive 24db or 48db slope?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Utradrive 24db or 48db slope?

 Post Reply Post Reply
Author
Message
ychole audio View Drop Down
Young Croc
Young Croc
Avatar

Joined: 18 January 2007
Location: United States
Status: Offline
Points: 625
Post Options Post Options   Thanks (0) Thanks(0)   Quote ychole audio Quote  Post ReplyReply Direct Link To This Post Topic: Utradrive 24db or 48db slope?
    Posted: 29 October 2015 at 8:22pm
When using Behringer Ultradrive , which one is preferred 24db or 48db slope and why?
I am ZERIEL'S dad!!!
Back to Top
toastyghost View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 09 January 2007
Location: Manchester
Status: Offline
Points: 10920
Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:22pm
Depends on the cabinet and the alignment to the other boxes in the system.
Back to Top
amlu View Drop Down
Young Croc
Young Croc
Avatar

Joined: 30 November 2009
Location: london
Status: Offline
Points: 740
Post Options Post Options   Thanks (1) Thanks(1)   Quote amlu Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:29pm
personal preference, play with  the settings one day and hear what sounds better.
48db for HPF on the bass for me.
Back to Top
ychole audio View Drop Down
Young Croc
Young Croc
Avatar

Joined: 18 January 2007
Location: United States
Status: Offline
Points: 625
Post Options Post Options   Thanks (0) Thanks(0)   Quote ychole audio Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:36pm
Boxes are WSX copies on subs, dual 18 reflexes on kick, omnitop12's on tops. Thank you.
I am ZERIEL'S dad!!!
Back to Top
app View Drop Down
Old Croc
Old Croc


Joined: 26 December 2013
Location: Finland
Status: Offline
Points: 2435
Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:36pm
my subs have a recommendation of 12db hipass,so depends on the box.

different crossover types and slopes also have different advantages and disadvantages.
"what!?"
Back to Top
app View Drop Down
Old Croc
Old Croc


Joined: 26 December 2013
Location: Finland
Status: Offline
Points: 2435
Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:57pm
Ive read that "right" crossover looses the sound source so that you cant tell exactly from which speaker the sound is coming. If that makes sense to youBig smile Lower order filters overlap more so its not so distinctive of which speaker the sound comes from. Making the sound system one system playing. Not different speakers playing. Did that make any sense?LOL
"what!?"
Back to Top
ychole audio View Drop Down
Young Croc
Young Croc
Avatar

Joined: 18 January 2007
Location: United States
Status: Offline
Points: 625
Post Options Post Options   Thanks (0) Thanks(0)   Quote ychole audio Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 8:59pm
Originally posted by app app wrote:

Ive read that "right" crossover looses the sound source so that you cant tell exactly from which speaker the sound is coming. If that makes sense to youBig smile Lower order filters overlap more so its not so distinctive of which speaker the sound comes from. Making the sound system one system playing. Not different speakers playing. Did that make any sense?LOL
 
Thanks for the wonderful explanation, you nailed it!
I am ZERIEL'S dad!!!
Back to Top
toastyghost View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 09 January 2007
Location: Manchester
Status: Offline
Points: 10920
Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 9:10pm
Except that isn't really right or true. You use the correct slopes and delay settings for each passband to allow the different components and boxes to be as close to in phase and of equal magnitude (-6dB ideally) at the acoustic crossover point.

Or at that's the aim, in reality it isn't always possible. I'm afraid nobody can tell you the settings unless they have exactly the same boxes with the same components inside, you can guess but that's all it really is, a guess. Measurement is the correct way.

Edited by toastyghost - 29 October 2015 at 9:10pm
Back to Top
app View Drop Down
Old Croc
Old Croc


Joined: 26 December 2013
Location: Finland
Status: Offline
Points: 2435
Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 29 October 2015 at 9:27pm
You can download winisd to simulate your box/driver combo there and play around with different filters and see how they affect the xmax,group delay and stuff.


"what!?"
Back to Top
snowflake View Drop Down
Old Croc
Old Croc


Joined: 29 December 2004
Location: Bristol
Status: Offline
Points: 3118
Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2015 at 4:06pm
good article here:

http://sound.westhost.com/ptd.htm

ideally you would choose slopes that give a constant phase difference (parallel slope) between the two bands when combined with the phase response of the loudspeakers. In practice if medium to high order slopes are used, the crossover region is very narrow and it is sufficient just to get the drivers in phase at the crossover point. lower order slopes have better transient response but high order slopes are better at eliminating out-of-band distortion.

original question was 48dB or 24dB. 24dB probably does a good enough job of reducing out-of-band frequencies so 48dB is overkill and degrades the transient response unnecessarily.
Back to Top
levyte357- View Drop Down
Old Croc
Old Croc
Avatar

Joined: 27 July 2012
Location: UK, South East
Status: Offline
Points: 8128
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2015 at 4:43pm
Originally posted by snowflake snowflake wrote:

original question was 48dB or 24dB. 24dB probably does a good enough job of reducing out-of-band frequencies so 48dB is overkill and degrades the transient response unnecessarily.


This...

Type of slope is just as important.

Global Depopulation - Alive and Killing.
Back to Top
snowflake View Drop Down
Old Croc
Old Croc


Joined: 29 December 2004
Location: Bristol
Status: Offline
Points: 3118
Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 30 October 2015 at 5:47pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by snowflake snowflake wrote:

original question was 48dB or 24dB. 24dB probably does a good enough job of reducing out-of-band frequencies so 48dB is overkill and degrades the transient response unnecessarily.


This...

Type of slope is just as important.


Bessel and Linkwitz-Riley supposedly have less over-shoot and ringing than Butterworth
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.141 seconds.