what's better, a mid playing high, or a tweet playing low??? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 19th February 2005, 03:55 AM   #1
diyAudio Member
 
Join Date: Sep 2004
Location: Oklahoma City
Send a message via AIM to cody6766
Default what's better, a mid playing high, or a tweet playing low???

so I've been wondering.....

I've been researching raw drivers recently for 3 way (possibly 2 way if i can score some REALLY capable drivers) set up for my car this summer and I was wondering if it's generaly better to have the tweet play lower in it's range or have the mid play higher.

I know there's always a common ground with each pair of drivers that needs to be reached, but let's say the tweet is good and flat down to 2khz and the mid is good and flat up towards 4khz or so. Would you want to stretch the tweet a little lower or the mid a little higher? (assuming xovers were limited and you had to pick one of the 2)

Like I said, I know there are comprimises that need to be made for every driver and install and that a middle ground is usually the best route to go, but is there a good rule of thumb on this subject?


also, feel free to toss out any driver combos you are especially fond of...2 or 3 way. I'm open to anything and everything as long as it'll sound good (don't like bright tweets, i.e. Focal) and have a good/strong low end (60-150hz). Oh, and no deep midbasses, 3" is my limit most likely. I'm just looking for options now so really just throw anything at me.

oh....I"ll probably go all active xovers
__________________
More of a car audio guy but it never hurts to learn about the other side!
~cody~
  Reply With Quote
Old 19th February 2005, 04:20 AM   #2
Stocker is offline Stocker  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Austin
I will vote for extending the midrange up higher. More critical information handled by the same driver with no monkey business from the crossing over.
__________________
Jesus loves you.
  Reply With Quote
Old 19th February 2005, 05:58 AM   #3
diyAudio Member
 
Nappylady's Avatar
 
Join Date: Feb 2003
Location: Salt Lake City
Send a message via ICQ to Nappylady Send a message via AIM to Nappylady Send a message via MSN to Nappylady Send a message via Yahoo to Nappylady
Second the midrange going higher--no nasty distortions in the tweeter when you play louder.
  Reply With Quote
Old 19th February 2005, 06:04 AM   #4
diyAudio Member
 
Join Date: Jan 2004
Location: Toronto, ON, Canada
What diameter would the midrange driver be?
  Reply With Quote
Old 19th February 2005, 07:11 PM   #5
diyAudio Member
 
5th element's Avatar
 
Join Date: Oct 2002
Location: England
Quote:
Originally posted by 454Casull
What diameter would the midrange driver be?

Yeah I was gonna second that too, it all depends on then situation. I would want to take the midrange or midbass as high as possible to make the tweeters life easier. But if you have a capable tweeter you need to think which would sound best.

A 6.5" and a 1" seas millenium tweeter could be crossed from around 1600hz up to say 3000hz, I would not really take a 6.5 higher then 3000hz so that would be the upper limit for the midbass. But the tweeter is equally capable of going much lower so an xover at 2000 might sound better in this application.
__________________
What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz!
  Reply With Quote
Old 19th February 2005, 09:24 PM   #6
diyAudio Member
 
Join Date: Sep 2004
Location: Oklahoma City
Send a message via AIM to cody6766
thanks guys, that's the kind of info I was looking for. Driver size wasn't important to me....I just wanted to know the general rule.
__________________
More of a car audio guy but it never hurts to learn about the other side!
~cody~
  Reply With Quote
Old 20th February 2005, 03:43 AM   #7
diyAudio Member
 
Join Date: Jan 2004
Location: Toronto, ON, Canada
Quote:
Originally posted by cody6766
thanks guys, that's the kind of info I was looking for. Driver size wasn't important to me....I just wanted to know the general rule.
There are a few factors here (not in any order):

1. The maximum SPL you're aiming for
2. The diameter of the midrange driver
3. The linear excursion of the tweeter
4. The power handling of the tweeter (usually not important unless you are aiming for high SPL)

The smaller the diameter of the midrange, the higher you can cross it while maintaining consistent off-axis behaviour (a big plus). The higher the excursion of the tweeter, the lower you can cross it (to prevent beaming of a larger midrange, or to keep the crossover out of the midrange region). The higher the SPL you want, the higher you'll have to cross the midrange and tweeter because you don't want the tweeter to hit xmax limits. But, even if xmax is high, you'll never reach the excursion limit if power handling is too low.

My take on it, anyhow.
  Reply With Quote
Old 20th February 2005, 10:16 AM   #8
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Since this is for in car use, I'd say the directiivity issue is probably not as important as for home audio (based on the fact that there will be so many reflections, and no where to mount the divers at ear height), so provided the mid is well behaved at higher frequencies, then cross over as high as the mid is comfortable


Tony (who really knows very little about car audio) .
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 20th February 2005, 07:08 PM   #9
diyAudio Member
 
Join Date: Sep 2004
Location: Oklahoma City
Send a message via AIM to cody6766
there are quite a few reflections, but I have the worst ones gone. I'll be installing the mid/tweet (possibly midbass too) in kick pannels. I have the underside of my dash carpeted and also my center console. Nothing will be near ear height, total opposite actually, but by using the windows as reflective surfaces it's actually pretty easy to get a good, eye-level sound stage with good imaging. The best car system will never be as good as the best home set up, but it can be pretty good.
__________________
More of a car audio guy but it never hurts to learn about the other side!
~cody~
  Reply With Quote
Old 20th February 2005, 09:18 PM   #10
diyAudio Member
 
5th element's Avatar
 
Join Date: Oct 2002
Location: England
If I were you I would do as VD recommends in the loudspeaker cookbook. Install the mid speakers in the kick panels and then put the tweeters where the windscreen meets the trim of the car, pointing at the listener. Like highlighted in this picture ive bodged together.
Attached Images
File Type: jpg tweetcar.jpg (37.8 KB, 114 views)
__________________
What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz!
  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
Now playing… martyh Analogue Source 2 27th June 2008 02:46 PM
Playing with SMPS... -_nando-_ Everything Else 0 30th November 2007 01:12 AM
Playing with ROMs Zero One Digital Source 0 13th May 2007 12:18 PM
Playing with a Magic Eye. Shoog Tubes / Valves 7 13th January 2005 09:33 PM
6V6 GT, Do they worth playing with them ?? kanaddict Tubes / Valves 6 19th June 2004 12:02 PM


New To Site? Need Help?

All times are GMT. The time now is 04:48 PM.


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