Do I need To Change Crossovers?

azz · 29th July 2004, 6:35 PM

Hey guys
Just a simple question...
I am currently using a pair of old 3way Akai SW-MX105 speakers . They are rated at 6ohms.
Now, they make a rattling on the paper cone when fed low frequencies ( such as form the new Batman trailer, or the drums in The Mists Of Avalon ).
So if I was to replace the woofers, and get 8ohm woofers, would i need to adjust the crossover within them?

Thanks..

Volenti · 29th July 2004, 6:48 PM

It is more than likely that the Akai's used no x-over what so ever on the woofer, or at the very most a small coil.

Feel free to replace it.

azz · 29th July 2004, 7:02 PM

Thanks for the reply

So would it be worthwhile getting a crossover as well?
Wouldn't having the woofer , midrange and tweeter at different Impedence values screw around with the volumes ?

Any sites or guides would be appreciated, as I think I need to learn about tuning crossovers and such, so I have SOME idea of what I'm doing...

FuK[NuTz]2k · 29th July 2004, 8:01 PM

well the different impedences would change the crossover points, though i'm not familiar with home audio so this answer may be very limited in application

Volenti · 30th July 2004, 5:49 PM

Quote:

Originally posted by azz
Thanks for the reply

So would it be worthwhile getting a crossover as well?
Wouldn't having the woofer , midrange and tweeter at different Impedence values screw around with the volumes ?

Any sites or guides would be appreciated, as I think I need to learn about tuning crossovers and such, so I have SOME idea of what I'm doing...

A crossover can be usefull, however many woofers will roll off naturally at higher frequencies and can, depending on the specific application, sound better with no x-over than with one.

The specific impedance of each driver doesn't really matter (within reason), it's the relitive efficiency of each that counts.

http://www.diyaudio.com is a very good site to learn about all things audio.

At this point in time one of these woofers;

CW2110 (8'')
CW2119 (10'')
CW2125 (12'')

Available from Jaycar, are best suited for your application.

29th July 2004, 6:35 PM	#1
azz Member Join Date: Nov 2002 Location: Heidelberg, Melbourne Posts: 3,809	Do I need To Change Crossovers? Hey guys Just a simple question... I am currently using a pair of old 3way Akai SW-MX105 speakers . They are rated at 6ohms. Now, they make a rattling on the paper cone when fed low frequencies ( such as form the new Batman trailer, or the drums in The Mists Of Avalon ). So if I was to replace the woofers, and get 8ohm woofers, would i need to adjust the crossover within them? Thanks.. __________________ www.aaronsheehanphotography.com Redbubble My Flickr OCAU MetaL Club Member #13 - Trades: Wuzmot X2, Shanebrooks, Rickster

29th July 2004, 6:48 PM	#2
Volenti Member Join Date: Jul 2001 Location: Maryborough, QLD Posts: 1,457	It is more than likely that the Akai's used no x-over what so ever on the woofer, or at the very most a small coil. Feel free to replace it. __________________ OCAU Extreme Cooling Club H2O Member AMD 2100b@2.430, 1.9v,187x13 ATI Radeon 9700 PRO@400/345 DIY Impingment Block/Iwaki MD-20RZ/Evaporative cooling

29th July 2004, 7:02 PM	#3
azz Member Join Date: Nov 2002 Location: Heidelberg, Melbourne Posts: 3,809	Thanks for the reply So would it be worthwhile getting a crossover as well? Wouldn't having the woofer , midrange and tweeter at different Impedence values screw around with the volumes ? Any sites or guides would be appreciated, as I think I need to learn about tuning crossovers and such, so I have SOME idea of what I'm doing... __________________ www.aaronsheehanphotography.com Redbubble My Flickr OCAU MetaL Club Member #13 - Trades: Wuzmot X2, Shanebrooks, Rickster Last edited by azz; 29th July 2004 at 7:05 PM.

29th July 2004, 8:01 PM	#4
FuK[NuTz]2k Member Join Date: Jun 2001 Location: Melbourne Posts: 1,229	well the different impedences would change the crossover points, though i'm not familiar with home audio so this answer may be very limited in application