Crossover Upgrade for Morel Duet

rean1mator · 11th February 2008, 05:08 PM

Hi All,
I've got a pair of Morel Duets that I'd like to Upgrade the Crossover to.

I'm very new to DIY and this would be my first project.

Should I consider building an entirely new crossover network or just upgrade the existing crossover?

If just upgrading would i just upgrade the capacitors with better ones?

I really like the midrange of these speakers but the highs are a little edgy and harsh causing listening fatigue. the tweeters(as well as woofers) are the same as used in the Merlin TSM's so I know I can get better sound out of these.

any help and suggestions would be greatly appreciated.

Iain McNeill · 11th February 2008, 05:29 PM

Just replacing the capacitors with same value/different brand will more than likely change the sound of the speakers and possibly for the worse. You don't know why they were originally selected.

Improving the crossover will require the use of a simulation package like PSPICE or one of the special crossover design packages.

You will need to make measurements of the raw drivers electrical impedance as well as acoustic frequency response and then import this data into your simulation package.

Then you can start playing around. See what the existing crossover does in your simulation and see if it agrees with what you are hearing. Then you can start changing things and see if it makes things better.

By going back and forth between listening to various crossover designs and modelling their performance in the simulator you can eventually navigate yourself to something that pleases you.

Pretty complex stuff but TONS of fun!!!

nicoch58 · 11th February 2008, 07:20 PM

change the caps and resistor on tw ,big difference

best guide http://www.humblehomemadehifi.com/Cap.html

I use clartycaps SA ,sweet sound at good price

rean1mator · 11th February 2008, 07:56 PM

what do you mean by "...on tw..."

Quote:

Originally posted by nicoch46
change the caps and resistor on tw ,big difference

best guide http://www.humblehomemadehifi.com/Cap.html

I use clartycaps SA ,sweet sound at good price

nicoch58 · 12th February 2008, 07:57 AM

tweeter caps

11th February 2008, 05:08 PM	#1
rean1mator diyAudio Member Join Date: Feb 2008	Crossover Upgrade for Morel Duet Hi All, I've got a pair of Morel Duets that I'd like to Upgrade the Crossover to. I'm very new to DIY and this would be my first project. Should I consider building an entirely new crossover network or just upgrade the existing crossover? If just upgrading would i just upgrade the capacitors with better ones? I really like the midrange of these speakers but the highs are a little edgy and harsh causing listening fatigue. the tweeters(as well as woofers) are the same as used in the Merlin TSM's so I know I can get better sound out of these. any help and suggestions would be greatly appreciated.

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11th February 2008, 05:29 PM	#2
Iain McNeill diyAudio Moderator Join Date: Oct 2007 Location: Santa Cruz, California	Just replacing the capacitors with same value/different brand will more than likely change the sound of the speakers and possibly for the worse. You don't know why they were originally selected. Improving the crossover will require the use of a simulation package like PSPICE or one of the special crossover design packages. You will need to make measurements of the raw drivers electrical impedance as well as acoustic frequency response and then import this data into your simulation package. Then you can start playing around. See what the existing crossover does in your simulation and see if it agrees with what you are hearing. Then you can start changing things and see if it makes things better. By going back and forth between listening to various crossover designs and modelling their performance in the simulator you can eventually navigate yourself to something that pleases you. Pretty complex stuff but TONS of fun!!!

11th February 2008, 07:20 PM	#3
nicoch58 diyAudio Member Join Date: Oct 2004	change the caps and resistor on tw ,big difference best guide http://www.humblehomemadehifi.com/Cap.html I use clartycaps SA ,sweet sound at good price

12th February 2008, 07:57 AM	#5
nicoch58 diyAudio Member Join Date: Oct 2004	tweeter caps

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