Easiest way to correct this dip?

JCoffey · 7th June 2007, 03:48 PM

I'm looking at a couple pairs of these for my car, and for the most part for the price, they seem to be a nice little driver. But there is a 5db dip a little past 1k going up to about 3k, and I was wondering if theres a simple crossover that can correct it and flatten it out a bit. Any ideas or suggestions?

http://www.madisound.com/catalog/pro...d4a966ea5950bc

Keruskerfuerst · 7th June 2007, 03:57 PM

Remove the existing (?) crossover and build a new one.

richie00boy · 7th June 2007, 04:03 PM

Thanks for the link, just seen the 4 inch version and wondering if it will fit in my car.

The crossover is just a cap soldered on the back from the terminals. If you are careful you could remove it and replace it with a better crossover.

JCoffey · 7th June 2007, 04:35 PM

thats pretty much what I was thinking, but I dont really know much of anything about x-over building. Looking at the sock response graph, would that much of a dip be really obvious when listening?

Keruskerfuerst · 7th June 2007, 06:04 PM

A 12dB/oct crossover (LP,HP) would improve the sonic quality by far.

JCoffey · 7th June 2007, 08:44 PM

In order to correct the dip, and build a correct value x-over, I'd need the T\S parameters for the tweeter wouldnt I?

richie00boy · 7th June 2007, 09:12 PM

Yes and you would need to acoustically measure both the tweeter and woofer. Finding the T-S parameters is easy enough, the acoustic measurements is more involved, but a lot of DIYers have done it.

Cal Weldon · 7th June 2007, 09:14 PM

That would be an ideal speaker for me. I often introduce a dip (notch) around there as my ears seem too sensitive in that range.

The price is sure right. Why not get a pair and try them? See if they need a different filter later.

richie00boy · 7th June 2007, 09:25 PM

That would be my approach too. Just get em bought and have a play

JCoffey · 7th June 2007, 09:36 PM

Well thats what I was planning on. I mean hell they're only $25 a pair!

7th June 2007, 03:48 PM	#1
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	Easiest way to correct this dip? I'm looking at a couple pairs of these for my car, and for the most part for the price, they seem to be a nice little driver. But there is a 5db dip a little past 1k going up to about 3k, and I was wondering if theres a simple crossover that can correct it and flatten it out a bit. Any ideas or suggestions? http://www.madisound.com/catalog/pro...d4a966ea5950bc

7th June 2007, 04:03 PM	#3
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Thanks for the link, just seen the 4 inch version and wondering if it will fit in my car. The crossover is just a cap soldered on the back from the terminals. If you are careful you could remove it and replace it with a better crossover. __________________ And yes, there are capacitors in the circuit. One is even employed to form the dreaded bootstrap on the voltage gain stage. Get over it. -Burning Amplifier #2, Nelson Pass www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

7th June 2007, 09:12 PM	#7
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	Yes and you would need to acoustically measure both the tweeter and woofer. Finding the T-S parameters is easy enough, the acoustic measurements is more involved, but a lot of DIYers have done it. __________________ And yes, there are capacitors in the circuit. One is even employed to form the dreaded bootstrap on the voltage gain stage. Get over it. -Burning Amplifier #2, Nelson Pass www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

7th June 2007, 09:14 PM	#8
Cal Weldon diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	That would be an ideal speaker for me. I often introduce a dip (notch) around there as my ears seem too sensitive in that range. The price is sure right. Why not get a pair and try them? See if they need a different filter later. __________________ Read dozens of books about heroes and crooks and I learned much from both of their styles. (JB)

7th June 2007, 09:25 PM	#9
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	That would be my approach too. Just get em bought and have a play __________________ And yes, there are capacitors in the circuit. One is even employed to form the dreaded bootstrap on the voltage gain stage. Get over it. -Burning Amplifier #2, Nelson Pass www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more


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7th June 2007, 03:57 PM	#2
Keruskerfuerst diyAudio Member Join Date: May 2007	Remove the existing (?) crossover and build a new one.

7th June 2007, 04:35 PM	#4
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	thats pretty much what I was thinking, but I dont really know much of anything about x-over building. Looking at the sock response graph, would that much of a dip be really obvious when listening?

7th June 2007, 06:04 PM	#5
Keruskerfuerst diyAudio Member Join Date: May 2007	A 12dB/oct crossover (LP,HP) would improve the sonic quality by far.

7th June 2007, 08:44 PM	#6
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	In order to correct the dip, and build a correct value x-over, I'd need the T\S parameters for the tweeter wouldnt I?

7th June 2007, 09:36 PM	#10
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	Well thats what I was planning on. I mean hell they're only $25 a pair!

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