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Old 28th January 2003, 02:40 PM   #1
diyAudio Member
Join Date: Feb 2002
Location: K
Default Xover for 9900 & 8545


I am planning to install SS 9900 + 8545 to the front door of my car.

I searched this forum, but I found some design for other units.
or 2.5 way.

I need 2 way XO design.

Any design or opinion will be helpful.
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Old 29th January 2003, 01:50 AM   #2
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Join Date: Oct 2002
Location: Barrie, Ontario, Canada
mounting them in the door of your car opens up a whole big can o worms. Enclosures are usually incorporated into the design of a crossover. By mounting them in a car door, you may get some nasty resonances or peaks that may need to be tamed with the crossover. Best thing to do is get them in the doors of your vehicle, take some measurements, and builed the crossovers based on the measured values.

I know this doesnt really help much.
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Old 29th January 2003, 12:08 PM   #3
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Join Date: Feb 2002
Location: K
Thank you for your advice.

I just want to see the examples which I can get some ideas.

But I don't have any measurement system. So I must do it by my ears.

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Old 29th January 2003, 02:28 PM   #4
Wizard of Kelts
diyAudio Moderator Emeritus
Join Date: Sep 2001
Location: Connecticut, The Nutmeg State
Here is the crossover schematic for the ScanSpeak Reference Monitor, which uses the two drivers you have:

Here is the page for all the drawings of the Reference Monitor

Spacing between the center of the woofer and the center of the tweeter can affect the response of a crossover. The spacing here is 6 5/8", or 167 mm. Of course, in a car, you cannot control such things, but if the spacing in your vehicle is anything near that, especially less than that, you should be okay.

PS: the above links were originally found by our member Softman and posted in the following thread:
Help with filter for Scan Speak 18W/8545 and D2905/9500 combo.

Anyway, good luck!
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File Type: gif scan speak reference monitor schematic.gif (33.1 KB, 299 views)
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