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Jaycar Response splits crossover point

Started by mac_man_luke, Sep 19 2007 09:21 PM

7 replies to this topic

#1 mac_man_luke

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Posted 19 September 2007 - 09:21 PM

Soon im looking at replacing my alpine 2ch amp with a DDC4a

When i do, im looking at changing to 2 way active.

To start off ill be using my jaycar splits, crossovers controlled by my alpine 9887.

Just like to know what would be a good crossover point to start off with?

I know each car/position is different etc.

Any idea of the passive crossover point?

thanks
Luke
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#2 Alex (rbimdxe)

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Posted 19 September 2007 - 09:44 PM

Well, I PM'd Damon about it, and he said he thought it was around 5Khz..

I'm running the mid's LP'd at 1.6kHz@24dB/oct, and the tweeters HP'd at 1.2kHz@24dB/oct and it sounds great to me. excellent midrange and highs.
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#3 mac_man_luke

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Posted 19 September 2007 - 10:12 PM

5k is pretty high lol

will pm him
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#4 Alex (rbimdxe)

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Posted 20 September 2007 - 12:51 AM

His exact words were something along the lines of it being so long since he had worked with them, that from his best recollection it was somewhere around there....

As I said, I'm running them at 1.6 for the mid-high, and 1.2 for the tweets. both at 24dB/oct.
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#5 mad89

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Posted 20 September 2007 - 01:04 AM

Whoa Alex! 1.2khz for tweeters is waaaaaaay low!

I would bring it upto at LEAST 2.5k @ 24db, and work around there. 2k, 2.5k, 3.15k, 4k are all options. I think around 2.5k should be sweet.

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#6 mac_man_luke

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Posted 20 September 2007 - 08:01 AM

well i pmed him - his response was to start at 6k and work down to no lower than 4k with 12db slope

he said could probably go a bit lower with a steeper slope
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#7 20Hurtz

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Posted 20 September 2007 - 08:14 AM

1.2 wtf look at the res freq as a general rule the lowest you can cross them over is an octave above the tweets res freq.
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#8 zion187reigneth

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Posted 20 September 2007 - 08:19 AM

try a 4khz@12 slope for starters, i dont think you would want to go any higher.
It proberly depends more on how much volume u flog your system with.............cors

Edited by zion187reigneth, 20 September 2007 - 08:21 AM.

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