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Old 06-26-2006, 01:11 PM   #1
HolyMahwah
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Join Date: Jan 2004
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2004 WRX -> Billy-fied

Default speaker fuzz/static in 1K-2K range

I have a set of Polk db1000 tweeters which are bi-amped with a set of matching 6.5" drivers (also Polks). The passive x-overs which came with the tweeters are wired in-line with them after the amp since the HPF can only be set as high as 500Hz. Amp is a Directed Audio 4600X.

Since putting them in, I can hear a distinct "fuzziness" which is most discernable in the 1-2KHz range. This causes the treble not be clear and distinct...kinda like the way a radio station that is just slightly off-tune will sound.

Anyone have any ideas as to what I should check? I've attempted to narrow down the range in which the "fuzz" appears in by playing with the EQ on the HU, although I can tell it comes from the tweeters and not the woofers. Bad x-over? Bad source? Bad tweeters? I just put them in yesterday, came NIB from a dealer last week, all sealed up.



Thanks,
Dave
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Old 06-27-2006, 01:50 PM   #2
HolyMahwah
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nada?
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Old 06-27-2006, 01:59 PM   #3
armand1
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If you haven't already, maybe you could try to pin it down by disconnecting a tweeter at a time, then swap crossovers (or connections to them). That should at least tell you if the problem is in *one* tweeter or crossover. To see if the problem is in the source, do you have an additional speaker set (or maybe headphones) you could hook up?
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Old 06-27-2006, 06:41 PM   #4
tcs007
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Are you running two crossover per channel? One active, one passive? Or just the passives?
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Old 06-28-2006, 11:49 AM   #5
HolyMahwah
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Both, since the active only goes up to 500Hz. I don't know the exact specs on the Polk x-over, but I would assume it was somewhere in the 3-4kHz range.
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Old 06-28-2006, 01:04 PM   #6
eggeegg
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hmmmm

Last edited by eggeegg; 06-28-2006 at 01:19 PM.
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Old 06-28-2006, 01:16 PM   #7
HolyMahwah
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Yeah, I double-checked all the polarities. There don't seem to be any issues with phasing. I'm going to try swapping sources to see if it's coming from the HU itself.
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