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Multi-Way Conventional loudspeakers with crossovers

Classix II tweeter question
Classix II tweeter question
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Old 28th April 2015, 08:39 AM   #1
CR23 is offline CR23
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Join Date: Dec 2014
Default Classix II tweeter question

Just completed my first ever build, PC's Classix II. Great project and they sound good, but the tweeters seems a little muted. I realize they are not supposed to be overly bright, but ....

Are there any common mistakes that I should look for first?

Thank you for any suggestions.

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Old 28th April 2015, 10:57 AM   #2
Dissi is offline Dissi  Switzerland
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Join Date: Sep 2012
Location: Winterthur
Cheap tweeters usually do vary in sensitivity and top end frequency response a little bit more than expensive ones. Tweeter level also is a matter of taste and room acoustics. However, provided you wired the crossover correctly, you still can exchange the two resistors in the tweeter section (4 Ohm in series and 6 Ohm in parallel). That will rise the tweeter level by 2.5 dB and should make a difference.
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Old 28th April 2015, 06:38 PM   #3
dumptruck is offline dumptruck  United States
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Join Date: May 2010
Location: MN
They are a mellow-voiced speaker. However, if you have the tweeter polarity wrong (it should be inverted compared to the woofer), it would sound pretty dead, so check that.
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Old 28th April 2015, 07:07 PM   #4
sreten is offline sreten  United Kingdom
Join Date: Nov 2003
Location: Brighton UK

First builds can contain x/o layout issues.
All 3 inductors should be orthogonal.

rgds, sreten.

Last edited by sreten; 28th April 2015 at 07:13 PM.
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Old 5th May 2015, 09:07 PM   #5
CR23 is offline CR23
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Join Date: Dec 2014
Thank you all for the feedback. Will be second checking the x overs, polarity, and layout.
Let you know if I find a problem.
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Old 2nd June 2015, 05:03 PM   #6
CR23 is offline CR23
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Join Date: Dec 2014
Had the tweeter connected with the wrong polarity, due to a wire color issue I created.

Thank you for all the input!
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