how much difference if i use a.82 and a .24 coil instead of the recomended .83mh and .25mh.also a 6.8uf on the mid and a3.3uf on the tweeter.these are the only values i can get from solen.should this be ok .a 12guage 1.8mh +14g .82mh and 18guage .24mh+18g 1.5mh on notch filter.and using 10 watt resistors instead of the 5watts it states. thanks for your help.
Why don't you use the latest version of the cross-over by Troels: he has eliminated the peak at 2KHz. See the following link:
http://members.chello.se/jpo/2_5_clone_without_notch_filter.pdf
If you want to use the ScanSpeak 95000 tweeter instead, Troels has quite eliminated the sibilance which characterized the 2.5. The link is below:
http://members.chello.se/jpo/New_2_5_clone_tweeter_crossover_and_speaker_setup.pdf
If you want to use the values you suggest, they are within the error range of the real values. You can use all the values that you suggest.
http://members.chello.se/jpo/2_5_clone_without_notch_filter.pdf
If you want to use the ScanSpeak 95000 tweeter instead, Troels has quite eliminated the sibilance which characterized the 2.5. The link is below:
http://members.chello.se/jpo/New_2_5_clone_tweeter_crossover_and_speaker_setup.pdf
If you want to use the values you suggest, they are within the error range of the real values. You can use all the values that you suggest.
Dave K
There is no problem with buying an inductor that is the next value up and removing a turn or two to get the right value (except you need an inductance bridge to measure the value). Also use caps in parallel to get the right values.
In my experience the clone is very sensitive to small changes in component values. For example adding 0.1uF across the 3.3uF cap makes a noticeable difference to the sound, however the measurements will barely pick this up.
I would also recommend trying the original XO (with a minor mod) to see if you find it preferable to the Troels version(s). The version I suggest below does not measure as well but IMVHO it sounds much better (no offence meant to Troels, for without his great work and documentation I would never have embarked on this project).
The XO I recommend is the original (Chinese) one with the tweeter phase corrected (i.e. out of phase) and 2.2R in series with the 8.5uF capacitor, the 47R resistor in // with the 1.5uH is also removed. I also use 6R as the series tweeter resistor but this should be set for your system and preference.
Hope this helps.
Dave
There is no problem with buying an inductor that is the next value up and removing a turn or two to get the right value (except you need an inductance bridge to measure the value). Also use caps in parallel to get the right values.
In my experience the clone is very sensitive to small changes in component values. For example adding 0.1uF across the 3.3uF cap makes a noticeable difference to the sound, however the measurements will barely pick this up.
I would also recommend trying the original XO (with a minor mod) to see if you find it preferable to the Troels version(s). The version I suggest below does not measure as well but IMVHO it sounds much better (no offence meant to Troels, for without his great work and documentation I would never have embarked on this project).
The XO I recommend is the original (Chinese) one with the tweeter phase corrected (i.e. out of phase) and 2.2R in series with the 8.5uF capacitor, the 47R resistor in // with the 1.5uH is also removed. I also use 6R as the series tweeter resistor but this should be set for your system and preference.
Hope this helps.
Dave
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