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Multi-Way Conventional loudspeakers with crossovers

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Old 2nd April 2013, 02:35 PM   #11
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@ Dissi:
I think I want to use the folowing speakers:
Beyma SM115/N; RCF L15P540 and as a tweeter
Celestion CDX1-1430 NEODYMIUM COMPRESSIE-DRIVER 1 INCH 50 W. 8 OHM
BEYMA TD 194 Profesionele hoorn.
@ strawberry:
Can you show me the curves what that brings to me ??
Thanks in advance.
Regards,
M.
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Old 2nd April 2013, 06:34 PM   #12
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With those drivers, remove the 140 uF and put the 36 uF there. Put a 14 uF in place of the 36 uF. Put a 2.2 uF in place of the 3.9 uF, remove the 6.8 uF. Put the tweeters in parallel to the same points of the crossover. Enjoy.

For fun, try the 140 uF in the first position, in front of the inductor to the midrange. This will remove its bass, in case there is too much bass in the speaker.

If the tweeters are too loud, put an 8 ohm resistor in series with the 7 ohm, or replace with a 16 ohm. If too muted tweeters now, replace the lot with a 10 ohm. Another way to mute the tweeters with your extra 8 ohm resistor is to put it in parallel with the two tweeters already in parallel. That is probably smarter.

Last edited by strawberry; 2nd April 2013 at 06:58 PM.
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Old 2nd April 2013, 06:43 PM   #13
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When the speakers are delivered (I must still order them) I will do the test you mention.
How do you come to the data you give? Can you also simulate ?
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Old 2nd April 2013, 07:06 PM   #14
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Or you can make a combination for the tweeter, replace the 7 ohm for a 10 ohm and put a 10 ohm in parallel with the two tweeters. That is the best solution.
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Old 2nd April 2013, 07:07 PM   #15
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I simulate in my head.
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Old 2nd April 2013, 07:32 PM   #16
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If the inductor for the tweeter is an iron core you can upgrade to an air core later.
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Old 2nd April 2013, 08:43 PM   #17
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If you find the mid range from the tweeters too loud, try 1.5 uF rather than 2.2 uF.
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Old 3rd April 2013, 03:25 PM   #18
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Thanks strawberry, I will order some extra capacitors.
I's a pitty that the "simulation curves" are in your head, I cannot see them here so it's for me a great gess now what realy happens.
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Old 3rd April 2013, 04:30 PM   #19
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If you put the discarded capacitors, 3.9 and 6.8, in parallel, you get 11. You don't need to buy the 14 uF for the mid range. 11 will do.

When you order your 2 or 2.2 uF capacitors, order two 16 ohm resistors as well. One in parallel with each pair of parallel tweeters will attenuate well in case they are too loud with the 7 ohm resistor.

Last edited by strawberry; 3rd April 2013 at 04:49 PM.
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Old 3rd April 2013, 04:55 PM   #20
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Thanks!
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