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Multi-Way Conventional loudspeakers with crossovers

New crossover for my current speakers
New crossover for my current speakers
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Old 13th July 2018, 09:16 PM   #91
Rullknufs is offline Rullknufs  Sweden
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New crossover for my current speakers
I have been thinking about maybe going active but it feels like a lot of work. The opendrc-di does not work for active speaker setups. For that I would have to go to a much more expensive dsp option or go with an analog minidsp and that's not something I want to do (I want to do as few analog/digital conversions as possible. I have a really competent two channel amp now that I got as a real bargain a couple of months ago (S.A.T Amplifix, basically the same as Primare/Bladelius). Having a passive crossover would make things a lot easier and less complicated. Money isn't really an issue, I have a well paid job and live pretty frugal but I just want to be sure that I spend my money well.
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Old 15th July 2018, 01:19 PM   #92
EarlK is offline EarlK  Canada
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Niklas,

I looked at your recent shopping list and disagree with some of the choices.

ie; IMO, money can be saved in some areas and then better spent in others.

I'll publish my choices later today.

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Old 15th July 2018, 03:38 PM   #93
EarlK is offline EarlK  Canada
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Here's how I would spend your money on crossover parts.

Click the image to open in full size.

Some of the parts are much better ( IMHO ) while others ( like the BiPolar electrolytics ) aren't .

The Bipolars are mostly cascaded ( bypassed ) with MKP types ( & where it matters a Mundorf Supreme in the HF circuit ).

On balance, I feel this will give you better performance.



PS: you'll need to do your homework on whether or not this is a good company to deal with.
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Old 15th July 2018, 10:56 PM   #94
EarlK is offline EarlK  Canada
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Hi Niklas,

I've made a couple of changes ( nothing major that impact the above parts list ).

I tweaked the design to make C2 smaller ( note: C2 is now in the HiPass circuit ).

The notch filter ( comprising R3 + C5 ) is no longer needed ( but might be in the future if you ever fix your 5K diffraction suckout ) .

New crossover for my current speakers-morel-mtm-16-51mm-png

I've also included the XSim file for this version ( in case you or anyone else wants to play with it ).



PS: I could tighten up the phase tracking > but then I'd have to consider not using your existing LC components.
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Old 16th July 2018, 12:14 PM   #95
Rullknufs is offline Rullknufs  Sweden
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New crossover for my current speakers
Thank you, Earl! So I should skip buying parts for R3+C5? Also, how does reducing C2 from 25 to 14.7uF affect the sound/XO point? And why the drastic reduction (only 60% of the previous value).
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Old 16th July 2018, 12:40 PM   #96
Pano is offline Pano  United States
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New crossover for my current speakers
Please help keep your forum clean. Do not quote the entire post just above yours. (see the Rules). Over quoting has been removed. Thank you.
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Old 16th July 2018, 02:45 PM   #97
EarlK is offline EarlK  Canada
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Quote:
Originally Posted by Rullknufs View Post
Thank you, Earl! So I should skip buying parts for R3+C5? Also, how does reducing C2 from 25 to 14.7uF affect the sound/XO point? And why the drastic reduction (only 60% of the previous value).

Buy the 4 parts needed for ( R3 + C5 ) x2 . They are only 5.56 euro total. You might need them later.

C2 can be changed back to the 24.7uF value by paralleling a 10uF biPolar cap ( already in the shopping list ) to the existing 14.7uF film caps ( which is a 2 cap combo consisting of a 10uF MKP film + 4.7uF Supreme film paralleled together ).

- Then you can tell me if you hear a difference! ( for a 15uF or 25uF cap in that position ).

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Old 16th July 2018, 03:16 PM   #98
Rullknufs is offline Rullknufs  Sweden
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New crossover for my current speakers
Alright, thank you! What is the 8.2ohm resistor meant for? I can't see it in the schematic.
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Old 16th July 2018, 04:19 PM   #99
EarlK is offline EarlK  Canada
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Quote:
Originally Posted by Rullknufs View Post
Alright, thank you! What is the 8.2ohm resistor meant for? I can't see it in the schematic.
That's one possible value for R3 ( ie; not used at this time ).

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