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Multi-Way Conventional loudspeakers with crossovers

Crossover in a very limited space...
Crossover in a very limited space...
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Old 15th March 2018, 07:44 PM   #11
00940 is online now 00940  Belgium
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I'm a bit uneasy discussing the crossover first because it is a kit and second because I'm really a complete newbie at crossovers.

A quick sim shows that the filter drops the level by 5 to 6db over most of the passband.

Btw, that little driver is really heavy
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Old 15th March 2018, 07:53 PM   #12
ICG is offline ICG  Germany
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Originally Posted by andy2 View Post
Just a side note, does any know what's the typical volume in liter of the xover for a 2way monitor?
That depends pretty much on the monitor. Most are below 0,1l, so absolutely neglectable.
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Old 15th March 2018, 07:58 PM   #13
Lojzek is offline Lojzek  Croatia
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I think I know now what's wrong with it. In the product pdf of micro speaker the impedance graph shows the lowest Z at about 7 ohms and that can only be with an 8 ohm driver, although the data for the driver says it's Peerless SLS 85 S25 CP04-4, which is probably a typo, as it should have been written CP04-08. Then sensitivity and impedance do match up for the 8 ohm unit.


edit: I am not interested in you disclosing the filter parts values, I would not have any use of it. My curiosity is whether a driver being used in this kit is a 4 or an 8 ohm version, which you can check easily. Thank you!
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Old 15th March 2018, 08:21 PM   #14
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It really comes with a 4 ohms driver. I'm pretty sure it was discussed somewhere on hifi-forum.de but I can't find the thread anymore.
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Old 15th March 2018, 08:54 PM   #15
Lojzek is offline Lojzek  Croatia
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Then the dcr of the inductors must have contributed to the increased impedance profile and lowered the sensitivity.
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Old 17th March 2018, 09:14 AM   #16
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There's indeed about 1R3 worth of dcr in line with the woofer. It's a sealed GHP design btw (Subwooferabstimmung mit Kondensator und Widerstand).

It's coming along nicely. I've got the feeling that the smaller the speaker, the harder it is to build. There's really no room for tolerance.
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Old 16th April 2018, 05:19 PM   #17
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It's slowly coming together. Veneering is done, the crossover section for the tweeter is installed (inside the main box). I still have to install the crossover section for the wooder (inside the black support) and wire the drivers.

I'll then be able to quickly test everything before gluing the front plates and put some tung oil on the veneer.

I'm really amazed that they suggest to fit everything inside the speaker... that'd be quite a feat.
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Old 16th April 2018, 05:27 PM   #18
adason is offline adason  United States
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you need thicker cables...
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Old 16th April 2018, 06:07 PM   #19
eriksquires is offline eriksquires  United States
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Very nice!

You might want to use Mills in the future, as they are very good, and very small for the wattage.

Best,

E
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Old 24th April 2018, 02:00 PM   #20
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Getting there...Awaiting final coating.
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