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Multi-Way Conventional loudspeakers with crossovers

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Old 15th October 2014, 01:57 PM   #1
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Default Active crossovers from eBay?

Anyone had experience with these active crossovers? To the untrained eye they look similar to some of the builds on this forum.

High Performance Line-level Active 2-way Crossover Filter OPA2134 DIY KIT | eBay

Any thoughts appreciated - thanks
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Old 15th October 2014, 02:57 PM   #2
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Would be nice if they provided a little more information - like is this an LR4 two-way for instance? Also 'High Performance' seems a bit rich when this is just a standard opamp inplementation with no attention to power supply cleanliness.

Later... I looked at the link to the PCB - too much hype for my taste, for example 'performance a vast improvement over nearly all passive crossovers'. They're using too many opamps to implement a 12dB/8ve XO, this can be done with one dual opamp (since ite PCB is mono).
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Old 15th October 2014, 02:58 PM   #3
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Not tried this product myself, but it looks good overall. Easier than perfboarding from scratch! I will bookmark it for myself, thanks...

His store lists both "12dB crossovers" and "Linkwitz-riley crossover" categories separately. Make sure you know which one you want. I would prefer LR12 for flat sum.

I'd rather use LM833 than his proposed 5532 or 2134, but I'd prefer Signetics 5532 over any 2134, but beware counterfeits.
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Old 15th October 2014, 03:17 PM   #4
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lorien... I have merged your two threads.
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Old 15th October 2014, 08:39 PM   #5
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Not seeing any trims or pots to adjust levels and crossover points.
A fairly basic requirement IMO.
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Old 15th October 2014, 09:02 PM   #6
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It's not sold as an adjustable feast, you determine co by resistor selection.

Maybe "maybe" a stepped potentiometer system could be fudged, but I'm only using this for my vinyl. I will have determined my ideal co with some mini dsp kit and a couple of amps.
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