Modifying Crossovers

Another explanation is that some people have an insatiable urge to "customize" their gear. This makes it unique to them. 

To get a crossover with high end components you'll have to spend $100k or more.  I am currently building new external crossovers for my speakers.  I spent $2300 on caps, resistors, and inductors.   Here is a photo of the final layout completed just last night.

https://photos.app.goo.gl/5maaKbDKvpNdjGja9

There is no way I would mess with factory Crossover of New Speaker, UNLESS many people documented the OEM made a mistake and problems resulted. 

The crossover looks like simple design nice quality to me

https://audiogroupdenmark.com/product/boerresen-x3/

OLD Speakers, I would have my friend check the crossover for out of spec parts, replace them with the idea or restoring 'original', not 'let's upgrade them".

He has two pairs of JSE Model IIs. restored one pair's few out of spec parts. 'Upgraded the heck out of the other pair. We both prefer the simply restored pair to the upgraded pair.

It's very hard to deny the bias of it's better right! he's like me: not necessarily so.

Vintage parts might have been +/- 5%; newer ones, same values are probably tighter specs, say +/- 2%, not going to improve the sound, just typical modern production.

@falmgren ,

I would be highly suspect of anyone who thinks they know more than the speaker designer. If they know so much, why haven't they designed their own speaker.

My 2 cents...

Bob

Well, if you know what you have and what you want.

For isntance, Focals have good components, but I like Mundorf MKP's better than the Solens they use in the mid to low end models.

Wharferdale speakers can sound really really good with some better tweeter caps.