Crossover Redo on my Amrita Audio Floorstanders

@danbro    try me on private message

Again, thank you everybody for contributing. And Timlub, I will certainly try to get the photos up on here very soon. I totally appreciate the offer. I have to figure out exactly how. I have a Galaxy phone and am not very slick on attaching pictures but I'll work on it. There are 3 separate "boards" containing multiple components that were inside the cabinet. Two were in the large woofer cavity and one was in the lower of the two midrange sub-enclosures. 

@ervikingo I don't know anything about Infinity crossovers. @erik_squires .

Thanks for your kind remarks.  

@carlsbad2 i love what you with your crossovers. I’ve thought about doing something similar on my IRS Beta. Like someone wrote Infinity crossovers are wonky!

I just finished a Klipsch Lascala and you always should keep the same value 

but partsyou need atleast$1kin pars minimum and get rid of the cheap gritty brass connectors  ,WBT Evo connectors from vh audio has sale on these and use their copper gold slide on terminals.

If you can send me a pic of your crossover,  we can then talk about what you wat to achieve and I can then give you advice on what to upgrade 

Thank you everybody so far. I appreciate the input and guidance.

I just redid the crossovers in my speakers.  I used the exact same values but upgraded all the components and added bypass caps to the mids and highs.  I also verified the resistances on the inductors as this can change the performance of the system.

My new components were so large that I decided not to shoehorn them all inside and moved my crossovers outside the speakers.  

I spent over $3000.  You can see photos of the completed crossover in my virtual system.

The improvement was huge and at the same time subtle.   Very refined. 

Jerry

I was going to say that DIYaudio is THE place to go for advice on this kind of question. Lots of builders there.

I would NOT do a rebuild without understanding the original state of the speakers. I’m not sure about this brand, but for instance, Infinity had such wonky crossovers and impedance curves that attempting to replicate the original is a bad idea.  Some Focals are the same.

Assuming the original crossover design is worth keeping, you’ll need a DATS or similar to make sure you compensate for any changes in ESR or DCR of replaced caps and coils.

Can you still read the values printed on the crossover parts?  Unless you can find a schematic, that's likely your best option.  If they're not legible, my educated "guess" is that the measurable crossover values should still be pretty close to original since they're in a passive circuit.  If you measure the parts from both speakers you'll double your sampling number....if the parts are very close to each other, I'd think that'd be a pretty good starting point. 

I'd opt for non-inductive wire wound resistors vs typical sand cast.  Air core inductors are preferable to iron core IMO.  Try to get the DC resistance of the inductors as close as possible to the originals....a few tenths of an ohm change shouldn't make much difference, but close is good....obviously you want the inductive value to be as close as possible.  Good quality caps should help too.  Sonicap, Clarity Cap, Mundorf, Solen...there are dozens to choose from, and all have their fans.  Caps in particular can take a while to burn in, so be patient.

It'd be a good time to replace any ferro fluid if the Vifa tweeters originally had it.

Might as well upgrade the connectors to pure copper, and the wire if there's not something good in there already.

Dunno if this will help, but I found a discussion of the Amrita Audio speakers at DIYAudio.com https://www.diyaudio.com/community/threads/crossovers-for-amrita-towers.291004/

Clarity cap CMR’s and Mills resistors or Path can be a nice option maybe start off on tweeter section. There are a lot of nice caps out there. just need to know if you like the Juniper or Vcap sound or what’s in between.
 

Do the best you can with your budget. Sometimes you can find used caps with your values needed, no break in needed most of the time. Those CMR’s took a long time to settle down.  I tried Sonic caps there were okay but I would try others.

A good quality copper internal wire is always nice. On one set of speakers I ran external crossover. Not sure it made a difference because never heard upgraded crossover inside the speaker.

Yes, Amrita wasn't a very known brand and I find very little discussion about them. Especially my model. 

It will be good to hear what more knowledgeable members advise. I have done it a few times in the past using better grade stuff with the same values. Also, don't forget to upgrade the internal wiring while you're in there. Parts Express will give you advice on what to use.

Amrita is a rare thing to see these days. I remember their adds when they were in business. Good Luck!