I’m considering upgrading my speakers internal wiring

Leave them alone, as far as I know, he voiced the speaker using that wire, changing it probably will change the sound. 

Before going forward I’d ask Peter what wire he used internally. He’s usually very good with email.

I doubt that he used some cheap THHN. Some Neotrch OCC or Mundorf might give you a different sound but you’ll never know if it sounds better to you or not until you try. Personally I used solid core Neotech OCC in teflon for my speaker internal wiring and like it very much.

I do have a pair of Peter's Liberty Audio B2B-100 amps and I did change the binding posts on those to KLEI.

If you want to do it do it. 

Sounds like a great learning experience. Make sure you dont go cheap on tools, especially crimpers and connectors

Stay away from crimp connectors from parts express, they are universally garbage.

Why don't you call him up and ask if he thinks that is a good idea. 

You have fully broken them in and know exactly what they sound like? If not make sure you have at least 500 hours on them and many of those listening. Cardas is likely to sound a bit warmer... is that what you want?

Asking the designer for his thoughts seems prudent if it’s an option. There may be more to the internal wire than meets the eye.

Most speakers use fairly pedestrian internal wire, and normally I’m all for parts upgrades, but in this case, I’m not so sure. He used a lot of really good crossover parts. On the other hand, it is reversible if you don’t like it, so if you’re up to the cost and time, that’s all that’s really at stake.

When I open my Norh9 speakers I did not like the wire inside. I replaced the wire with siltech . The sound did improve . So my advise keep the original wire, in case it does not work . Also take a picture.

I replaced all my internal wiring with Duelund DCA oil cotton insulated wire in 10 awg for the bass drivers and 16 awg for everything else. I did this while I was upgrading the crossovers.

A dirty little secret is that almost evey speaker saves money on crossover components since they are inside and invisble. I’ve seen speakers that put their crossovers on the back under plexiglass to brag about how good their components were and they were merely mediocre. Most have plain old sand cast resistors like they used to sell in radioshack for 15c. This is a fertile ground for upgrade.

Those suggesting that you should call the OEM and ask should put yourself in the shoes of the OEM. Most will say it is not necessary as to say otherwise admits their product can be improved. Many will worry you’ll break something and then ask them to fix it since they approved the modification. YOu’ll almost always get a negative reply. which is good if you don’t really want to do it anyway

I got so many negative comments when I upgraded my crossovers that I think many people are just hoping crossover upgrades don't become a trend because then they will have to do it.

Jerry

Peter is a great guy and I have a very good relationship with him and respect his build quality and craftsmanship. This is not an insult or point to a flaw. Only my own OCD and thinking it has to enhance the sound quality but is not essential to a speaker builder. I’ll call him and get his opinion and I know his honesty will be true.

@bobbyloans I didn't mean any negative toward him.  But he is a businessman and has to answer like the owner of a business, not like your buddy over having beers.

None taken but I’m curious… did the upgrade of wire enhance the sound in a positive way. I can only speak from my own thoughts and say… if everything matters why would we stop directly before the actual speakers themselves and say that should not matter as much? It’s the final point of contact before our ears

Hey, it can't hurt to contact the OEM and just ask what is worth changing out or replacing internally. Especially if the speakers have some age on them.  Who knows, there maybe some parts that he will say "swap x out for y" because y is a better part that wasn't available when the speakers were made.

But if you do make changes, you will invalidate the warranty (if it is still valid) and if you ever send it back to be fixed, they may refuse to work on them.  And document everything you do, take pictures and keep the old parts.

These are not old. Less than 2 years. I’m not concerned about the warranty as there really is not anything to a speaker other than drivers and crossovers… This is basic and not so much as an experimental experience. lol 

I changed the wiring and the crossovers at the same time.  Noticalbe and excellent changes, but can't say what the impact of the wire was.

Warranty law:  Something breaks, they have to show that what you did caused the problem to deny the claim.  Now if you're clueless and can't argue your side, you'll lose.  but if you can condfidently say that the wire you installed was as good or better and that it was installed properly, you haven't invalidated the warranty.

Now if you put an unapproved racing oil filter on your car and the engine blows, that's not gonna be good.  but if you work on the door handle and the windshield wiper quits working, no relationship.

Jerry

Go for it, I've been modifying crossovers and internal wiring for many years. One speaker manufacturer incorporated my mods in future production runs. Changing out internal wire, caps, resistors, inductors in crossovers usually results in easily heard differences. Determining exactly what you want to accomplish prior to mods important, research replacement parts to help ensure the replacements meet your needs. I also use the Duelund wire in my present speakers.

What the? This regular ol' speaker retails for ~18k??

Well, for what the dude charged you, he better already have put the best wire on earth, best crossover components. best of everything.

Curiosity killed the cat...luckily they have 9 lives.

I'd say scratch that curiosity itch - audiophile fun and likely better than a lifetime of wondering.  Seems like you can go back to the original wiring if desired.

Many years ago I re-wired a pair of speakers with what I thought was better wire. I loved those speakers, but after re-wiring them they sounded sufficiently different that I was never happy with them and I ended up selling them. Not only did they sound worse, I was constantly second guessing whether this was the way they were intended to sound. I have always regretted what I did to those speakers and wish I still had them in their original form.

You say:

I have a beautiful pair for PBN M1!5 in a Black finish which I love and sound incredible.

If you love them and they sound incredible, why on earth would you want to modify them? It is hard enough in this endless obsessive pursuit that we all subject ourselves to, to find something we love. In that rare moment when you do, try not to kill it. Even if you succeed in making it sound "better", it will still sound different, and that itself will be enough to drive you crazy. If you have an itch to scratch, buy some exotic power cable but please leave the speakers alone.

Thanks for all the input. I’m still on the fence. Also the fact that they sound great nor… upgrading the final 2 feet to the speakers themselves should Improve the sound further. 
Kenny I did not pay 18k for these. Reach out to Peter himself and get pricing. They’re worth every penny 

You’ve gotten great advice.  I’d call and talk to Peter, in this hobby owners / builders, designers will often give candid, great advice on their products.  Not across the board but more often than in most industries.  If you have that itch, you will always want to scratch it, if you keep the old wire, take pictures, you can always reinstall the original wire if you don’t like the upgrade.  

The downsides are if Peter voiced the speaker not off of what the components cost but what sounded the best with his design and synergy with the other components, design, I wouldn’t mess around with trying to make the speakers “better”.  Peter, if he’s honest can point you in the right direction.