HELP FedEx Mangles Speakers - Refuses Claim

No to original boxes. Shipped double boxed with lots of pads and wrap and foam and care.
Yes to insured - $3k per box.
Denied claim due to inadequate packing. And yes to fedex ground...Slik, what's your point? Have something to help or just want to be an I-told-you-so after the fact?

Regarding the shipper - technically I used my FedEx online account linked to my credit card to pay for and generate the ground shipping labels. I emailed those printable labels to the individual shipper in NY. This is how I was able to file the claim and be in the driver's seat to deal with the damage claim issues firsthand.

FedEx pickup up the double boxes at a residence and did not open or otherwise inspect the inside packing.

Thanks for responses thus far.
The packing consists of:
Inner box, speakers plastic wrapped and bubble wrapped with hard cardboard attached to the top, bottom and driver side, the inner box filled with foam to the brim and taped up.
That box is then double bubble wrapped on the outside then, the box is inserted into the 2nd box with 4 inch commercial foam slabs top and bottom - cut to snug up inside the 2nd box, sides are filled with foam peanuts for another barrier on the sides.

From all experience and knowledge here is sounds as if I am up against a challenge regardless, based on the fine-print and claim denial policies. I too have been burned by UPS but never by FedEx ground until now.
I am in CA if that has anything to do with the legal recourse. Keep the information flowing, please and thank you everyone.

Thank you.
I will definitely update the post or start a new one referencing this so that all of you helpful people can see how it turns out.

I got very busy with work and this was sidelined but I did get back on the case.
So it has been a month I think since I escalated the denial of my damage claims to their claims department. I spoke with a contact at the corporate level and explained the whole long story, sent all of the damage and packaging pics again. I let her know this IS going to court if not resolved at this level.

It took a month, 2 calls every week to follow up. She said everything she saw lead to paying on the damage claim and that her upper Mgnt follow a standard that this claim met.

She told me they would send a truck to pick up the boxes/speakers and analyze. The truck came, speakers and all boxes went to them. The driver left me with a little numbered tag for my receipt. She then told me the check would go out that Friday the 26th. Nothing arrived by the next Friday, calls everyday to them directly were unanswered. Finally someone called me back and said the claim payment was set to hold for some reason.

I kept calling every 3-4 days leaving voicemails for anyone and everyone.
After then there were 2 confirmations that the check went out but weeks went by with nothing.

I kept calling, escalated to people's voicemails.

The check arrived on Saturday, finally. So they paid out in full (amount that I insured for) and reimbursed for the shipping fees, took the speakers. When they pay in full the item becomes their property per their claim policy. I don't know what they will do with them.

Thanks to all for your helpful direction and advice through all of this.

Thanks for great and thorough advice and steps to ensure protection and prevent loss. I was the buyer and the shipper in this deal. I used my FedEx online login and my linked credit card to schedule and execute shipping to myself so that if anything went down, I would be in the driver's seat to push a claim through. I have been burned by UPS damage and a unhelpful, poor packing seller previously.

FedEx tried to brush me off - stating I was the recipient and had no rights but when I informed them to dig deeper the dismissive claim person on the phone went pretty quiet (still sent me a denial letter afterwards). I worked with the seller at length to pack these and am positive the packing was above factory standards. Pictures were taken at every step of the process to prove packing materials used and protection against damage. Also, I took about 50 as I was unpacking them to reveal the mauling or all corners.