Problem Solvers Needed-Got my New XOs installed and am worried....


I think I made a big mistake. I loved the sound of my 1988 Tannoy FSM Dual concentric 15'
speakers. So I thought an expert could analyze the existing XOs and make improvements.
I installed the new XOs expecting a 300-400 hour burn in period. Herein lies the problem.

After 30 hours or so the initial sound has no high end to it. I expected to initially hear sound as good as I had
which would continue to improve as the burn in continued. But no. 

I am tempted to reinstall the old XO and kiss off the $2k invested. 

I am very open to some suggestions from anyone who has been down this road.

Thanks,
chorus
Post removed 
I had not dreamt I would receive this much great advice.
Thanks to all who took time to contribute!

Some more detail:
The existing system was measured and found to have wide impedance drops-to as low as 1- with frequency responses that were
a long way from straight lines.
Most of the existing XO parts were from about 1988.

The coils were puny. 

The original system included multiple db settings in 3 areas
of treble. 

You could also run it as a 3-way or a 2 1/2 way. 

On the computer screen the new system- which eliminates
all the old tonal adjustment options- was way simpler and produced
straighter frequency responses.

The new XO also eliminated the option to bi or try wire the cables.

The new XO came in the form of a bag of parts and a wiring diagram of the three speakers. 

I took these to a guy who truly knows how to assemble things- PHD & former professor who personally assembled 4 Pass DIY amp & pre kits during Covid last year. 

I was only left to wire the color coded XOs to the speakers.
Perhaps I messed up something but I do not think I did.

I will try to determine if the tweeters are in fact working or not.
As I listen I really do not hear anything in the higher range at all.
This is what has me most worried.

I was warned that 400-500 hrs of burn in are needed and I am nowhere
near that. 

I have not consulted the fellow who made the new XOs yet for his advice. Thought I would start with you all. 

I will advise more as it develops.

I'd stop and make sure I was hooked up right. Now that you've explained what you did. STOP!!! DON'T keep playing I wouldn't want to hurt those drivers.. 

I don't modify XOs other than the occasional make up cap (by pass is the wrong name) addition. My fear there was a resistor left on a HF driver or that its just wired wrong.. I don't bypass LPads and surely don't go from a tri/bi amp wiring set up to a single amp set up.. WAY to many things were changed..

The LPad removal had to have a little resistor for volume put in place? Wrong value or not hook up when bypassed.. It's in series right? Not a parallel XO..

 Again Tannoy are not that far off, they sound to good.. Am I missing something?

Less than 1 ohm? You'd be burning up amps. Thing aren't tracking.. for UNDER 1 ohm much less a 2 ohm load.. What kind of amp are you running? :-)

Regards
I may have mis-explained. There were no L-pads before. Just optional db treble settings. Like 0/+3/-3.
After a few hours of listening I rolled the big boys into the other room for storage until I had a direction on what to do. 
My amp is a Pass INT 25. 
I can send you the before and after graphs if that helps. Not familiar with how to PM people on this forum though.
I will disassemble one and try some tests.

The two XOs in both speakers are easily removed and shipped.
As you say I would have preferred to have maintained the all the original functionality.

If you have any suggestions of who to hire to fix this F-up on my part
I am listening. 

Thanks