Why don't speaker mfg list amps and associated equip they use to " voice " their sound?


Hello to all...

Question self explanatory - why or why not?

Can't always count on them using the equipment they use at trade shows... And can't be sure store/rep would be involved with the electronics company...

Would/could be useful and informative if the person interested in speakers is interested in new equipment as well.

Thoughts
insearchofprat
It would make it seem that their loudspeakers are "limited" to specific electronics.  As such, it would negatively impact their sales.
Alternate question: why don't more speaker mfg "make/have made" their own electronics like Emerald Physic can/does?
onhwy61

Possibly but I doubt it: the audiophile never (almost never) should trust anything but his own ears.

Some purchasing "starts" with a change in speakers, keeping existing electronics - no reason for mfg NOT TO PUBLISH test equipment, in the same vein that testing for promotion (the true reason for equipment reviews) ALWAYS LISTS equipment used...
When your goal is to sell stuff it makes no sense to specify constraints.   
Agree with onhwy61, it would cause some users of electronics different from those used to voice the speakers to dismiss those speakers without hearing them.
Vandersteen, Audio Note, ATC, several *do* make amp components.

For many reasons (including envy from all the other manufacturers) it would be a PR nightmare for, say, Focal or B&W or Wilson to name names.
Why stop there? Why not have them list all the cones and footers and shelves, room dimensions and acoustic treatments, speaker locations and listening positions, on a spreadsheet showing day to day so we know exactly what was the setup when each capacitor and wire and screw and grill was tested? Don't we need to know these things? What design software was used and with what settings? What microphone and who did those response measurements anyway? 

Probably the whole thing should be on video, to go along with the 50 thousand pages of equipment setup notifications. 

Or we could just listen and see how they sound.

Hmmmm, dunno. Tough call.
Plenty of speaker cos. have branched into amps - Quad to Sanders.
Not so much vice versa - PS Audio
This is where "expert" advice (magazine, internet reviews, dealer advice, etc.) and 30 day trials come in.  I agree, though, that suggestions or recommendations from a manufacturer concerning match-ups would be worth considering.  The recommendation wouldn't necessarily be exclusionary, either.  The manufacturer could easily hedge their bet by saying that any quality component would be fine, but that Blah-Blah-Blah components would be exceptionally wonderful.
It could be limiting and it also means you are endorsing another brand that you may or may not have a relationship with.  

I do offer guidance and examples of brands that work well with my speakers.  Obviously I am going to be biased towards brands I carry but it does help with inference.  The unfortunate part though is that it is reflective of my taste. Looking at many systems out there, lots of people like extremely bright setups so I may be doing myself and injustice.  
I’m sure a lot of manufacturers use more than one set of electronics to evaluate their speakers. That being said, they could be more honest about their speakers
specs. They never give exact numbers  regarding impedance. Also, I’ve never seen a spec regarding phase angle. Impedance and phase angle are so important in determining what amp will work best with a given speaker. 
I've seen a few that suggest a good match. GR does. The old VMPS did Brian C. really liked the way Ampzilla preformed with his speakers at show.  I've seen a FEW systems at shows that were matched very well.
Rare, but I've seen it..

When the speaker guy says "this is the one", man oh man, that could tick someone off, ay? What about the unknown? Can't have checked them all right?

Regards
The entire  area of thought is making me think of "the Jetsons".

Where Judy Jetson, the daughter, is upset and nearly crying. She's upset, as she says, "Why do I always have to do the dishes?!"

She stands in the futuristic kitchen, and presses a red button on the wall. Which causes the futuristic hardware to 'do the dishes'.

The lesson, one angle on the package of lessons there, is..: Humans complain regardless.

About everything.