Using an iPad to follow a YouTube DIY without Internet to re

[Ragnusen Ultred]

Am Mon, 16 Apr 2018 09:25:29 -0700 (PDT), schrieb trader_4:

Yet in the other thread, you're worried about how far a clay pipe can
go unsupported. Many would consider that simple. And finding a "clip"
when it comes to removing a speaker isn't what it's all about. Most
times you can't see a clip or anything from the start. We had a thread
here a month ago where a guy was having difficulty removing a speaker
even after a lot of trial and error. Many times, what you think is
obvious, just ain't so. But like I said, feel free to screw around,
wander in the wilderness and eschew easily available free video resources
that make jobs easy.

It's clear that you, trader_4, understand that of the fifty or so bolts and
clips that had to come out, not a single one was visible, where it's not
always obvious how many there are or in which order to remove the dozen or
so pieces of trim and lights and grills and decks and molding and belts and
cushions, etc., that had to be removed in order to just *expose* the
speaker bolts in this kid's vehicle.

Obviously, once the speakers were exposed, the wiring was trivial, which,
even James Wilkinson Sword must note, I didn't say I had any problem with
the physical part of wiring the speakers.

BTW, to add value here, the *great* thing about the physical wiring was
that the positive and negative was so obvious in so many ways that you
couldn't possibly make a mistake.
a. The harness wires were color coded with a red stripe
b. The speaker wires were also color coded with a red stripe
c. The speakers themselves had different sized connectors
d. The harness connection itself only clipped in one way
e. The speakers had a plus and minus symbol

So, the wiring was really easy. I used wire nuts to connect to the harness
connector so that the speakers could be swapped out more easily in the
future.

Routing the wires was also easy as there were pre-fashioned clips and
curved troughs in the back deck, which routed the wires behind the seats to
the hidden harness connectors (none of which was covered in the video but
they were all easy to find since you just follow the wires).

The speaker cutout even had a "well indentation" to get the wires from
underneath (in the trunk) to topside (to connect to the hidden harness clip
behind the back of the seats).

So, as trader_4 astutely noted, the wiring wasn't ever the problem. The
advantage of the video was simply to know where the fifty odd hidden
connections were in the dozen odd upholstery and trim panels that had to be
removed.

Plus, it kept the kid busy whose car it was.

 

[Peeler]

On Mon, 16 Apr 2018 16:27:49 +0000 (UTC), Ragnusen Ultred, another
troll-feeding moron, blabbered:

<FLUSH another load of idiotic troll fodder>

 

On Monday, 16 April 2018 18:04:02 UTC+1, Jeff Liebermann wrote:

On Mon, 16 Apr 2018 02:22:08 -0700 (PDT), tabbypurr wrote:

I'm pretty sure if you put 450W through one of those speaker's it'd glow dull red.
NT

Not a problem if you use maximum momentary peak pulse dynamic
percussive music power or something like that. Need bigger numbers?
Just change the test method.

https://en.wikipedia.org/wiki/Audio_power
"Thus, the ideal 100-watt audio system would need to be
capable of handling brief peaks of 10,000 watts in order
to avoid clipping".

I've just come up with a new way to get boastier specs. Diss the power through the frame not the coil, and accept some charring.


NT

 

[Ragnusen Ultred]

Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be horrified.

Makes sense.
Do you think that could damage the speakers?

 

[James Wilkinson Sword]

On Mon, 16 Apr 2018 21:34:47 +0100, Ragnusen Ultred <rragnusen@ultred.com> wrote:

Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be horrified.

Makes sense.
Do you think that could damage the speakers?

No, it doesn't. It might make the music sound odd if you're very very very very good at hearing, or you have OCD, otherwise it may just reduce the volume slightly. Unless you have the speakers positioned perfectly and are sitting in a precise position, then the delay of the speed of sound will cause more problems anyway.

--
Why is bra singular and panties plural?

 

[Clifford Heath]

On 17/04/18 06:34, Ragnusen Ultred wrote:

Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be horrified.

Makes sense.
Do you think that could damage the speakers?

If two stereo speakers are out of phase,
they tend to cancel out low frequencies.
You get no bass. The cutoff frequency
depends on how far apart the speakers are.
If they're less than half a wavelength
you get significant cancellation.

Try this: wire two speakers this way,
set your amp to mono, and place the
speakers directly face-to-face. Most
of the sound gets cancelled.

 

[James Wilkinson Sword]

On Tue, 17 Apr 2018 00:24:14 +0100, Clifford Heath <no.spam@please.net> wrote:

On 17/04/18 06:34, Ragnusen Ultred wrote:
Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be horrified.

Makes sense.
Do you think that could damage the speakers?

If two stereo speakers are out of phase,
they tend to cancel out low frequencies.
You get no bass. The cutoff frequency
depends on how far apart the speakers are.
If they're less than half a wavelength
you get significant cancellation.

Try this: wire two speakers this way,
set your amp to mono, and place the
speakers directly face-to-face. Most
of the sound gets cancelled.

Am I being stupid or shouldn't ALL the sound get cancelled at ANY frequency if you're sat midway between them? Imagine you're sat in your living room and have one speaker 3 metres in front of you and 1 metre to the left, and the other 3 metres in front of you and 1 metre to the right. All sounds come out of the two speakers 180 degrees out of phase. Since the distance from the left speaker and the right speaker to your head is identical, the sounds will still be 180 degrees out of phase when they reach you.

Since this doesn't happen I can only assume that either:
1) you hear the two out of phase sounds with different ears and your brain allows for this.
2) reflections off the walls mean you can always hear the sound anyway.

I've often connected speakers both ways round and never been able to tell one was quieter than the other.

If you were in one of those weird silent rooms (anechoic?) then you might not hear anything if you wired them up wrong. I saw a TV program once where you couldn't hear someone speaking if they faced the other way, as the sound from their mouth didn't bounce off anything. I guess the same would happen if you were floating in mid air, like er.... space, but with air.

Anyway, it doesn't matter, you get precisely the same sound whichever way you wire them up, I guess something just bounces.

--
"Whoever said the pen is mightier than the sword obviously never encountered automatic weapons."
- General MacArthur

 

[James Wilkinson Sword]

On Mon, 16 Apr 2018 18:42:50 +0100, Ragnusen Ultred <rragnusen@ultred.com> wrote:

Am Mon, 16 Apr 2018 09:25:29 -0700 (PDT), schrieb trader_4:

Yet in the other thread, you're worried about how far a clay pipe can
go unsupported. Many would consider that simple. And finding a "clip"
when it comes to removing a speaker isn't what it's all about. Most
times you can't see a clip or anything from the start. We had a thread
here a month ago where a guy was having difficulty removing a speaker
even after a lot of trial and error. Many times, what you think is
obvious, just ain't so. But like I said, feel free to screw around,
wander in the wilderness and eschew easily available free video resources
that make jobs easy.

It's clear that you, trader_4, understand that of the fifty or so bolts and
clips that had to come out, not a single one was visible, where it's not
always obvious how many there are or in which order to remove the dozen or
so pieces of trim and lights and grills and decks and molding and belts and
cushions, etc., that had to be removed in order to just *expose* the
speaker bolts in this kid's vehicle.

Obviously, once the speakers were exposed, the wiring was trivial, which,
even James Wilkinson Sword must note, I didn't say I had any problem with
the physical part of wiring the speakers.

BTW, to add value here, the *great* thing about the physical wiring was
that the positive and negative was so obvious in so many ways that you
couldn't possibly make a mistake.
a. The harness wires were color coded with a red stripe
b. The speaker wires were also color coded with a red stripe
c. The speakers themselves had different sized connectors
d. The harness connection itself only clipped in one way
e. The speakers had a plus and minus symbol

Or you just try one then the other and see which is loudest.

--
Bad command or file name! Go stand in the corner.

 

[Clifford Heath]

On 17/04/18 10:26, James Wilkinson Sword wrote:

On Tue, 17 Apr 2018 00:24:14 +0100, Clifford Heath <no.spam@please.net
wrote:

On 17/04/18 06:34, Ragnusen Ultred wrote:
Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be  horrified.

Makes sense.
Do you think that could damage the speakers?

If two stereo speakers are out of phase,
they tend to cancel out low frequencies.
You get no bass. The cutoff frequency
depends on how far apart the speakers are.
If they're less than half a wavelength
you get significant cancellation.

Try this: wire two speakers this way,
set your amp to mono, and place the
speakers directly face-to-face. Most
of the sound gets cancelled.

Am I being stupid or shouldn't ALL the sound get cancelled at ANY
frequency if you're sat midway between them?  Imagine you're sat in your
living room and have one speaker 3 metres in front of you and 1 metre to
the left, and the other 3 metres in front of you and 1 metre to the
right.  All sounds come out of the two speakers 180 degrees out of
phase.  Since the distance from the left speaker and the right speaker
to your head is identical, the sounds will still be 180 degrees out of
phase when they reach you.

Since this doesn't happen I can only assume that either:
1) you hear the two out of phase sounds with different ears and your
brain allows for this.
2) reflections off the walls mean you can always hear the sound anyway.

I've often connected speakers both ways round and never been able to
tell one was quieter than the other.

If you were in one of those weird silent rooms (anechoic?) then you
might not hear anything if you wired them up wrong.  I saw a TV program
once where you couldn't hear someone speaking if they faced the other
way, as the sound from their mouth didn't bounce off anything.  I guess
the same would happen if you were floating in mid air, like er....
space, but with air.

Anyway, it doesn't matter, you get precisely the same sound whichever
way you wire them up, I guess something just bounces.

Most of the sound you hear in any room is actually reflections.
Like 70%. So in your setup, you might get cancellation of the
direct sound, but that's only part of what you hear - and the
rest takes various paths that don't cancel.

 

[Jeff Liebermann]

On Mon, 16 Apr 2018 11:57:15 -0700 (PDT), tabbypurr@gmail.com wrote:

On Monday, 16 April 2018 18:04:02 UTC+1, Jeff Liebermann wrote:
On Mon, 16 Apr 2018 02:22:08 -0700 (PDT), tabbypurr wrote:

I'm pretty sure if you put 450W through one of those speaker's it'd glow dull red.
NT

Not a problem if you use maximum momentary peak pulse dynamic
percussive music power or something like that. Need bigger numbers?
Just change the test method.

https://en.wikipedia.org/wiki/Audio_power
"Thus, the ideal 100-watt audio system would need to be
capable of handling brief peaks of 10,000 watts in order
to avoid clipping".

I've just come up with a new way to get boastier specs. Diss the
power through the frame not the coil, and accept some charring.
NT

Dull red is about 650C (1200F). Might be a bit hard on the driver
transistors, upholstery and insurance policy.

I like these speakers from the bad olde daze when cars only came with
one speaker cutout in the dash:
<https://www.retromanufacturing.com/blogs/news/dual-voice-coil-speakers>
The fun part was driving each coil 180 degrees otto phase and watching
the speaker cone tear.

Anything worth doing, is worth overdoing. Maybe one of these speakers
would be more interesting:
"10 BIGGEST/LOUDEST Speakers"
<https://www.youtube.com/watch?v=8_7xa-jiLNE> (6:25)
In the distant past, I worked on a compressed air battlefield
propaganda very loudspeaker. Something like a modern version of one
of these:
<http://www.douglas-self.com/MUSEUM/COMMS/auxetophone/auxetoph.htm>
Pretend I didn't mention this as it might topic shift the "discussion"
beyond the tipping point of no recovery. More:
<https://www.psaudio.com/article/the-mother-of-all-speakers-moas/>





--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

"Not a problem if you use maximum momentary peak pulse dynamic
percussive music power or something like that. "

Or PiPILS - Peak Instantaneous Power If Lightning Strikes.

>""Thus, the ideal 100-watt audio system would need to be
capable of handling brief peaks of 10,000 watts in order
to avoid clipping". "

Actually not so brief in the case of a muted trumpet. However that still would require head voltage of what ? Maybe 3,163 times the normal rails ? (I am NOT figuring that out)

Even at that, if normal music was not compressed it would never fit within the dynamic range of anything.

 

>"Also remember that I have a lady watching over my shoulder who was the mom of the girl who was her daughter, helping me, who owned the car ..."

$ 45/hour
$ 75/hour if you took it apart
$ 90/hour if you advise
$ 500/hour if you watch

Actually you can watch as long as you don't want to.

 

>"But what happens if you do cross the wires? (Just curious.) "

If you get one of the pair reversed it sounds like shit because it cancels the bass out. It also can be described as the sound "going through your head".

 

[Peeler]

On Tue, 17 Apr 2018 11:11:23 +1000, Clifford Heath, another mentally
challenged troll-feeding idiot, blathered:

Most of the sound you hear in any room is actually reflections.

Somewhat like you troll-feeding idiots are reflecting the Scottish wanker's
idiocy?

 

[James Wilkinson Sword]

On Mon, 16 Apr 2018 18:30:48 +0100, Ragnusen Ultred <rragnusen@ultred.com> wrote:

Am Mon, 16 Apr 2018 07:31:55 -0700 (PDT), schrieb trader_4:

I'd just watch the video on a PC in my house, then go out and work on the
car and if necessary come back and watch again. It's putting in a speaker,
not rebuilding the engine. If I wanted to do it right at the car, I'd
use my smartphone on the cell network.

Well, that works but remember, it's not my car, so I'm completely
unfamiliar with everything about the car.

Also remember that I have a lady watching over my shoulder who was the mom
of the girl who was her daughter, helping me, who owned the car ... where
you know, as I know, that breaking things like those dastardly clips gets
those kinds of people upset.

I once attempted to sell a car to someone with OCD. I'd advertised it as being in perfect condition, and it was for any normal person. But ONE of the ten clips that held the rear bumper on was broken (I hadn't even noticed, the bumper was about 2mm too low on one end). He grumbled about it for ages, then decided he'd have to replace the entire bumper because of this. Then he asked me what colour the car was. I managed to prevent myself from laughing, then said "red". He glared at me and wanted the precise tone of red so he could get the new bumper to match. I told him to go away and sold it to a normal person.

Us? We break those clips all the time ... and we remove more parts than
necessary all the time, and we remove fewer than needed all the time, and
we take off parts out of order all the time, etc., where I didn't have the
luxury of experimenting while working on this neighbor's car.

To me a car is a machine. If it works, it works, who cares if something is hanging off? Well the police do, but you can normally avoid those fuckers.

Besides, I could have written it all down, but really, it's just speakers
(as you said) and there were only about fifty or so connectors to unclip or
unscrew, so, that's not all that much to remember (or write down), but why
bother.

Funny, whenever I've fitted speakers (and I've put quite a few silly large stereos in my cars) I've never encountered more than about 5 clips per speaker. Just remove one plastic panel and unscrew the speaker from underneath.

I put the kid to good use by having her hold the iPad tablet, and she would
read out the next step and I would do it while she paused it.

That worked out perfectly - but they don't have a router (reminder for me
to buy them a new router as they only use desktops or cellular).

If they use cellular, why couldn't you play it live off Youtube using the cell network?

In my case, this use model was perfect:\
a. Mom watched over everything like a hawk (but she did bring refreshments!)
b. Daughter held iPad and told me what step to do next (this kept her busy).
c. I removed the fifty or so bolts and clips & installed the speakers.

When it came time to drill into the rear panel, I sent the mom and daughter
inside asking for them to make more food!

(They would have screamed had they seen me drilling the holes.)

--
If girls had apostrophes instead of periods, they'd be even more possessive and prone to contractions.

 

[James Wilkinson Sword]

On Tue, 17 Apr 2018 02:11:23 +0100, Clifford Heath <no.spam@please.net> wrote:

On 17/04/18 10:26, James Wilkinson Sword wrote:
On Tue, 17 Apr 2018 00:24:14 +0100, Clifford Heath <no.spam@please.net
wrote:

On 17/04/18 06:34, Ragnusen Ultred wrote:
Am Mon, 16 Apr 2018 13:20:55 -0700 (PDT), schrieb seagirt555@gmail.com:

Then they are out of phase and as one cone is moving out,
the other is moving in. How noticeable it is, idk,
but audiophiles would be horrified.

Makes sense.
Do you think that could damage the speakers?

If two stereo speakers are out of phase,
they tend to cancel out low frequencies.
You get no bass. The cutoff frequency
depends on how far apart the speakers are.
If they're less than half a wavelength
you get significant cancellation.

Try this: wire two speakers this way,
set your amp to mono, and place the
speakers directly face-to-face. Most
of the sound gets cancelled.

Am I being stupid or shouldn't ALL the sound get cancelled at ANY
frequency if you're sat midway between them? Imagine you're sat in your
living room and have one speaker 3 metres in front of you and 1 metre to
the left, and the other 3 metres in front of you and 1 metre to the
right. All sounds come out of the two speakers 180 degrees out of
phase. Since the distance from the left speaker and the right speaker
to your head is identical, the sounds will still be 180 degrees out of
phase when they reach you.

Since this doesn't happen I can only assume that either:
1) you hear the two out of phase sounds with different ears and your
brain allows for this.
2) reflections off the walls mean you can always hear the sound anyway.

I've often connected speakers both ways round and never been able to
tell one was quieter than the other.

If you were in one of those weird silent rooms (anechoic?) then you
might not hear anything if you wired them up wrong. I saw a TV program
once where you couldn't hear someone speaking if they faced the other
way, as the sound from their mouth didn't bounce off anything. I guess
the same would happen if you were floating in mid air, like er....
space, but with air.

Anyway, it doesn't matter, you get precisely the same sound whichever
way you wire them up, I guess something just bounces.


Most of the sound you hear in any room is actually reflections.
Like 70%. So in your setup, you might get cancellation of the
direct sound, but that's only part of what you hear - and the
rest takes various paths that don't cancel.

But shouldn't it be enough to notice? I've tried swapping the connections to a speaker before and there is precisely zero noticeable difference.

--
Microsoft: This company has performed an illegal operation and will be shut down.

 

[Ragnusen Ultred]

Am Tue, 17 Apr 2018 13:14:57 +0100, schrieb James Wilkinson Sword:

Funny, whenever I've fitted speakers (and I've put quite a few
silly large stereos in my cars) I've never encountered more than
about 5 clips per speaker. Just remove one plastic panel and
unscrew the speaker from underneath.

You have an intuitive mind.

Every car is different. I've replaced spark plugs in an Infiniti where the
engine has to come out. For you to say, "funny, whenever I've replaced
spark plugs (and I've replaced a lot in my cars), I've never had to lift
the engine", is just telling us you haven't done enough engines yet!

Likewise, I've replaced what amounts to the PCV valve in a BMW (they call
it a CCV) where the amount of stuff that has to be removed is nothing like
that of a typical American car so for you to say something like "funny,
whenever I've replaced PCV (and I've replaced a lot in my cars), I've never
had to lift the intake manifold", is just telling us you haven't done
enough engines yet!

If they use cellular, why couldn't you play it live off Youtube
using the cell network?

You just don't have the expertise yet - but you will soon.

The iPad doesn't have cellular. It's WiFi only. And if it had cellular, it
wouldn't work, since the neighbor's SIM card wouldn't even fit, let alone
work. And they are on Verizon anyway, but it still wouldn't work as they
had puny cellphones.

You don't have the expertise yet to understand the problem set
sufficiently, (likely because you have no experience with iOS perhaps?)
which is fine but which seems to be the case.

Remember, it took only a minute or three to set this up, whereas what
you're suggesting is either impossible (putting the tablet on their wifi
network) or impractical by way of comparison (using a puny cell phone when
a tablet is better).

What would be preferable, instead of suggesting impossible or impractical
solutions, would be to suggest a one-step (instead of two-step) solution to
get the video onto the WiFi-only iPad.

Now *that* would be a useful suggestion (because it would take intelligence
and expertise to solve that problem, which is something that is not
intuitive).

 

[James Wilkinson Sword]

On Tue, 17 Apr 2018 15:11:22 +0100, Ragnusen Ultred <rragnusen@ultred.com> wrote:

Am Tue, 17 Apr 2018 13:14:57 +0100, schrieb James Wilkinson Sword:

Funny, whenever I've fitted speakers (and I've put quite a few
silly large stereos in my cars) I've never encountered more than
about 5 clips per speaker. Just remove one plastic panel and
unscrew the speaker from underneath.

You have an intuitive mind.

I see it as common sense.

Every car is different. I've replaced spark plugs in an Infiniti where the
engine has to come out. For you to say, "funny, whenever I've replaced
spark plugs (and I've replaced a lot in my cars), I've never had to lift
the engine", is just telling us you haven't done enough engines yet!

If I can't access A without removing B in the engine bay, I take it to the garage. I don't even change my own oil. I do however buy my own parts on Ebay. This really pisses off the garage who likes to make money on markup. I get them to do a service/MOT check and give me a list of what's wrong with it, then I turn up a few days later with all the parts and insist they only charge for the labour on the bill. If they refuse, bringing up the subject of ripoff and markup frightens off other customers and they get on with it.

Likewise, I've replaced what amounts to the PCV valve in a BMW (they call
it a CCV) where the amount of stuff that has to be removed is nothing like
that of a typical American car so for you to say something like "funny,
whenever I've replaced PCV (and I've replaced a lot in my cars), I've never
had to lift the intake manifold", is just telling us you haven't done
enough engines yet!

Car designers never seem to think of servicing ease.

If they use cellular, why couldn't you play it live off Youtube
using the cell network?

You just don't have the expertise yet - but you will soon.

The iPad doesn't have cellular. It's WiFi only. And if it had cellular, it
wouldn't work, since the neighbor's SIM card wouldn't even fit, let alone
work. And they are on Verizon anyway, but it still wouldn't work as they
had puny cellphones.

Then the ipad is a piece of shit. Use whatever phone of yours or theirs has cellular access.

You don't have the expertise yet to understand the problem set
sufficiently, (likely because you have no experience with iOS perhaps?)
which is fine but which seems to be the case.

I avoid IOS because I know it's rubbish.

Remember, it took only a minute or three to set this up, whereas what
you're suggesting is either impossible (putting the tablet on their wifi
network) or impractical by way of comparison (using a puny cell phone when
a tablet is better).

What would be preferable, instead of suggesting impossible or impractical
solutions, would be to suggest a one-step (instead of two-step) solution to
get the video onto the WiFi-only iPad.

Stop using an Ipad. Surely there are normal tablets (as in non-Apple) that can access the cell network?

Now *that* would be a useful suggestion (because it would take intelligence
and expertise to solve that problem, which is something that is not
intuitive).

--
On the topic of mobile phones:
Anything bigger than 4 inches is getting into the region where most people would have difficulty holding and using the device comfortably -- Callum Kerr, 2013.

 

[Peeler]

On Tue, 17 Apr 2018 14:11:22 +0000 (UTC), Ragnusen Ultred, the notorious
troll-feeding idiot, driveled again:

Am Tue, 17 Apr 2018 13:14:57 +0100, schrieb James Wilkinson Sword:

Funny, whenever I've fitted speakers (and I've put quite a few
silly large stereos in my cars) I've never encountered more than
about 5 clips per speaker. Just remove one plastic panel and
unscrew the speaker from underneath.

You have an intuitive mind.

Every car is different.

<FLUSH all the drivel>

Geez ...another troll-feeding who likes to hear himself talking! <tsk>

 

>"But shouldn't it be enough to notice? I've tried swapping the connections to a speaker before and there is precisely zero noticeable difference. "

Everyone's ears are different. I can usually tell immediately. It is much harder when the speakers are far apart, but if you put them right next to each other you should be able to hear the difference.

I have a DPDT switch wired for that, for reasons. Goes something like this :

==>:<== or ==:X:=
The "drawing" is not really working. The four connections on the outside are wired in an "X" configuration and a pair of wires goes to them, the other pair goes to the center connections. In and out are interchangeable. You are more likely to hear the difference with that because it is immediate, rather than turning it off, switching the connections and then back on.

With certain hearing deficiencies, not related to frequency necessarily and material that has little or no bass, it could be very hard to hear. A solo flute in stereo with ambiance for example, though a purist or audiophile might hear it, even I might not. It should be apparent on material with low bass though.

Even if you still can't hear it, take the switch and put two house speakers face to face at about a 45 degree angle, set the amp to mono and flip the switch back and forth. Even if you don't hear a difference in the sound there will be a marked difference in level.

It may not be apparent to some, but I can hear the difference in phasing between both fronts and both rears in a car. The switch idea came a long time ago and is useful for phasing a quad system with different type speakers in front than in back.

I know someone who was running a stacked system, two pairs of floor speakers. One set had its back to an open doorway and staircase, the other was more toward a corner. The latter sounded boomy so he put the bottom speaker on that side out of phase which smoothed the bass response.

Polk used out of phase midranges in one series of their speakers. There was a cable cross connecting them which fed the right side with an inverse signal to one of the midranges on the left and vice versa. This was to enhance separation/imaging. The idea was to cancel the midrange bouncing around in the room or something like that. Never heard a pair of that series but they got good reviews.