"Wall of Sound" - worth a try?

[xnewyorka]

you have been twice and now thrice warned about potential for mis phase blowing up part of your wall.

Understood. So what is the correct scientific way to go about connecting it up and ensuring that that does not happen? How do I determine whether a given driver is in or out of phase with another driver?

By the way, I should note that the Radial Switchbone does have a phase switch on it, so if I use that, it will be easy to get the phase correct between two amplifiers, because it is very obvious when they are out of phase by just listening. But unless I build a speaker phase switch box, I won't be able to do the same thing with individual speaker-to-speaker connections. Should I build such a thing, using a double throw, double pole switch to allow me to reverse the phase of one speaker with respect to another?

 

[Downunderwonder]

Understood. So what is the correct scientific way to go about connecting it up and ensuring that that does not happen? How do I determine whether a given driver is in or out of phase with another driver?

By the way, I should note that the Radial Switchbone does have a phase switch on it, so if I use that, it will be easy to get the phase correct between two amplifiers, because it is very obvious when they are out of phase by just listening. But unless I build a speaker phase switch box, I won't be able to do the same thing with individual speaker-to-speaker connections. Should I build such a thing, using a double throw, double pole switch to allow me to reverse the phase of one speaker with respect to another?

1st off is the battery test. Hopefully all your cabs have a 1/4" input to make it easy.

 

[xnewyorka]

1st off is the battery test. Hopefully all your cabs have a 1/4" input to make it easy.

Cool - got it. Yes, they all do. This looks like a handy device for this test as well as some other purposes:
https://www.amazon.com/PAC-TL-PTG2-...TF8&qid=1523501501&sr=8-1&keywords=pac+tlptg2

 

[Downunderwonder]

Cool - got it. Yes, they all do. This looks like a handy device for this test as well as some other purposes:
https://www.amazon.com/PAC-TL-PTG2-...TF8&qid=1523501501&sr=8-1&keywords=pac+tlptg2

The gizmo is unnecessary. A 9v battery and a cable with 1/4 plugs both ends later....

Hopefully all cabs are popping out with +9v on tip and sleeve -ve.

Next is confirming each amp pushes together via the birdsnest of junction boxes and cables. Easiest way is plug up everything but half of it and then only turn up one amp a little and then the other amp a little. If the lows don't magnify magnificently but instead diminish you got a mismatch.

 

[xnewyorka]

Don 't forget to post pics, before the cops arrest you!

Wise(b)ass

Okay, I have moved all the cabinets except for the Eden D410XLT into the same room. It's a start. I'll get that one tomorrow. Thank goodness it has wheels.
Next step will be to start to figure out exactly what cables do I need to to pick up this weekend to to hook it all up safely and properly.

Don't be confused by the pretty rosewood cabinet in the middle. That belongs to the 300 WPC stereo, not the bass guitar.

 

[seamonkey]

That's not a "Wall", that's a "Fence"

 

[xnewyorka]

So I performed a quick initial test with the cables already on hand, so it was just the Strategy into an 8 ohm load consisting of the Berg HD212 and the Barefaced Super Twin, connected in series. With the amp gain at just 9 o'clock (about 1/4 of the way up), the concrete floor of the basement was vibrating significantly. I could feel it in my feet, as well as throughout my entire skeleton through the air. The Sound Pressure meter peaked at 108 dB in the video and 109 dB in the subsequent test that I didn't film.
Remembering that each 3 dB represents a doubling of the power, I am not sure that I am going to get even remotely close to any of these records even if I get brave enough to turn it up some more:
Loudest band - Wikipedia
I did lose some stuff off a shelf across the room after a few seconds of playing, so the tests should probably be kept brief until everything at risk of falling is moved out of harms way.
What impresses me the most is that the sound quality is exceptional - completely clean and crisp, no breakup or distortion at all that I can detect. I had the treble cut back a little on the bass (a passive D-Bird). It will definitely be fun to try a slapping test on the Skjold, which is a slap monster.
The other thing that impresses me is how well the cellphone mic handles 108 db!