What's a beam blocker for? What does it do? Sorry - these videos pose more questions than they answer for me.

I do like the part where the amp and then the speaker cabinet just materialize out of thin air. I've always wanted a way to do that at gigs. If that's what the beam blocker does, consider me sold.

Can I use the beam blokker for my wife?

Absolutely!!!
Beam blocker size depends which beam you want to block and from where.
 

Sorry but this seems like a rather cheap and less sophisticated version of the Weber Beamblocker. I have one on the top speaker in my 2x12 speaker cabinet. Have a look here:
http://www.webervst.com/blocker.html

Pleasant idea, especially if you can use it frequently!

Hi Hywel,

I’ve tried it in ordinary combo and you are right, it reduced high frequency a bit. Also it changed speaker’s directivity for better, more spread of even frequencies, but it did not worked in my cabinets because my cabs baffles are recessed about 5,9cm from the front grill to place the microphone capsule.
That’s why I’m using same high frequency absorbing acoustic foam 10’’ circle attached to a guitar stand. Best position is 15 - 25cm exactly in front of the speaker. In this way it allows player to hear almost unaffected tone but stops nasty ice pick and fizz (not much anyway in nice OTS amps). Same time inside microphone picks up unaffected sound and sends it to the PA.

I’ve bought it on eBay for £22.
It was already modified for amp down, cab up version.




Later I’ve reversed it for more compact application.