Ceriatone Forum

Here is a video sample

http://www.youtube.com/watch?v=1PCJh1QvcMc

and here is some info about amp & cab stand and beam blocker.

http://www.youtube.com/watch?v=NoYdL5MufKo

Cheers

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.

You’ve got it straight in the root my friend !!!
That’s what a beam blocker does – eliminates transitional time period between head and cab setup on the stand. And this trick has tremendous artistic effect on the listener/viewer.
Must have for all D style amp owners and trick lovers.
Are you ready to order one or two?

Can I use the beam blokker for my wife????

 ;D

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

I want to block the lower beam , so i take the big one, in red please!!

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 (http://www.webervst.com/blocker.html)

Emiel, problem with the Weber’s beam blocker (more precisely – the beam diffuser!!!) is that it does not work at all. I guess you are not familiar with Mr. Jay Mitchell’s pretty large post about speaker directivity http://www.thegearpage.net/board/showthread.php?t=470956&highlight=speaker+directivity

Please read it carefully, you’ll love it.
Cheers

Pleasant idea, especially if you can use it frequently! ;D ;D ;D

It'll take you a day or two!! Something like 45 pages.....

Have you tried using a doughnut shaped blocker in your mount Doc? As I understand it its not a 'beam' as such at the speaker, the beam is created by time effects/phase cancellation caused by the sound coming from a non-point source. JM's doughnut  is designed to prevent the phase cancellation, though in my experience there is a lost of top end, but the sound is more consistent around cab.

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.

(http://www.guitarampcab.com/BB3.JPG)

Never mind the Beam Blocker......(I use a Tayden diffuser which I guess is similar?) where do you get those stands?

I've seen ones that hold speaker cabs or combos but not one that holds a head and speaker cab.

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

(http://www.guitarampcab.com/Alltogether.jpg)


Later I’ve reversed it for more compact application.

Hi Doc, is there a manufacturer or model number that I can google for the stand?

Ika my man.... what kind of material did you use on that blocker. You said same high frequency absorbing acoustic foam... what is this exactly and were did you get it. I presume just a regular foam will not work like that.

Man, you're always inventing some stuff,... it's always fun to see what things you came up with.
 ;)

The stuff I used for my Jay Mitchell Donuts was this

http://www.efoam.co.uk/Sacoustic.php (http://www.efoam.co.uk/Sacoustic.php)

Not sure what thickness Doc was using but I'd reckon 10mm would be about right. Possibly 12mm. I found the 16mm too restrictive, lost too much top end.

Hi Mcinku,
Hywel is correct, I use 10mm thick acoustic foam from this company http://www.efoam.co.uk/Sacoustic.php
I’ve used cheap badminton racket head to glue foam circle inside the frame and attached it to guitar stand. I can move it in different position to get the “perfect” tone.

Exocet,
Adam Hall sells this stands in UK
http://www.adamhall.com/uk/AH_p--project_27__b--SAFS02

You can attach metallic angles for wall shelving to the lower front legs of the stand, that’s it.
Cheers

Cheers Pickmaster - I'm going to do something similar myself as my Head Cab / Speaker cab combination is far from stable when one is placed on top of other....I should have made my speaker cab a bit deeper.