[dBe]

Nothing new with that diffusor information, is there?

Here is the latest news on them:

Acoustic Building Block Diffuser Series:  2.2lb density EPS.  They will dent fairly easily when raw, so be advised.  They are shipped with protective packing material (cardboard and masonite panels) that can be used to tune the low frequency absorption characteristics of the diffusers.  Properly used they can provide broadband absorption/diffusion from 80Hz to beyond audibility.  The cardboard and masonite can be attached to the diffusers (anything from double stick tape while tuning, to glue when done playing) to add mass.  They behave as diaphragmatic absorbers when mass loaded.  The heavier the added mass the lower the effective tuning of the absorber.  Ultimately we will have a guesstimate chart for room tuning that will go along with the products. 


ABB1      

   Raw               $   40.00 per pair
   Painted               $   75.00 per pair
   Sealed & Painted                      $ 150.00 per pair

ABB2

   Raw               $   50.00 per pair
   Painted                 $   85.00 per pair
   Sealed & Painted                      $ 175.00 per pair

ABB3

   Raw               $   75.00 per pair
   Painted                 $ 100.00 per pair
   Sealed & Painted                      $ 200.00 per pair

A pair of ABB Diffusers are a matched male and female set.  They are 23 ?? wide  X 23 ?? high.  The depth of the different pieces of the series are nominally:

ABB1         4 1/4"

ABB2         6 1/4"

ABB3         9 7/8"

Standard color selections are these eggshell Behr Paint colors:

      Linen White 1870
      Dried Chervil ICC-105
      Library Red ICC-82
      Traditional Leather ICC-81
      Pure Black
      Pure White


Custom color selection is determined by Behr Paint Colors available at Home Depot.  Any color may be ordered by using the Behr Paint number.  The upcharge for this service is a flat fee of $50.00 per order.

The sealer is a polyurethane coating that gives a harder shell on the surface of the diffuser and also is less absorbent in the high frequencies.  We do not recommend them to be used raw.  They really do need a painted finish.  We are offering them raw for the true DIYer.  The painted finish is slightly absorbent in the very high frequencies.  The standard finish is an eggshell sheen, but we can do any thing from a flat to gloss finish.

There will be a knocked down, interlocking 8' wide X 4' high grid system available for them in the near future, but this can be easily made by the average DIYer to separate the pieces and make 'em look nice.

Let me know if you have any questions.  I'll be updating my website in the near future when I have some pictures to go along with the verbage.

Dave 

[HT cOz]

Wow Dave this is really cool.

[persisting1]

Wow Dave this is really cool.

+1

I'm just waiting for the pictures 

[dBe]

Wow Dave this is really cool.

+1

I'm just waiting for the pictures 

Basically, you are going to see the same units that are at the head of this thread, but the pieces that I took to RMAF only had one coat of a flat paint on them.  We ( the "group") have decided that eggshell is the best finish as a compromise between acoustics and aesthetics.  It gives a nice sheen to the finished product.  It is expanded polystyrene foam, afterall.  They can be wallpapered, flocked, stuccoed... whatever floats your dinghy.  The cool thing is that they work really, really well.  The ABB1 is the unit that will be most effective in listening rooms.  The other units (ABB2, ABB3) are intended for more professional applications.  The ABB3 will be a very useful unit to kill corner bass loading and honkiness, though.  I'll try to get a tutorial together this coming week and make it available.  Just let me know if you want a copy.

Dave

[TRADERXFAN]

Dave, thanks for getting this together.  Pricing seems pretty competitive.

Could you explain what you mean about using the cardboard and masonite to add mass?  I would like pictures of that. I can't picture what you are doing.

Please send me a copy of tutorial too.

-Tony

[jtwrace]

Please send me a copy of tutorial too.

Me too please

[satfrat]

Please send me a copy of tutorial too.

Me too please

Me three please. 
 
Cheers,
Robin

[dBe]

Please send me a copy of tutorial too.

Me too please

I'll let everyone know when it is ready.

Thanks, guys.

Dave

[face]

Any pics bud? 

[dBe]

Any pics bud?

Here is one of a small install.  This was taken before it got perimeter trim.  This ABB 2's in the center flanked by 4 ABB1's.




Does this help, Mike?

Dave

[face]

Yes, you'll be hearing from me soon. 

 

[TrungT]

Dave
That's looking great. 
I may have to bring out my tape measurement.