The drivers have arrived from Parts Express and I am picking up the particle board from the store tomorrow.  I have built home audio speakers before, but this will be my first Pro Audio Cabinet. I am excited and a little scared.

Where should I look for some good advice on marking, cutting, gluing and clamping?  I try not to assume that I know the best way to do something.

Wakanda

I have built 6 of these for a DJ friend who thinks they are the greatest.  We have never used the Goldwood GW-12120 speaker.  We've used a pair of the Cheeplights look alike (p/n 411-WF12120 at http://www.cheaplights.com/cart/page81.html ) and also the Pioneer musical instrument speaker from Parts Express:
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=290-142
We have never used the recommended crossover either, running the woofer full range and using a cap and a coil for the horn to cross it over at 2200 hz (6.8uf, .87mh).

I would not recommend anything but 3/4 plywood for the construction unless you don't ever plan on moving them.  They are quite heavy by the time you get done (especially with the pro woofer in them).

Also, they are very lacking in bass.  With the Fs of the Goldwood at 68 hz, you basically don't have bass.  This is not a bad "feature" though when you add subs.  Just don't expect them to be very impressive before you add a sub.

I wound up running the tuning board in through the bottom, so the tuning board slot would not be visible.  After adjusting the tuning board to sound best, I measured the opening and then drilled a couple holes in the tuning board to get the same square inches of openning.  Then the tunning board was installed permanently, all the way in.


Dan

Asiquis

The 12" drivers and the crossovers I've used have been cost motivated.  I had the Pioneers lying around from another project.  All 12" drivers I have tried in these cabinets have produced very low bass output.  If cost is a concern, you can probably save enough by using the Pioneer 12's and a coil/cap to buy a plate amp, I like this one a lot :

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-805

and a couple 10's for a WO32.  That would be my recommendation.  I don't think you will be happy with the Pro12's without a sub, especially outside.

Dan

Not to harp on this but: is the cabinet "tuned" to a certain frequency like a ported box- that is I mean without using the tuning board the cabinet is tuned to 65 hz.

Steve mentions to use 1.1 cu ft as box size when doing calculations.
If I wanted to get down to 40 hz would that be possible with this cabinet if I were to use a different woofer and would that then throw off the crossover?
OR
Do I need to use the tuning board with any other woofer used in this cabinet?

My hope is to get a little fuller range out of the cabinet. Right now we are using some old 2 way KLH bookshelf speakers with an 8" woofer /1" dsoft dome tweeter and an efficiency of 88dB with a 100 watt yamaha integrated amp.

We dont want to blow the neighbours away, just a little more uuumph.

Only partly confused and still learning.  [smiley=10.gif]

thoughts?
thanks

Thanks for the offer!

How about this driver: http://www.parts-express.com/pe/pshowdetl.cfm?&DID=7&Partnumber=264-391&ctab=2#T...

Selenium 12WS600 12" 600W Woofer

I tried it winISD alpha in a 37 liter box ( I think this is the volume Steve mentioned to use for calculating) tuned to 35Hz and got a +4dB hump in the mid 70's and it -3dB is about 46Hz.

Could I use this and the crossover that Steve suggests along with the Selenium 210ti suggested and the tuning board?  Or....?

Thanks