BillFitzmaurice.info

Should be called the coffin.
Nice work.

it surely look like a coffin...

Routed some bevels


And some painting



It´s really matte black... when it dries.

Hopefully today after two coats of paint i will do some testing and measuring

El dillo wrote:Hopefully today after two coats of paint i will do some testing and measuring

Hopefully, you did horn path leak testing before painting....

Nice build, BTW.

Hopefully, you did horn path leak testing before painting....

Nice build, BTW.

Yes, as good as i could with a shorter piece of tube.

El dillo wrote:Yes, as good as i could with a shorter piece of tube.

Should be all you need. 10V@20Hz will really show even the slightest of air leaks.

Please do the forum a small favor and fill out your location in the User Control Panel, located in the top right hand corner of every page.

Are you going for that glossy, piano black finish? I can only dream of being able to do a finish like that.

Some garage measurements...
REW and calibrated UMIK-1

No expert so i apreciate tips on how to do this right...

THTLP on saw horses 1,5m from walls - mic exact infront of mouth, Volts... don't remember (very low).


THTLP on saw horses 1,5m from walls - mic 1meter infront of mouth, Volts... don't remember (very low).


I also did some dB meter readings (not calibrated)
THTLP on saw horses 1,5m from walls - mic 1meter infront of mouth

@ 5 volts
50hz @ 95 dB
40hz @103,9 dB
30hz @ 99 dB
25hz @ 95,1 dB
20hz @ 93,4 dB

@ 17,3 volts (max output from amp)
40hz @ 113,9 dB
32hz @ 112,1 dB
Sweep 10-100hz peaked @ 117,4 db

will try to do some measurements in livingroom corner loaded later.

Measure with the subs on the floor, against the wall, and the mic an inch above the floor. You'll still have peaks and valleys, caused by room reflections.

Ok, will try that instead.

Bill Fitzmaurice wrote:Measure with the subs on the floor, against the wall, and the mic an inch above the floor. You'll still have peaks and valleys, caused by room reflections.

Against the wall, as in mouth facing the wall, standard use position? Then place the mic between the mouth and the wall?

With mouth 18" from wall facing wall or mouth facing along the wall?

OK... Its huge and space is tight

Let's see how it ends...

Rich4349 wrote: Then place the mic between the mouth and the wall?

Only if that's your usual listening position.
If you're taking indoor measurements what matters is response at the listening position with the speakers placed where they give the best result.

Thanks got confused Indoor/outdoor


10-150hz sweep, mic @ listening position and horn cornerloaded

El dillo wrote:Its huge and space is tight