cubo 12

Cubo, can u post HornResponse data so that i can simulate another woofer ?
I want to se the Phase and GD aspeciali.. and the cone displacement as well....
Thanx

Hi Kentech,

No unfortunately not, but you're free to derive them yourself. IIRC Bee on this forum posted a script as a how to in the Cubo 15 topic.

Best regards

Cubo

Hi,
I tried to simulate Cubo 12 in hornresp. But I think that something is wrong in my input data. Please look at my input data. What's the mistake?

smiley1 Hi,
my Cubo 12 is now finished and it works WELL!

I'd like to thank everybody from this forum for inspiration, help, advice, motivation and knowledge sharing ! smiley32

-special thanx for Mister Cubo for this great design and general helpfulness smiley20 !
(...and one for my builder friend Herman the carpenter, of course)

here are a few pics :

By the way, I'd have one more little question to ask :

my Cubo12 is pd12sb30 loaded
I tried the Cubo with an amp delivering 500w at 8Ohms per channel, filtered at 100hz (its a built in crossover that make high frequencies>100Hz go into one channel, and low frequencies<100Hz into the other channel)

Cubo12 pd loaded seem to be able to take (much?) more than one side's power...so I'm planning to get a external active crossover to connect Cubo12 to my amp in bridged mode.

How much power do you think Cubo would take to play to its best?
how careful should I be when going into bridged mode? smiley29
how dangerous is it to use Cubo12 without the recommended (40~45Hz?) lowcut (it seems that the cheap active filter I m aiming at offers a simple on/off 25hz fixed lowcut,)

my amp's specs :

OUTPUT POWER
RMS
Stereo
8 Ω per channel, stereo 500 W
4 Ω per channel, stereo 700 W
Bridged Mono
8 Ω bridge mode 1400 W
PEAK POWER
Stereo
8 Ω per channel, stereo 600 W
4 Ω per channel, stereo 1000 W
Bridged Mono
8 Ω bridge mode 2000 W

i have built CUBO12 and MTH as well. I;d say that in MTH u have deeper base. I think that is enaugh 500W RMS in 12SB30 aspecialy if u don;t use a HPF filter at 40-45Hz.

MartinS. wrote: Hi,
I tried to simulate Cubo 12 in hornresp. But I think that something is wrong in my input data. Please look at my input data. What's the mistake?

Hi martin, i dont think you can sim the cubo using hornresp, you need a more advanced sim programme like akabak.........

kentech wrote: i have built CUBO12 and MTH as well. I;d say that in MTH u have deeper base. I think that is enaugh 500W RMS in 12SB30 aspecialy if u don;t use a HPF filter at 40-45Hz.

thanx for the advice, I'll follow it and keep on with my 500w, instead of overdriving my new toy to an early death !

is your woofer new ? if yes, u must play it a lit bit time of half of it;s power... it;s not ok to turn it to maximum for the first time... U should use it at half power for a few hours..10-20H ( meaning a few partys ) and after that u can attack it with full power. after a few partys u will have deepeer base as wel, the membrane of the woofer will become smoother...
anyway, my suggest is don;t use your woofer with uch power than 500W, asecialy if u don;t use HPF at 40-45hz with 24db/oct ...

:thumbup: thanx for the tips, Kenwood,
...and thank you for taming my first box newbie's over-enthousiasm !

I'll keep on learning :geek:

:thumbup: I love this forum!