Awesome! Love the finish you have got there! Keep us posted and get some measurements.
Awesome job. I love the overall finish!1st impressions (glue barely dried up, lol)!
Transformers beginning/base attack:
Right after voice in the movie beginning says '..but we we're already too late!" and helicopter shows up --> :hsd:! :devil: Really really nice semi-deep and floor shaking bass which I could not achieve with Creative Sound Solutions SD12 @ 120 liter box @ 18Hz tuning. Bass with this closed shiva box is really tight and fast. Continuing to base attack impressions we're pretty much the same. Bass sounds deep and controlled and truly shakes the room.
Transformers base attack survivors battle this scorpion type robot in the desert:
All the missiles fired by the decepticon transformer really makes the impact feel real. My ears were little numb because bass levels climbed as high as 109dB (+/- 3dB), but still Shivas we're completely in controll of the bass. I was impressed how controlled and detailed the bass was.
105 sabot rounds and the THUDS on the ground made Shivas work about 1cm P-P excursion which is even more impressive considering SPL was way over 100dB there. Those thuds must be at 30-40Hz range.
These drivers are beasts even in very small cabinet like mine! :unbelievable:
Next up is doing some measurements and maybe finally getting that BFD or anti-mode. I know there are few mountains in the Frequency Response without measuring it with REW! :R
That isn't a big enough difference to get excited about.I get a Qtc of .776 with that box size. Can you confirm .707?
And likely no difference once EQ'ed but I am curious about the difference in modeling.That isn't a big enough difference to get excited about.
I'll get back to this once I get proper cables.I would like to see some REW measurements. What kind of problem did you have?
I have one 4,06cu^3 sonotube which has two Shiva-X drivers. One in both ends of the tube. And it really shakes the room which is pretty remarkable considering the size of the sub. (You know, it is small...)Not bad at all. Assuming the graph is accurate (and I have no reason to doubt that it is) you are getting some nice <20Hz action there. A very capable sub indeed. Congratz!
For some reason I was thinking you built two of these. Did you build one or two?
Ye, that is how it seems, but REW sub cal signal shows 75dB on the SPL meter and so does REW speaker cal signal with the mains. Funny how the level seems to rise so much in full range measurement compared to sub only. I blame the calibration procedure.Is it me or is this sub a bit *hot* compared to the mains?
Tube lenght is 1015mm. Tube inside diameter is 400mm. Outside diameter 414mm.very nice build this is something i might be interested in building myself. would you mind telling what diameter and length tube you are using and if the drivers are wired out of phase? thank you