1st Build 2x Tuba 24

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sine143
Posts: 3066
Joined: Sat Feb 06, 2010 3:27 pm
Location: Raleigh NC

Re: 1st Build 2x Tuba 24

#31 Post by sine143 »

wait... why do you need a driverack when you have xti2002s? Limiter is much more intuitive on the XTI (peak voltage setting, adjustable attach and release).
Built:
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208

2x OT212 (delta pro 450a loaded, eminence psd)

nouvo1
Posts: 22
Joined: Sat Nov 02, 2013 11:48 pm

Re: 1st Build 2x Tuba 24

#32 Post by nouvo1 »

I didn't think the XTI gave me the option of a highpass filter in conjunction with the crossover. The Driverack will be required later anyways. Also I've only found how to limit the xti in db increments not voltage. Any hints here?

Bruce Weldy
Posts: 8585
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: 1st Build 2x Tuba 24

#33 Post by Bruce Weldy »

sine143 wrote:wait... why do you need a driverack when you have xti2002s? Limiter is much more intuitive on the XTI (peak voltage setting, adjustable attach and release).
Why?

EQ, gain adjustment, feedback suppression, and most importantly.....not having to stand on your head to make a change to the sub amp which is always in the bottom of the rack. :mrgreen:

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

Grant Bunter
Posts: 6912
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: 1st Build 2x Tuba 24

#34 Post by Grant Bunter »

nouvo1 wrote: Also I've only found how to limit the xti in db increments not voltage. Any hints here?
Sure:
Measure the voltage at the binding posts (with a digital multi meter) as you change the dB setting in the limiter, until you get the correct voltage.

Initially, you have to measure to know what maximum voltage is anyway, so just leave the multi meter in place and adjust the limiter.
Yell out when you're up to that stage...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

nouvo1
Posts: 22
Joined: Sat Nov 02, 2013 11:48 pm

Re: 1st Build 2x Tuba 24

#35 Post by nouvo1 »

It's up and running. Very impressed with the sub's sound. Not impressed with my room's response to it. I've tried corner loading it, wall loading it, pointing it straight out into the middle. I'm sure the second sub will even it out. The room is funny shaped. Like a rectangle with one side cut at an angle. There are actually 5 corners. I'm thinking a better place for it could be corner loading it in the smallest corner. I don't have a long enough cable to go over there just yet, but I'll continue messing around with it.

Grant Bunter
Posts: 6912
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: 1st Build 2x Tuba 24

#36 Post by Grant Bunter »

By "it" do you mean you've completed one?

Don't get to fussed about positioning until the second is completed.
You've already learnt you have room modes/nodes....
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

nouvo1
Posts: 22
Joined: Sat Nov 02, 2013 11:48 pm

Re: 1st Build 2x Tuba 24

#37 Post by nouvo1 »

Yes, one is completed. Sub number 2 is all cut out and ready for assembly. I'm not going to have much assistance on the second one, so I hope I've learned well through the process of building the first one.

sine143
Posts: 3066
Joined: Sat Feb 06, 2010 3:27 pm
Location: Raleigh NC

Re: 1st Build 2x Tuba 24

#38 Post by sine143 »

Grant Bunter wrote:
nouvo1 wrote: Also I've only found how to limit the xti in db increments not voltage. Any hints here?
Sure:
Measure the voltage at the binding posts (with a digital multi meter) as you change the dB setting in the limiter, until you get the correct voltage.

Initially, you have to measure to know what maximum voltage is anyway, so just leave the multi meter in place and adjust the limiter.
Yell out when you're up to that stage...
the limiter on the xti 2002 is adjustable by volts AND Dbfs. meaning you can just dial in voltage limit, no voltmeter required.
Built:
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208

2x OT212 (delta pro 450a loaded, eminence psd)

Grant Bunter
Posts: 6912
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: 1st Build 2x Tuba 24

#39 Post by Grant Bunter »

sine143 wrote:
the limiter on the xti 2002 is adjustable by volts AND Dbfs. meaning you can just dial in voltage limit, no voltmeter required.
Cool, tell old mate how to limit by voltage then please :)
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

nouvo1
Posts: 22
Joined: Sat Nov 02, 2013 11:48 pm

Re: 1st Build 2x Tuba 24

#40 Post by nouvo1 »

Yeah I haven't found a voltage limiting function yet. doesn't mean it doesn't have it, just that I can't find it.

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