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11-07-2005, 07:00 PM
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#2 of 14 
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You might also consider the Acoustic Elegance AV 15. It's about the same as the driver you are looking at in terms of displacement (slightly more actually) and it's a little less expensive. Thermal power rating is a little lower but not significantly IMHO (less than 3 dB difference).
I would not recommend exceeding the manufacturers thermal power rating. That speaker is rated for 800 watts @ 4 ohms and the amp supplies 1024 watts @ 4 ohms. Depending on the enclosure you may not even be able to take advantage of 800 watts of power.
Travis
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11-07-2005, 07:12 PM
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#3 of 14
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By the way, did you want to build a sealed or vented enclosure?
I usually design the enclosure before I pick an amp. That way I know how much power it will take to drive the subwoofer to it's mechanical limit.
Travis
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11-07-2005, 08:29 PM
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#4 of 14
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Go multiples... More SPL, more chest-hitting "thump."
A single Titanic will work fine for HT, but for music, it'll be sorta iffster... I'd think Dayton Quatro 15, two of 'em, in about 7 cubes each, with the 240 watt plate amps (nicer crossover than the 250). Tune 'em to about 21hz, you've got protection against stupidity, and they will give you 119db, with an f3 of about 24hz. And with the higher tuning, 240 watts (per) is not enough to overexcurse until you hit 17hz or so... Add in a first order down around 13hz or so, and you've got no worries that some beered up "dj" is going to launch the drivers...
Other thought would be something like some of Bill Fitzmaurice's horn-loaded designs - you can do your own search. I don't know if they'll play as low, but they will play LOUD.
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11-07-2005, 08:54 PM
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#5 of 14
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Member
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Probably a little more appropriate to the college environment than the Titanic III is the SS RL-p 15" They have a double spider with woven leads, so they're designed to take a pounding.
The F3 is a bit high if put in a box like the PE kit (3 cu ft). But a dab of EQ will take care of that (Behringer BFD). If you want lets say 160L or larger ported box tuned to 18Hz it, will play really loud.... :wink:
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11-08-2005, 01:04 AM
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#6 of 14
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Join Date: Jan 2005
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gettin kinda pricey on the driver selection, I thought $200 for one driver was a lot.
I'm interested in the idea of using two cheaper subs instead of one. I had never really thought of that. I know for music it can be much better, but I'm a bit concerned that it won't be nearly as crisp or clean as a single great sub for HT. I'm trying to find something here that will satisfy both ends of the spectrum.
I haven't decided yet whether I want sealed or vented. I've seen both and there are plans for both available. What do you guys suggest?
also, what about this sub instead:
http://www.partsexpress.com/pe/showd...number=299-665
it seems a better match for that amplifier. |
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11-08-2005, 01:35 AM
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#7 of 14
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Member
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Quote:
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I have about a $600 budget,
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Here's how to do this on your budget
Driver SS RL-p 15" $245 + shipping
Amp Nady XA1100 $146+ shipping
Behringer BFD $99+ shipping
Figure $50 for shipping and you hit your budget with a high power amp, a very high quality speaker, a full blown parametric EQ, and money left over for lumber and hardware for the box.
Note that the 24.6mm Xmax on the RL-p 15" is such that it's output will equal almost 2.5 Quatro 15"s
The driver you linked to on PE has a Fs of 37Hz = car audio boom box
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11-08-2005, 09:13 PM
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#8 of 14
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Member
Join Date: Jan 2005
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the xmax on that RL sub are impressive, no doubt. But my original plan was to use a plate amp. I'm not entirely set on that - if people say a separate amp with an EQ is the way to go then I'll do that. Certainly it's a cheaper way to get a 1000 watt amp.
Good call on the DVC driver from PE. It's definitely not what I'm looking for.
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11-08-2005, 09:21 PM
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#9 of 14
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Join Date: Jul 2005
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Quote:
| I'm interested in the idea of using two cheaper subs instead of one. I had never really thought of that. I know for music it can be much better, but I'm a bit concerned that it won't be nearly as crisp or clean as a single great sub for HT. I'm trying to find something here that will satisfy both ends of the spectrum. |
If it's good for HT then it's good for music too. Using two speakers won't make it more musical, unless you are running them in stereo IMHO. Sometimes subwoofers used in mono can give their location away, especially if you are not careful where you position it in your room.
OTOH using stereo subs will often times give you less even frequency response in your room, but it also reduces the degree to which resonances are exited in your room. It comes down to which is more important, even FR or 'tight' bass.
Quote:
| I haven't decided yet whether I want sealed or vented. I've seen both and there are plans for both available. What do you guys suggest? |
A ported box will give you the most bang for the buck. I tend to favor them for HT. A sealed will give you 'tighter' bass but with tunings in the teens I wonder if it's even audible with most program material. In my experience, ported boxes behave like sealed boxes ~ 1 octave above tuning and above. Kick drum fundamentals are at ~ 35 Hz. With the same driver, a vented enclosure will give you less harmonic distortion, and often less compression. You need bost the bottom end with an EQ to get the most from a sealed enclosure. Every 3 dB of boost cuts the effective amplifier power in half.
Also, don't shop for watts. Find a driver with a high effiecency. It will require a larger box then a less efficient driver, but you said that space isn't a concern. If you download Win ISD, it will help you decide how much power you will need to get the most from your driver.
Travis
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