Chest Thumping Bass

croseiv

croseiv

Audioholic Samurai
When I crank up my Ultra the driver reminds me of a sledghammer....It really pounds.
 
mike c

mike c

Audioholic Warlord
so, how do I get this disco thump? ;)

what is the difference between discos/concerts/car setups and the home setup?

take a car for example, what frequency is the cabin gain boosting? perhaps i can boost those frequencies to find the chest thump?
 
E

EricB1

Enthusiast
Ho Hum??

Not to stir up the pot even more but as an owner of an MFW-15, please let me say this is one incredible machine. My room is over 4000 sq feet and this sub hits extremely hard. I could only imagine that two would be insane. As for humming, the only humming I hear is coming from me. Yes some have experienced a humming problem but I don't think it is fair to say many many people have. I am very happy with their product!! Not knocking SVS here just lettin you know my story:D
 
ivseenbetter

ivseenbetter

Senior Audioholic
Not to stir up the pot even more but as an owner of an MFW-15, please let me say this is one incredible machine. My room is over 4000 sq feet and this sub hits extremely hard. I could only imagine that two would be insane. As for humming, the only humming I hear is coming from me. Yes some have experienced a humming problem but I don't think it is fair to say many many people have. I am very happy with their product!! Not knocking SVS here just lettin you know my story:D
Thanks Eric. Input is appreciated. I guess there is no magic "best of" option...not a bad thing, but doesn't make the job for a beginner like me any easier.
 
annunaki

annunaki

Moderator
Taken from craigsub:

Here is the scoring summary with the Home Theater score and Music score, respectively shown as (HT-M).

Elemental Designs A7-900 ($2200 ID/SI): 116 points (63-53)
Epik Conquest ($1599 ID): 112 points (60-52)
SVS PB13-Ultra ($1499 ID): 109 points (57-52)
Epik Castle ($999 ID): 109 points (59-50)
AV123 MFW-15 Duals: 109 points (56-53) (note, duals were tested as duals are offered as a package)

Now if this blind testing holds water, then two MFW-15's tested as a pair scored 109 points, just like one PB13-Ultra :)

http://www.tweakcityaudio.com/forum/showthread.php?t=11
That is a subjective test that has no linear displacement measurments. As can be approximated, based upon the measurment(s) that were provided in the test, the dual 15" subs would have more output than the single ouput measurments listed. Simply add about +3db to each of the measurments shown in the test for approximate numbers.

The thing is that with dual 15" woofers one is moving A LOT of air. I have the feeling it would seem more powerful than a single sub, especially when they are properly placed within the room, balancing response.
 
ivseenbetter

ivseenbetter

Senior Audioholic
The thing is that with dual 15" woofers one is moving A LOT of air.
This is the logic in my mind that makes me think that the MFW combo has to be better than the Ultra (at least for what I am shooting for in the room of my size). I guess maybe the drivers in the 15 don’t actually move back-n-forth as far as the Ultra which is why they seem to perform at about the same level as the 13" Ultra?
 
annunaki

annunaki

Moderator
In my previous post, by one, I meant an individual, not one sub.

Two high quality subs will perform very well in a large room such as yours. It will sound "louder" and more "full" than just one due to the fact that the response will be much more linear (less room affect).

The 15" drivers do not have to move as far as a 13" since they have more surface area to begin with. One MFW is nearly on par (within 2.5db or so from craigsub's measurements) with an Ultra with the exception of the extremely low frequencies. Two will surely exceed it.
 
ivseenbetter

ivseenbetter

Senior Audioholic
Dang, by the end of all this thread and the other one I have in the Loudspeaker section, I am going to end up being an AV123 fanboy. Seems I keep coming back to their brand.
 
croseiv

croseiv

Audioholic Samurai
This is the logic in my mind that makes me think that the MFW combo has to be better than the Ultra (at least for what I am shooting for in the room of my size). I guess maybe the drivers in the 15 don’t actually move back-n-forth as far as the Ultra which is why they seem to perform at about the same level as the 13" Ultra?
2 MFW15=1 Ultra. To me that's quite a statement for the Ultra.
 
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annunaki

annunaki

Moderator
2 MFW15=1 Ultra. To me that's quite a statement for the Ultra.

If you actually check out the numbers, it is not the case.

No ground plane measurments were done for the dual 15" subs. The single MFW15 was very close (within 3 db of a single Ultra). In room, with the additional displacement of another 15" woofer, and the fact that you can optimally place two subs to balance the response, the dual 15" setup should audibly out perform a single Ultra.
 
croseiv

croseiv

Audioholic Samurai
If you actually check out the numbers, it is not the case.
Actually I was referencing the score here:

Two MFW15=109 points. One equals 103 points at least in this scale.

One PB13-Ultra equals 109. But yeah, looking purely at the dB output (above 20 Hz), the edge would appear to go the dual MFW15s. I wonder how one would pair with an Ultra?
 
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Gimpy Ric

Gimpy Ric

Moderator
I'll take my SVS PB13 Ultra. I saw pictures on the AV123 Forum of a stripped out screw on a sub baffle one owner had, and SVS has exceptional build quality. I don't have ANY hum either.

You pays your money, and you take your chances :eek:. If I want it, I can pressurize my room with my Ultra, but maybe the OP needs more cone area for his large room, I don't know.
 
ivseenbetter

ivseenbetter

Senior Audioholic
Well, I decided to go with the dual MFW setup. I was able to squeek in there before they raised the prices. Heck, with the new risk free trial there is no reason not to check them out. If I end up being unhappy I will return them and go for an SVS product...

Thanks for all the input guys. It is appreciated. I know you all get asked the same questions over and over again...and most times the same answers already given are still the best options so it probably gets old saying the same things over and over again.
 
mike c

mike c

Audioholic Warlord
what finish did you order? the satin black is backordered for ages ... but I think the MOHO is available immediately.
 
annunaki

annunaki

Moderator
Actually I was referencing the score here:

Two MFW15=109 points. One equals 103 points at least in this scale.

One PB13-Ultra equals 109. But yeah, looking purely at the dB output (above 20 Hz), the edge would appear to go the dual MFW15s. I wonder how one would pair with an Ultra?

Remember these scores are totally subjective.

The only thing worth anything in the test were the ground plane measurements. We don't even know if the dual MFW's were set up optimally in the room. My guess is that they were both placed in the same location to be fair to the single subs in the test.
 
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