Looking for Opinions on Setup using 4 Sealed Mach 5 FTW 21" Sub Woofers

[lovinthehd]

With all due respect, I dont think you have read all my posts.

I am not putting all 4 subs in 1 spot. All 4 boxes will be in different spots. 2 across the front of the room and the other 2 behind the listending area(Couch). I may move them around a bit once setup, but will see how it sounds first

The modeling has nothing to do with where I am placing the subs. I modeled one to see the SPL graph and then the way winisd works I had to muliply the cubic foot for the box by 4 to 25 cubic feet to get a proper SPL graph for 4 subs so I could see the output of 4 subs vs 1.

To answer your other questionabout the CVR amp, I had seen a youtube video of a couple guys putting that amp on an amp dyno and it was bang on to what it was rated for. I wll try and find a link to share to that as it was a while ago I seen it. If you read up on CVR amps, they do not dissapoint and are the best bang for your buck right now.

I am also not plugging it in to my wall socket, as Im sure, I would be tripping the 15 amp breaker. The amp will be located in another room right beside my hydro panel so I dont have to hear the noisy fans during quiet parts of the movie.

Im going to wire it directly into the hydro panel and feed it 220 volts and use a double 30 amp breaker so it will have plenty of juice.

Yes, I have read all the posts. That's why I said don't model the sub as if it is in one box in one location, that will yield different results than four single boxes, especially as placed throughout a room. I get what you're trying for, just saying that's just not going to get you there.

CVR amp of that output tested was at one or four channels driven at same time or what?

 

[Allen Vos]

Yes, I have read all the posts. That's why I said don't model the sub as if it is in one box in one location, that will yield different results than four single boxes, especially as placed throughout a room. I get what you're trying for, just saying that's just not going to get you there.

CVR amp of that output tested was at one or four channels driven at same time or what?

Of course. I know the software is not meant for that, but I only wanted to see the SPL charts for 1 vs 4 is all.

I was only moddelling 1 because of what TLS had said , so I wanted to make sure and try modelling just 1 to make sure that sub was suitable in a sealed box.

I do remember the amp test and it was with all 4 channels being driven

I had looked into some other amps, the berringer NX6000 and a Sinbosen.

The berringer failed miserbly trying to drive a sealed sub at low frequencies and the sinbosen was only putting out about 75% of what it was advertised.

Everyone seems to love and rave about the CVR amps in the DIY sub builds.

I could go with a quality north american made rack amp, but they are pricey.

 

[lovinthehd]

Of course. I know the software is not meant for that, but I only wanted to see the SPL charts for 1 vs 4 is all.

I was only moddelling 1 because of what TLS had said , so I wanted to make sure and try modelling just 1 to make sure that sub was suitable in a sealed box.

I do remember the amp test and it was with all 4 channels being driven

I had looked into some other amps, the berringer NX6000 and a Sinbosen.

The berringer failed miserbly trying to drive a sealed sub at low frequencies and the sinbosen was only putting out about 75% of what it was advertised.

Everyone seems to love and rave about the CVR amps in the DIY sub builds.

I could go with a quality north american made rack amp, but they are pricey.

Interesting, just haven't heard about CVR and if you can, would appreciate some links. Haven't dwelled on the avsforum diy board for a long while, built most of my subs 10 years ago now. In any case, I'd still rather run multiple amps Never heard of Sinbosen. Behringer sure, and have not used one of those due sloppy specs as a primary reason, but they bench test reasonably well (but not to marketing spec).

75% of an amp's output in what way? How is the percentage determined? Just not a good way to compare amps (i.e. via "percentage").