The Official HSU VTF-15H Thread - Page 15

I have not heard the Ultra...but I can make an educated approximation saying that an Ultra @20hz tune is like two 3.3 on max output mode, based on output numbers posted at the hometheatershack.(more or less)

So, since the VTF-15H has at least the SPL of two 3.3 in max output mode...I think the Ultra vs VTF-15 H is a close match in SPL.

However, in SQ, if the Ultra at its ported tune is as good/tight as the ported VTF-15H, then that would surprise me...

I have both set at 1 port opened, eq2 and Q at 0.5 right now and I really like the sound for both music and movies. I havent tried max output yet. I did try sealed and I find 1port open is more versatile so far. The vol is at 9 o'clock and lfe at -5 on pre/pro.

When you try maxoutput mode with two ports open, you won't come back to 1 port open...
Try 2 ports open, with Q@.7 on both, and call me in the morning...

I'll try that later on!

i was thinking about the above statement and in my mind this is very hard to believe and come to grips with...... you are basically saying to me that it takes 4 subs to best this one sub. IMO this obviously would be a "crazy" (i put crazy in brackets because i am quite sure they had a team of persons who have thought through the revenue process way more than i have) marketing move for HSU cause

1 VTF = $879
2 VTF3.3 + 2 MBM = $2,256

HSU is practically cutting out quite a bit of money out of their revenue stream and also leaving inventory on hand which means it can become obsolete. Now i know most people here are engineers and whatever but i am an accountant and it just does not seem prudent to do such. A person buying a 3.3 would just say "What the heck, let me put $200 more and get a beast of a sub" or "why buy dual MBMs if one VTF bests them". i just can't see this UNLESS

1) The parts from the old stock can be re-used
2) The costs to get rid of the old stock can produce a break even point of the inventory
3) Cost of producing the new sub is way lower than producing the old subs

i can go on with possibilities but wont (simply because i havent seen much "cost accountants" in here) due to certain reasons.

Wish i could talk to Pete via telephone to see what their strategy really is (or was).

I know persons will say that ported is different to sealed and everyone has their own agenda but to put this realistically, we buy subs for bass and if one sub is producing more bass than another for the same price point MOST (notice i said most) of us would go with the cheaper one. I think it is mainly the more anal persons who buy subs like the paradigm sub 2 (MSRP $8,299) just to match their speakers when we all know that they can get way more performance for less. IMO this really puts SVS in a bit of a jam. IMO Ed would need to come up with a product as good as or greater for the new folk who have not committed to any ID company and are getting into audio.

We here in Barbados are all about the newest fad for the cheapest price and i am sure most of the world is like that so i just cant see a person now getting into audio buying one SVS PB13 Ultra for the same price they could get 2 VTF15H.

Just my 2 cents........i guess i'm just hating on persons with a VTF

I've been sold on two plugs, EQ1 and i'm still playing with Q.

I was graphing last night from 10hz to 91hz using a pencil,paper and my digital SP.
I set the AVR volume to 70db (my avr crossover is 80db). It's my first time doing this so I can't even say i'm doing it right. Do you think posting the results would be of any interest?

Holy ****! You are not kidding, it feels like the house is gonna collapse!! I'm going to try this on some movies now.

I'd be interested to see them.

I've been waiting for graphs in this thread. Just any numbers with something to easily back them up...

Well since you seem to be such a disbeliever you can have one I did with my BFD, HTF spreadsheet, and RS SPL meter.

It's with 2 ports open, EQ2, Q=0.5. I use 1/6th octave sine waves from HTF and because they are sine waves they can heat up a drivers coil at high SPL so there's no way I'll make plots at a high SPL. As you can see with Q at 0.5 I'm pretty flat down to 16Hz. My 1 port open, EQ2, Q=0.7 graph is similar except it's flat just below 12Hz.

My hand graph. lol

Volume lvl 70db/ avr set to 80 crossover/ 15 feet from sub
Sealed EQ1 Q=5

The shape and size of my room in a really rough drawing.

It looks like you have a null at around 25 and 75. Do you have an external EQ? Also if you like I can send you the HTF spreadsheet. You just plug in the numbers and it automatically adds in the RS meter correction values. I've modifed the HTF spreadsheet to read down to 10hz since it normally only reads down to 16hz.

No EQ and i'm using a Scosche SPL 1000 meter. The spread sheet sounds handy.

Unfortunately it only has the correction values for the radio shack meter so it won't work withe Scosche meter. Looks like you did a good job taking readings.

I did the exact same thing the other day manually using the same Scosche boomstick. I did it my pencil but I can do it up quick on paint and post it up too so someone that knows how to translate can tell me whats wrong with my room and if I really need a sub EQ.

Yeah...sure post them! I want to see them.

And thanks for taking the time!

Alright well going from the Hsu Manual and also using the Realtraps test tones I set my Scosche SPL meter at 80dbs @ 50Hz. My sub is set up at 9'o clock and -7 at the receiver and these were taken with both ports open EQ2 and Q at 0.5. I have the Phase at 180 since it was a bit louder and a bit more even that way. All from my main listening spot which is approx 8ft from the sub. Took awhile but I did it as best as I can and don't know for sure if I did it right..

What does this say about my room? Because of my room and the size of the sub I cant really put it anywhere else. It's a 17L x 14W room with 7-1/2ft dropped ceilings open on the left side to another room about the same size.



Would a sub EQ help alot? Thanks.

It's actually not bad. You have a house curve without even using an external EQ. If you had an EQ you could have it flat at the 75db line from 16Hz to 71Hz You have a room null at 80 Hz but no big deal there.

Try different Q settings. I've found a different Q setting can flatten out the response in the 25-50Hz range.

BTW take a look at my chart in post #431. Mine was similar to yours and using the BFD I was able to get it pretty flat from 16-80 Hz.

Thanks I guess that's good to hear.. I have been looking into sub EQ's but with 4 young kids I was just able to do this chart before the wife asked when I was gonna be done playing with my new toy.. Seems like alot of work. I did play around with all the ported modes and the Q settings but only had time to mark points on this one. It sounds good but makes me wonder what a sub EQ would do for it. What I do know for sure is that around that 20-25 range it did fluctuate a bit but it was always reading high no matter what settings. I noticed that right away so I played around with that range more. I read that the Antimode 8033 is just a set it and forget it deal so with 4 kids that might be best for me. Just not sure if it would be worth $350-400 here in Canada.

I see your point....(and agree for the most part)

The MBM is not a sub, its a "small" powerful midbass/upperbass box. So, it is really an option if you have size constraints, or if you sit very far from the listening position,etc...

I just think that the VTF-15H is not for everyone.(because of its size)...Here in the forums we want loud/low distortion/musical subs.... But for the mass I think they just want a sub that has gives them balance (some bass/punch, and good WAF....)

Clients need different options, for different needs...There are people who won't mind having 3-4 subs in a small room, and there are some people who will...

Anyway...I really think that per dollar, it is the best value of the lineup...

Sweetheart, asking for numbers is not disbelief. However, thank you for the graph.

The sensitivity of subwoofer posters will never cease to amaze me.

I'm not your sweetheart.

Maybe you can point to a post of mine in this thread that makes me a disbeliever, as you claim. Did I not, in fact, say I was considering purchasing two of them? Is asking for numbers of these better than Heaven claims not me just being a conscientious buyer?

I'm quite happy with my single Ultra, so I'd like to see proof that I should upgrade to two of these. Forgive me if I don't have as much money as you to waste on subwoofers. Personally, these days, every cent I have is gold to me. I simply like to have as much information as possible.

cacihome, I think you're right. Many of the people I work with would never want a sub as large as the 15H. Those same people also wouldn't spend $879+shipping on a sub and don't want really low bass at loud levels. That should leave room for the other subs in Hsu's line.

That is exactly my experience as well with my friends and co-workers...

I was describing the feeling and sound of the 15H to a few people at work and they all said I don't need anything like that. One guy actually said bass like that can stop your heart and crack your walls. That's when I knew it was pointless.

HAHAHHAHAH
Yeah, remember...we are the crazy people...HAHAHAHAH

I think I'll go buy a defibrillator

Those ppl who won't spend 879 plus shipping for a sub won't pay 629 either so those are not the people that I am talking about. I am talking about persons who are "serious" about audio not people who just want surround sound because it looks cool. Persons that are serious would really consider the VTF as much people here are doing because of the value it gives. Does the 3.3 give that value? IMO it can't because it takes 2 of them plus an MBM just to reach the output if a single VTF. So is that an equal value? No it is not that's all I am trying to say.