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The Official HSU VTF-15H Thread - Page 153

post #4561 of 5105
Quote:
Originally Posted by wleehendrick View Post

You might want to rethink that... with both ports open, you need to be on EQ2. You did read the owner's manual didn't you wink.gif:

NOTE: Never operate the subwoofer with 2 ports open and operating mode switch set to ‘EQ1’, as this may damage the driver and void the warranty



All options are open smile.gif

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post #4562 of 5105
Quote:
Originally Posted by comfynumb View Post

All options are open smile.gif

How about measuring? wink.gif

How have you set up the gain knobs on the duals? Dr. Hsu stated how to gain match earlier in thread so the amp and driver are both operating at same levels.

Many use nearfield placement, might as well give it a try and see what you think.

Delay is on most external eq devices afaik, but trying to set proper delays by ear would be difficult.

If you post a diagram of room and setup with possible placements would probably help others give a recommendation.

Yes changing the frequency response with different tunes and eq changes the sound.
post #4563 of 5105
Quote:
Originally Posted by wleehendrick View Post

You might want to rethink that... with both ports open, you need to be on EQ2. You did read the owner's manual didn't you wink.gif:

NOTE: Never operate the subwoofer with 2 ports open and operating mode switch set to ‘EQ1’, as this may damage the driver and void the warranty



I know I'm one port open EQ1
post #4564 of 5105
Quote:
Originally Posted by Luke Kamp View Post

How about measuring? wink.gif

How have you set up the gain knobs on the duals? Dr. Hsu stated how to gain match earlier in thread so the amp and driver are both operating at same levels.

Many use nearfield placement, might as well give it a try and see what you think.

Delay is on most external eq devices afaik, but trying to set proper delays by ear would be difficult.

If you post a diagram of room and setup with possible placements would probably help others give a recommendation.

Yes changing the frequency response with different tunes and eq changes the sound.



Measuring is next in line, as soon as I get some treatments up. I've avoided this for years but I'd really like to know what's going on in my room.
post #4565 of 5105
Quote:
Originally Posted by Inspector 24 View Post

Tried altering the phase of one or both subs?



No I haven't tried it yet but I'm going to give it a shot over the weekend.
post #4566 of 5105
Quote:
Originally Posted by comfynumb View Post

Hey guys, I have my second sub behind my seating area and it sounds great. My first is on the front wall but I believe because of the way my room is (hallway alongside my RF speaker) my couch is in a bass null. Fantastic bass just not there. Does it make any sense to place both subs side by side behind my couch? Can they cancel each other out that close to each other? Do I set the phase the same? If I do it means they are approximately 6' from the rear wall, not optimal but the one there sounds really good.

Try reversing the phase for the sub behind your seating area, I think the subs maybe phase-cancelling each other.
post #4567 of 5105
Quote:
Originally Posted by Luis5150 View Post

Try reversing the phase for the sub behind your seating area, I think the subs maybe phase-cancelling each other.



I'm going to give this a try thanks.
post #4568 of 5105
Hey guys

Do you think I could integrate an STF2 with a VTF15,and use both?


Or just abandon the STF2?

Shawn
post #4569 of 5105
Quote:
Originally Posted by MGBMAN View Post

Hey guys

Do you think I could integrate an STF2 with a VTF15,and use both?


Or just abandon the STF2?

Shawn

No, don't even try that. Abandon the STF2. When I first got my VTF3, I tried to run the STF2 with it. The STF2 contributed nothing but problems. It's like trying to hear the squeak of a mouse over the roar of the lion. The only time you will ever her the STF2 in that scenario is when its bottoming out and beating itself to death.
post #4570 of 5105
Quote:
Originally Posted by MGBMAN View Post

Hey guys

Do you think I could integrate an STF2 with a VTF15,and use both?


Or just abandon the STF2?

Multiple and dissimilar subwoofer integration is an emerging technology. What we know now makes what we thought we knew just a few years ago look silly. If you want to study up and unravel the controversies and do some experiements, it may be for you!
post #4571 of 5105
Had a setup question. I set eq to 1 , Q to .7 and one port open.

I set my speakers all to small in a 5. 1 setup. What setting on sub to I set for crossover switch and crossover dial.

Thanks
post #4572 of 5105
Quote:
Originally Posted by bad1550 View Post

Had a setup question. I set eq to 1 , Q to .7 and one port open.

I set my speakers all to small in a 5. 1 setup. What setting on sub to I set for crossover switch and crossover dial.

Thanks

Set the crossover switch to out and the crossover frequency to max (the frequency switch should have no effect when the switch is set to out, but I always do it out of habit).
post #4573 of 5105
Quote:
Originally Posted by Tom C View Post

Set the crossover switch to out and the crossover frequency to max (the frequency switch should have no effect when the switch is set to out, but I always do it out of habit).

Thanks Tom!
post #4574 of 5105
My VTF15 is scheduled to be delivered next Monday. I plan on putting it either in the top left corner or behind the plasma. After digging through this thread, I already want a second one. Go big or go home right? Is 2 possible with my room layout? Would a sub in opposite corners (top left and bottom right) or 2 behind the plasma work?

post #4575 of 5105
I think the opposing corners would work good. I would try the single in the back right as well. Going to get more loading from the boundaries there.
post #4576 of 5105
White House Down wasnt as good as Olympus Has Fallen IMO, but had some great LFE.
post #4577 of 5105
Speaking of crossover switch, I just noticed (a few days ago) that my crossover switch was put on 'IN' instead of 'OUT' lol, crossover knob was turned all the way left. Dunno how long this was done for since this room doubles as a play area for my kids (either way my fault) but I did noticed a difference in sound when I switched it back to 2 ports old config to the 1 port config. Played back Oblivion and wow what a difference. If it has been that way the whole time that was my big brainfart of the year. I use Oblivion now for my audio demo and video demo and it is a truly fantastic ear/eye candy.

Yeah Gadget, I did notice a lack of bass from White House down, ok movie but OHF has some awesome bass moments.
post #4578 of 5105
Quote:
Originally Posted by BornSlippyZ View Post

Speaking of crossover switch, I just noticed (a few days ago) that my crossover switch was put on 'IN' instead of 'OUT' lol, crossover knob was turned all the way left. Dunno how long this was done for since this room doubles as a play area for my kids (either way my fault) but I did noticed a difference in sound when I switched it back to 2 ports old config to the 1 port config. Played back Oblivion and wow what a difference. If it has been that way the whole time that was my big brainfart of the year. I use Oblivion now for my audio demo and video demo and it is a truly fantastic ear/eye candy.

Yeah Gadget, I did notice a lack of bass from White House down, ok movie but OHF has some awesome bass moments.



I hear you and you gotta watch other people. Marking the gain control with a little white out is also a good idea wink.gif
post #4579 of 5105
Something I've been wondering about for a while now, how much does the size/capabilities of your main speakers influence the settings on the sub?

ignoring room differences, big speakers can dig deeper and while not needing the extra oomf at 40hz, may benefit from the extended low end response around 20hz of 1 port EQ 1, where smaller speakers may benefit from the increased lower mid bass of 2 port EQ2 to make them sound bigger and fuller.

Has anybody experimented with different sized mains and sub settings?
post #4580 of 5105
I have large towers with horn tweeters and dual 8" woofers in each. I cross em at 80hz. Im of the opinion in an HT setup you should let the 15" sub handle that below 80hz stuff.
post #4581 of 5105
Quote:
Originally Posted by gadgtfreek View Post

I have large towers with horn tweeters and dual 8" woofers in each. I cross em at 80hz. Im of the opinion in an HT setup you should let the 15" sub handle that below 80hz stuff.



Yep, I have full range towers also but why strain them (especially at high volume) when our subs can do it effortlessly wink.gif
post #4582 of 5105
Quote:
Originally Posted by Inspector 24 View Post

Something I've been wondering about for a while now, how much does the size/capabilities of your main speakers influence the settings on the sub?

ignoring room differences, big speakers can dig deeper and while not needing the extra oomf at 40hz, may benefit from the extended low end response around 20hz of 1 port EQ 1, where smaller speakers may benefit from the increased lower mid bass of 2 port EQ2 to make them sound bigger and fuller.

Has anybody experimented with different sized mains and sub settings?

If you have plenty of power for your towers, and they are positioned so they have great dynamic range down to 40 Hz, by all means crossover lower. More often than not, placement of the main speakers are not optimal for bass reproduction, and amplifier power for the main speakers is relatively limited, so you get greater dynamic range by crossing over at 80 Hz.
post #4583 of 5105
I agree. Most of us running nice AVR's, crossing at 80hz makes better sense.
post #4584 of 5105
I think people forget that crossing the mains over at 80Hz is not a brick wall it is a slope as with any crossover setting depending on the brand most are 12 or 24db slope.
post #4585 of 5105
No one ever said it was. But I dont think using 60 or 40 for mains is a good idea unless you absolutely have the right gear. To be honest, 80hz is too low for a lot of speakers, especially bookshelfs. I had to cross my Def Tech pro monitor stuff at 100, which is part of the reason I upgraded everything to Klipsch towers and a big center.
post #4586 of 5105
It sounds like you guys are talking about the LFE crossover? I'm only talking about the interaction only between the mains and the sub with different port/eq settings, though I suppose this assumes mains are running full range, IE set to large.

I do agree smaller speakers don't have any business playing below 80hz with a great sub in the room, but I have large towers that seem pretty capable down to 40hz on their own, this it seems the 2 port mode boosted the bass too much where the mains were already doing enough, so the extra extension of one port mode is awesome.
Edited by Inspector 24 - 11/17/13 at 6:07pm
post #4587 of 5105
Quote:
Originally Posted by Inspector 24 View Post

It sounds like you guys are talking about the LFE crossover? I'm only talking about the interaction only between the mains and the sub with different port/eq settings, though I suppose this assumes mains are running full range, IE set to large.

I do agree smaller speakers don't have any business playing below 80hz with a great sub in the room, but I have large towers that seem pretty capable down to 40hz on their own, this it seems the 2 port mode boosted the bass too much where the mains were already doing enough, so the extra extension of one port mode is awesome.




Do a simple test set the crossover where you want 60,50 or 40Hz and play your favorite bass piece then go back and set it at 80Hz the first thing you should notice is tighter mibass and more dynamics because the mains are not having to do the heavy lifting something the sub will always be better at.
post #4588 of 5105
Yep, I've done all that. smile.gif

The Polk A9's have three 7" drivers each and they're driven by 350wpc from a Parasound HCA-3500 which peaks at 120a/channel, so bass-wise they do pretty awesome in their own I have them set to large and for music rarely use the sub, and the Radio shack meter says they're pretty good down to 40hz.

What I'm curious about is with all the chatter about port and eq preferences if those with larger speakers tend to prefer 1 port like myself, and those with smaller speakers prefer 2 port.
post #4589 of 5105
Quote:
Originally Posted by Inspector 24 View Post

Yep, I've done all that. smile.gif

The Polk A9's have three 7" drivers each and they're driven by 350wpc from a Parasound HCA-3500 which peaks at 120a/channel, so bass-wise they do pretty awesome in their own I have them set to large and for music rarely use the sub, and the Radio shack meter says they're pretty good down to 40hz.

What I'm curious about is with all the chatter about port and eq preferences if those with larger speakers tend to prefer 1 port like myself, and those with smaller speakers prefer 2 port.







I have fairly large speakers Paradigm Studio 100's and it depends on the source but most of the time 2 ports open EQ-2 and Q=.3 and then if content has a lot of sub bass 1 port EQ-1 and Q=.5 all crossed over at 80 Hz.
Thats the beauty part this sub is easy to change configuration in less than a minute you can have tight bass with slam to sub bass shaking your decor.
post #4590 of 5105
Quote:
Originally Posted by Inspector 24 View Post

Yep, I've done all that. smile.gif

The Polk A9's have three 7" drivers each and they're driven by 350wpc from a Parasound HCA-3500 which peaks at 120a/channel, so bass-wise they do pretty awesome in their own I have them set to large and for music rarely use the sub, and the Radio shack meter says they're pretty good down to 40hz.

What I'm curious about is with all the chatter about port and eq preferences if those with larger speakers tend to prefer 1 port like myself, and those with smaller speakers prefer 2 port.



I think the having 1 or 2 ports open may still come down to your room and preference. I know what your saying and theoretically it makes sense. My Revel F-52's get down near 30hz on their own but unless I'm listening to them in 2 channel mode I cross them at 80hz. IMO there's no way even a good tower with triple woofers (like ours) can reproduce that bass like a dedicated subwoofer. That's just me and I understand completely if people like things a different way.
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