Down the Rabbit Hole

[9397SVTs]

Audyssey only.everything in the sub is turned off.

 

[Pogre]

Ok. This should do it.

View attachment 38292

Okay, that looks like no smoothing, which is good imo. Really let's you see what's going on. It looks like your baseline or goal is 75- 80 hz? If that's the case then you can do mostly cuts to flatten that out. That one sharp dip will likely disappear with some mild smoothing.

 

[Pogre]

Audyssey only.everything in the sub is turned off.

I'm sorry, but you gotta refresh my memory I forget which sub you have. Is it a HSU VTF3 MK5? If so HSU recommends running room correction in EQ1 with 1 port open.

 

[9397SVTs]

Yes. No smoothing.

2 SVS SB4000's

 

[Pogre]

And I hate to do this to you but I'm gonna be busy for the rest of the night starting soon so I'll probably not be able to get back to you tomorrow. Let me just say that you are on the right track, you figured out how to do a successful sweep and it looks right. Your bass response could use some work, but it's not too awful bad. I think you're going to realize some nice improvements.

 

[9397SVTs]

No problem. I need to figure out this last Adobe download so I can hook up the miniDSP and start screwin around with stuff.

 

[mazersteven]

2 SVS SB4000's

There is the Problem. You need 2 of these to Correct everything LOL

PB16-Ultra Subwoofer | SVS

Earth-shaking levels of bass far below human hearing limits, yet incredibly accurate, detailed and controlled.

www.svsound.com

 

[9397SVTs]

There is the Problem. You need 2 of these to Correct everything LOL

PB16-Ultra Subwoofer | SVS

Earth-shaking levels of bass far below human hearing limits, yet incredibly accurate, detailed and controlled.

www.svsound.com

I almost got those, but thought that they wouldn't sound as good as the SB4000 with music. My main use is music and when we watch TV, the subs aren't even on.

Considered the SB16 Ultra also.

 

[mazersteven]

I almost got those

LOL

 

[9397SVTs]

Yeah, I know.

I replaced a single Focal Chorus SW 800 V sub with these 2 SB4000's. Not only was it a change in performance, it was a big visual change.

To be honest, I'm really happy with the choice I made. When you factor the size and scale of the other speakers, they are big, but not over done. It looks appropriate.

 

[Pogre]

The 4000s are awesome subs. I'd love to have a pair of them, tho I think the PB16 would be just as good for music as any well built sub design.

 

[9397SVTs]

Unfortunately, my laptop is not compatible with the Adobe Air program that miniDSP requires. My laptop (Windows Vista) is simply too old.

I'm frustrated that this simple upgrade is costing me more than expected. I didn't dig deep researching this before going this route, so it is my fault for not making sure my laptop was compatible.

I only use my laptop for paying some random bills, checking banking records, and limited web surfing/purchasing. It works, so I've had no reason/desire to replace it.

Looks like I'll be buying a new one.

 

[9397SVTs]

During this down time, I think I'll play around with the 3 PEQ settings on the subs and see what can be accomplished.

Will using these PEQ's cause a problem with Audyssey? Do I run Audyssey before or after?

 

[lovinthehd]

During this down time, I think I'll play around with the 3 PEQ settings on the subs and see what can be accomplished.

Will using these PEQ's cause a problem with Audyssey? Do I run Audyssey before or after?

Usual recommendation is to set subs up as well as possible for delay/eq then run Audyssey to integrate.

 

[9397SVTs]

Ignorance is bliss. Starting to regret this adventure.

I was up for hours last night messing around. I keep having problems with getting tones to the AVR.

I was able to make some changes.

Today, I moved the FL sub to the spot between the sofa and end table. Couldn't get measurements, because of no test tones.

I did play some music and noticed a definite difference. The bass lost its punch. It was there, just thin.

This got me wondering if 2 channel stereo and HT require different approaches to the set up. Music should have the speakers/subs up front, just as it's produced. HT can and should be immersive, which requires speakers/subs surrounding the listener.

Does this make sense?

 

[ryanosaur]

Ignorance is bliss. Starting to regret this adventure.

I was up for hours last night messing around. I keep having problems with getting tones to the AVR.

I was able to make some changes.

Today, I moved the FL sub to the spot between the sofa and end table. Couldn't get measurements, because of no test tones.

I did play some music and noticed a definite difference. The bass lost its punch. It was there, just thin.

This got me wondering if 2 channel stereo and HT require different approaches to the set up. Music should have the speakers/subs up front, just as it's produced. HT can and should be immersive, which requires speakers/subs surrounding the listener.

Does this make sense?

With Low Frequencies and Small Rooms (pretty much any room in a house is considered small, compared to the size of LF SoundWaves) you discovered the catch to placement. Every room has its own acoustic Modes. where a Sub is placed will affect how the room resonates. If the Sub is in a poor place, then bass can almost completely disappear. Corners are notorious for amplifying Bass, but can also make it Boomy or Muddy.
The Sub crawl is a crude yet effective technique for helping you understand where a good home may be for the Sub(s).

Crawling for Bass - Subwoofer Placement Tips

Do the Subwoofer Crawl. It's the easiest way to find the proper placement location for your subwoofer to get the best performance and sound.

www.audioholics.com

If you do this exercise, you can learn a lot about your room and the way LF Acoustics work. You do not necessarily have to but the Sub in your seat, but some do.

 

[mazersteven]

The Sub crawl is a crude yet effective technique for helping you understand where a good home may be for the Sub(s).

Crawling for Bass - Subwoofer Placement Tips

Do the Subwoofer Crawl. It's the easiest way to find the proper placement location for your subwoofer to get the best performance and sound.

www.audioholics.com

If you do this exercise, you can learn a lot about your room and the way LF Acoustics work. You do not necessarily have to but the Sub in your seat, but some do.

He's got Dual Subs. Isn't the Crawl for Single Subs?

 

[ryanosaur]

Oh, BTW, friendly disagreement with your assertion that HT and Music should be treated differently. Some do, true, but Sound is SOUND! The acoustics of a room don't behave differently between a bass drum and an explosion.
My room is dual usage, but 90-95% music. My Subs were placed using the Crawl, and are asymmetrically placed on the side walls. I do have a small room, but the idea can be applied anywhere, pretty much. If you want to dig deeper into competing theories, there is the Welti/Devantier approach which focuses on pairs of Subs in regular positions (ie front wall, corner loading, 1/4 wall, opposing corners... etc...) and the Geddes approach.
I am a big fan of Geddes' technique which encourages strategic asymmetric placement of the subs and keeping them off the front wall. If you have capable towers, and especially full range towers, then they are already emitting some LF content, even with an 80Hz XO. By finding the best places for the Subs in your room, you can have 3-5 LF sources that are all triggering different room modes and working in concert to level you LF performance in-room.

Have fun!

 

[ryanosaur]

He's got Dual Subs. Isn't the Crawl for Single Subs?

When I did mine, I looked for the best three places for subs... put my two subs in two of those spots, tinkered a bit with final placement...
INCHES MATTER!
(Please, Maz, no "that's what she said" jokes! )
And...
I am Happy!



Now, the proof is ultimately, as they say, in the pudding. And Geddes' technique, for example, is based on measuring your placements.
I just got my OmniMic back from Cross Spectrum Labs after an extended Corona-delayed visit. And as soon as I can make the Lady happy by finishing the Honey-Do list, I guarantee I'm gonna get to tweaking the room!

 

[9397SVTs]

Oh, BTW, friendly disagreement with your assertion that HT and Music should be treated differently. Some do, true, but Sound is SOUND! The acoustics of a room don't behave differently between a bass drum and an explosion.
My room is dual usage, but 90-95% music. My Subs were placed using the Crawl, and are asymmetrically placed on the side walls. I do have a small room, but the idea can be applied anywhere, pretty much. If you want to dig deeper into competing theories, there is the Welti/Devantier approach which focuses on pairs of Subs in regular positions (ie front wall, corner loading, 1/4 wall, opposing corners... etc...) and the Geddes approach.
I am a big fan of Geddes' technique which encourages strategic asymmetric placement of the subs and keeping them off the front wall. If you have capable towers, and especially full range towers, then they are already emitting some LF content, even with an 80Hz XO. By finding the best places for the Subs in your room, you can have 3-5 LF sources that are all triggering different room modes and working in concert to level you LF performance in-room.

Have fun!

It wasn't an assertion. It was a thought followed by a question.

I understand the crawl purpose/process. My situation dictates front wall or one specific opposing "corner", which didn't improve sound. So, it will go back to the FL corner. I will just have to do the best I can with the miniDSP.

I'm trying to find the fun in this. The new laptop should eliminate any hardware/compatability problems.