what did you do for bracing? and did you double the front baffle?
The in room response will not look like the outdoor measurement. Every room will influence the response of the subwoofer differently and the EQ settings in the VBSS file only provide minor response shaping and largely just correct for the low frequency rolloff the Driver/enclosure normally present. Once placed in room those settings can be changed if it will help flatten the response.I finally finished my near-field Contemporary VBSS build!!
I just need a little help setting up PEQ in NX Edit. I cannot get REW results anywhere close to mtg90s outdoor response below. Maybe this is normal?
My response baseline still has issues after moving the VBSS around as much as possible, but I was able to get it somewhat flat by losing
a few overall db. (It seems that the sofa is what is causing the 50hz dip)
Baseline in Red - PEQ in blue (VBSSs w/1099s)
(LFE crossed @ 80hz, no treble, bass, bass boost, etc on Onkyo 40 Volume AVR, VBSS tune is 20hz by mtg90 on channel A)
I was going to put a low shelf +6db but am afraid that would kill my drivers (xmax)
So instead I used a +10 PEQ @23hz VS a High Shelf @ 30hz to lower 10 Db above 30hz. Was this the right way to do it?
Thank you so much for responding sir. It sounds like I was headed down the right path.The in room response will not look like the outdoor measurement. Every room will influence the response of the subwoofer differently and the EQ settings in the VBSS file only provide minor response shaping and largely just correct for the low frequency rolloff the Driver/enclosure normally present. Once placed in room those settings can be changed if it will help flatten the response.
Your blue EQ'ed response does not look too bad.
Thought I'd share here. I built a modified version of the vbss. Originally I was going to paint it just like a Rubik's Cube but due to WAF concerns I used stained rift sawn oak veneer instead. Powered with a Fan Modded Inuke NU1000DSP. Since I still have rambunctious children I put a grill over the driver even though it's downfiring.
Do you have a link to the gallery? The thumbnail images are really small. Thanks!
I have been lurking here for the past week, reading oh sooooo many posts and viewing all the great builds. I live in Canada and have access to these subs for a better price than the Pa460's, which would cost me $345.42 delivered for 2, vs $269.34 for 2 of the Rockville subs. Will they work or should i just shell out the rest for the Pa460's?
Also I'd bet re-positioning your sub(s) may help with that null (see the subwoofer crawl recommendation). Fingers crossed!
Thanks pops love your hair done today but I will be backSo I fired up REW for the first time to run some measurements on my pair of VBSS tables. I really shouldn't have. Now I want two more...
I've so far been fairly happy with the performance. I fired up a 40Hz sine wave and walked around my room for the first time last night and realized my MLP is in a void and there is a really large summing point (is that what you call it?) about half way between my MLP and my screen. In that zone, its a LOT louder (I didn't take measurements there yet).
Any thoughts? Yes, 2 more VBSS are already being planned but anything I can do with placement in the meantime? I have a feeling my room is causing big problems. BTW my room opens to two bedrooms and a bathroom to the left, and to an office and the stairs to the right.
Yes it is much less noticeable if I turn down the subwoofer, however then my bass track becomes completely neutered.Does it go away at lower volumes?