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How to fix a lack of bass Null

Hi
Have tryed tying all sorts of different key words on Audiogon, until to day did'nt relised, that a room could be affected by a lack of bass, from what I read, this call a null, I have tryed different equipment over the last couple of years as I always thought that my equiment was bass shy. I found this programe on Audiogon called Hunecke speaker calulator, not shore if I am using it properly,It shows a big dip @31.5 - 63 hz and could explain a lake of base at my seating position, I cant seem to be able to move the speaker with the cursor, this is suppose to change speaker location and tell you flatess spot I think if I am reading it right? Do I buy a meter and setup disk? what treaments is there for this problem (Nulls), if this is the case?I google with know real answer's!
Room 5.250L x 4.00W x 2.4H
k_rose

Showing 4 responses by magfan

magfan
1,583 posts
 
1. Google room mode calculator. Enter your room dimensions
2. It isn't just front to back or side to side reflections.
There are models which include 2 wall, as above, or 3 or 4 wall reflections. each diminish in importance as wall reflections are added.
3. Sub crawl isn't a bad idea. A little tough sometimes, especially if you have some HUGE sub.
4. Multiple subs. Located asymetrically, they compliment each others peak / null to produce flatter response over a larger area.
5. Experiment.
6. Is your sub out of phase? This can produce this 'suck out' effect you note.

Start changing stuff until you get a result. Even if you KNOW you can't leave it like that, just move things around.
Experiment with speaker placement. READ UP ON THIS.
magfan
1,583 posts
 
Kijanki, you are computing for 2 wall reflection....good start, and the most important.
How about 3 and 4 wall?
magfan
1,583 posts
 
Yeah, that's why I gave up on meters / analysis / test disks and just listen.
You can do about 3/4 of what a consultant can do, for a fraction of the money with only investing time and patients.
Next thing, we'll be talking about RT60 and other phenom.

A good example, kind of OT, is my TV. Yep, I could spend the Big Bucks on an ISF guy to come out and Calibrate, but I can get maybe 3/4 the benefit with the use of a DVE disk (digital Video Essentials)
magfan
1,583 posts
 
I don't think I could pass the physical.
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