Eh hem!...Subwoofers... What do ya know?


Subwoofers are a thing.  A thing to love.  A thing to avoid.  A misunderstood thing.  

What are your opinions on subwoofers?  What did you learn and how did you learn it? 


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Showing 6 responses by m-db

millercarbon2,139 posts12-06-2019 9:01pmAlmost everything people "know" about bass is wrong.
Location with one sub is everything. You can spend a lifetime moving here and there trying in vain to find the magic location with smooth bass. 
Do you have any experience using the Crawl Test for anybody locating less than four subwoofers?

I could go on and on. Which I tend to do, both because this is so important as well as its really hard to understand. Took me a few weeks of research to really be sure myself.
Thanks for sharing your knowledge. How would you determine crossover frequency and gain with less than four subwoofers?

Validation? Nope, If you're happy, I'm happy.
I'm interested in subwoofer variable crossover control methodology.

Thank you Miller and Elliott for taking the time.    
gochurchgo, here are some starting point guidlines for a speaker placement and a youtube for the Crawl Test subwoofer placement. Since not every room has four corners, mapping out your rooms bass modes (where bass is louder) can be very usefull. 

http://www.cardas.com/room_setup_main.php

https://www.youtube.com/watch?v=AV3oLLMgS-M

Not every speaker system was designed to be toed in.
Subjectivity and personal taste aside, clearly there are those who simply haven't experienced the advancements of current Extra Low Frequency implementation and/or software design.

Even if your speakers are equipped with built in self powered subwoofers, in all likelihood those subs are not optimally placed within their environment to take full advantage of their integrational and presentation potential. Which is why their manufactures often demonstrate them in conjunction with outboard subwoofers. 

Wilson, Magico, Focal, etc. all produce subwoofers. Its not the novelty of loud bass. Its advanced adjustability of multiple ELF parameters and thier programable control. 

redmosessc10 posts12-16-2019 11:35amEverytime i hear a rig with a sub for 2 channel, i can HEAR the subwoofer, its not a balanced / natural tone to my ears. I know this can be tweaked but i have yet to hear one that i liked. Golden Ear, Martin Logan and other speakers that have self powered subs do a better job at integration than an external unit but i still always HEAR a sub in the room. I do have a sub for cinema but when listening two channel i prefer a passive speaker configuration.

I agree.
 
Speakers with built in subs can have better speaker to sub integration. Unfortunately optimal speaker locations may be a poor choice for subwoofers with extra low frequency capabilities exciting a rooms bass modes and nulls. Raising the speaker subs low pass filter helps but defeats the subs capabilities of producing a surprising amount of recorded ELF.  

Multiple stand alone subs can reduce or eliminate room interactions but that's only one aspect of subwoofer integration. Unless there is some means of comprehensive multi-band parametric frequency equalization, Q, and gain control through the crossover region without using high pass filtering, matching the stand alone subs to the speakers presentation is impossible.
An alternative is to select a hard crossover point and reduce the gain until the subwoofers noticeability is reduced which many consider state of the art. Its not.
hifidream, did you have a chance to compare the Mini DSP / Earthworks with the Ultra's processing and use its three presets? I'd be interested to hear your opinion regarding their degrees of adjustability and ease of use.