Raising Subs?

I'm running a pair of Tekton 4-10 subs with B&W 802D's and they sound great. The centerline of the upper woofers are around 41" from the floor. 

@hilde45 That was a great thread. Not informative, but entertaining!

@secretguy Thanks. There are bass nodes which are vertical as well as horizontal in the room. Harder to affect with subs, but if it's the silver bullet...

I will probably just stick with "If it ain't broke, don't fix it". 😀

What would those "significant improvements" be? 

I bought a 23' inch tall bar stool to try this out, but the ding dongs at KEF Support sent back my KC62 sub badly packed last night and the sub does not turn on. 

I wanted to see try to reproduce a physical representation of the KEF LS60 speaker, or Baby Blade. There are some photos on the net where people are doing this and also where someone had stacked an LS50 monitor on top of the KC62 sub. I am curious to see what that sound like.

Imo an advantage of using more than one subwoofer is that  you can distribute them far apart and asymmetrically such that each is a different distance from the room boundaries.   The result is a significantly different room-interaction peak-and-dip pattern from each sub, the sum of which will be smoother than either sub alone.

@secretguy ime it is beneficial to distribute the locations of multiple subs in the vertical as well as horizontal plane, such that you get the aforementioned summed-room-interaction smoothing in all three planes.  If you can, I'd suggest raising one sub closer to the ceiling than to the floor, and leaving the other on the floor.  

Duke

subwoofer manufacturer

secret guy

When you say " significant improvements", what exactly are the improvements that you would like to hear? Can you define them please. 

Well I pose this question to anyone. What would be " significant improvements " 

When I had subwoofers in my system the biggest reason for moving them in any direction was to make the response as even as possible in their output band. 

through measuring and listening you find that if they are too close to a wall or other boundary the response might be peaked and have an overly dominant note or frequency.  

moving them away from the bounday is a way to reduce the peak and make the sound more balanced.  

raising the subwoofers off the floor could be a way to make the response more even, especially if your room and furnishings put limits on how much you can move them away from vertical boundaries.  remember, the floor is a bass reinforcement boundary. 

Re "significant improvement"... I really can't say because they generally are working well as is. You know how it is...always looking for something better.

The idea of smoothing  out nodes further is appealing and I may try raising just one to see what happens.

Thanks, everyone,

I tried a half measure by putting a pair of KEF KC62s atop a pair of unused Velodyne HGS-10s. I didn’t care for the effect. Maybe because the KEF app that so carefully integrates the KC62s with the lS50 Wireless IIs has no provision for height.

I have tried this with one and two subs to reduce a vertical room mode. It partially worked, but as usual other frequencies that I worked hard at to get just so were compromised. 

Well something better might just be pair of speakers that make you forget about the bass. 

what if there is one sub? Raise or not raise?

sounds_real_audio

838 posts

12-06-2022 at 05:42pm 

Well something better might just be pair of speakers that make you forget about the bass. 

You seem to not understand how speakers and rooms work.