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I finally added a second REL Sub

It's taken me years to get to this point.  Subwoofers were 2-channel system blasphemy when I was coming up in the hobby.  As of today, I now have 2, REL T9is.  They are providing sub-bass and filling out the picture for Klipsch Cornwall IVs.  Even with a loudspeaker as massive and efficient as the Cornwall IV, they fill things out nicely.  

How pleasing it was to hear the two in unison.  I run them so low on crossover and volume that the only thing you hear is sweeter more extended highs against a fuller picture down low.  They are simply not audible in their own right.  Yes, it's true--good sub bass management helps treble and midrange.  

As a hack musician of 20 years or so, I can tune them by ear when I hear a well recorded kick drum, bass guitar and horns.  I tried tuning with mics and software but the good ol' ear does very well here.  

If you're on the fence about one or maybe a second you owe it to yourself to try it.  Is SWARM next? Doubtful.  This is, however, very pleasing indeed. 
128x128jbhiller
mozartfan
2,143 posts
 
frequency range and volume very low. Just enough to augment the bottom octave, and not feature the subs. I'm only occasionally aware my sub is on.

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No matter how low you set the sub to isolate for voicing only the lows, still you are going to have that boom-boxy sound effect, Subs are for HT usage only. Not  meant for music. 
Dual W18's go to 40hz, but has a  full rick true musical bass reproduction. 
I do not need my bass to go down to 20hz, there is hardly any notes  in that range in my classical cd collection. 
Refer to Troel Gravensens notes on his  dual W18 Nextel  design for bass . 
knotscott
892 posts
 
No matter how low you set the sub to isolate for voicing only the lows, still you are going to have that boom-boxy sound effect, Subs are for HT usage only. Not meant for music.

Not getting any boom-boxy effect below 40hz....especially from a T-line. Boxy sound is typically in the 125-250hz range, and/or is a room effect.
jbhiller's avatar
jbhiller OP
1,367 posts
 
@mozartfan, There is absolutely no boom box effect.  What's more, REL subs are (unless they are HT subs) specifically designed for music.  They are more appropriately sub bass systems.  It sounds like you haven't tried modern subwoofers.   Not trying to be edgy but this is just not my experience or what I think of when I think of modern subwoofers. 
missioncoonery
1,214 posts
 
"I run them so low on crossover and volume that the only thing you hear is sweeter more extended highs against a fuller picture down low.  They are simply not audible in their own right"  ....If i read this correctly your setup is wrong.If you watch the Rel user setup video its explained the sub should cross right under yoir speakers drop off point to make a seemless transition,not set all the way down as you descibe.I suggest trying it the right way and see what you have

golfnutz
231 posts
 
I agree, such a novice approach. Seems like it has nothing to do with the speakers, just integrating the subs to the room a bit. CW has 15" woofer (34hz), and adding 2 10" woofers (28 hz) isn't that big of a deal if you're low on crossover and volume. Doesn't sound like there's much room gain with this approach. You could probably get the same low frequency with the CW using better placement in the room.

What's the point without using measurements to justify the setup (ie REW)? Please don't use the my ear is better excuse, because it isn't.

I'm sure you like and enjoy what you're hearing with the 2 subs, but how much better could it be? At least with measurements you can actually know for certain what the differences are (positive or negative).
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