Originally Posted by ousooner2
A room with no furniture, carpet, nothing on the walls, etc will create problems for any speaker. I wouldn't judge speakers costing 100x as much as these EMP's in a room like that
- Large or Small speakers?
* Some people have used them set to large w/ a sub, but I set them to small with a sub crossed at 80hz (wish AVR's would give you more frequencies to cross at than just the typical 40,60,80,90, etc)
- LFE only or LFE+Main if I configure the speakers as Large?
*LARGE - speaker plays full range signal
SMALL - speaker only plays signal above it's crossover setting
LFE = sub only plays LFE signal and from speakers set to SMALL below their crossover
LFE+MAIN = only applies when front main speakers set to LARGE. In addition to what the LFE setting does, the sub also plays the frequencies below the front main crossover setting (while front mains play full range signal). This setting is known as the "double bass" setting as the front main low bass frequencies are being played by both the front main speakers and the sub as well.
However, when using a sub, you should set all speakers (regardless of physical size or mfr recommendation) to SMALL with a minimum of 80hz crossovers. Doing so it doesn't matter what the sub setting is LFE or LFE+Main , the result is the same.
- What's a good crossover to start with? 80Hz?
* 80hz is generally considered a good point to start. Sadly, like I mentioned above, there isn't many points to set a crossover in most AVR's. It's usually 40hz/60hz/80hz/90hz/100hz/etc. 80hz is most recommended because:
1. top end falls off in most HT subs (ported at pretty low tuning frequency)
2. Resonance can be heard higher up
3. Being able to locate the sub becomes easier the higher the x-over point
There's others..and each or all of these don't apply to every sub
- Is the sub volume in the middle reasonable or lower?
* What do you mean 'in the middle or lower'? Are you talking about the gain knob on the back? Technically that's not a 'volume' knob, but what you'll want to do is to run your room correction (just do it once..aka one mic position) until you get it to come back and say the sub is within a range of -3dB to +3dB. Anything negative (-XdB) means the the AVR is trying to cut the signal to the sub -xdB since the gain knob on the back is too high. Anything positive (+XdB) means the AVR is trying to send more voltage to sub to offset the gain on the back of the sub being too low.
It's been found that most room corrections can be funky with the sub when the range is outside of that -3 to +3 range so it's best to try to get inside that
Thank you for your detailed reply.
Yes, by sub volume I meant the gain knob on the back. I have an SPL meter from Radioshack from a few years ago and if it still works, I can run a quick test to get the sub aligned with the speakers as a starting point for Audyssey.
I should also mention that the living room area where the setup lives is all tile (though it will have a rug at some point but not where the sub/speakers are). I read in the sub manual that it should fire on carpet not on hard floors. I suppose I need to source a piece of carpet now or should I instead get an isolation pad such as the Auralex SubDude?
The acoustics of this room turn out to be a pain, as it's a very open floor living room area