Cramped odd shaped room sub setup

[FierceTIMbo17]

Well i am kid and this is all in my bedroom

<a href='http://putfile.com/pic.php?pic=6/16906305077.jpg&s=f5' target='_blank'><img src='http://f5.putfile.com/6/16906305077-thumb.jpg' alt='Click to enlarge.'></a>

and i am having alot of trouble getting the right setting for the sub.. i have been playing with it and have the sub set crossover at 100 and gain at about 50% the reciever is set to tower large with crossover set at 90, it is a yamaha 5890 does anyone know a good way to find the right setting without using any instruments?

also do you think "treating" my room would be of any use? thanks

 

[Glenn Kuras]

Well i am kid and this is all in my bedroom

<a href='http://putfile.com/pic.php?pic=6/16906305077.jpg&s=f5' target='_blank'><img src='http://f5.putfile.com/6/16906305077-thumb.jpg' alt='Click to enlarge.'></a>

and i am having alot of trouble getting the right setting for the sub.. i have been playing with it and have the sub set crossover at 100 and gain at about 50% the reciever is set to tower large with crossover set at 90, it is a yamaha 5890 does anyone know a good way to find the right setting without using any instruments?

also do you think "treating" my room would be of any use? thanks

When I installed my sub in my control room I used the ETF software to find the best crossover and position for the sub. It is pretty nice because you can shoot the room in about 5 seconds to see what is going on.
Yes treating the room is always worth it. For your room I would start with the front corners . The more bass trapping you can get into your room the better. There is a point of diminishing returns, but I would think 6 to 8 broad band bass traps would go a long way in your room.

Glenn

 

[bpape]

A couple of things.

1. You shouldn't be using both xovers. Turn the xover on your sub as high as it will go or defeat it and let the xover in the receiver do it's job.

2. When you run the mains as large in the receiver, you're going to get some overlap in the sub and mains which can cause cancellation issues. Even with larger speakers capable of lower frequencies, you'll have an easier job balancing things out if you set the mains to small. That way, you can place them for best imaging and the sub for smoothest response in the room. Trying to do bass with both can make it very difficult to get things balanced and not run into a lot of phase and cancellation issues.

Once you get this straightened out, then absolutely, some bass absorbers will help to smooth things out and control the bottom end decay.

Bryan