Sub recommendations Please

[jaybird]

Hello,
I have just built adireaudio's Shiva EBS aligment subwoofer with a passive radiator. I'm running it with rythmik 350w amp and the passive is weighted to 252grams. The sub has very good response lower than 40hz. My front tower speakers are okay down to 40hz. I want to build a sealed subwoofer that has great response from 40hz to 80hz. I'm not very good at using simulating programs, so any advice or recommendations will be greatly apprechiated. Thanks for your time. Justin

 

[sreten]

So you want to rebuild it as a sealed sub ?

sreten.

 

[kevyjo]

Is the sub not blending well with the speakers? If the sub goes up to 40hz, and the speakers go down to that, sounds like a match to me

 

[Timn8ter]

I've heard good things about Adire's DPL12 being used in a 75 liter sealed box.

 

[sreten]

I've just realised that you want to add another subwoofer
to your system to cover the 40Hz to 80 Hz range.

My only question is why ? I cannot understand why you would need this.

sreten.

 

[leadbelly]

My only question is why ? I cannot understand why you would need this.

Not only that, with many surround receivers, you cannot do this at all. That is, enabling the sub output forces all bass to the sub and subtracts it from the other outputs, even if you set speaker type to "large".

 

[michael]

why do you want subs for 40-80Hz?
If you are worried about giving your mains too much bass down to 40Hz then set the subwoofers crossover at 60 or 70Hz, you will not notice much difference and you will save yourself alot of money.
but if you are adament on building a sealed sub for the 40 -80 Hz range then u suggest a small sealed enclosue with a 10" driver, it will not go low but it doent need to, but it will likely be very tight, perhaps a peerless XLS 10" due to its very good quality, and remember this driver can go up into midbass and still sound fast.

 

[sreten]

Not only that, with many surround receivers, you cannot do this at all. That is, enabling the sub output forces all bass to the sub and subtracts it from the other outputs, even if you set speaker type to "large".

I was going to get to that if and when there was a reply,
it gets more complicated with a pure hi-fi stereo system.

sreten.

 

[michael]

y not simply use the speaker level filters built into the subs plate amp, so have receiver-->EBS Shiva-->sealed sub-->main speakers
in this situation have the filter on the subwoofer set to 40Hz and have the sealed filter set at 80 or 90Hz. then on your receiver set it to redirect bass to mains as if there was no sub even there.