Contour Enthusiasts Group Archives Forums Modifications Audio Sell my Alumapro or no

No, this is not a for sale ad.

I currently have 1 10" Alumapro Alchemy. I am looking to make my system a two sub system. It seems for the same price I can buy a new subzone box and second 10" alchemy that it would cost to buy a subzone box and 2 new 12" daytons. Honest opinion, which would sound better. I listen to a variety of music; classic rock, modern rock, techno/rap sometimes. I want subs that are versatile and can handle the different genre's of music that I listen to.

On a seperate note, is there anyway to use a 4ohm driver in a home setup?

In all honesty, I think the Daytons would equal the SQ of the Alumapros. They are also one of the most versatile speakers available. They would have much more output as well.

Yes a 4 ohm sub can be used in a home system, providing that the amp is able to drive a 4 ohm load. What are you thinking about doing?

I was thinking, if I was going to spend the money anyway, I might as well find an amp that can drive the Alchemy and use it at home. It is definitely a capable sub, and would sound good in a home system, am I correct?

the truth is... the subwoofer has very little to do with the sound you achieve from it... the set-up actually says more about than the sub itself. The sub determines the performance of the set-up... If you want a sound that is smooth and rangy go for a venter sub box... if you want more boom for the buck go for the sealed box set-up... if you don't have a crossover and just wants to have a nice sounding box, go for a isobaric box... just check the thiele-small paremeters for your sub and choose the one that matches you speaker... hope that helps...

I think you got a couple of the terms messed up. Typically a sealed box is the "smoothest" as the cabin gain of most cars is very similar to the rolloff of a sealed sub making freq response down to 10-15 hz pretty easy.

Ported boxes on the other hand can sound good, but are difficult to build correctly and tend to create a hump at the tuning freq in a car. EQing can help smooth they hump. The ported boxes biggest advantage is that it can be louder than a sealed box with the same input power.

I believe you meant bandpass, not isobaric. While the box does effectively cut out the mids from the subwoofer, the sub is still playing it and it can color the midrange of your system, as well as creating some nasty peaks in the response.

Isobaric boxes can utilize any of the above mentioned designs, but couple two speakers together to allow for an enclosure half the size necessary for one speaker. It's advantage is space and in some applications the elimination of 2nd order harmonics, but it sacrifices effeciency.

But, I think David L may have known that so i'm sorry for messing up your thread!

Yes, it should work quite well! use this amp. i'll recommend and enclosure in a little bit. http://www.partsexpress.com/pe/pshowdetl.cfm?&PartNumber=300-793&DID=7

It looks like a 3 cubic foot box tuned to 20 hz would work pretty well. It would require a 4inch port 20 inches long. Being in a dorm or apartment may help things out for you. You could build a long enclosure 1' x 1' x 3' and fit that port with no problem. Maybe even make it thin enough to fit behind a couch or under a bed. A little vibrating under the bed may convince the girlfriend that it's a good idea!

I agree Dave. Two of the DVC's in a 1.2cu ft sealed stuffed box will provide a lot of good sounding bass.

I have 2 15" DVC's (each 4ohm)in my home setup and I'm just using an old receiver for now to power them. Those PE plate amps are super cheap.