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Powering a Passive subwoofer.

Finally completed my prototype DIY sub. Has 2-8" woofs in parallel in a 2.3 cuft sealed box and front firing. I am using an old style plate amp at 70 watts. Sounds ok, but it can be better.

Choices are:
Adire or Kiego? plate amps.
NHT SA-3.
Get an Adcom,Hk or whatever amp with a X-30 box or a auto crossover. Probably get a good price on a used set up.
I would not mind, but what I would really like to try is a Bryston Powerpack 120 and a Marchland crossover. Little too expensive right now.

Any ideas, suggestions or experience would help.
My Audio Aero Prima integrated amp has a pre-out. My main speakers will be used from the AA, not the plate amp or whatever.
Thanks.
eldulcesol
Post removed 
gunbei
2,327 posts
 
Yes, class G amps are capable of putting up big wattage numbers, but they're like cars that put out a lot of ponies but have no low end torque.
eldulcesol OP
197 posts
 
Thanks for the responses, I sure appreciate it. The woofers are Zetagcorp 8" used in there G4 speakers. They have a cast frame, copper magnesium cone and rear vented. I bought these for close to nothing just to experiment with. I have a pair of Kinima G1 which sound fantastic; I just want a little more bottom end. My plan was to make a stereo pair, but the room is to compact for it. The only way to make a stereo pair was to make them 27" high and put my G1s on them. That meant getting rid of my Osiris stands. Not yet.

Well the idea of a class G amp is history, so it looks like getting a AB power amp and a X-30 or auto crossover.

Again, thanks for the responses.
elevick
2,636 posts
 
If you can find a Janis 1/a sub amp and crossover you would be happy. This is quite a clean amp. Only 100 watts @ 8ohms or 200 @4ohms but it extremely tight and by using its built in crossover (they don't get any better), you can blend it with the speakers perfectly. You can find one of these for around $250 if you search.

Janis was created for high end audio, not theater. It performs best from 20 to 100hz. I was amazed with the build quality and heavy guage internal wiring. Currently, I'm using it with Nelson Reed subs and don't even notice that I have a sub in the system-isn't that how it's supposed to work?
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