Bash Plate Amp (1 Viewer)

[Jonathan T]

Hi guys,
I need to get a 500 watt plate amp to power a computer sub I'm building. Parts express has 2 that will satisfy my needs:
http://www.partsexpress.com/pe/showd...number=300-752
http://www.partsexpress.com/pe/showd...number=300-806

They are similarly priced and have similar features, save for 2 points. The bash has infinitly variable phase from 0 to 180 degrees. The Dayton has parametric EQ and a 0 or 180 degree phase switch. I don't know which would be more useful, the highly variable phase or the paremetric EQ, what do you guys think? This will be the deciding factor for me.

 

[John S]

I vote EQ... That is a cool feature to have on your sub for sure.

 

[John Garcia]

EQ is going to be more useful than variable phase. What are you powering with it? I have a 15" with a 350W amp in a big room and it's plenty.

 

[Jonathan T]

2 Koda 8s that I have laying around.

 

[John Garcia]

So how did you arrive at a 500w amp? I read the specs for them and it says Pmax is 150W each, and also has a *NOTE saying that you should be able to achieve max output with less power than that. It looks like a nice driver (xbl^2), but all specs listed showed it to be intended for use in auto sound, not home sound. Fs is 32Hz, and shows it recommended to use a subsonic filter at 30Hz or 25Hz in vented alignments, which means they aren't going to dig real deep.

 

[Jonathan T]

Well, the Dayton plate amp "only" puts out 273 watts into 8ohmns, which is my only wiring option. Also, I'm not purchasing these drivers to use in this sub, I just happened to have them laying around, I purchased them over a year ago but I haven't installed them in any car because of money constraints. I'm only using it in conjunction with my computer, I don't intend for it to be used with a theater system. Plus, all I need to buy is the wood, amp and port, which should be under 300 easily, a pretty cheep sub if you ask me.

Also, I can use this amp later down the road if/when I put these kodas in my car and I get another woofer to use.

 

[Jonathan T]

Ok, final alignment:
Dayton 500w plate amp
17 inch cube
either 25 or 28hz tuning frequency
1 4 inch port (obviously length will depend on the frequency I choose, but the 4 inch port kit from Partsexpress will work for either).

 

[John Garcia]

I don't know if that amp has a subsonic filter, so 28hz might be a better choice so they don't bottom out. Seems like those drivers will give you some nice punch. That't a lot of x-max for an 8" driver

 

[Jonathan T]

Hmmmmm, the manual doesn't say anything about a rumble filter, although I'm not too worried. I won't really be using this thing for anything but music and maybe the ocasional DVD. I'm thinking 28hz is a better choice myself.