Ok heres my dilema. I own a pretty nice Aura 6 channel amp that is rated at like 60 RMS x 6 or something. Now this is not enuff to power a sub , even bridged. Plus I really dont want to spend the money on some big subs.

What im considering is the aura bass shakers, as the "pro" models handle 50 watts RMS . Has anyone ever done anything with these , I mean its good in theory, but ive never felt them or anything. So if anyone has experience or knowledge of them ,pls post

Nate

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Red 89 Trans AM GTA
T- tops

Engine stroked to 383ci
World Products heads
Elgin cam
GM 5.7 rods
Keith Black pistons
2-row timing chain
Mellins Hi-Volume oil pump
9:1 compression
24# Ford Fuel Injectors
Edelbrock TES Headers
hi-flow Catalytic Conv
SLP Stainless Steel Cat-back exhaust system
Torkmaster Torque Converter (2000 stall).

 

Who says it cant power a sub?


That's my current install. It really is a nice amp. Channels 1 & 2 power CDT seperates in kicks, 3 & 4 power coaxials in the sails, and 5 & 6 power the 12" sub. It's not massive bass or anything, but it sure is enough for some people, and enough to get me in trouble. Really, Aura amps are actually a bit underatted, and bridged put out something like 200 watts RMS. That's enough to power an efficient sub. How much bass are you looking for? An efficient sub running off 200 watts will give you more bass than you think.

whole install: http://home.earthlink.net/~gckm7728/car/stereo

- Mike

[This message has been edited by Mike92RS (edited November 14, 2001).]

 

Yea...thats my amp. Even if it can power a decent sub I might want to stay away from them cause I really dont want to pay for a box/sub. I will if shakers are totally out of the question. I mean , ive had good experiance with aura and I think the shakers might be good. But im still waitng for some info to verify that.

 

Well, from what I've heard, Bass Shakers are more for complementing sub(s), instead of replacing them, in enviroments where it's harder to get good bass, such as convertables. You probably would not be satisfied with just shakers and no sub(s). And for the price of shakers ($150 a pair at mmxpress.com), you can get a decent sub, and if you're handy you can build a box for material cost (probably about $20 or so). I've never had any personal expreience with shakers, however, and they can probably be very useful in some installs, but I dont think they were ment as a replacement for subs.

- Mike

 

Well what I was thinking for my final stuff this is what i would have.

Kicks in front with component
6x9s or something for bass in the sails
And the bass shakers for added bass

all of wich would be powered by the amp. Im not really looking for huge bass , just something with a decent low end that you can feel, and also still hear the music.

Plus on ebay you can get the shakers for $65 plus shipping, about the cost of a cheap/fairly good sub.

Nate

------------------
Red 89 Trans AM GTA
T- tops

Engine stroked to 383ci
World Products heads
Elgin cam
GM 5.7 rods
Keith Black pistons
2-row timing chain
Mellins Hi-Volume oil pump
9:1 compression
24# Ford Fuel Injectors
Edelbrock TES Headers
hi-flow Catalytic Conv
SLP Stainless Steel Cat-back exhaust system
Torkmaster Torque Converter (2000 stall).

 

Consider this: Bridge 2 channels and you got 120w RMS. Now consider that many subs have a sensitivity rating of about 87db. I personally think that 120w going to a sub would be quite noticable in a car. However, now consider finding a sub that has a sensitivity rating of 90db. That sub would be as loud as the 87db sub driven by a 240w rms amplifier. 240w driving a sub ain't too shabby. Now, consider putting the 90db sub in a good ported box. This will add another 3db to the output. Another way to add 3db is to douple the amp power. See how this works.

Having a sub with a high sensitivity and throwing it in a ported box would be like having a 480W amp. If you had a normal sensitivity sub and used a sealed box would 480w seem like enough to get the sub moving good?

The point is that your amp can definately handle a subwoofer. Choosing the right sub and the right box is what is going to determine if it loud enough to really shake your car.

(I'm not talking about an SPL setup, I'm talking about an everyday system that will still pound.)

 

When you bridge an amp, you actually get more than the two channels added together, because you're running each channel at a lower impendence. So instead of 60 watts (actually more like 80) at 4 ohms, you get more at 2 ohms, times two. If I remember correctly it's somewhere around 200 watts RMS. The sub I'm using has a sensitivity of 92 db, hence why I can get a decent amount of bass (my sub is actually only rated to 200 watts RMS, althought it can take more), but I've seen even more efficient 12's. BTW, you won't get decent bass from any kind of driver you put in the sails, even if you somehow fashioned subs into them.

- Mike

 

OK this all sounds pretty good and I will probobly go with a sub. But, back to the orig. question , basically its this....I can get these bass shakers for cheap..around $80 for the pair with shipping (this is the "pro" model) . Now really all im asking now is, are they worth it.


Nate

------------------
Red 89 Trans AM GTA
T- tops

Engine stroked to 383ci
World Products heads
Elgin cam
GM 5.7 rods
Keith Black pistons
2-row timing chain
Mellins Hi-Volume oil pump
9:1 compression
24# Ford Fuel Injectors
Edelbrock TES Headers
hi-flow Catalytic Conv
SLP Stainless Steel Cat-back exhaust system
Torkmaster Torque Converter (2000 stall).

 

I cant really answer personally, because I've never used them. But I've heard good things about them from proper installations (complementing a sub), and I've heard of disappointed people who used them without a sub.

- Mike

 

a friend of mine had 2 12in shakers in the back of his blazer and they sounded pretty good, and they were only powered by an american power amp (very cheap). i dont know if thy were the pro seriese or not but they did sound alriht for the price.

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89 Rs camaro
305 tbi
3in flowmaster muffler
manderal bent pipe
no cat

ELECTRONICS

viper alarm
pioneer 4-way 6x9's
15' orion sub in a bandpass box
300x1 kenwood amp
180 watt JVC cd-reciever

 

Mike,

Would you be willing to share the dimensions of your box? I am interested in that setup for my solo.