This is a single 8inch sub that is given to me.





I tried searching www.kicker.com, and other search engines for "Kicker Competition C8a, etc" and nothing, if you can identify this older 8inch Kicker Subwoofer for me that would be cool. I want to know the RMS Power and Maxx Power so I can get the right amp for it.

Thanks!

 

that's an old school kicker C8

Size(IN.):8"
Impedance(ohms):4,8
MaximumAmplifier Power(watts): 200
Sensitivity(dB1w/1m):88.0
FrequencyResponse(Hz): 30-500
MountingDepth(IN.,MM): 3-5/8,93

(edit: acutally the spec i listed was for the c8d, yours is the c8a. i'm not sure what the difference is, but i'll have to look it up later, if no one else chimes in.

 

I have the same kind of subs, except I have the C-10a. You have the 4ohm model and they are NOT dual voice coils, so they are ONLY 4ohms and not changeable. I notice that you have the two prongs on the back, which is to make wiring the sub to another sub easier (I contacted the tech department of Kicker, and they told me that because I didn't know either). Try going online and e-mail one of the technical staff - they're slow, but you should get an answer to your question in a couple of days.

I'm not sure about your exact frequency response or power handling capabilities, but I've noticed that with Kicker, the smaller speakers have a slightly lower RMS power handling capacity than the larger subs, and they have a higher starting frequency range than the larger subs (I hope that made sense)- but then that's probably true for all sub manufacturers...

Anyway here are the specs on my C-10a (note that mine are 8ohms though). Your C-8a sub will probably have slightly weaker MAX & RMS power capacity and, I would imagine, a slightly higher sub freq. response (~45-500Hz). I have a pair of them, so I have to wire mine together in paralell to produce a 4ohm load on my amp.

125W RMS
300W MAX
Freq.Resp. = 30-500Hz

Hope that helps!

peace2u

 

According to my July/August 1993 CSR magazine, this is what it says about the C8a:

"Features 20-oz magnet; 1-1/2 in. Kapton voice coil. Power handling 200 W rms; FR 30-3,000 Hz; sens 88.6 dB SPL/W/m. Mounting depth 3 3/8 in. Mounting diameter 7 1/8 in...$89."

It also says "Models are designed for sealed enclosures, feature an extended pole piece, and are available with a 4-ohm or 8-ohm impedence."

I also checked my 1991 & 1992 CSR mags and Kicker has C8 subs, but 1993 was the first year to have the "a" designation.

The differences between the C8 and the C8a are that the C8 has a higher sensitivity (95 dB SPL/W/m), a FR of 30-3,500 Hz, and slighty different mounting depths and diameters.

I KNEW I kept those old issues for something!!!!

Tony

 

Sup Orgy'ers, thanks alot for those info. Tony, that is awesome, now to my 2nd question, what type of amp should I get for this? With the frequency you are telling me, it does not sound like the sub will hit low bass does it? I mean my 6x9 Pioneer Frequency Response: 28 - 26,000H, it appears they would hit the bass better than this sub? Or am I wrong on this? SHould this small sub handle the low bass better than my 6x9 with it's FR of 30-3,500 Hz?

 

30Hz is plently low and if you're worried about it not hitting low enough, then maybe you should get a larger sub! In a good box with good amplification it should sound much better than your 6x9s. However, I wonder about the sub's age and how abused it's been. Is there a manufacture date on it somewhere?

I would get a good quality amp with at least 150w output and you should be fine.

Tony

 

Don't quote me on this, but I think that humans can't hear anything lower than 40Hz. I can't remember the exact number, but at 30Hz, all you get is air moving without sound. Get a bass test cd and play a 30Hz track, the speaker will move but you will hear nothing.

Those were good subs back in high school...
Boy I'm getting old...

 

Actually the "average" human can hear down to 20Hz. Plus, even if your sub is playing down to 10Hz, not only will you hear harmonics in the audible range, but the vibrations caused by the woofer oscillating at 10 Hz will shake the car and make plenty of noise, even if you aren't actually hearing the sound waves. I've played many test CDs down to 10 Hz and I can "hear" every bit of it!!

Tony

 

What you would hear is reverb right?

 

Hmmmmm... I think reverb is a term used to describe a sort of echo, right? What I believe someone would be hearing at 10 Hz is nothing more than all the metal, glass, plastic, etc. in your car moving around at 10 cycles per second. If you were to hang that speaker box from a rope in an empty room and play 10 Hz you might hear the motor assembly moving back and forth and maybe the box creaking, but not actually the sound waves from the woofer itself.

Tony