rx8guy86

I'm getting ready to put a couple subs in my 8. Here is what I'm looking at.

Box- holds two 10" subs


Subs- Two Infinity Kappa Perfect10DVQ
Specifications
MSRP U.S. $: $269.95 each
Power Handling, RMS: 400 Watts
Power Handling, Peak: 1600 Watts
Sensitivity: 90dB
Frequency Response (±3dB): 25Hz - 400Hz
Mounting Depth: 6-1/2"
Impedance: 2 or 8 Ohms depending on wiring



Amp- Infinity Reference Series 611A 600 watt Class D
Specifications
CEA Rated: Yes
Power Output: 456 watts RMS x 1 channel at 4 ohms and ≤ 1% THD + N 657 watts RMS x 1 channel at 2 ohms, 14.4V supply and ≤ 1% THD + N
Signal-to-Noise Ratio: 70 dBA (reference 1 watt into 4 ohms)
Dynamic Power: 761 watts at 2 ohms
Effective Damping Factor: 6.336 at 4 ohms
Frequency Response (-3dB): 17Hz - 251Hz
Maximum Input Signal: 6V
Maximum Sensitivity: 250mV
Output Regulation: .179 dB at 4 ohms
MSRP U.S. $: $424.95


Please let me know how you guys think this would sound/look. Thanks!

dtorre

Subs are ok and if you want the brands to match then the amp is decent as well....but for that price you can get a much better kicker amp for a little cheaper.

Imidazole

Where did you get that box? Custom made?

Rotary Rasp

iTrader: (2)

The kappa 10's are great subs. I have a set.

I used to sell infinity audio and would suggest looking at another brand for the amp.

my install: https://www.rx8club.com/showthread.p...6&page=1&pp=40

rx8guy86

Whats wrong with the infinity amp?

rx8guy86

HeRe is the link to the Sub boxes.

Rotary Rasp

iTrader: (2)

Signal-to-Noise Ratio: 70 dBA - Crappy
1% THD - Crappy

You'll be okay, given that both of these don't really matter if you're using the amp for a sub. However, for mids or highs, those numbers are pretty **** poor.

TomAssBender

I miss my old Infinity system (stock) from my Eagle Vision. The stupid Bose system doesnt even come close. sad face

MrWigggles

That is 70dBA @ 1 Watt. At 400 Watts, that 70dBA could easilly be, 70 + 26 = 96dBA, which is plenty good.

The 1% THD number has be seen in similar light. Yes, 1% is rather poor for the entire power range, but that is simply a common industry standard point to rate an amplifier's output. So the amp could very well be 0.01% at 400 Watts. Many times you will see multiple ratings for an amp: "0.01 THD at 100 Watts. 1% THD at 125 Watts." Or better yet you will see a graph.

Oh, and if you think 1% is crappy then you don't want to know how much THD your speakers actually create by themselves.

-Mr. Wigggles

Rotary Rasp

iTrader: (2)

"that 70dBA could easilly be"
"the amp could very well be"

You're right... however we really don't know because they don't post those specs. I've always been a firm believer in the fact that if they don't post something, it's because it wasn't good enough to advertise.