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      09-01-2010, 04:10 PM   #1
Jules-B
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Drives: Autovogue 335i
Join Date: Feb 2010
Location: Herts

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Question 2 or 4 ohm Earthquake SWS-8?

Hi.

I cant work out if i need 2 or 4 ohm earthquake sws8 subs.
My set up already is

Alpine headunit with 2 phono/RCA outs, With a JL audio G6600 Amp.
I have the 'front' out on the headunit split at the amp to power the front and rear speakers, The Rear out is going to the Sub channel.

I ran seperate speaker wires to the stock subs.I want to change the underseat subs to the Earthquakes to run as mids,and then add another amp and have another 10 inch sub in the trunk. The specs of the amp are here.
Hope you can help.

Rated Power 14.4 V Stereo: 75 W RMS x 6 @ 4 ohm 100 W RMS x 6 @ 2 ohm
Rated Power 14.4 V Bridged: 150 W RMS x 3 @ 8 ohm 200 W RMS x 3 @ 4 ohm
Rated Power 12.5 V Stereo: 55 W RMS x 6 @ 4 ohm 75 W RMS x 6 @ 2 ohm
Rated Power 12.5 V Bridged: 110 W RMS x 3 @ 8 ohm 150 W RMS x 3 @ 4 ohm
THD at Rated Power: <1% THD, 20 Hz - 20 kHz
S/N Ratio: >104 dB referred to rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Frequency Response: 10 Hz - 25 kHz (+0, -1dB)
Damping Factor: >200 @ 4 ohm per ch. / 50 Hz >100 @ 2 ohm per ch. / 50 Hz
Slew Rate: ± 22V / µs
Input Range: 200mV - 8V RMS
Dimensions (L x W x H): 17.70 in. x 9.25 in. x 2.50 in. 450 mm x 235 mm x 63.5 mm
Description: Class A/B Six-Channel System Amplifier
Patented Technology: Absolute Symmetry™ Class A/B Circuit (U.S. Patent #6,294,959)
Differential-Balanced Input Topology: For superior noise immunity, RCA jack inputs
On-board Crossover: State-variable, 12dB / octave Butterworth with continuously variable cutoff frequency selection from 50 - 200 Hz. Configurable as Low-Pass or High-Pass
Bass EQ (Channels 5&6 only): +6 dB fixed frequency, fixed 'Q' (defeatable) with port for optional remote bass control (RBC-1)