Is this amp ok?
 

Ok. I think I'm ready to purchase an amp for my my system, but would like to get your opinions on this one. I want to push about 400-500watts to my 10" L7 solo baric. Here are the specs of the Alpine MRV-T420

Key Features
• Max Power (EIAJ) 225Wx2 (4ohm; Stereo) 600Wx1 (Bridged 4ohm)
• 12V RMS Continuous Power 4ohm; Stereo (0.08% THD) 75Wx2 2ohm; Stereo (0.3% THD) 120x2 Bridged 4ohm; (0.3% THD) 240x1
•14.4V RMS Continuous Power 4ohm; Stereo (0.08% THD) 110Wx2 2ohm; Stereo (0.3% THD) 170x2 Bridged 4ohm; (0.3% THD) 340x1
• Bass Engine®
• S/N Ratio 100dBA
• Frequency Response: 10-50kHz
• 12dB HP/LP Crossover
(30-400Hz)
• Bass EQ Circuit
• Extra Large Gold Plated Terminals with Wire Insert Capability
• Top Panel Power LED
• 4 Volt Input Capability
• Continuously Adjustable Crossovers
• DC Straight, STAR Topology
• DC-DC/PWM MOSFET Power Supply





Features:
General-Amplifiers

2/1 Channel Operation
Adjustable Crossover (LP)
Auto Overcurrent Protection
Bass EQ Circuit
Bass Engine®
DC Straight Design
DC-DC PWM Power Supply
Discrete Pre-Amp Stage
Gold Plated RCA Input Connectors
Input Mode Selector Switch
Integrated Wire and Mounting Screw Terminals
MOSFET Final Outputs
MOSFET Power Supply
MultiMode
Noise Elimination Coil
One side Terminal Layout
Phase Selector
STAR Circuitry
Solid Copper Bus Bars
Top Mounted Blue LED Power/Status Indicator
Specs:
General-Amplifiers

Dividing Network : 15Hz-400Hz HP/LP/BP (12dB/oct)
Foot Print (WxHxD)in : 11-13/16” x 2-3/8” x 12-7/16”
Foot Print (WxHxD)mm : 300mm x 60mm x 315mm
Frequency Reponse : 10Hz-50kHz (+0,-1dB)
Heat Sink (WxHxD)in : 9-7/8” x 2-3/8” x 12-7/16”
Heat Sink (WxHxD)mm : 250mm x 60mm x 315mm
Input Impedance : 10k ohm
Input Sensitivity (for rated power) : 0.2 V to 4.0V
Power Requirements : 14.4V DC (11V to 16V)
Signal to Noise (S/N) : 100dBA (referenced to rated power)
Slew Factor : greater than 5
Speaker Impedance : 4 or 2 ohms(stereo), 4 ohms(bridged)
Weight : 4.2kg(9lbs. 4oz.)
MAX Power (at 14.4V,EIAJ)

Bridged 4 ohms : 600W x 1
Per channel into 4 ohms : 225W x 2
RMS Power (at 12V,20Hz-200Hz)

Bridged 4 ohms : 240W x 1
Per channel into 2 ohms : 120W x 2
Per channel into 4 ohms : 75W x 2
RMS Power (at 14.4V,20Hz-200Hz)

Bridged 4 ohms : 340W x 1
Per channel into 2 ohms : 170W x 2
Per channel into 4 ohms : 110W x 2





[This message has been edited by Omega9 (edited August 01, 2002).]

I don't like saying this, but ttt http://web.camaross.com/bb/tongue.gif

oh, and my L7 solo baric is a dual 4 ohm

[This message has been edited by Omega9 (edited August 01, 2002).]

That amp won't provide enough power for that sub. You will have to wire it for 8 ohms and that will mean approx. half the rated power than at 4ohms bridged.

Look into something class D like maybe a JBL 600.1 off e-bay.

------------------
'96 Firebird Formula M6
Performance
Custom cut-out, Homemade 4" CAI with 9" cone filter, !CAGS, TB Bypass, Energy Suspension Trans. Mount, Taylor 8mm Wires, Pro 5.0 shifter, LCAs, Stock 3.42 gears
Stereo
Sony Xplod MP450X MP3 Headunit, Sony XE-90MKII Half DIN EQ, MTX RTX01A Crossover, 2 12" Clarions, powered by 2 Bridged Kenwood KAC-728S amps, Infinity Reference Series component set up front, powered by Kenwood KAC-628, EFX 1 farad cap, 4 gauge wire to cap, 10 gauge to amps

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