FlipCpt45

iTrader: (6)

i found a Alpine V12 MRV-F407 at a pawn shop.. fully working and everything for $79.99... but i was looking at a newer model... The MRP-250.

The V12 MRV-F407 has
Output Power at 12.0V (20Hz ∼ 20kHz):
4 x 40W @ 4 ohms (0.04% THD)
4 x 50W @ 2 ohms (0.3% THD)
2 x 100W @ 4 ohms Bridged (0.3% THD)
Output Power at 14.4V (20Hz ∼ 20kHz):
4 x 60W @ 4 ohms (0.04% THD)
4 x 80W @ 2 ohms (0.3% THD)
2 x 160W @ 4 ohms Bridged (0.3% THD)
Freq. Response: 10Hz ∼ 50kHz (+0/-1 dB)
S/N Ratio: 105dBA (at rated power)

while the MRP-F250

RMS Power (at 14.4V THD+N, 20Hz-20kHz)

Per channel into 4 ohms: 40W x 4 (0.08% THD)
Per channel into 2 ohms: 50W x 4
Brigded 4 ohms: 180W x 2

Which one would be best? im looking to power component speakers...

2AZN2DMAX

iTrader: (28)

Get the V12 series the MRV, they have variable crossovers. MRP has fixed crossover points except their mono amps.

FlipCpt45

iTrader: (6)

oh ok, good.. hahah.. i was looking around.. and i saw a JLAudio E6450 6CH.. which i was DEFINATELY going to buy (or put on layaway.. short on cash..) but i tested it in my car.. and it didnt even power on! so i was like damn.. that was a good amp gone to waste.. and then i saw a V12 amp.. and was thinking to myself.. isnt that like alpine's top-of-the-line series..? and i put it on layaway.. it was either that or the MRP-F250.. and they had very close ratings.. so i was like pretty indicisive(sp?) so i ended up going with the V12MRV-F407..

2AZN2DMAX

iTrader: (28)

The V12 series was their top of the line amps but now they have the PDX series.

FlipCpt45

iTrader: (6)

How much did it run for... back in the day..? isnt this a 2001 Series AMP?

2AZN2DMAX

iTrader: (28)

Around $300 at the time.

JPIZZLE

I competed with the V series amps from alpine and I never had any problems with them They are really a little under rated, I belive for 80 bucks you cannot go wrong!

01SilverMaxima

iTrader: (1)

i have that exact amp(mrv-f407), was in my old eclipse powering 6x9s and boston comps 6.5LF, getting ready to put it and 2 sets of the 6.5LFs in me new maxima. I love the amp and have had no problems with it. I also have 2 mrv-t757 powering 2 Boston Competitor 12s. Its all gonna be in the max soon, cant wait.

1996blackmax

iTrader: (2)

I would go with the MRV-F407.

mendon99

iTrader: (15)

V12 will always be better than V-power amps...

FlipCpt45

iTrader: (6)

wow, lol i thought this thread was DEAD... Yeah, i went with the V12 Amp, its not in bad shape, it has a little scratches and dents, but it powers on and all of the channels work.. even though i tested it with my Subwoofer preouts



Variable Crossover Network

FlipCpt45

iTrader: (6)

Hey, my reply survived the "hacking"!

FlipCpt45

iTrader: (6)

i thought id just add on to my existing post..

The alpine... has a problem....

Protection light blinks on and off RED
Manual says... "RCA Ground Floated"

What does that mean?

/////BlackNa-T

Hey,
I just got an Alpine Mrv-T757 V12 2ch amp doing the same thing. I know this thread is dead but for anyone else with the same problem, I found the fix. I did a lot of research and came across this thread. It is an open circuit from the RCA signal ground to the amp ground. To fix it, I removed the back cover and soldered a wire from both (-), or outside of the RCA connects, to the main amp ground wire input. Put the back cover back on, power up, and presto... Protection light is green. I hope this helps someone else because these are great amps.

FlipCpt45

iTrader: (6)

Hmm.. Actually i figured out what had happened.. my Pioneer headunit blew a internal fuse for the preouts..