The Alpine MRD-M605 is great for those of us who like submarine seismic revelation. It has impressive features which, sadly, are not usually written in English. Here, I will do my best to translate your technical language into everyday English. I guess this would help you decide if it is what you really want or need.
Main characteristics and what they mean in everyday English …
The MRD-M605 is a V12 AccuClass-D mono amplifier. Class D in the amplifier classification tells you that it is a highly efficient amplifier. Gives high performance per input. That is, it does not draw too much current to give this massive power. It’s about 80% efficient, and that’s huge. It ensures that your car lights don’t dim because your subs are kicking around. The design used by Alpine to achieve this also ensures that the signal remains pure.
You can give this amp a bass boost at 45 Hz and this can be adjusted in 2 dB steps from 0 to 16.
It has a built-in variable crossover – first, this is what a crossover is …
A crossover is a passive device or circuit used in systems with separate tweeter and / or midrange driver drivers. It blocks out certain (preselected) frequencies that a particular speaker shouldn’t handle. This ensures that each speaker handles a particular frequency range that it is best suited to handle.
So now you can understand the figures that follow.
The MRD-M605 has a built-in low-pass crossover that can be adjusted from 30 to 200 Hz with 13 settings. Just understand that a low pass crossover allows low frequencies to pass through.
It has a subsonic filter – there are subsonic sounds that are not crucial to the quality production of your lows (unless you are playing music for whales or elephants). These frequencies often consume a great deal of power without adding anything positive to the audio experience. This filter removes those frequencies. It is switchable between 15Hz and 30Hz. It can also be turned off if you decide that you are missing some essential noise otherwise.
The MRD-M605 supports the installation of multiple amplifiers – this means that you can use two of these amplifiers to power one DVC woofer. Any amp can do this, but a digital setting helps you make sure the outputs are identical.
It has a 3-way protection circuit – This is a circuit design that protects your amplifier from excessive current (popularly called a short circuit), excessive voltage, and overheating or thermal overload. The particular reason / cause for entering this “protection” mode is also displayed on the LCD screen.
With this screen you can also control the DC input and internal temperature in Fahrenheit or Celsius. It also displays audio information such as EQ, gain, etc.
It has an aluminum cover that lifts up to reveal the LCD screen and control panel. This control has up and down buttons with which you can navigate the menu and make adjustments to the amp. You can still see the LCD screen when it is closed through a plastic window.
The MRD-M605 is rated RMS power (measured at 14.4V) of 400 watts x 1 at 4 ohms and 600 watts x 1 at 2 ohms. The minimum impedance of this amplifier is 2 ohms.
The only difference between the MRD-M605 and the MRD M1005 is the power rating …
RMS power rating (also measured at 14.4 V) for the MRD M1005 is 700 watts x 1 at 4 ohms and 1000 watts x 1 at 2 ohms.
So if you need more power than the MRD-M605 can provide, upgrade or go for the MRD M1005.
