Alpine 574RMS Amp. 12" Sub. Ported Box. $220 OBO
05-12-2010 | 03:17 PM
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Alpine 574RMS Amp. 12" Sub. Ported Box. $199 OBO
$199 Or best offer. First Reasonable offer takes it.
-Willing to Seperate all three. As of now Amp is mounted on wooden, white painted ported box.
Great Amplifier. Cool real-time digital displays (such as temp, volts) with nice little neon blue light at night. Great Subwoofer. Loud, Clear, Shakes!
Subwoofer: Infinity 1230w.12" 4-ohm Component Subwoofer Polypropylene cone, Hi-roll rubber surround, 50-300W RMS power range, 20-250 Hz frequency response.
Note: Sub was superglued and stapled as it began to seperate (I know, I know, Ghetto, couldnt be bothered, still works great)
**AMPLIFIER SPECS** Has minor cosmetic scratches, nothing big.
MRD-M500
***Power: This unit measured at 574.6 watts RMS into 2 ohms at 14.4 volts.***
500 watts x 1 @ 2ohms @ 14.4v
250 watts x 1 @ 4ohms @ 14.4v
400 watts x 1 @ 2ohms @ 12v
200 watts x 1 @ 4ohms @ 12v
THD at rated power - 1%
S/N ratio 90dB
Frequency response 20Hz - 200Hz
V12 AccuClass-D Mono Amplifier: The V12 AccuClass-D amplifier design allows it to deliver massive power without correspondingly huge current draw.
Hood: The amplifier has a metal hood that flips up to reveal the control panel. The control panel consists of five buttons, Display, Mode, Enter, <, and >. These buttons are used to navigate the menu that includes all the adjustments on the amp (input level, crossover, EQ, time correction, phase, etc).
Display: The digital display can be switched between input voltage, current draw, and internal temperature in Celsius or Fahrenheit.
Sub-sonic Filter: The sub-sonic filter is used to filter out low frequencies that you cannot hear but can "rob" power from the amplifier. The crossover point is variable between 15Hz and 50Hz in 5Hz steps.
Built-in Variable Electronic Crossover: The built-in low-pass crossover is adjustable from 30 to 200Hz in 1/12 octave steps with a slope of 24dB/octave.
Parametric Equalizer: A fully adjustable parametric EQ is built into this amp. The center frequency is adjustable from 30 to 160Hz in 1/12 octave steps. The Q value of the EQ curve is selectable between 0.5, 1, 2, 3, 4, and 5. The EQ level is adjustable from -12dB to +12dB in 1dB steps.
Bass Compensation: The Bass Compensation circuit is used to enhance low-end bass definition.
Time Correction: Time correction allows you to time align this amp with others in the system. This is particularly useful to maximize SPL if there are multiple subs and sub amps. The adjustment range runs from 0-10ms in 0.1ms steps.
Phase: The phase is selectable between 0 and 180 degrees.
Multi Amp Installation: Because the above adjustments are all digital and discrete, two of these amplifiers can be used to power the two voice coils of a DVC woofer (technically this is true of any amp, but with analog adjustments an oscilloscope is needed to ensure the outputs are identical).
Amplifier ID: Alpine makes a Remote Amplifier Control Center (RACC) that will control up to eight V12 AccuClass-D amplifiers. For this reason each amp needs its own ID when more than one amp and the RACC are used.
Turn On Delay: The time it takes the amp to turn on is adjustable. This is useful for eliminating turn on thump.
Safe Mode: The Safe Mode turns off the power output of the amp while leaving the control functions active. This might be used as a valet function.
Memory: All the settings on the amp can be stored in memory for easy return to your preferred values.
Protection Circuitry: The protection circuitry guards against accidents and undesired operation. Included are Short circuit, Over-voltage, and Thermal overload.
Controls
Top of Amplifier: The control panel consists of five buttons, Display, Mode, Enter, <, and >. These buttons are used to navigate the menu that includes all the adjustments on the amp (input level, crossover, EQ, time correction, phase, etc).
Inputs and Outputs
Front of Amplifier:
Battery (+12 V): gold-plated set-screw terminal that will accept up to 4 gauge wire
Remote (turn-on): gold-plated screw terminal that will accept up to 10 gauge wire or a spade up to 0.355" wide
GND (ground): gold-plated screw terminal that will accept up to 4 gauge wire
Speaker Output: gold-plated screw terminals that will accept up to 8 gauge speaker wire or a spade up to 0.5" wide
RCA Input: gold-plated RCA line input jacks
RCA Output: gold-plated RCA line output jacks
Controller: DIN plug for connection of remote controller
__________________________________________________ ________________
Not the prettiest, not the ugliest, does its job and does it well. Bulletproof, Nice, and Loud.
Ajax.
Willing to meet up.
PM
___________________________________
Key words: Car audio, infinity, subwoofer, ported box, sound system, bass, mobile audio, car system, reference series, alpine, 12" subwoofer, subs.
-Willing to Seperate all three. As of now Amp is mounted on wooden, white painted ported box.
Great Amplifier. Cool real-time digital displays (such as temp, volts) with nice little neon blue light at night. Great Subwoofer. Loud, Clear, Shakes!
Subwoofer: Infinity 1230w.12" 4-ohm Component Subwoofer Polypropylene cone, Hi-roll rubber surround, 50-300W RMS power range, 20-250 Hz frequency response.
Note: Sub was superglued and stapled as it began to seperate (I know, I know, Ghetto, couldnt be bothered, still works great)
**AMPLIFIER SPECS** Has minor cosmetic scratches, nothing big.
MRD-M500
***Power: This unit measured at 574.6 watts RMS into 2 ohms at 14.4 volts.***
500 watts x 1 @ 2ohms @ 14.4v
250 watts x 1 @ 4ohms @ 14.4v
400 watts x 1 @ 2ohms @ 12v
200 watts x 1 @ 4ohms @ 12v
THD at rated power - 1%
S/N ratio 90dB
Frequency response 20Hz - 200Hz
V12 AccuClass-D Mono Amplifier: The V12 AccuClass-D amplifier design allows it to deliver massive power without correspondingly huge current draw.
Hood: The amplifier has a metal hood that flips up to reveal the control panel. The control panel consists of five buttons, Display, Mode, Enter, <, and >. These buttons are used to navigate the menu that includes all the adjustments on the amp (input level, crossover, EQ, time correction, phase, etc).
Display: The digital display can be switched between input voltage, current draw, and internal temperature in Celsius or Fahrenheit.
Sub-sonic Filter: The sub-sonic filter is used to filter out low frequencies that you cannot hear but can "rob" power from the amplifier. The crossover point is variable between 15Hz and 50Hz in 5Hz steps.
Built-in Variable Electronic Crossover: The built-in low-pass crossover is adjustable from 30 to 200Hz in 1/12 octave steps with a slope of 24dB/octave.
Parametric Equalizer: A fully adjustable parametric EQ is built into this amp. The center frequency is adjustable from 30 to 160Hz in 1/12 octave steps. The Q value of the EQ curve is selectable between 0.5, 1, 2, 3, 4, and 5. The EQ level is adjustable from -12dB to +12dB in 1dB steps.
Bass Compensation: The Bass Compensation circuit is used to enhance low-end bass definition.
Time Correction: Time correction allows you to time align this amp with others in the system. This is particularly useful to maximize SPL if there are multiple subs and sub amps. The adjustment range runs from 0-10ms in 0.1ms steps.
Phase: The phase is selectable between 0 and 180 degrees.
Multi Amp Installation: Because the above adjustments are all digital and discrete, two of these amplifiers can be used to power the two voice coils of a DVC woofer (technically this is true of any amp, but with analog adjustments an oscilloscope is needed to ensure the outputs are identical).
Amplifier ID: Alpine makes a Remote Amplifier Control Center (RACC) that will control up to eight V12 AccuClass-D amplifiers. For this reason each amp needs its own ID when more than one amp and the RACC are used.
Turn On Delay: The time it takes the amp to turn on is adjustable. This is useful for eliminating turn on thump.
Safe Mode: The Safe Mode turns off the power output of the amp while leaving the control functions active. This might be used as a valet function.
Memory: All the settings on the amp can be stored in memory for easy return to your preferred values.
Protection Circuitry: The protection circuitry guards against accidents and undesired operation. Included are Short circuit, Over-voltage, and Thermal overload.
Controls
Top of Amplifier: The control panel consists of five buttons, Display, Mode, Enter, <, and >. These buttons are used to navigate the menu that includes all the adjustments on the amp (input level, crossover, EQ, time correction, phase, etc).
Inputs and Outputs
Front of Amplifier:
Battery (+12 V): gold-plated set-screw terminal that will accept up to 4 gauge wire
Remote (turn-on): gold-plated screw terminal that will accept up to 10 gauge wire or a spade up to 0.355" wide
GND (ground): gold-plated screw terminal that will accept up to 4 gauge wire
Speaker Output: gold-plated screw terminals that will accept up to 8 gauge speaker wire or a spade up to 0.5" wide
RCA Input: gold-plated RCA line input jacks
RCA Output: gold-plated RCA line output jacks
Controller: DIN plug for connection of remote controller
__________________________________________________ ________________
Not the prettiest, not the ugliest, does its job and does it well. Bulletproof, Nice, and Loud.
Ajax.
Willing to meet up.
PM
___________________________________
Key words: Car audio, infinity, subwoofer, ported box, sound system, bass, mobile audio, car system, reference series, alpine, 12" subwoofer, subs.
Last edited by Contour24v; 05-15-2010 at 09:16 AM.
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