jimmclrk1
Best idea I can reccomend is to hook the amp up to power and hook a dmm up to the terminals, set it to ac volts and play a 50hz tone (on repeat) though the amp (no speakers connected).
Now play the source as loud as it will go with out clipping and leave all EQ settings off, we want a straight 50hz tone going cleanly into the amp.
Start with the amps gains at minimum
An AC voltage readout should appear on the DMM, write it down.
Now switch the DMM to DC setting and write down the DC voltage.
Start turning up the gain in 1/8th increments writing down the voltage for both DC and AC
When the DC voltage spikes up this is an indicator that the amp is clipping, so referr back to you're last reading with a low DC voltage.
The highest AC voltage attained without a spike in the DC voltage will be the indicator of the unclipped power capability of the amp.
To convert the AC voltage to wattage you use this formula
Voltage squared divided by ohms.
So if you got a maximum unclipped voltage of 20volts simply do this-
20 x 20 divided by speaker impedance, lets say 4ohms
20 X 20 /4=100 watts
now if you're has high current capabilities like 1ohm stability, just substitute the 4 with a 1.
Now you can do this with each channel including a single bridged channel.
Again this is just a way to get an idea of what the voltage capabilities of the amp are.
To really dial this in perfectly, you would need a regulated DC power supply source, a fixed load resistor, a calibrated input signal (1-4 volts AC) source, an AC/DC voltmeter and an ammeter to measure voltage and amps at the load resistor. Having all this test gear, you can then make a precise output measurment of a given amp.
Now play the source as loud as it will go with out clipping and leave all EQ settings off, we want a straight 50hz tone going cleanly into the amp.
Start with the amps gains at minimum
An AC voltage readout should appear on the DMM, write it down.
Now switch the DMM to DC setting and write down the DC voltage.
Start turning up the gain in 1/8th increments writing down the voltage for both DC and AC
When the DC voltage spikes up this is an indicator that the amp is clipping, so referr back to you're last reading with a low DC voltage.
The highest AC voltage attained without a spike in the DC voltage will be the indicator of the unclipped power capability of the amp.
To convert the AC voltage to wattage you use this formula
Voltage squared divided by ohms.
So if you got a maximum unclipped voltage of 20volts simply do this-
20 x 20 divided by speaker impedance, lets say 4ohms
20 X 20 /4=100 watts
now if you're has high current capabilities like 1ohm stability, just substitute the 4 with a 1.
Now you can do this with each channel including a single bridged channel.
Again this is just a way to get an idea of what the voltage capabilities of the amp are.
To really dial this in perfectly, you would need a regulated DC power supply source, a fixed load resistor, a calibrated input signal (1-4 volts AC) source, an AC/DC voltmeter and an ammeter to measure voltage and amps at the load resistor. Having all this test gear, you can then make a precise output measurment of a given amp.
Heres some seller info from another forum-
ive got 2 of the last style mark antony mk 25 opcms left for sale. 1 new in box, other has 2 competitions on it but mint!!
new one: $525
used one: $475
comes will all boxes, owners manuals, etc. and mint!!!
specs at 12.6 volts:
25 watts x 1 @ 4 ohms
500 watts x 1 @ 2 ohms
1781 watts x 1 @ 1 ohm
2300 + watts @ .5 ohms (will run all day long)
strappable at over 3200 watts
specs at 16 + volts:
no clue!!! but it will run 16 volts all day long!!
remote gain control
fan cooled
4 40 amp fuses
full crossovers
slavable
strapable
0/1 awg power/ground and 8 gauge speaker hookups
these differ from all the other mark antony mk 25 opcm amps, these have mark antony laser engraved on the heat sink and have platinum power/ground/speaker hook ups.
ive got 2 of the last style mark antony mk 25 opcms left for sale. 1 new in box, other has 2 competitions on it but mint!!
new one: $525
used one: $475
comes will all boxes, owners manuals, etc. and mint!!!
specs at 12.6 volts:
25 watts x 1 @ 4 ohms
500 watts x 1 @ 2 ohms
1781 watts x 1 @ 1 ohm
2300 + watts @ .5 ohms (will run all day long)
strappable at over 3200 watts
specs at 16 + volts:
no clue!!! but it will run 16 volts all day long!!
remote gain control
fan cooled
4 40 amp fuses
full crossovers
slavable
strapable
0/1 awg power/ground and 8 gauge speaker hookups
these differ from all the other mark antony mk 25 opcm amps, these have mark antony laser engraved on the heat sink and have platinum power/ground/speaker hook ups.
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