Amplifier - Lanzar Opti2000D
12 volt tuning
Listening TestI cruelly subjected the LSE's electrical system and subwoofer to the brutality of the Opti2000D. I put in a new battery six months ago, and it's been wired with 4awg cable, so what the heck. There was no engine noise, just some amplifier noise that you couldn't hear when the trunk was closed. The irritating turn-off pop was still present. The main problem with this listening test was that the rest of the system couldn't keep up with the DVC 12 inch with this much power. At lower listening levels, this much power kept the 12 inch quick and tight, and it reproduced the lowest frequencies I could send to it. Planet Krypton from the old Car Audio Nationals CD goes down below 20Hz, and it just kept shaking. Had I been driving I would have thought there was something wrong with the car. I went through my usual array of CDs with good results without any Bass Boost help from the amplifier. I put in the "sine bombs" (basic rhythms with descending sine wave sweeps) and cranked the bass boost all the way up. With the boost up, I had to turn the level down and lost some of the lower frequencies, so I turned the boost back down and cranked the gain back up where it was before. I couldn't hear much from the mids and highs, as they are running a mere 150 watts each, but I cranked it up until I thought things were starting to come apart. (Ahh, the good old days.) The amp was barely above room temperature after 20 minutes of fun.
ConclusionThe Lanzar OPTI2000D does what it is supposed to do; that is, send lots of power to your subs. It is one of the most efficient amplifiers I have tested and appears to be pretty bulletproof. It pays to buy in bulk too-1,962 watts measured at a price of $722.19, that's about 37cents per watt! At a price like that you can put up with a little noise in your subs, and your friends can help you hook it up.
| TEST RESULTS |
| OUTPUT POWER @ 1%THD, 1KHZ, 14.4VOLTS |
| MONO @ 4OHMS | 770 WATTS |
| MONO @ 2OHMS | 1118 WATTS |
| MONO @ 1OHM | 1687 WATTS |
| MONO @ 0.5OHM | 1962 WATTS |
| OUTPUT POWER @ 1%THD, 1KHZ, 12.5VOLTS |
| MONO @ 4OHMS | 673 WATTS |
| MONO @ 2OHMS | 988 WATTS |
| MONO @ 1OHM | 1406 WATTS |
| MONO @ 0.5OHM | 1635 WATTS |
| DISTORTION AT RATED POWER, 1KHZ, 14.4VOLTS | 0.14% @ IMPEDANCE |
| INPUT SENSITIVITY | 250MV TO 8VOLTS |
| FREQUENCY RESPONSE ( + 1DB) | 15HZ -130KHZ |
| S/N RATIO (A WEIGHTED, BELOW CLIPPING, MIN GAIN) | > 83DB |
| SLEW RATE | 6.5V/MSEC |
| DAMPING FACTOR @ 100HZ, 4 OHMS | 105 |
| IDLE CURRENT | 2.1AMPS |
| MAXIMUM CURRENT CONSUMPTION, UNCLIPPED | 117AMPS @ 1152WATTS |
| EFFICIENCY AT 1/3RD POWER LOWEST IMPEDANCE | 79% |
| EFFICIENCY AT FULL POWER, 1%THD, LOWEST IMPEDANCE | 85% |
| CROSSOVER SLOPE | 24DB/OCTAVE |
| CROSSOVER RANGE, LOWPASS | 48HZ - 155HZ |
| SUBSONIC SLOPE | 24DB/OCTAVE |
| SUBSONIC RANGE, LOWPASS | 14HZ - 56HZ |
| LOW FREQUENCY BOOST | +19DB @ 43HZ |
| DIMENSIONS | 19 1/8"L X 10"W X 2.5"H |