Channel: Charcoal Monkey

Category: Howto & Style

Tags: lightning lab amplifierhow to measure amp actual powerstrapping mono bass ampsclass d mono amplifiermono subwoofer ampmassive gtx 122multimeters for amplifieramplifier ohm's law50hz tonelightning lab subwoofer amp1500w mono class d ampamplifier output power testamp dyno test without amp dynosubwoofer amp bass knoblightning lab mono amphow to wire subwoofer to amplifier40hz tone testhow to set gain on ampstrappable subwoofer amplifier

Description: Unboxing, product showcase and an intensive output power testing plus my personal review of the Lightning Lab AMF1500.DS2. A Class D circuit mono-block 1500w RMS rating subwoofer amplifier. Wired and hooked up to 4 gauge power cables for a couple of test runs. The amp aluminum body feels solid and this thing weights a ton like literally so heavy! All stainless hardware power connectors including the threaded reinforced RCA connectors. Speaker terminals can hold and secure up to 8 gauge copper cables. I could have done all this easily and more accurately on an amp dyno but sadly I can't afford any amp dynos, boi! Without any more unnecessary fuzz and buzz, let's get this thing smokin'! 00:00 - Unboxing and product showcase. The amp included an owner's manual and a remote bass knob. 00:35 - Amplifier installation. Hooked up 4 AWG power cables and connected a 90 degree RCA at the opposite side. 00:55 - Our cute Church the French bulldog is doing his best, goofing around. 01:10 - Turning on the amp for the first time. Nice blue LED on the product logo. I like it. 01:25 - Hooked up a digital multimeter and set it to measure voltage AC. 01:35 - Set the EQ on the headunit to flat, 80Hz low pass filter @ 0dB, and 12dB slope. 01:45 - 40Hz sine wave tone is played. Pioneer stereo headunit volume is on 40/62. 02:00 - First test: Measure output power without an active or resistive load. Measuring AC voltage while turning the gain all the way up. 02:25 - Max reading is 42.7v AC. Calculated using Ohm's Law formula in deriving power, P=V²/3 02:40 - Next test is to attach an active load. I am using a Massive GTX 122 12" 700w RMS subwoofer having a marketing peak handling power of 1400w. We'll see later. 02:55 - Measuring actual output power on an active load. Playing same 40Hz tone on same level of volume. 03:15 - A digital multimeter set to measure volts AC and a clamp meter to measure current in amperes AC. Turning the gain all the way up against the subwoofer. 03:25 - Another Ohm's Law formula is used here to derive power with volts and amps AC as known values. P=VxI or Power = Volts x Current. 03:45 - Finally, my personal review about this amazing product. 04:00 - Bonus. Subwoofer excursion on a 50Hz sine wave tone at normal gain levels. Ok I think that's it for today, ladies and gentlemen. I hope you like our episode today and hope to see you all in the next video. Have a nice weekend!