20 Most Recent Legacy LA838 Car Audio Amplifier Questions & Answers

the12volt.com

Gee I would think that it is kind of obvious; your amp is blown. Just because it doesn't blow fuses doesn't mean much. If you hook the power up to the ground input and the ground to the power and then turn it on you pretty much toasted the amplifier. If you don't know why the amp is smoking, but you're trying to fix it yourself, you are basically telling me that you have no business doing so. I have been an installer for 15 years and even I am not dumb enough to try to fix a bad amplifier. Do everyone a REALLY big favor; stop messing around with something that you don't understand of have knowledge about before you hurt yourself.

The only way you'll know is by hooking it up and testing it. Amps should not smoke, so there's a pretty good chance you fried it.

Sounds like you may have a shorted switching Transistor in the switch mode power supply causing a short to ground. If you are technical enough. Remove power remove cover and do a continuity test on the transistors on the heatsink. non of them should read zero resistance between the three legs. in all connection configuration you use to hook up your meter. If one or Two or even all of them do you must replace with proper part.

4000 watt amp that was 2-channel with 2000 watts peak and 1000 watts RMS per channel, when wired as 4-ohm, which is what the sub's ratings are based on. therefore the amp and sub configuration were a perfect match, however approximately 1/2 an hour into driving with them i noticed a plastic/rubber burning smell and immediately shut off power to them. upon inspection both subs were blown and completely unusable. this leads to the conclusion that they were poorly rated and of poor quality materials, and i hereby advise that unless your going to run way under the limits, they are no good!

Good luck! I have been to their website and they dont appear to offer much. The manual is available that shows the pin out for the connectors but you are going to have to figure out what kind of connector is used by them and order it and then customize it with wires in order to use it. Most of their distributors are in the Jakarta region

It does look like there is minimal difference between the 1344 and your 3344. I would start your info gathering here LEGACY LMR1344 INSTRUCTION MANUAL Pdf Download ' ManualsLib I think the info you find here should be similar enough to get you started.

Is there a 20 or 30 amp fuse plugged in to the amp near where the 12 volt connection is? Usually, if an amp blows a fuse: something caused it. You must remove that cause, before you replace the fuse or it will just pop another one

250 watt per channel 1000 watt amp if so its a 20A fuse.

This Legacy LA 420 amplifier features 400 watts of power, two channels (bridgeable), a two-way crossover, Mosfet power, 2 ohms stable, and THD less than 0.04%. The amplifier measures 10" x 9.5" x 2.75".

Unfortunately, the amp is only 2 ohm stable, so the best option is to connect each subs voice coils in parallel (2 ohms) and connect the subs in series (4 ohms).

No, but you do need to have the REM connection from the amp connected to the remote turn on line of your head unit.

When woofers stop woofing it is because the voice coil is heavily damaged and stuck in the magnet air gaps or there is no amplifier power getting to the unit. Speaker connects need to be checked along with amp power to another known good speaker. If that unit also does not work then there is an amplifier issue that needs addressing.

if it really uses 1200 watts, that would call for a 140 amp fuse, which is outrageous. for that power, if turly approachable, you would need a v8 engine, and midified alternator(s) arrays, and a capacitor.