Rockford Fosgate 800a2, MA Audio MA121XQ 12's bass testing vid-1

Did some testing out in the car! My RF 800a2 has been in hiding for the past few years & I wanted to get a video of it in action, so I figured I would hook it up in the car as I have been slowly installing the system in there & pretty much just had to hook it up & throw in the woofers. I do not plan on using this 800a2 as it is brand new other then the testing I have done with it, but I do have another one I will be using. Don't hate on the head unit! It was free & I like the USB / SD card slot & AUX IN & it surprisingly don't sound that bad, I guess technology helped the cheap companies through the years! lol. The highs are the factory speakers in the doors run off the factory ford amplifier in the trunk, I tapped into the line level IN with the head units RCA front outputs, I plan on changing all that when I can, but for now it will have to do. I only put the amp & subs in for these vids, they are not installed out there hence the wire everywhere & the amp laying on a towel, haha. And yes the sub amp was probably clipping very badly, I was in a hurry since I was in a parking lot & decided not to mess with the gains, but I know they were way too high, the subs started to smell real bad, but I did not play it too long for each vid. I merely wanted to hear how loud the bass was. Like I said, just a quick test. Don't sound bad for some cheap speakers.

Category:

Entertainment

Tags:

• RF
• Rockford
• Fosgate
• 800a2
• 800aII
• G800a2
• amplifier
• amp
• MA
• Audio
• 12
• ma121xq
• sub
• subwoofer
• testing
• bass

[kskate91]

Aw sorry to hear that bro it will live to play again trust me. Very easy repair job if the mehsa solder pads are still good your good. Ebay has the original Harris IRF540 fets for I think 1.50 a pop and IR brand P channel fets too. I bought those for a recent repair on a 55.2 with a blown channel and power supply. Works good as new :) I have a million of those chips if you need some I would send you some just in case you know if u get some DSM amps or more .2 / .4 amps with xcards. Make a vid o

[621ELECTRONICS]

@kskate91 Yep, MESHA is good still. Looking at the schematic it seems the Xcard can be bypassed fairly easy for full range. I pulled the bad parts from the blown channel & replaced a missing resistor in the good channel (LEFT) & had to reset the bias as someone fooled with it, but got the LEFT channel running fine & sounds great! Just need some FETs, source resistors & an SMD transistor or two for the bad channel & it will live again! The one channel drove my 15” MTX house speakers ok! Later!

[kskate91]

Ahh bummer, yepperzz mine came today in the morning. And best part it is fully functional! Looks like a small signal trace was repaired bc theres a thin blck wire soldered underneath the board but no prob it works fine. I'm pretty sure yours is probably gonna be another good score that works :) those 55.2's are seriously no joke man! I ran one 2 ohm mono with a CVR 10 it was the best setup at that time.

[621ELECTRONICS]

@kskate91 It works? SWEEEEET! I did not expect that man, I know they said they were untested or something, but that usually means there blown, lol, but not always, sometimes they are truly untested. I can’t wait to get mine for sure, lol. The mail man just came by a few minutes ago & no amp :-(. Our mail people screw around, its probably on the truck & he did not feel like coming to the door, it happens a lot here, haha. I’ll try to post a vid at some point after I get it!

[kskate91]

Yo did your P55.2 come to ya yet?

[621ELECTRONICS]

@kskate91 Well the 55.2 came today, but its in bad shape :-( Its missing the Xcard which I forgot they used them in the earlier amps. The output FETs for one channel have been replaced & are not even soldered down & are bad, haha, one of the source resistors has been replaced with the wrong one & its missing most of the terminal screws & some MESHA screws & the remote turn on tab is missing. I hope I can rig up something for an Xcard, if not, I am not sure its worth repairing without the card.

[kskate91]

Great to hear that. Yeah they are powerful little amps I love those .2 series amps. Let me know how the repair turns out man

[621ELECTRONICS]

@kskate91 Nope, still not here yet :-( The tracking shows it was accepted at there local postal facility on 22nd & left there later that day. So I will assume it was shipped the 22nd & won’t be here for a few days yet, was hoping to get it sooner then that, but oh well, no biggie. Did you get yours yet?

[1FCKiT3]

@621ELECTRONICS i heard tha power can be smaller as long as tha ground is as big or bigger? do u know if thats true? but yeah i wouldnt mind going 2 gauge i just dont wanna buy it (especially if i buy online for cheaper prices) and have tha shit not fit know what i mean

[621ELECTRONICS]

@1FCKiT3 Its 4 gauge power & ground wires. 4 gauge is sufficient for one of these amps, but larger would be a good idea especially if you run more then one amp. I had the 4 gauge ran into distribution blocks then two 8 gauge wires from the blocks to the dual power inputs on the amp, so two 8 gauge grounds into the amp & two 8 gauge power wires about 1 to 1.5 ft long. Yeah, definitely get at minimum, good 4 gauge oxygen free copper wire. Your power & ground wires should be the same size as well.