Hikato Posted April 2, 2011 Report Share Posted April 2, 2011 I was brave enough to run two DVC4 ohm Kicker CVR15s at 1 ohm on an MTX JackHammer JH600 amp. Handled it like a champ, too (at least to my liking).. until I covered it's airflow. Opened the amp and easily saw two blown MOSFETs. Ordered replacements (specs all matched, etc) and replaced the two. Nothing else on board looks damaged, but the amp still flashes a voltage light. What else should I check? Any ideas? Quote 2012 Ford F150 XLT CrewCab w/ 3.5L EcoBoost V6 - Livernois Motorsports 93 Octane Performance Tune - 6000k HIDs Hi/Lo + Fogs - 5% Tint all around w/ 7" Brow (50% windshield soon) - 6" BDS Suspension Lift + 2" Leveling Kit - 35x12.50 Toyo Open Country M/Ts - 20" Chrome Ballistic Jester Wheels - 4" Heartthrob Exhaust - Airraid Cold Air Intake - Pioneer AVH-P4400BT - 2x Sundown SA 10s in under-seat ported enclosure. (ports+subs forward) - Rockford Fosgate T1000-1bdCP (T400-4 soon) - Rockford Fosgate T1 6.5 Components Link to comment Share on other sites More sharing options...
Socky Posted April 2, 2011 Report Share Posted April 2, 2011 My only idea is, save for another amp that is one ohm stable so you wouldnt have this problem again. Quote Jeep Cherokee 4dr -4.75 in front, new rusty's 4.5 in rear leafs -micky thompson 35x14.50x15 -locker rear -Rusty's offroad Engine/transmission/transfer case/crossmember/gas tank skid plates -Warn front bumper with 8000lb winch -Custom rear bumper -Warrior product tube doors (summertime) -Optima redtop (starter) -26XK miles and still runs like a bat out of hell Kenwood H/U 1/0 wire, 136 amp alt 200 ah batteries 12.7 daily 2 Apsm 1500 @ 2 ohm strapped on zv3 d1 with ns softparts Mb quart 125.4 wired to 4 aura 6's 3.6 cube box tuned to 36 plays down to 23hz Link to comment Share on other sites More sharing options...
Hikato Posted April 2, 2011 Author Report Share Posted April 2, 2011 Well the amp is supposed to power my RF P1 10"s in my downfire box under the back seat. The 15s are a friend's that we'd use for block beating and using my truck when we're out riding ATVs and such. Quote 2012 Ford F150 XLT CrewCab w/ 3.5L EcoBoost V6 - Livernois Motorsports 93 Octane Performance Tune - 6000k HIDs Hi/Lo + Fogs - 5% Tint all around w/ 7" Brow (50% windshield soon) - 6" BDS Suspension Lift + 2" Leveling Kit - 35x12.50 Toyo Open Country M/Ts - 20" Chrome Ballistic Jester Wheels - 4" Heartthrob Exhaust - Airraid Cold Air Intake - Pioneer AVH-P4400BT - 2x Sundown SA 10s in under-seat ported enclosure. (ports+subs forward) - Rockford Fosgate T1000-1bdCP (T400-4 soon) - Rockford Fosgate T1 6.5 Components Link to comment Share on other sites More sharing options...
STEvil Posted April 3, 2011 Report Share Posted April 3, 2011 You need to change the rest of the 'fets as well on the stage (input or output) that those ones were damaged on likely. If doing the rest of them doesnt help then you've got larger issues.. which sucks. Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
Boon Posted April 4, 2011 Report Share Posted April 4, 2011 Hard to say which section of the amp those parts are in but chances are something in the drive circuitry is broken. If you don't have a scope, it's a paperweight. (And I think they're surface mount for all the little bits in those amps, so good luck with that unless you have rework equipment) Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.