Speakers cut off when bass goes up

Chances are your speakers are running at to low of impedance. Check if your running aftermarket. speakers, if so they are probably wired in parralle. Change the wiring to "series"increasingly your impedance from 2ohms to 8, that should solve your issue.

That is still a single channel cass D amp. Each (-) and each (+) terminal are connected so its actually like only having one. This is so you can hook speakers up in a series circuit to lower impedance, because this amp is 1ohm stable. What causes your speakers to blow is too much power. What kind of speakers are you running? This hifonics amp is very powerful, they are getting big in the competition industries beacuse they put our true power for less money and they are tough. That 1600 amp you have may be putting out more like 1800 watts at 14.4 volts which is 900 per sub at 1ohm so be careful this amp has tons of power and its true rated its not like a sony or rocksford or kenwood that says 1800 max and then in small writing it says 500 rms. This amp puts out true. I have 3 hifonics amps and love them.

yea for sure thats a good upgrade. You shouldnt havebeen able to blow the kenwoods with 400 watts though-meaning that they probably blew from distortion which causes heat(fast) Check your gain on the amp start it out at 1/4 gain and turn up your deck to the point where you can hear distortion from your mids and highs or to the maximum level that you listen to your music at. If you're jamming out at a level that is causing distortion then you will be sending a distorted signal to the amp as well. The amp then amplifies the distorted signal through the subs which overheat and blow. So find the distortion spot and then turn it down just a little bit till it clears up your sound-then adjust your gain on the amp up slowly until you cant hear it getting any louder. Once you have done that you have reached the limit of CLEAN power that you are going to get.Thats where you want to keep it. Watch the bass boost too if you have the bass up on the deck and then crank up the bass boost on the amp it really f's up the signal too. Good luck

you shouldn't need another batter. You aren't going to be disipating that much power all of the time. Your 2 Farad capacitor will help when the amp demands a lot of current during large bass hits. Just a question though, you say you have A CVT12 which is rated at 400 ohms rms and you are driving it with a 1400 Watt amp. Does this strike you as odd?

it must be reversed polarity in coil voices of speakers check + - wires from amplifiers fit on coil voices of speakers try to get each speaker to 8 ohms wiring in serial the two coil voices n'd put in paralel both speakers in bridge mode output from amplifier to get most stable power ,

for $85 i can sell you an Almani 900 watt 2 channel amp i would stay way away from those 3 brands they are all really poor quality and i can get you any major name brand cheaper.
I can get you a hifonics 4008 amp (800 watts peak 100 watts per channel rms) for $100 shipped with full factory warranty. you find an amp you like and i will get you a price. I am a factory wholesale distributor for most brands.

it may be a wiring problem you need to make sure all the speaker positives and negatives are correct. I sell alot of hifonics amps and have never had 1 do that. it may also be a bad rca cable. if it only does it when you use the filter i would say not to use it also make sure the gain is no more than 3/4 turned up and the bass boost no more than 1/2. if you have a dif amp try a temp setup using it and if it still does it its a wiring issue. also try 1 speaker at a time on the hifonics and keep adding 1 till it comes back it may be a bad voice coil on 1 sub .

220 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms)
the amplifier may be over-driven. are there red protection lights coming on the front panel? Or a loose wire - power, ground, or speaker.

Hi , you need to replace with thick wire , if possible attache fuse or circuit trip overload protection you may ask to thew radio store .

Make sure the BOSS isn't in "Protected" mode (Red led lit) and connect the speakers properly (check the connections if they are in "bridged" mode).
Also, make sure you set the cross-over, bass boost setting, bass volume control and the bridge mode according to the speakers you are connecting. Check the input level too.
The BOSS amplifiers are of very poor quality and it can be easily broken. Maybe yours is broken.