khinds94

So I bought a Tantric HD 12 d2 a week ago and received it yesterday. Today I went to put it in my 2.5 cu enclosure and I am having a problem with the sound/voltage. It doesnt drop ( to maybe low 14s) and something is definitely wrong. I had a problem similar to this last week when I realized my coils on the mayhem were toast. Voltage drop with zv4 was to around 12 volts. The way it is playing seems as if it wired very high. What I did: -Checked coils on sub (read 2.4ohm each) -impedance at the output terminals is 1 ohm (car off) -o-scoped the rca's and output voltage (clean) - free aired the sub and notice no coil rub at all (seems as if not getting full power) and it sounds perfect - sub appears to be in mint condition - changed port tunings (didnt help) Only thing I can think of left: - check power/ground input (dont think this is going to do anything) I really need some help guys been out of bass for 2 weeks and cant figure this problem out.

thanks for the help Alton been a struggle the last 2 days

What do those linear actuators do?

I would do that If I had another sub that was working... the mayhem has bad coils and the Zv4 had burned leads so I need to recone them both. I used an Alpine sub free air that my friend had and the voltage drop to low 14s at 2 ohm which still doesnt seem right. Possibl you damaged the amp when you bbq'd the mayhem. J The mayhem probably broke from clipping... how could the amp be damaged from that.

So where should I go from here? measure the resistance again? even though i checked the coils are 2.4 before i put the sub in... or should I go buy a clamp meter?

car off means the amp is off. so wouldnt it be the same as just wiring them in parallel and putting the probes across positive and negative terminals while not connected to the amp?

I measure the resistance at the terminals with the car off. But I dont have a clamp, can I get one at like home depot?

I would do that If I had another sub that was working... the mayhem has bad coils and the Zv4 had burned leads so I need to recone them both. I used an Alpine sub free air that my friend had and the voltage drop to low 14s at 2 ohm which still doesnt seem right.

I see... I went to measure the AC current output at the terminals of the amp but when I had a 30hz tone going and put the leads onto the screws It was sparking. That was only trying to read the AC current, it wouldnt do this when I measured AC voltage. and yes I measure the subs resistance at the terminals of the amp and I get like 1.3 ohm

I checked my AC output voltage and it is only 32 VAC which seems low... So the amp isnt making the power or the load is higher than what it appears to be. It must be the amp because the output terminals read 1.0-1.3 ohm when the car is off.

Yea man I had the same Idea, thats where I swapped out the 22 hz port back for the 32 hz port and nothing changed. Its really a problem because even when I free air the sub I barely get any voltage drop. Im going to spend some time today getting some output voltage and current numbers.

I can check the AC current at the output terminals, but if it was a battery or alternator problem I wouldnt be holding voltage.

of what?

The sundown 2000d doesnt have any internal fuses and Im not fused in between my second battery and the amp. The gain is fine because I o-scoped it, the subsonic filter is all the way down.Why is it all the way down!!? Trying a different amp was my next move... but dont have an extra lol. My subsonic is all the way down because im tuned to 22

The sundown 2000d doesnt have any internal fuses and Im not fused in between my second battery and the amp. The gain is fine because I o-scoped it, the subsonic filter is all the way down.

o scoped the rcas and checked voltage on it so it cant be head unit. amp I couldnt tell you.

I stated in my first post that I measured the impedance at the output terminals when wired in parallel and I get 1.2.-1.3 ohm.

Yea man when the D2 mayhem was working my voltage was dropping into 12s, theres no way im getting a current draw of atleast 150 amps and only dropping under a volt.

So after finding out I burned up one of my zv4 leads (probably because of clipping), I decided to throw my mayhem back in. Voltage was dropping to 14.0 from 14.9 max, so I knew something was wrong. Mayhem was working fine when I took it out a year ago when I got the zv4. They were ordered with D2 coils. How did this happen? I cant imagine it was from clipping as well.

I see, I did check the connections at the terminals and they are fine. I cant even check the tinsel leads or the connection to the coil like I could with the zv4 as the mayhem has sandwiched leads.

Are you going to cut holes in the siding so you can fit the input wires? seems like a tight fit if not.

Kinda odd that he would leave where he obtained his customer base. Must be other issues we aren't hearing about.

How is your Zv4 treating you? Its a nice driver... different from the mayhem in many ways. I like to swap them out from time to time. But atm my sundown 2k is powering on but no sound, going to check the output terminals and rca input. Hope its not the amp.

Zv4... just look at the juicy surround