1 ohm stable?

No keep on trying end blow everry thing up, Buy some real subs.

make sure your amp can hold either .5 ohms , 2 ohms or 8 ohms...... by my guess your amp is either 2 ohm stable or 4 ohm stable and you have them wired down to .5 ohm.....this will cause it to overheat and kill your amp. check out the12volt.com it will give you wiring guides for hooking up subs.

Connecting a single speaker, speaker impednce should be equal to or greater than 1 ohm. Connecting 2 speakers, each speaker's impedance should be equal to or greater than 2 ohm

yes it should

I would stick with Kicker or MTX. The best place in my mind to get them is soncelectronix.com
Just try to mach the specs as close as possible. Make sure to look at the recommendations of the subs for the size of the box and the port volume.

Hello if your amp is the one above in the picture, MTX-1501D then your amp is not 1 ohm stable. Your amp is rated at 500 watts x 1 at 4 ohms and 1000 watts x 1 at 2 ohms. The amp has a safety circuit that if it senses to low of a load, ohms, it will only put out half it's power to protect the amp from shorting out. Read the manual. You can download it at retrevo.com or just google it and a manual download site will be in the search list. Hope this hels, Good luck.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/mark_b53a7494531bf96d

the 1501d is a one channel amp! But has two terminals for that same channel. that amp is stable to produce say 700 watts into 4ohms but also stable to produce 1500 watts into 2ohms.If you were to have two 4ohm speaks it would be easier to have a terminal for each speaker.good amp btw but be careful with their fragile preamp inputs

There are a lot of problems that can cause the amp to apply DC to the speaker terminals.

Before we go any farther, you should know that this amp stores enough energy to kill. When power is applied, the transistors must be clamped to the sink. After removing power, you MUST wait for ALL LEDs to go COMPLETELY out.

You need to CAREFULLY measure the DC voltage from leg 1 to leg 3 of all of the output transistors (the ones you changed). Post a list of the voltages and circuit board designation (FETxyz) for any that read more than 1v.

Do NOT let the probes short to other pins or to the heatsink when measuring the voltage.

Remember... High voltage and lots of stored energy. Be careful.

You need to switch your meter to ohms and measure the resistance across them. You should read something near 4.75 ohms.

4.75 ohms would cause a constant tone on diode check or continuity.

Did you replace all 8 output transistors?

If not, are you sure that the other 4 transistors haven't failed?

R435 is 39.2 ohms. If R436 is the other gate resistor, it's also 39.2 ohms.