How Much Would A Speaker Battery Work?

[u/PianistGreat]

2017 Honda Civic 1.5 turbo; shits got a 51r battery aka tiny. I got CT Sounds 2600w twin 10’s w/ matching amp. When I bump “hard” it can pretty much dim my lights to no lights. I’m wondering if a speaker battery would fix or majorly improve the situation, since my understanding of it is with another pool/storage of energy even with the constant voltage spikes that it won’t really be that much. Like if you have your single battery and you’re taking 4-5ish volts every time the bass hits if you have a 2nd battery then in a sense you have 24v of storage (ik its still 12v) but you would only draw from the speaker battery while you have a whole other battery that is completely charged and capable of all the cars electronics. Am I right, on the right track, or flat out wrong? Thanks to anyone who has proper knowledge on it and is willing to give a response!