Ok total noob, but please stay with me..
Ok recently installed one Pioneer TS-SW3001S4 sub... This is a 4 ohm SVC speaker with 400w RMS and 1500max specs. I had an older Kenwood KAC 6202 400w amp to run the speaker till I could get something bigger.
The problem I'm having is that I want to purchase a bigger amp, lets say a Hi Fonics BRZ 1200 mono amp due to the amp putting out 450rms at 4ohms, but a local audio place tell me the ohm load will drop to 2 ohms (something about internally bridged) and the amps RMS 750 at 2 ohms..and damaging my speaker... All the research I have done does not add up to his conclusion
Keep in mind it's one 4ohm speaker 400rms and single voice coil
Does any of it make sense?