weird thing

[BigPimpin91]

My 15" HDC3's were tuned to 35 and also peaked at 33 in my vehicle and I used a different calculator.

When I dropped from 2Ω to 1Ω on the same amp, subs and box, my peak rose to 36hz.

Nothing to be worried about, OP.

If I went by what my Bronco peaks at, all of my boxes are way below that.

Truck is ~64hz.

The Bronco probably also has a little peak at 33hz. It's the combination of the box and the car's frequency responce that causes a peak.

It's quite unusual that the peak jumps when you apply more power. Normally the peak drops the frequency.

Most likely due to the harmonic resonance at that frequency since half of 64 is ~32hz.