Purchased a Fi BL 15 D2 and a Rockford Fosgate T1000-1bdCP. Birth sheet has the amp at 1640W RMS at 1 ohm and 14.4V. YouTube videos of the Fi BL 15 with varying types of amps, not many over the rated power of 1500W, show it potentially flexing doors/windshields/etc. I know every vehicle is different, but even their subs have some excursion to them and mine just bangs, not much movement from the sub.
Car usually sits around 13.8-14.1V. Sony XAV-70BT headunit with I believe 4V outputs. It only has 1 Sub out so I had to run to walmart and grab some Philips brand Y splitter to plug both RCA's in. Sub is wired down to 1 Ohm, volt meter showed 1.3 at the speaker wire before plugging into amp so I think it's correct.
Gain set with a DD-1 (SoundSolutionsAudio says it's useless) at volume 47 out of 50 which is where the DD-1 showed clipping. Gain barely up a 1/4 turn. Maybe less. Box is 3.55 cubes after displacements tuned to 31.8Hz according to my box builder. Infrasonic filter is on at the amp which is 28Hz I believe. Subwoofer level is max at +6 at the headunit. No bass boost, LPF at 80Hz on Headunit. EQ set to flat and no other options on or turned up. Door speaker levels turned down -6 at the headunit.
At volume 40 or so, it bangs, but being 7 off from "max" according to DD-1, it's not doing anything extravagant and the sub doesn't have any excursion worth talking about...it doesn't move too much. It is still new which could play a part in that. The only anomaly I can think of is the cheap Philips RCA Splitter I'm using at the headunit. Maybe it can't handle the 4V? I'm not sure and I'd have to look up how to read the voltage at the RCA's with a meter.
Sub and port are facing IN the cabin and not toward the trunk with seats down. Sub is about 4-5 feet from driver's seat. Using 14 Gauge wire on the sub to the box and 8 gauge from the box to the amp. Voltage barely drops if at all, which I expected it to drop. 160A stock alternator and an XS Power D3400 as the only battery in the car. Amp is grounded to the battery as the battery is in the trunk stock on my car.
Am I just expecting too much? Thanks in advance for any advice.
Car usually sits around 13.8-14.1V. Sony XAV-70BT headunit with I believe 4V outputs. It only has 1 Sub out so I had to run to walmart and grab some Philips brand Y splitter to plug both RCA's in. Sub is wired down to 1 Ohm, volt meter showed 1.3 at the speaker wire before plugging into amp so I think it's correct.
Gain set with a DD-1 (SoundSolutionsAudio says it's useless) at volume 47 out of 50 which is where the DD-1 showed clipping. Gain barely up a 1/4 turn. Maybe less. Box is 3.55 cubes after displacements tuned to 31.8Hz according to my box builder. Infrasonic filter is on at the amp which is 28Hz I believe. Subwoofer level is max at +6 at the headunit. No bass boost, LPF at 80Hz on Headunit. EQ set to flat and no other options on or turned up. Door speaker levels turned down -6 at the headunit.
At volume 40 or so, it bangs, but being 7 off from "max" according to DD-1, it's not doing anything extravagant and the sub doesn't have any excursion worth talking about...it doesn't move too much. It is still new which could play a part in that. The only anomaly I can think of is the cheap Philips RCA Splitter I'm using at the headunit. Maybe it can't handle the 4V? I'm not sure and I'd have to look up how to read the voltage at the RCA's with a meter.
Sub and port are facing IN the cabin and not toward the trunk with seats down. Sub is about 4-5 feet from driver's seat. Using 14 Gauge wire on the sub to the box and 8 gauge from the box to the amp. Voltage barely drops if at all, which I expected it to drop. 160A stock alternator and an XS Power D3400 as the only battery in the car. Amp is grounded to the battery as the battery is in the trunk stock on my car.
Am I just expecting too much? Thanks in advance for any advice.