Got my box done yesterday, got my sub in today. FI Q 15" D2

Its running off a DLS A6 1200watts @ 1ohm.

Box is about 4.05cf after displacement, tune to 32hz.

When i play it about 1/2 way, when the car is on or off, on mid high level, the sub stops working. Than i lower the volume, than it plays.

I dont know if its my amp, or my tunning.

Im not use to tunning vented enclosures...

So any advice is appreciated!

I dont know where exactly to start my tunning on my amp, and my crossovers on my HU.

ULTIMATE series A6. A 1 ohm stable monoblock that´s perfect for SPL. Extremely powerful power supply. The output power in 4 ohms are 500 thrue RMS watts. A cooling fan is built in but the amplifier also provides a built-in fan control for external cooling fan.

Built-in, variable 50-125 Hz low-pass filter for subwoofers plus a 25 Hz subsonic filter with an 18 dB/octave slope. Dual power terminals where you can connect dual power feeds or a DLS Power Cap. Extra features are a phase control variable 0-180 degrees continiously.

A remote sub level control is included. Adjust the sub level and phase from the front seat!

- RMS output power @ 13,8V DC feed

Specifications

Number of channels 1

Amplifier class AB

Output power in 4 ohm 500 W

Output power in 2 ohm 870 W

Mono bridge mode 4 ohm N/A

Output power in 1 ohm 1200 W

Damping factor > 200

S/N ratio, A-weighted > 100 dB

Frequency range 10 Hz - 125 Hz

Input sensitivity 0,2 - 7 V

Input impedance, high level N/A

Input impedance > 10 kohm

High pass filter Subsonic: 25 Hz

Low pass filter 50-125 Hz

External cooling fan terminal 1

Dual DC inputs 1

Remote base level control 1

Remote phase shift control 1

Integrated fan 1

Power consumption (idle) 0,6 A

Power consumption (max) 140 A

Rec. power cable Minimum 2AWG / 33 mm2

Fuses 4 x 35 A

Dimension (W x D x H) 410 x 240 x 73 mm (16,15 x 9,45 x 2,87 inch)

Weight 6,2 kg ( 13,67 lb)

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