FV15HP has two port openings. With two ports open, the max extension is 18hz and the rumble filter should be set to ON/2 position. In the following is the frequency response when extension filter is set to 14hz and low damping.
Fig 1.0 - FV15HP Frequency response chart in AVR/12 low pass filter setting and both ports open
To achieve lower group delay and lower bass extension at 12hz, customer can plug one of the ports and set the rumble filter position to OFF/1. In the following is the resulting frequency response with extension filter set to 14hz and low damping.
Fig 1.1 - FV15HP Frequency response chart in AVR/12 low pass filter setting and one port open
The level matching between two port mode and one port mode is very good as shown in the following figure when the volume setting is unchanged and the rumble filter setting is at ON/2 and OFF/1, respectively.
Fig 1.2 - FV15HP level matching level two port and one port modes when the rumble filter is set ON/2 and OFF/1, respectively
FV15HP also provides an LFE mode that extends the upper end to 200hz as shown below.
Fig 1.3 - FV15HP LFE mode response with two port
|Driver||DS1510 15'' high excursion with custom sensing coil|
|Driver materials||Black anodized aluminum with rubber surround|
|Cast aluminum basket|
|Copper flux de-modulation shorting rings|
|Amplifier||600 RMS class H patented servo controlled|
|Dimensions||18''(W) x 24'' (H )x 24''(D) - (26'' D with grille and heatsink)|
|Shipping Weight||115 lbs|
|Frequency Response||12 - 200 Hz (-2 dB @ 17 Hz, -6db@12hz) with LFE input|
|12 - 90 Hz ((-2 dB @ 17 Hz, -6db@12hz) with LINE IN input|
|Multi-tune||18hz (2 port) and 12hz (1 port)|
|Crossover slope||Selectable 12 or 24 dB / octave (PEQ)|
|Crossover range (Low pass)||25 - 100 Hz|
|Rumble Filter (High pass )||18 Hz 18 dB / octave for two port tuning|
|Phase adjustment||0 - 180 degrees continuously variable|
|Bass damping factor settings||high (Q=0.5), med (Q=0.7), and low (Q=1.1)|
|Finishes||Available in black matte vinyl or black oak vinyl|