Originally Posted by indebtbassfreak
Yes i believe it should be quite noticeable below 20Hz. For some reason i thought sealed were the choices the OP was interested in otherwise the FV18 paper cone would have been my 1st recommendation under $2K along with the Triax if in good condition.
I emailed Nathan about the used 18.1 that was in the outlet and this was the specs.
Here are the basics;
Amplifier Features and specs;
PFC (power factor correction) switching power supply
Zero latency double precision DSP
High output current capability 35amps max
Frequency response 5-45khz -3db
S/N 100 db (unbalanced); 98 db (balanced)
slew rate 30V/us
Damping factor 20-200hz >1000
800 watts @1%THD
DSP presets(we set a fixed upper limit crossover in the DSP of 200hz, so it
must be run with a "sub out" signal for the sub/system crossover)
1; No EQ, natural response of driver and enclosure, designed to match room
giant in small/average rooms, maximum overall output capability.
2; +3db low shelf for larger rooms
3; +6db low shelf for Large rooms
4; +8db low shelf for anechoic flat response to 16hz
Driver features and specs;
1.65" max p-p Excursion
over 1" linear p-p Excursion
High force compact Neodymium Motor
4" Voice coil diameter
1200 watts AES power handling
Aluminum demodulating ring
High efficiency 98db/1watt
Cast aluminum frame
Enclosure features and specs;
Baltic birch ply construction
1.5" thick front baffle
Low turbulence slot port
18.5 Hz tuning
Response to 15 Hz
20.5" wide 24" deep 27" high
So like I said before. I don't think the FV18 will be a substantial upgrade over the 18.1. The driver used in the Funk is likely in the realm of IPAL quality by the specs and efficiency. With 800watts it's likely to hit 126db above 50hz.
The FV18 does offer deeper extension but it's likely going to give up output above 20hz to the 18.1. which is why I kept saying grab the Triax because it's not going to give up anything and offer deeper extension.