what are these, is this the low pass filter i have on my nemesis, or something else altogether, been told i need one for my ported box, but dont have one at the moment, nothing installed yet tho, however going to be installed soon...thx

they stop a sub playing freq below its F3 ive set mine to 25hz just to protect teh sub from 1 hz tones etc

where do u get these from, or do they come on the hu, i have a alpine 9815rb one..

no they come on the amps

mm, do they come on the nemesis, i see one for low pass filter, and gain, maybe not looked hard enough...any ideas..

Not all amps have them, and the Nemesis are pretty cheaply made, and may not have one... They are pretty important though, and, as Woosey ays, need to be set a few hz below tuning frequency

damn,lol, so what would u do in my situation, i know ppl use nemesis's a lot, do they not use the subsonic flter then....can u use something on a hu, to cut out those frequencies to the sub..eg under 25hz..

You can't use it on the HU, cos' it doesn't come with one... the amp usually comes with a 'subsonic' filter, if your nemesis doesn't have one just buy yourself an aftermarket add-on..

Personally, I'd look for some sort of active crossover I could use, that incorporated a subsonic filter

active crossover,anyone out there with nemesis, what do u use, is an active crossover allow u to go active an all that as well...really wish i knew this b4,lol...as would have gone for an amp with this on,,is this the case with only ported boxes, what happens if u got for a sealed one, do u have to worry about subsoic filters etc...

u dont REALLY need it, just be sensible and not play 25hz tones at full voulme..

for everyday normal music u wont even need it.
i ran mine without it and i know dumdum did for ages as well with no probs.

:)

A bass cube has one - I got mine for 50 quid...

I personally wouldn't chance it, having seen what it can do to subs in the past with not having one. Kinda rules out you playing any bass-tracks too :(

live life dangerously rich :clown:

yeah, its not good! when i had the VP2s they never had a subsonic, and i had the SE bottom out at about 10hz at full whack(600wrms!) :s

wasnt very nice!

Mine is set at 27 :( I think thats too high now

so is there nothing i can do with the hu at all, to make it sort of minimise the effect, if not wheres a good place to get crossover, what im thinking is, can i maybe use the nemesis for a while, then maybe just sell the nemesis, and get a better amp later, like pretty soon, and swap em, how easy si it to remove an amp from a set up, not to hard is it...

PM sent m8 :)