shud be one push, and the other one pull...

aaaa.... 2 subs = one +ve/-ve, the other one -ve/+ve, in other words:

either < < or > >

first sub connected normally +ve/-ve, so the cone move up-down, the other sub outside connected -ve/+ve to give down/up cone movement, so both cone move the same up-down and down-up.... thus the push-pull setting?

but between the two sub connected like <> must be air-tight (some kinda seal between them)

isobaric wont give u twice the power, but, it will save space... 2x8" subs in an isobaric would be the same as 1x8" sealed... Its not really an enclosure type but more like a woofer loading method.

*your idea of free-air sub like that is.... not very good... better get a small sub instead... try kicker substation 8"

This post has been edited by pokju: Feb 9 2006, 09:50 AM

no real diff except: flexibility of wiring options

single SVC sub with 4ohm can match with 4ohm amps
but, single DVC sub can either take 1/4/8ohm depends on ur amp

example mohawk red 10" red DVC sub > its 1/4ohm, (1 or 4 ohms) means each coil rated at 2ohm

so if u wire it parallel, it'll become 2+2=4ohm load on ur amp, but if u wire it in series > it'll become 2ohm divided by 2 coil = 1ohm load on ur amps (if ur amp can take 1ohm load, most prolly not)... its just like a simple wiring method when we were at kindergarten level > series vs parallel...

OR, if u use 2 dvc subs and got 1 unit of 4 channel amp, u can also use each channel for each voice coil = independent wiring... same like 1 dvc wired to 2 channel amp with 1 channel for each coil

watch ur amp rating, if its stable to 2ohm, dun try and wire a dvc sub (like that mohawk) to 1 ohm load = fo shure burn = confirm burn ur amp....

if, u got the money, and a bit hardcore = go for monoblock = dedicated amp designed mostly for subs....

Class D = mono amps draw less current, produce less heat, and are more efficient than conventional amp . They're specifically designed for low-frequency reproduction, built-in bass boost and low-pass filters.

*though u can use a 2-channel amp and bridge the amp to single channel operation for a single woofer.

*haih.. leteh menaip...

*edit: a single dvc is no way much better or much more powderful than a single svc with the same exact specs dvc created just for the flexibility of wiring... nowadays also got quad voice coil = qvc (not approved in ICE competition though )

bandpass =



a combination of a sealed and vented enclosure build for a reason, front (inside) act as LPF, filter mechanical noise generated by the woofer. another reason can add 2 woofer in a single (normal size) box (space constrain) ... many configuration also > single reflex bandpass (single sub), isobaric+single reflex (2 subs), three chamber (2subs) , and three chamber isobaric (4 subs)

*the mods just have to read and understand, and if u feels like in a DIY mode, try messing around with ur subs+amps experience does help

This post has been edited by pokju: Feb 11 2006, 07:19 AM

dude... found this on the net...