ketansethi1987
Active Member
Which Sub would you prefer Active or Passive? And why????
I would prefer a passive sub:
1. Placement - Can get a long sub wire and place the sub anywhere in the room
2. The amp of the sub may be used to power additional speakers/subs
3. If the amp goes bad it can be replaced easily. I guess it would cost a lot to get the inbuilt amp in an active sub repaired
4. Can be cost effective if an AVR already has option to attach a sub directly
1. This is possible with active sub also. The cable cost may be a little high. One can even use a wireless transmitter/receiver to connect to the sub.
2. This point is not clear. How will you use amp of sub to use with other speakers?
3. Nope. Infact amp in AVR is costly and getting a replacement is very tough.
4. It may be cost effective but at the sacrifice of audio quality. Remember the avr transformer needs to power all the 5 channels plus the sub.
Boils down to the Driver size, Enclosure type, Enclosure size, T/S parameters, Amp. Port tuning, Application etc etc
Your question is far too generic there are many other variables that one needs to factor in
2. We can just take the wire of the sub out and put in the wire of the any other speaker. We can even attach two subs to the amp. Two passives + one amp might be better and cost effective than two actives (not very sure about this)
3. I did not mean amp in the AVR I meant a dedicated low cost amp for the sub only. Do not know about the branded ones but locally manufactured are easily available here. The combination can sound better than a car's sub and can beat any similar priced woofer of 5.1 systems. I have not auditioned the hi end range like Wharfedale, Cambridge etc. Planing to audition Sonodyne soon as it is near my factory (Okhla).
4. This point is for the AVR already purchased and having direct sub out for a passive sub. DO not know whether such AVRs are available.
Coming to passive subs do we have many options like the active ones? Any Indian manufacturer?
PS: I am not debating just discussing.
Well yes theoretically it possible . However
1.
Most if not all subwoofer drivers have a 4 ohm impedance. if you connect two passive subwoofers in series. The impedance will drop down to 2 ohms. Not too sure how many locally made cheap amps can handle such a difficult load .
If its 2 channel amp. then it should be fine . However the amp should be capable to handle 4 ohms load
2.
A subwoofer is supposed to receive 100 / 80 hz and below frequencies. Besides the Amp to drive the passive sub woofers you would need to get a Active crossover as well to filter a full range frequency from going to your Subwoofer.
So either your preamp if capable of doing this or you would need to invest in a active crossover. Behringer comes to mind. They are cost effective and well designed
3.
If your AVR has the sub out for a passive subwoofer. you would need to see how much power it dishes out .
on the basis of that you can buy a affordable 8" / 10" / 12" driver from Peerless etc and build a cabinet and hook it up to your AVR.
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