Ive built two Sub boxes... See i have two amps.. One is my regular home theatre amp. errr let me give u details of my setup.
Sony EX500 - 46 Inch LCD Bravia 3 Engine
DVD Sony DVD Player, HDMI , Digital Coax.
DVD player is connect to my HT amp via Monster Coax Digital Cable.
Home Thetre Amp - JVC 5 x 100 Watts RMS
Front Fisher 2 x 200 Watts Full Range Floor Standing Speakers (studio Standard)
Centre - Cerwin Vega VE-5C @ 150 Watts
Surround - Cerwin Vega Bookshelf VE-5M @ 125 Watts Each
In my home theatre AMP ive used crossover to cut frequencies below 100 Hz to all 5 Speakers and enabled subwoofer out - Mono Channel (using 1 x 2 RCA connector). Earlier all speakers were set to LARGE so crossover was not functional and i was getting minimum bass out of the subs.. till i decided to set speakers to small and set cross over to 100 hz. The frequency graph tht Mike gave showed a box freqencies upto 108 hz so ive set cross over to 100 hz otherwise i can cut speakers at 200 hz as well.
To power the twin Pioneer TS-W306DVC subs I have a Pioneer Stereo AMP rated at 100 Watts RMS @ 8 Ohms connected to my HT amp thru the sub out. Gain on pioneer amp is Half n it is good enuff for the time being.
Volume control, I'm using JVC and it increases sub out as i up the volume...Am on a budget at the moment but i know a good sub amp will do wonders to the bass output... but for the time being i feel the pioneer amp is doing pretty good than i had expected. especially on the low bass frequencies . not audible but it gives a strange push on my couch, n things placed in shelf say 18 feet away from the subs on opposite wall start vibrating. or perhaps its my living room accoustics (full concrete walls and porcelain tiled floors).
I am one happy dude !!! (for the time being tht is)
Thanks Mike.. you are the Man.... wouldnt have been possible without your help...really appreciate it.
I know ppl using expensive active subs 10 inches and 12 inches, but for some reason all they hear is bass boom n nothing on lower frequencies.. never knew this build will turn out to be so good. n best thing i havent spent a penny on amp or subs. Got precut MDF panels, Epoxy, Screws n Carpet, put in some hours n thts abt it
Nice build. And those subwoofer are quite a good bargain saw them at futureshop for 79$ CAN the other day. For a such low price you can easily grab two or more and power them with 500 watt you have a nice little setup that will fill small room and be enough for most people.
Im back guyzzzz with a word of advice for DIY people out there. I was using HIfi Stereo Integrated Amp to power the subs using a Y cable connected to sub out of my home theatre amp. I had an old 16 amp 12 volt dc power supply so I experimented a Class A 350 Watts (mono bridged 2 channel) amplifier to power both the sub woofers just to test how it sounds.
And to my surprise a Stereo Integrated Amplifier is no match to a car audio amp with built in cross over for sub bass frequencies. At very high volume the car amp trips cuz my power source which is only 16 amperes is not sufficient. The Car Amp is rated at 30 Amps DC 14.4 Volts for optimum output. I believe with just 16 amperes and 12 volts it may only be pumping out 120-150 Watt RMS but there is a world of difference when compared to the Integrated Stereo Amplifier.
So I did some browsing and came to the conclusion that a Digital Switching AC to DC power converter 14.4 Volts rated at 35 - 40 Amperes will be quite adequate to power my 2 channel Class A bridgeable 350 Watts RMS amplifier with buit in sub bass crossover.
Guyz either use a subwoofer plate amplifier or a car Audio Amplifier (provided you can pump in enough dc amperes) if you want optimum performance from your subwoofers.
What does a Digital Switching AC to DC power converter 14.4 Volts rated at 35 - 40 Amperes cost?
I have a 105A 12-14.5v custom built PSU sitting right here, apparently the dude who got it made payed 800NZD, I'm just borrowing it at the moment, too bad I have to give it back now . It's so awesome, and it's for sale now, too bad I can't afford it, I want it to stay right here. Haha
. It's so awesome, and it's for sale now, too bad I can't afford it, I want it to stay right here. Haha
