Kicker C12 4ohm Sub newbie questions

9553 Views 46 Replies 3 Participants Last post by kolyani4, Nov 5, 2009

kolyani4

Discussion Starter · Sep 28, 2009 (Edited)

Hello to all, i"m here about a 2 days, reading all post that regards to subwoofers

i"m planing to add a subwoofer to my bedroom ( about 3 x 4 meters ).
what i have for now:
2 x Wharfedale Athlantic 400SE floor speakers
1 x Kenwood KRF-V5100 Receiver/Amplifier ( 6ohm version ) connected to PC via SDPIF to Realtek on-board soundcard.

for now, i want to add a subwoofer to my system.
i searched the Israel market, and found thats its no subwoofer for HT, only the cars one,
i bought KICKER C12 4 ohm subwoofer driver. and start reading its tech spec, i found that kicker recommends 35-99 liters box for sealed. i dont know realy what this mean, what is recommended size for it ?
and second thing im stuck in selection between do a DIY sealed box, or go to store and buy car sealed or ported box (about a 35-40 liters ) ?

the price of boxes in store are from 60$ for sealed/ported one 35-40 liters.
the carpenter wants about a 70-80$ for this (17mm MDF ) job excluding the assembling the box.

if i select to DIY box i decided to do a stealth box under my bed ( 200cm x 160 cm ) size of box whill be something like 18cm ( free space from top of underbed to floor -2cm ) x 60cm x 65cm. this will fit nice under my bed, but i dont know if this sound good and give me a good bass ?

3th thing that i don't know how to connect it to my amplifier in good way ?

1. connect it in parallel of the one (left or right channel )
2. connect it in series to one of the channel
3. buy Noname car 4 bridgeable channel amplifier power it from dedicated 400w PC power supply and connect it to subwoofer line out in kenwood amplifier ( pass thought, not any cut offs

only mix lows from channels).

i think the "3" give a more options ( crossover, phase )

my prefers are music (70%, movies (20%) , games ( 10% )

sorry for my English i"m Russian from Israel

waiting for all answers.

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21 - 40 of 47 Posts

kolyani4

Discussion Starter · #21 · Oct 3, 2009

can anyone tell me if this box will good for me ?
i dont know what size of it, but i think its about 30-40 liters

i have to options to those, one is Closet and one is porter box, but what frequency on port tuning, i don't known.

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Mike P.

· #22 · Oct 3, 2009

Without knowing what the net volume of the box is and the tuning frequency, it's impossible to predict.

kolyani4

Discussion Starter · #23 · Oct 3, 2009

Mike P. said:
Without knowing what the net volume of the box is and the tuning frequency, it's impossible to predict.

the volume of box about 30-40 liters. but what is tuning frequency i dont know.
i readed the review of kicker C12 and its says that best closed box for it its about 32-35 liters. for flat response of frequency.

i leaved the idea of puting sub under my bed.

kolyani4

Discussion Starter · #24 · Oct 3, 2009 (Edited)

today my friend give me he's old box
i mesured it end found it that its a 51 liters and port tuning frequency is 29.5herz ( 10cm x 45cm )
did it will be good to put my kicker in this box ?

and he give me a car amplifier something from china ( warrenty ended in 2003

) CONCORD 4720GT 700W
its has a 4 channel its can bright 2 channels, i think its have a 50-60W RMS for each channel, in brighe its will be a 100watt i think, its will be ok, no ?

Mike P.

· #25 · Oct 4, 2009

Hopefully the amp has a high pass filter around 25 hz to protect the sub from bottoming out.

kolyani4

Discussion Starter · #26 · Oct 4, 2009

Mike P. said:
Hopefully the amp has a high pass filter around 25 hz to protect the sub from bottoming out.

how i can check this ?
on input of its has a TL494cn.
and has 4 ic chips of TL074CN
and one KIA4558P chip.

its has cross over, low or high pass filter from 40-400hz.

Mike P.

· #27 · Oct 4, 2009

how i can check this ?

It should say in the manual if the amp has a high pass filter and at what frequency.

kolyani4

Discussion Starter · #28 · Oct 4, 2009

Mike P. said:
It should say in the manual if the amp has a high pass filter and at what frequency.

i have no manual for it, i think its not have this filter.

kolyani4

Discussion Starter · #29 · Oct 5, 2009

can i check visualy if it has a highpass filter ( this is subsonic, right ? )
i checked the manual for kicker c12, its says that i can install c12 driver to ported box without subsonic filter, but power handling is 75watt maximum.

kolyani4

Discussion Starter · #30 · Oct 5, 2009 (Edited)

Thanks to all, today i received my kicker C12 , installed it in the box that i say, now its powers from kenwood HT amplifier, the bass are amazing ( for me ), later i will try to power it from car amplifier, i need to buy some cables

i will post some pics later.

LivingLoud12

· #31 · Oct 10, 2009

nice to hear that.....

kolyani4

Discussion Starter · #32 · Oct 11, 2009

LivingLoud12 said:
nice to hear that.....

now its powered from the car amp ( powered by Thermaltake 400W PSU ) the sound are good, turned the crossover about a 200hz. now im thinking about buying another car amplifier. bacouse this is too old ( about 2002-2003 year )

i will post some pics later, i need to get memory card for my camera

LivingLoud12

· #33 · Oct 11, 2009

try getting a class d amp with subsonic and all that...........

kolyani4

Discussion Starter · #34 · Oct 11, 2009 (Edited)

LivingLoud12 said:
try getting a class d amp with subsonic and all that...........

i dont know how to determine what class is it ?
im about to buy someting up to 150$
like this
http://www.lanzar.com/itempage.asp?model=VIBE211

did anyone know why 2 channel amps are more expensive that 4 channel ?

did the subsonic filter is important ?

LivingLoud12

· #35 · Oct 12, 2009

this will be aperfect amp for your sub.....plus this is a clas d amp

http://cgi.ebay.com/Lanzar-VIBE7001...ewItemQQptZCar_Amplifiers?hash=item1c0c94eb52

kolyani4

Discussion Starter · #36 · Oct 13, 2009

LivingLoud12 said:
this will be aperfect amp for your sub.....plus this is a clas d amp

http://cgi.ebay.com/Lanzar-VIBE7001...ewItemQQptZCar_Amplifiers?hash=item1c0c94eb52

Thanks, but this cant be shipped to israel

i will try to search israel market.

LivingLoud12

· #37 · Oct 13, 2009

that sucks......

kolyani4

Discussion Starter · #38 · Oct 13, 2009

LivingLoud12 said:
that sucks......

yes

i checked in israel the lowest price for mono amplifier (Lightning Audio B2.250.1 ) is 200$
and for Rockford P3001 its 230$, may be letter i will buy it. now im thinking about to get a coaxial cable from receiver to amplifier, becouse when i turn lights in my house from sub sounds low freqency CLICK, if i light up flurocent lamp its sound a few time until lamp light up completely

.

kolyani4

Discussion Starter · #39 · Oct 20, 2009

i bought MAC-AUDIO ZX2000 Amplifier, in 14 days i will receive it.

Mike P.

· #40 · Oct 21, 2009

Post some pics of your sub!

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