Amp & Sub help

[teyteytey]

hi,

As a newbie I'v been planin to set a system to increase bass sounds on my original head unit usin a deck adaptor. Have chosen to buy a Kicker enclosed VCVR12 (400W rms @4o) and a Jbl 7001e (425W rms). What do u think, worth setting it for some non-pro system? Would the amp. be enough to have a good bass? Costs around 495$. The price is high cos im not livin in the states.

Thanx...

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[Jh8909 10+ year member]

What exactly are you asking here? are you asking is it a good set up and will sound loud? It will not be extremely loud but an obvious difference over stock yes.

And as for the amp its decent. the THD isn't that bad. Just make sure you get a 2-ohm DVC version of the CVR. So you can wire it up to a 4 ohm total load and get the 400 watts from the jbl.

Since your only running one sub too I would suggest a T-line box.

 

[teyteytey]

thanx "jh8909",

yes i mean will it be good enough for a sedan just for improving the bass of original sound system ? and all kinda advices. But i couldn't get the part , a 2 ohm sub will give 400W Rms. what if I wire a 4 ohm vcvr12 instead, won't I be able to get 400W Rms? What is the difference?

 

[Jh8909 10+ year member]

Because that amp puts out 400 at 4ohms and 700 at a 2 ohm total load. so if you wire your 4 ohm sub in series you would get an 8 ohm total load and if you wired it in parallel you would get a 2 ohm total load. you would then be overpowering the sub by 300 watts rms. so you should get a 2 ohm sub that way you can wire it up to a 4 ohm total load by wiring it in series. and that way your sub that can take 400 watts will be getting 400 watts.

 

[Jh8909 10+ year member]

oh and just remember the golden rule, wiring in series it is used to INCREASE the Ohm load and parallel is used to DECREASE the Ohm load. //content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[teyteytey]

Regarding your advice on dvc version of sub to connect with jbl 7001e, after a little increase on my budget, found the Kicker DCVR12 (two enclosed subwoofers). They have 800 Rms and I think they are driven at 2 ohm load. And the amp is 700 Rms. (I think this wil not be a problem unless I overload the subs using an amp that has higher Rms output- I mean people say an amp with an Rms capacity about 50-100% of the sub/s Rms outputs would be enough to drive the subs)

As a real freshman to caraudio technologoy I have got two more questions:

Do you think setting jbl7001e up with Kicker DCVR12 would I have any problems or any technical issues? Do you advise a 4awg or an 8awg wire to feed the amp and would a capacitor be necessary or useful (1farad I think)?

Thank you for your precious time and help...

Specs.:

Subs Model: Kicker DCVR12

Nominal Impedance [Zn], ohm [per enclosure] 2 or 4

Sensitivity [sPLo], dB @ 1W, 1m 98

Power Handling Watts, Peak (RMS) 1600 (800)

Enclosure Top Surface Depth, in (cm)13 15/16 (35.4)

Enclosure Bottom Surface Depth, in (cm)17 3/8 (44.1)

Enclosure Height, in (cm)16 (40.6)

Enclosure Width, in (cm) 32 1/2 (82.6)

Amp. : JBL GTO7001

700-Watt Mono Subwoofer Amplifier

• 425W RMS x 1 channel at 4 ohms and less than 1% THD + N*

• 700W RMS x 1 channel at 2 ohms and less than 1% THD + N*

• Signal-to-noise ratio: 80dBA

(reference 1W into 4 ohms)*

• Signal-to-noise ratio: 107dBA

(reference rated power into 4 ohms)

• THD + N: 0.02% (rated power @ 4 ohms)

• Built-in variable electronic crossover

• Dynamic Bass Optimization Circuit (DBO)

• Frequency response: 20Hz – 330Hz (–3dB)

• Maximum power: 700 Watts

• RCA low-level preamp inputs

• RCA low-level preamp outputs

• Remote bass level control included

• Dimensions (L x W x H):

15" x 10-3/8" x 2-1/8"

* CEA-2006A compliant

 

[Jh8909 10+ year member]

for your setup, if you so choose to go with the CVR's :crap:wire them like this:

(series/parallel) = 2 ohm load

Voice coils wired in series, speakers wired in parallel

Recommended Amplifier: Stable at 2 or 1 ohm mono

Make sure you get the 2 ohm versions of the cvrs that way you be able to get a final impedance of 2 ohms. and then your amp will be able to put out the 700 watts rms at 2 ohms.

run either 4 gauge or 0 gauge if you plan on going bigger eventually.

do not use a cap.

 

[Johnny Law.Lulz 5,000+ posts]

Incriminator Audio 187s, DC level 2's would both be better.

 

[Jh8909 10+ year member]

^^ there you go. theres just so many better subs that cvrs