View Full Version : Sub advice!
i currently have
Kenwood KDC-5090R 4x47watt CD Head Unit
Kenwood KAC-729S 600watt 4-channel (150watt each) Amplifier
im soon to be buying
Pioneer TSA-6910 330watt 3-way 6x9s
but i want 2 12' Pioneer or Kenwwod Subs as well
but im unsure which ones to get, on my list are
Pioneer TSW-303 500watt 12" Sub ?60 each
Pioneer VCCS 600watt 12" Sub ?80 each
Kenwood KFC-W3005 700watt 12" Sub ?unsure
Pioneer TSW-305c 800watt 12" Sub ?unsure
which ones would be best compatable with the Amp?
Cheerz!
If it's a Kenwood amp then I'd go for the Kenwood sub(s) as I'd expect them to be more matched to the amp than any other brand.
if your looking for a sub try and match the rms wattage of both, etc if ur amps puttin out 250watts rms then get a sub as close to that as poss, max powers output ant rms output are two different things
Errr, better to get the sub with a higher rating that the amp or you're making it easier for yourself to blow it up, it doesn't matter if the sub can handle 100,000,000W RMS if the amp only put's out 200W RMS then that's what you're gonna get (200W).
But if you get the same (or close to) then you're running the risk of having the sub close it it's limits everytime you turn it up.
sorry jules i disagree. Subs can (usually) handle more than the RMS and you wanna make sure the sub is fed enough power to power it properly. IMO if any should be higher RMS its the amp channel powering the sub.
if u have an amp arouat 600 watt and u run a sub rated at 400 surley it aint gunna last very long
thats why ive picked these four subs!
Pioneer TSW-303 500watt 12" Sub ?60 each
Pioneer VCCS 600watt 12" Sub ?80 each
Kenwood KFC-W3005 700watt 12" Sub ?unsure
Pioneer TSW-305c 800watt 12" Sub ?unsure
i dont understand all that rms stuff, dont really know much about ICE, i plan to bridge the channels (2 channels per sub) and just run the 6x9s off the head unit!
is it possible to under power them?
RMS is complicated, its the Root Mean Square which is approximately 0.7 of its peak value. Don't need to know that though, all you need to know as Jules correctyly informed you and ZuG incorrectly informed you is that allow a bit of extra RMS in the sub but dont going paying stupid for something like 1800watt Peak.
Kenwoods are FAR FAR FAR FAR Better than the Pioneer.
Poineer dont drop they punch, kenwoods are really loud and really bassy.
Much better all round sub.
Get yoursled a couple of Kenny subs.
Bridge amp as uv correctly sed.
Run 6x9s of the HU as u sed, the subs will have it 300watt peak for 2 channels powering a 700 watt peak sub will still sound gud. and theres no chance on the face of this earth u'll blow da sub up.
It MAY slightly be running it under powered, or not to the subs full potential, but if you cant afford to keep buying a new set of subs everytime u blow dem up coz of overpowering them, then the set up you've got seems sensible.
In a nova one kenny will get him humming, let alone two, fuck mine that will humm mate.
i tried runnin a rockford punch 400 watt off a 100 watt amp and it was shite didnt run well at all so id say it is possible 2 under power em
rockfords are a lot more powerful than they say anyway, theyr a brilliant make.
woody1980
21-10-03, 08:39 PM
find out the rms of each sub 150 watts could be under powerin the sub [s]ffailin that get urself some front components to occupy the 2 spair channels ie kenwood dual mags then save 4 a 600w mono block kenny amp then go 4 the 800w kenny subs 1 farad digital cap ? sorted!
the Kenny subs it is then!
will i need a power cap to power two subs, or should it be ok?
also, the way ive been told to bridge it is - (is this right?)
sub1 - channels 1 and 3
sub2 - channels 2 and 4
lastly, ive mentioned i want Pioneer TSA-6910 330watt 3-way 6x9s, did Kenny do good speakers? i want to try and get them a bit more powerful as well, like 400watts or so, is this possible?
cheerz!
wot u wanna do is positive of channel one, negative of channel two for one sub.
positive of channel three negatrive of channel four for the other one.
and if ur runnin ur 6x9's off of ur hu, 330watts is plently.
and them 6x9's uv got r really good for treble.
kenwood tend to do 7x10's,
theyre also pretty good.
up to u matey but run 6x9s off hu rear channels, get a decent pair of tweeters for the front channels of the hu, run sub of a bridged amp and ur car will be a pounding with sounds.
the Kenny subs it is then!
will i need a power cap to power two subs, or should it be ok?
I'd go for the cap just incase.
also, the way ive been told to bridge it is - (is this right?)
sub1 - channels 1 and 3
sub2 - channels 2 and 4
Depends on the amp, it should be marked on the speaker connectors, but the way you've described is the usual way of doing it but best to make sure first.
lastly, ive mentioned i want Pioneer TSA-6910 330watt 3-way 6x9s, did Kenny do good speakers? i want to try and get them a bit more powerful as well, like 400watts or so, is this possible?
cheerz!
Don't have 6x9's at all, get some componants (Like Kenwoods) up front and maybe a pair of small Kenwood 2 ways in the parcle shelf supports for some rear fill (Will sound loads better this way).
if i use the + off c1, and the - off c2, cuold i use the - off c1 and the + off c2 for the second sub, therefore leaving c's 3 and 4 available even powerful 6x9s?
also, on a different note, if i do put the 6x9s throught the hu, i want to fit a cut off switch, so i can turn the amp (and subs) off and on when i like with all speakers remaing on, does that make sence? lol, would that work?
cheerz!
i was warned not 2 fit a switch 2 the amp as it sends a pulse thro the sub
dont know if its true tho am sure some 1 on here will clarify it
woody1980
23-10-03, 07:20 PM
no mate that wouldent work you can put the +c1 and -c2 then if ur amp will take it piggyback ur +off 1 sub to the + on the second sub and the same with ur- then it is wired parallel that should work or just wire them up normal =+1-1 =1sub 1 channel +2-2 =2nd sub channel2 leavin 3+4 4 6x9s
woody1980
23-10-03, 07:25 PM
epo sri its true it gives interference most good head units have a sub out and sub cutt off
if i use the + off c1, and the - off c2, cuold i use the - off c1 and the + off c2 for the second sub, therefore leaving c's 3 and 4 available even powerful 6x9s?
No.
also, on a different note, if i do put the 6x9s throught the hu, i want to fit a cut off switch, so i can turn the amp (and subs) off and on when i like with all speakers remaing on, does that make sence? lol, would that work?
cheerz!
Yeah, quite simple, just fit a switch to the remote power lead from your headunit to the amp.
no mate that wouldent work you can put the +c1 and -c2 then if ur amp will take it piggyback ur +off 1 sub to the + on the second sub and the same with ur- then it is wired parallel that should work or just wire them up normal =+1-1 =1sub 1 channel +2-2 =2nd sub channel2 leavin 3+4 4 6x9s
But by wiring them in parallel you'll be halving the output to each sub which means they won't be nowhere near as loud as they should (or could) be, It'll also drop the impedence down to 2 ohms and I expect the subs you'll be getting are designed for 4 ohms impedence (House stereo speakers are 8ohm which is why they sound so crap in a car).
Wire the subs to the amp as shown and the 6x9's from the headunit, most modern headunits have a high enough output nowadays anyway.
i think im complicating myself here, i crack under pressure, lol!
i think ill stick with
Kenwood Head Unit
Kenwood Tweaters (in replacement of speakers in dash)
Pioneer 33watt 6x9s (6x9s and tweaters off HU)
Kenwood amp
2x Kenwood subs
+c1 and -c2 for one sub
+c3 and -c4 for two sub
seems a waste of channels though...
Ive had another great idea, what abuot 3x Kenwood KFC-W3005 700watt 12" Subs?
or 2x Kennys and 1x Pioneer TSW-303 500watt 12" Sub?
but if so, how would this lot be wired up?
cheerz!
No no no!!! 3 subs - NO!!!
Stick with 2 subs at most in a Nova. Also don't wire the tweeters staright to the headunit unless you're going to be putting some kind of high pass filter (capacitor) inline, otherwise they'll get sub, mid and treble frequencys sound awful and probably won't last too long.
Stick with a simple set-up, I've given my advice on what you should go for in a earlier post in this thread, it's simple and bloody effective.
k, it was just as idea as i have a picture of a nova with 3 subs in the boot!
DONT DO THREE SUBS!
it's that simple. you'll have a n amp that will be so under powering the subs. like jules has said and a few others, stick one or two in.
i had two and it blows your ears off.
un1eash
03-11-03, 10:59 PM
You might find the amp simply isnt powerfull enough to run 2 subs, i used to have a kenwood amp and the bass boost only worked on channels 3-4. I'm runing 2 12" pioneer 304c's(600w) of a PG XS2200(250rms). I find this is more than enough power and much much better then the kenwood amp i use to have.
lol, ok, 2 subs it is then!
can you suggest a decent pair of tweeters, and oneof those little box thingsys to make sure only the high pitched sounds go to them?
cheerz!
if u do decide 2 run 3 subs
ebay have had sum powerfull amps goin my mate bought a 2000 watter for 50 notes and the wirin kit for 20 notes
thats a right gud deal bargin hunters a really bobby dazzler it is 2 :lol:
ive changed my mind about having 3 subs now, ill stick with the 2, 2 should be ample, plus, limited space in the boot as there will be a mini fridge in there too!
were is the best place to fix the amp?
cheerz!
where ever uve got space tbh
ive had em mounted under drivers seats back of sub boxes and back of me rear seats and never had ne probs
kewl, because i dont want the amp to be enclosed, and for it to get too hot and over heat the boot out, but i wil be having a fire extingiuser on alert as well, but that too wil be in the boot! :?
just ahd another idea, how about puttin each sub into stealth boxes, one either side, and attaching the amp to the back of the rear seat, therefore, making the spare wheel easy to get to, it would just involve cutting of the carpet and reshaping!
but, that leaves the question of were the fridge will go, any ideas!
is this a good idea?
cheerz!
the lad who had the cover nova on revs had his in the front passenger foot well
was it the same one with the water dispenser behind the buckets?
if so, i saw that at mpl last year, lok good, but id prefer to keep it in the boot!
cant remember mate it had all them graohics\logos on the rear side windows its was a purply colour i recon
that nova's on this weeks revrand bob torque show on men and motors mate its sat on 19's its got the fridge and even a water dispenser on it boot cos him 28k to do all the stuff he's done 2 it
thats mentle, but its worth it to be different and unique, as no one else would think to do that!
espesh to a baby nova!
i read as well that the buckets seats dont sit on any subframes, this ture?
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