I have this monoblock amp but what sub to run?

[xenonkuraz]

Power Output RMS @ 4 ohms 500 W x 1
Power Output RMS @ 2 ohms 800 W x 1
Frequency Response 20 Hz ? 1 kHz
Crossover (Butterworth) LP 50 ? 200 Hz
Bass EQ @ 45 Hz: 0 - 12 dB
S/N Ration >90 dB

those are the specs. Nakamichi PA-1500.

What's the best sub I could run on it?

[xenonkuraz]

Power Output RMS @ 1 ohm 1200 W x 1


forgot to mention that...woops

[A.G.System]

With specs like that why dont you run 2x12" subs running at 2 ohm?

As long as your sub is around 300 - 350W RMS it will run sweet as. only reason i say to run a total of 700w RMS is because the specs you quoted are at 14v, and as most cars only run at 12 - 13.4v at best you are going to be down on power than they quote.

Either way it will thump :)

Other question is do you want SPL or SQ?

[DC5TYPER]

MTX T7500 12inch SLEDGEHAMMER sub and Box.

RRP $450-500.

Feed it 800W RMS @ 2ohm and it will give out a lot of bass from one sub and medium sized slot ported box.

[dj_s2k]

Agree with A.G. U should ask urself whether u want more SQ or SPL. I guess this would also come down to what kind of music u lsten to. Depending on what type of music u listen to will come the question of size. 10" 12" or 15". IMO 15" is a bit too big and is not respnsove enough for my taste but it will produce nice deep bass notes.

If you don't want to spend too much money and ur after SQ I recommend that u get a JL w3v3 or even an Alpine Type-R. Else for SPL go MTX or Kicker CVR.

That's my 2 cents :)

[xenonkuraz]

Whats the difference between SQ and SPL? sorry I'm an audio nub!

[dj_s2k]

SQ = Sound quality
SPL = Sound pressure level

Basically if your planning on getting nice deep clean bass notes then your pretty much up for sound quality. However, if you wanna crank the living jebus out of your system then its SPL pretty much. Most people are after a more SQ system but honestly depends on your taste in music and what your after. Also another thing to consider with subs is the box if you plan on getting it in a box and not custom installed or free-to-air. Ported box will produce slightly more bass than sealed boxes but the bass notes being hit won't be as "tight" as those given by sealed boxes. this will once again come down to what kind of music you listen to mainly.

As an example I'm mainly into electro and heavy metal and i'm also after SQ rather than SPL. So for that setup I got myself a JL Audio 10" w6v2 in a custom sealed box. Electro and heavy metal have heaps of quick beats (double kicks and what nots) so I needed responsiveness over deeper bass notes so ideally it was a 10" sub for me and a sealed box. SQ wise i've always been a fan of JL so went with their w6v2 subs.

[A.G.System]

To expand on what DJ says.
My personal system runs:

2x12" JBL GTO Dual Voice subs in a Twin Sealed box.
7x10 Kenwoods in the rear custom shelf set to mid bass and highs
8" JBL GTO Mids in the front doors in custom pods
5" JBL GTO splits in dash with tweeters up on dash.

Plus
700wrms JBL GTO mono for subs
350wrms JBL GT 2 chan for front 8s
380wrms JBL GT 4 chan for 7x10s and splits.
Running off a Kenwood X9006IP Head Unit (5v preouts ftw)

All in all the car pushes 140 db+

I could push it higher but i want music clarity over pure bass only.

And when i say clarity i mean anything from Jungle to Metal.

Basically guys that listen to music want an SQ system
and guys that want a shatter the windows 30hz track monster want SPL.

If you can find a good mid point then you can have the best of both but its deciding what point you go from SQ - SPL only you can choose.

This is why we are asking for some basic info on things such as what kinda music do you mainly listen too, what are you trying to achieve with this stereo and how much you willing to spend? (remember its not just the speakers and the likes themselves its also the wiring and stuff to take into account when it comes to price).

[DC5TYPER]

To expand on what DJ says.
My personal system runs:

2x12" JBL GTO Dual Voice subs in a Twin Sealed box.
7x10 Kenwoods in the rear custom shelf set to mid bass and highs
8" JBL GTO Mids in the front doors in custom pods
5" JBL GTO splits in dash with tweeters up on dash.

Plus
700wrms JBL GTO mono for subs
350wrms JBL GT 2 chan for front 8s
380wrms JBL GT 4 chan for 7x10s and splits.
Running off a Kenwood X9006IP Head Unit (5v preouts ftw)

All in all the car pushes 140 db+

I could push it higher but i want music clarity over pure bass only.

And when i say clarity i mean anything from Jungle to Metal.

Basically guys that listen to music want an SQ system
and guys that want a shatter the windows 30hz track monster want SPL.

If you can find a good mid point then you can have the best of both but its deciding what point you go from SQ - SPL only you can choose.

This is why we are asking for some basic info on things such as what kinda music do you mainly listen too, what are you trying to achieve with this stereo and how much you willing to spend? (remember its not just the speakers and the likes themselves its also the wiring and stuff to take into account when it comes to price).

Nice JBL collection there!

What part numbers? I'm quiet interested in what your using exactly. I sell JBL everyday. :D

[arverson]

very first question shouldve been "whats your budget"

[cc1206]

^ too true, what's your budget?

SQ wise, you'd do a lot better with one quality sub than 2 poorer quality subs
SPL wise... probably not what you're after?

Either way, don't be a dick and think you're the greatest cranking your music at the lights !!! :)

[xenonkuraz]

Ideally I wouldn't want to spend more than $300 for a subwoofer + box. I don't mind second hand. I'm more than happy with the sound/bass produced from my stock 6"/6x9" speakers. As long as there is no distortion I am happy. But considering I have access to the above mentioned amp...I thought it might be fun to get a subwoofer. I mainly listen to rnb/house/contemporary.

It seems that I am after SQ.

Thanks for the input guys, much appreciated!

[dj_s2k]

and guys that want a shatter the windows 30hz track monster want SPL.



LoL too true AG. And i've got a funny one for you. One of the ex-managers at my workplace convinced a customer to buy a 15" Kicker L7 Solo baric for his Telstar. Next day the guy came back wanting to exchange it cause he cracked his rear windscreen. Was HI-LARIOUS !! :D

[dj_s2k]

Hmmmmm for around $300 maybe an Alpine Type-S ? I've hooked one up at work and it doesn't sound too bad at all in a sealed box. Alpine subs produce quite tight bass notes and given decent cabling and power will produce clean ones at that. Getting the dual 2 ohm and connecting it in series will give u 4 ohms I believe and from memory the Alpine Type-S sub is rated around the 300-350 watt mark rms?

Watch those 6x9's though. Depending on how you filter your signals it may distort the bass a lil. Try and HP those 6x9's.

[EGJOE]

techno = as many 10' as you can fit
R&b = 12'

[cc1206]

You can get a perfectly fine Alpine Type R + Box for $300. Regardless of the coil config (dual 4 ohm or dual 2 ohm), since the Type R is rated at 500wrms (though it can handle a lot more) you'll be fine wiring it in parallel or series.

Just so you understand, a DVC (Dual voice coil sub) has 2 voice coils, each voice coil has a positive and negative input and their respective impedance. So in a SVC (single voice coil) sub, you will have 1 positive and 1 negative input. Usually SVC are 4ohms, so you'll have no problem wiring this up.

Alpine Type S are rated at 300wrms, there are a few 2nd hand going around and can be had for around $150-$200 with a box.

Since you're aiming for SQ, Alpine would probably best your best bet. If you want to be different, Rockford P1 or P2 subs are also very punchy. Eclipse subs are also very good... why don't you head up to a reputable car audio specialist (not jb/autobarn/wow/strathfield and the likes) and have a listen. In the end, it's all up to what YOU want.

Hope i helped a bit :) and good luck

[Frost_FD]

So i guess my 12" Type R is SQ then running off PDX 600w mono block.

[dj_s2k]

So i guess my 12" Type R is SQ then running off PDX 600w mono block.

given that you've got quality cabling hooked up and your system is properly tuned then its probably safe to say its a fairly decent SQ sub.

half of a SQ system is the tuning thats involved so its not only about the gear. Even if you have top-notch gear but isn't tuned then it'll still sound like shite.

On the topic of PDX amps how would you rate it out of curiousity ?

[arverson]

i wouldnt classify the type r as a sq sub.. still decent tho

if you're aiming for true SQ be prepared to sped ALOT of time tuning. i hate when people ask "are you aiming for SQ or SPL" when the majoirty of the time its just a daily driver...

[keniirox]

IDMAX =) .. good sq plus pretty strong spl

[Frost_FD]

I cant really rate my PDX amp since its the only one i have had. But compared to my mates system it cranks much better then their type S and the other guy with 2 12" xplodes.

[Frost_FD]

Hi Guys,

What size wire would be the best from amp to sub, i may have to upgrade it as it was the only wire i had at the time.

I think it is 8 gauge atm.

[keniirox]

8 gauge is all good.

think its <1.5k rms for 8 gauge so your all good there

[Frost_FD]

Correcting my self, my speaker wire is 19 gauge... i think i should change...

[A.G.System]

Yeah if connecting an amp to a sub then i would recommend running 14 gauge wire to the amp, If just amp to splits then if under 60wrms then 19 will be ok, if over this then id look at getting some better quality streetwire style cables at around 16 gauge.

Just dont go over this too much as too thick a wire will cause resistance just as much as too thin wire can.

[Frost_FD]

Thanks will be getting thicker wire @ 10 bucks a meter yikes.

Lucky i only need 1m

[A.G.System]

Wait till you have to cable up 3 amps, 2 sets of front speakers, 1 set of rear speakers and then 2x subs also.

Lets just say the cable in my car is almost as expensive as my head unit :)

But its worth doing it right first time instead of doing it bits here and there.

[doosra]

Quick Question

I'm looking at buying a mono block amp. There are 2 amps i'm looking at.

The power output is as follows:

Fusion EN-AM60010
Max Power Rating (Watts) - 600
Ratings per Channel - 170 Watts RMS x1 Channel @ 4 ohms: 250 Watts @ 2 ohms

Clarion APX1301
420 W of Maximum Music Power
400 W × 1 into 2 Ohms, 20 Hz ~ 20 kHz @ <0.1 % THD
300 W × 1 into 4 Ohms, 20 Hz ~ 20 kHz @ <0.1 % THD

Do you think these are enough to run 1 x 12" JBL Sub.. ? Or should I be looking for something with more power?

Which one would you recommend?

[2MPRS]

u havent given us the the rms of the clarion

[NightKids]

Where did you aquire this monoblock from? Sounds like it costs a fortune!

[Joe Bellissimo]

The Nakamichi amp should not be run at 1 ohm. Some of them fail so I wouldn't run it below 2 ohm. If your looking for SQ and you have that much power to play with I would up the budget. Its a nice amp and its just dying to drive a really nice sub LOL!

[blabla]

Quick Question

I'm looking at buying a mono block amp. There are 2 amps i'm looking at.

The power output is as follows:

Fusion EN-AM60010
Max Power Rating (Watts) - 600
Ratings per Channel - 170 Watts RMS x1 Channel @ 4 ohms: 250 Watts @ 2 ohms

Clarion APX1301
420 W of Maximum Music Power
400 W × 1 into 2 Ohms, 20 Hz ~ 20 kHz @ <0.1 % THD
300 W × 1 into 4 Ohms, 20 Hz ~ 20 kHz @ <0.1 % THD

Do you think these are enough to run 1 x 12" JBL Sub.. ? Or should I be looking for something with more power?

Which one would you recommend?


DONT BUY THE CLARION APX1301!!!!
My bro bought the same amp in 3months it shit it pants and alll it was running a 12inch vibe black air. the sub is abt 4 yrs old. If you want a clarion amp try and find the apx1300 this is what i am running and hit it for abt 3-4yrs and not one issue. the design and the quality of the above is shocking!!!!. the apx1300 is a max of 400wrms at 2 ohms and 300wrms @4 ohm

So like i said if you want a clarion amp look at the apx1300

[doosra]

i actually had a budget 2 ch BOSS amp lying around so i just used that.. i didn't really want to spend alot of money.. and it seems to do a decent job in powering my 12" JBL sub..

[amurray]

what type of car mate? the size and type of box will depend on what type of car.. also what type of music do u listen to?

hit up www.ddaudiodirect.com.au there subs are awesome :) even like 2 little 8" subs in the right box would hammer...