Dual 12" Subwoofers in '07 yaris

[rszabla]

Hello fellow yaris goers! Just showin off our first project on the 07 hatchback. We slapped two 12" subs in the back in our custom built ported enclosure along with a shiny new head unit. Will post more pics soon :cool:

[derickveliz2]

Nice,

That amp looks so tiny for the 12's

D.

[SAV912]

Wooh. That is way, way too much thump for our tiny cars. But if it suits you, rock on.

-C

[fnkngrv]

guess you either have your groceries delivered or you have another car to get them? lol

[Spidermandud]

^ His groceries hover above the sound-wave haha.

[TPA5]

Wow, I thought my one 12" was excessive. I am very wrong, apparently. Looks good.

[Viperoni]

Good stuff OP!

I've got 3x 12's running off of 1200w in my Echo, and if I was any dumber, I'd go bigger.
By dumber I mean worsen the hearing loss I already have lol

I'm sure I could massage a pair of 18's in the back if I really really wanted to.

[why?]

that's insane. 1 150 watt 10 gave me a constant headache. Had a friend run 4 10's, could here him 1/4 mile away. I think i would die.

[sqcomp]

Wanna borrow a real amp or two to power those subs?

http://i720.photobucket.com/albums/ww203/sqcomp/2007%20Toyota%20Yaris%20S/IMG_0057.jpg

I can guarantee that you'll have more that 1200 Watts...

[TOLMACH]

Wanna borrow a real amp or two to power those subs?

http://i720.photobucket.com/albums/ww203/sqcomp/2007%20Toyota%20Yaris%20S/IMG_0057.jpg

I can guarantee that you'll have more that 1200 Watts...

1200 speaker level watts is roughly 2300-2600 electric watts (AB class amp) needed to be fed to the amplifier which is 190-216 amperes..

you still sure you can guarantee he can get his "more than 1200 watts"?

[sqcomp]

You know what...yes you can get more than 1200 Watts out of either of those amplifiers.

I was also being jovial and messing around. Unless I'm missing something in translation with your post, you're trying to bring this down. don't do it. It's not nice.

[TOLMACH]

my point is he would have to carry a diesel generator in his trunk to get his 1200w from one amp .. forget about two or more ))

[sqcomp]

I must know something you don't...because I can make the amps put out more than 1200 Watts and not even have to worry.

Actually, anyone can. There's no magic juice, I promise.

By your thinking and calculation, ANY A/B class amplifier would have to have said diesel generator to make 1200 Watts. Even the OP's small amp.

I'll ask you, what do you think my total current draw is with all three of those amplifiers?

[09sedan]

enough to make the factory alternator tear its self off the engine and run away :bellyroll:

[TOLMACH]

enough to make the factory alternator tear its self off the engine and run away :bellyroll:

)))))

[why?]

enough to make the factory alternator tear its self off the engine and run away :bellyroll:

that doesn't take much with the yaris. when i was running a lightweight battery with the 150 watt amp my alternator desperately wanted to run away.

[TOLMACH]

I must know something you don't...because I can make the amps put out more than 1200 Watts and not even have to worry.

Actually, anyone can. There's no magic juice, I promise.

By your thinking and calculation, ANY A/B class amplifier would have to have said diesel generator to make 1200 Watts. Even the OP's small amp.

I'll ask you, what do you think my total current draw is with all three of those amplifiers?

i sincerely do not care what is the total current draw in your car

laws of physics do not work in some cars .. I've seen that before and prefer not to argue with their owners

Btw I am a big fan of nicely built ab amps.. using this bro (Classic) in my car
http://rammaudio.com/products-0.htm

[why?]

i sincerely do not care what is the total current draw in your car

laws of physics do not work in some cars .. I've seen that before and prefer not to argue with their owners

Btw I am a big fan of nicely built ab amps.. using this bro (Classic) in my car
http://rammaudio.com/products-0.htm

dude now you're just being a jerk. Lay off it.

[sqcomp]

??"laws of physics do not work in some cars"?? Seriously?

Current draw is a vital link to Ohms law. Of course you don't care... it's because you're mistaken.

-Read the signature-

Question to all, not just our esoteric sage, what happens when the alternator can't put out more than it's rated output? This will lead to the answer...

[TOLMACH]

??"laws of physics do not work in some cars"?? Seriously?

Current draw is a vital link to Ohms law. Of course you don't care... it's because you're mistaken.

-Read the signature-

Question to all, not just our esoteric sage, what happens when the alternator can't put out more than it's rated output? This will lead to the answer...


Interesting topic.. I do not know what happens to alternator

Questions to you:

1. How much electricity (in watts) do you need to supply to your DD amp to get 1200 wats at amp's speaker outputs?

2. What is your alternators's output (in amperes) at 3000 RPM ?

SPL guys use stacks of optima batteries to obtain the necessary short term current, which we ignore as this is not the case.. What other variables am I missing to achieve these notorious 1200watts?

[TOLMACH]

Updated calculations re Q1 above:
Producer seems to advise the electrical efficiency of 65%

http://www.ddaudio.com/products/mobile-audio/amplifiers/full-range-amplifiers/s-series/s2b.aspx

1200 W/ 0.65 = 1846 watts
1846 watts / 14 volts = 132 amperes that are need to get 1200 W

So, what do we do to get our 1200 watts?

[sqcomp]

SPL guys use batteries...

Your're getting warm brilliant one.

Now pour through my posts and figure out what kind of batteries I'm using. Now, answer the question. What happens when the alternator can't put out any more current?

Yes, I can put out 1200 Watts.

[mazilla]

...meanwhile, the OP is like "WTF is going on in my thread?"

[sqcomp]

Truth...We got off on a tangent regarding where current comes from.

This could go a lot further into the rabbit hole as well. There are quite a lot of variables into maximum output of amplifiers that we haven't talked about.

Oh, here's the answer:

"As long as the engine is running, all of the power for the accessories is delivered by the alternator. The battery is actually a load on the charging system. The only time that the battery would supply power with the engine running is when the current capacity of the alternator is exceeded or when engine is at a very low idle. "

Tolms still tearing through posts looking for what kind of batteries I use...

I'll save him the trouble:

http://i720.photobucket.com/albums/ww203/sqcomp/2007%20Toyota%20Yaris%20S/DDSystem.png

That's been updated actually. I'm no longer using the secondary battery. The primary sits at a hair over 12.8 Volts and charges from the alty at anywhere from 13.9 to 14.3 Volts depending on the temperature.

Description:

◦SPP1200 includes removable brass battery posts for installation flexibility.
◦12v Dry Cell Valve Regulated Lead Acid Battery (AGM)
◦SPP Series Batteries are good for over 400 full discharge cycles.
◦Internal resistance: <4.0 mOhms = Ability to quickly deliver power. The lower the number the faster the delivery.
◦20 hour rate: 2.20A/44Ah
◦5 hour rate: 7.48A/37.4Ah
◦1/2 hour rate:55A/27.5Ah
◦5 Second Cranking Amps: 1200A
◦CCA: 560A
◦Watts: 2400
◦Peak Discharge: >2600 A

[vten]

im learning as well.... so u don't really need to replace the stock alternator to hook up more let say 1000W rms total ? as long as you use that stinger battery ?

by the way that L1 Pro SE is sexay !!!

[why?]

im learning as well.... so u don't really need to replace the stock alternator to hook up more let say 1000W rms total ? as long as you use that stinger battery ?

by the way that L1 Pro SE is sexay !!!

I am almost 100% sure SqComp is running an aftermarket or rewound alternator.

[TOLMACH]

im learning as well.... so u don't really need to replace the stock alternator to hook up more let say 1000W rms total ? as long as you use that stinger battery ?

by the way that L1 Pro SE is sexay !!!

replacing alternator is a must in case you need high total rms .. comp is merely trying to show that he can get his 1200 watts for like 45 seconds

[why?]

replacing alternator is a must in case you need high total rms .. comp is merely trying to show that he can get his 1200 watts for like 45 seconds

not 45 seconds... 1200 watts isn't even a lot. Two alpine type X's take 2000, and there are single subs that can take more. You can run them all day long with the right setup.

It is only when you get to insane SPL levels that you are talking about running the system for short periods of time.Like this. (http://blog.thecar.com.my/car-collection-car-evolution/demo-cars-for-pioneer-company-pioneeredge-audio-spl-truck) Totally insane.

[12 yaris]

WHAT? I can't hear anything

[12 yaris]

What? I can't hear anything.
I'm buying stock in Beltone!

[why?]

i here a few thousand watts in subs gives a real nice massage during the drive.

[sickpuppy1]

As I recall, SQ does have an aftermarket alternator. In case you havent noticed, he does not do stuff halfway. He learns,plans and executes. He's not here to brag, but to pass on knoweldge. Yes, I have alot of respect, but its based on a few years of reading here and audio forums.

[sqcomp]

The truth of it all is that most of us are only drawing tons of current for very short intervals. I can tell you this much, on our stock alty, the only time I would get dimming was when I had a bass track in and was railing on the volume.

Watching my Voltage readout like a hawk, I'd see the Voltage drop down to something like lower 12's. That bothers me. The current would still be supplied BUT... This is why one would buy an aftermarket alternator.

IIRC, 1200 Watts is almost irrelevant. Mos of our listening is done within the 10 Watt output range. Why do I use monster surfboard amps? A throwback to the 90's and the transient power capabilities. Think of the Top Gear analogy of racing a Prius versus an M3. The Prius (A smaller A/B amp) is efficient but a racing speeds is failed the whole time...whereas the M3 (a big A/B amp) is less efficient but doesn't even break a sweat at the Prius pace around the track. It has more to easily give.

Just my thoughts.

[sqcomp]

@ Why - info have some video of a near 160 dB street car..."massage"? It was more like a continuous donkey kick!

[why?]

@ Why - info have some video of a near 160 dB street car..."massage"? It was more like a continuous donkey kick!

lol, i bet it would be. My best friend when i was in high school listened to gansta rap. At differing points he had 2 or 3 12's, 4 10's, and I think he even had a 15' or two at one point. I highly doubt he ever got anywhere near 160 db's, but he used to drive my sister to school and she always said it was a good massage. He also had a fetish for Phoenix Gold amps.

[sqcomp]

This one was a Kia Spectra hatch with ten vented 10" woofers...two altys and Tolm's favorite, a bank of batteries.

[why?]

This one was a Kia Spectra hatch with ten vented 10" woofers...two altys and Tolm's favorite, a bank of batteries.

I get a headache just thinking about that. Amazing pressure. If they get much stronger they're going to need to be called sonic weapons.

[sqcomp]

I'm telling you, sitting in it while it was playing...I almost lost my breath each time the bass line hit.

The two videos I have don't do the experience justice. We played around with...get this...modified Justin bieber, Celine dion, and some Toby Keith...we tweaked the bass in the tracks to be stupid loud. Imagine rolling up on someone, playing a totally girlie track and no matter what they tried, they couldn't out do you. It was a big middle finger to the "regular" thought of bass songs.

[_S7V7N_]

Wouldn't you be able to take a DMM set it to VAC and connect it to you speaker outputs on your sub amp ? Then with that reading do the math on how many watts are comming out of the amp. Then from there calculate the current ? just wondering ?

[sqcomp]

Just out of curiosity, give it a try and let us know what your initial reading is and what part of Ohm's Law you use to convert...

I'm thinking that this is a great learning opportunity!

[Viperoni]

The truth of it all is that most of us are only drawing tons of current for very short intervals. I can tell you this much, on our stock alty, the only time I would get dimming was when I had a bass track in and was railing on the volume.


You're absolutely right. Even though I'm a basshead with the volume knob, I only get light dimming in the Echo. Sundown SAE-1200d running 3 Mach5Audio 12's.

When I had an Earthquake PHD3 in my old Saturn with an 80amp alternator, I had just a bit more dimming ;)

[_S7V7N_]

This is a nice little calculator http://trussinme.com/Apps/audio/voltagecalc/default.asp

The math behind it http://forum.sounddomain.com/ubbthreads.php?ubb=showflat&Number=1294233&page=1#Post1294233

Info courtesy of CA.com

I just finished my Big 3 today subs should be here this week, i'll post some numbers up sometime this next week, Maybe a vid !!!