Author Topic: Its big! Car audio amplifier...  (Read 34457 times)

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Offline Jon86

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Re: Its big! Car audio amplifier...
« Reply #75 on: October 31, 2013, 05:00:54 pm »
That amp is just a toy.... This ,http://www.pknc.com/3phase_eng.html, is an amp, 2 x 20Kw into 2.66ohms, all in a 1U rack mount case.

Holy crap, I want one!
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Offline Six_Shooter

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Re: Its big! Car audio amplifier...
« Reply #76 on: November 18, 2013, 05:50:24 am »
Why are the "pros" even thinking about 12V when at those power levels, high voltage more than makes sense?

And while there's certainly not many "proper" applications for such a powerful amp in a car, there are still a few. Like a mobile PA system.

Because rules in every car audio competition league/organization dictate no more than 16V systems in most cases, some restrict, or at least used to, down to 14.4V. If they didn't it would be a lot easier to get more power.

Reminds me of my younger days in competition car audio. My favorite amps were Orion "red" HCCA amps (not sure how well they are made these days - I haven't been involved in competition audio since the mid 90's), we would wire a number of 15" or 18" sub drivers in parallel - not uncommon to put < 1 ohm loads on them. The hardest thing was supplying enough current quickly enough to avoid clipping. It was normal practice to install special alternators along with a bank of deep-cycle marine batteries for the power system, along with a bank of supercaps very near to the amplifier hardware.

At least once in their life everyone should get to experience 150+ dB of raw bass while sitting in the cab of one of those SPL show cars. It is a unique sensation - there is nothing else like it in the world. (and don't be an idiot and ignore the deafness warnings - wear the proper ear protection)

Yep, that was also back when I got into Car Audio, right around 1992. The HCCAs were the hot ticket. I wanted one of the 2100 HHCAs so badly, a "200 watt" amplifier that was around 24" long, 10" wide and 6" tall. ;) I was also fond of the 2250SX I think it was, in the same heatsink, only black, and wasn't a "high current" amplifier.

Then there was the MS series from Phoenix Gold, I still haven't found anything comparable, and I have some Phoenix Gold Xenon stuff in my crawl space. :/

Peak value measured during 10ms, 1ms, or 0.1ms, or some stupid non-real world value..

I refer to those as "ILS Ratings" - If Lightning Strikes.

Phoenix Gold used to be known for putting REAL output ratings on their products, but they were bought out and have been caught up in the same ILS ratings that most other companies put on their products to sell them. The good manufacturers will still publish the real ratings, usually at low THD and sometimes with a full range or proper range for that component frequency range.

Even though I am very much into efficiency, both in space and power used by anything, I still can't help to like the look of surf board amplifiers, must be that guy thing...
 

Offline zapta

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Re: Its big! Car audio amplifier...
« Reply #77 on: November 18, 2013, 06:48:31 am »
That amp is just a toy.... This ,http://www.pknc.com/3phase_eng.html, is an amp, 2 x 20Kw into 2.66ohms, all in a 1U rack mount case.

But does it come with Monster cables?
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Offline AmmoJammo

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Re: Its big! Car audio amplifier...
« Reply #78 on: September 11, 2014, 10:20:49 pm »
Hopefully getting these amps installed soon! Finally!

Working on the sub box at the moment to house these subs.

 

Offline nanofrog

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Re: Its big! Car audio amplifier...
« Reply #79 on: September 11, 2014, 10:40:16 pm »
Hopefully getting these amps installed soon! Finally!

Working on the sub box at the moment to house these subs.
Doing SPL competition? Or just want to be heard half a mile away?  :o  :P
 

Offline RobertoLG

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Re: Its big! Car audio amplifier...
« Reply #80 on: September 11, 2014, 10:49:21 pm »
would be fun playing some dark electro :D
 

Offline SirNick

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Re: Its big! Car audio amplifier...
« Reply #81 on: September 12, 2014, 07:24:10 pm »
I'm a big fan of this one:

http://www.parts-express.com/tang-band-w6-1139si-6-1-2-subwoofer--264-832



I've built two boxes for this:

One is a tapped horn good down to 38Hz, with a home-built 50W amp.  More than enough volume for a small office, and goes deeper than the room's geometry makes it practical to hear anyway.

The other is a ported box tuned to ~30Hz, just to see what it could do.    It runs out of Xmax fairly easily, but it's impressive how much output you can get from a 6.5" driver.  Two of them would be "enough" for music at reasonable levels in a home.  Not quite enough huevos rancheros for home theater though.
 

Offline jlmoon

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Re: Its big! Car audio amplifier...
« Reply #82 on: September 12, 2014, 08:46:47 pm »
I'm still looking for the miniature therm o-nuclear reactor that is going to provide the required energy/joules to drive the incredibly and physically large loads this so called 20KW amp system is driving.  Ok, is it under the seat, back floor pan where the spare was.. or where?  The currents, heating and all the other parameters would be out the roof on this one.  <<< Still impossible, physics rules!>>>

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Offline jlmoon

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Re: Its big! Car audio amplifier...
« Reply #83 on: September 12, 2014, 08:51:38 pm »
That amp is just a toy.... This ,http://www.pknc.com/3phase_eng.html, is an amp, 2 x 20Kw into 2.66ohms, all in a 1U rack mount case.

Holy crap, I want one!

Now we're talking.. 3phase power.. oh yes!!!  Look at the output current and voltage on that bad boy.  Not for a young player!

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Offline AmmoJammo

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Re: Its big! Car audio amplifier...
« Reply #84 on: September 12, 2014, 09:09:43 pm »
I'm still looking for the miniature therm o-nuclear reactor that is going to provide the required energy/joules to drive the incredibly and physically large loads this so called 20KW amp system is driving.  Ok, is it under the seat, back floor pan where the spare was.. or where?  The currents, heating and all the other parameters would be out the roof on this one.  <<< Still impossible, physics rules!>>>

Battery box is going under the car to house six 130ah, 1000cca deep cycle AGM batteries.


(the cardboard box pictured above was just to see how much space I had available)

Also plan to have a 7th battery the same under the bonnet, and possible an 8th in the back next to the box.

So, 1040ah worth of batteries, plus the 300amp alternator.
 

Offline NiHaoMike

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Re: Its big! Car audio amplifier...
« Reply #85 on: September 12, 2014, 09:28:34 pm »
Take a look at some LiFePO4 batteries. They're very popular with DIY EV builders and are much cheaper than they used to be.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

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Offline Strada916

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Re: Its big! Car audio amplifier...
« Reply #86 on: September 12, 2014, 11:32:45 pm »
What value on watt are wt
The Bone, the Off-White, the Ivory or the Beige?
 

Offline SirNick

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Re: Its big! Car audio amplifier...
« Reply #87 on: September 12, 2014, 11:36:01 pm »
Uh, watt?
 

Offline Towger

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Re: Its big! Car audio amplifier...
« Reply #88 on: September 13, 2014, 08:13:31 am »
What you need is a tesla battery. Should give enough power for 3 or 4 hours.
Btw I did not think cars still used spring leaf suspension!
 

Offline nanofrog

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Re: Its big! Car audio amplifier...
« Reply #89 on: September 13, 2014, 11:46:01 am »
What you need is a tesla battery. Should give enough power for 3 or 4 hours.
Btw I did not think cars still used spring leaf suspension!
Perhaps it's a truck or SUV (still use leaf spring suspensions)?
 

Offline AmmoJammo

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Re: Its big! Car audio amplifier...
« Reply #90 on: September 13, 2014, 11:58:07 am »
Its a 2005 Ford Falcon wagon.

 

Offline VK5RC

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Re: Its big! Car audio amplifier...
« Reply #91 on: September 13, 2014, 12:11:40 pm »
Dumb question, is the aim SPL or power consumption, if the former, aren't  the speakers/enclosures always the weak link?
Whoah! Watch where that landed we might need it later.
 

Offline AmmoJammo

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Re: Its big! Car audio amplifier...
« Reply #92 on: September 13, 2014, 01:02:08 pm »
Aim is "musical" spl... its intended to play music, but get loud..
Its not so much the speakers that let spl down, "anything" can get loud.
 

Offline Yago

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Re: Its big! Car audio amplifier...
« Reply #93 on: September 13, 2014, 01:33:52 pm »
Do I wear the Dave Jones or Desmond Morris hat?

 

Offline tom66

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Re: Its big! Car audio amplifier...
« Reply #94 on: September 13, 2014, 03:34:00 pm »
When we get EVs more commonly appearing on the streets I'm sure we'll see nutters tapping into the 400VDC battery pack... feel like 50kW into an audio system?
 

Offline GK

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Re: Its big! Car audio amplifier...
« Reply #95 on: September 14, 2014, 01:15:32 am »
I finally found cause to introduce myself to my new neighbor, by slamming on the fence and calling him a fucking moron at the limit of my lungs. Half the neighborhood must have heard it. Ten o'clock at night, "fullie sik bro" car sub woofer blaring something not even discernible as music, right opposite my kitchen window, which is rattling; can't even properly hear the TV in the living room, FFS. Has been nice a quiet since though.

   
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Offline Uup

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Re: Its big! Car audio amplifier...
« Reply #96 on: September 16, 2014, 04:52:15 am »



[ In a "Crocodile Dundee" voice ]

That's not a capacitor...

This is a capacitor!




« Last Edit: September 16, 2014, 05:15:41 am by Uup »
Ununpentium
 

Offline bktemp

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Re: Its big! Car audio amplifier...
« Reply #97 on: September 16, 2014, 06:28:25 am »



[ In a "Crocodile Dundee" voice ]

That's not a capacitor...

This is a capacitor!



That's also not a capacitor...

This is a capacitor!
 

Online T3sl4co1l

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Re: Its big! Car audio amplifier...
« Reply #98 on: September 16, 2014, 09:29:36 am »
That's also not a capacitor...

This is a capacitor!

Oh, please.

Tim
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Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline nitro2k01

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Re: Its big! Car audio amplifier...
« Reply #99 on: September 16, 2014, 10:17:36 am »
Oh, please.

Tim
While the capacitance is massive, I'm concerned about all arcing that happens all the time. On the plus side, the self-healing is excellent.
Whoa! How the hell did Dave know that Bob is my uncle? Amazing!
 


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