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Old 15th June 2003, 03:51 PM   #11
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We really go off topic here, but for ones...this is so funny.

In our country we cannot walk the streets and make noise on Sundays. So the headphones would be for Sundays.: clown:

/Hugo - would rather wear DJ's flat-pack amp instead of an Aleph.
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Old 15th June 2003, 04:01 PM   #12
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Ok guys, games over, back to topic please
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Old 15th June 2003, 07:55 PM   #13
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quote

Ok guys, games over, back to topic please

WHY?

pinkmouse, go and read some of djbassamp's previous
threads.

All of which center around taking a cheap (or cheaper)
car amp that is not suitable in the first place for the job desired,
trying to modify it by boosting the power supply, and adding
output transistors, then stupidly trying to drive 2 ohm speakers
in bridge mode with many feet of speaker cable in between,
the resistance of such wire more than equals the resistance
of the speakers, and half of the power you did not have in
the first place disappears.

Why you think it gets so hot?
Burn your finger hot more like.

What is the only way to get rid of the heat.
1) forced air cooling (lots of it)
2) bigger (and i do mean huge) heatsinks.

Even running in pure class B mode 100% of the output
power goes into heat.

All this person cares about is the number of theoretical
watts divided by the $$$ spent. Bigger equals better.

In previous pictures he has shown his speakers.
900 watts. You gotta be kidding. I tracked down the
exact drivers he is using.

900 watts, and my you know what is 2 feet long too.

Everyone here has tried to help him.

You can't help a stump with an iq of 10!

By the way, B&W 800's and a krell MRC amp.
Now thats portable.


Spelling time

ani === any

tray === try

it will be good? (a declarative statement with a ?...?)

you mean Will it be good. or Will it be suitable.
The answer is easy.... NO

even the hebrew to english translators do a better job
than this.
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Old 15th June 2003, 08:00 PM   #14
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Kevin I understand the validity of your point and I agree with you. I am sure this thread will be moderated accordingly.....but slamming an indivual is never a way to get your point across effectively

DIRT®
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Old 15th June 2003, 08:04 PM   #15
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The first thru 10th time, ok

The 10th thru 20th time, maybe

By the time it gets to the 50th time you start looking
around for the 20lb sledge hammer.

If it was possible to take a $150 amplifier and throw
$100 in parts into it and end up with a $5000 amp, don't
you think everyone would be doing it?

The few people here that have built monster amps are
fully aware of what it takes to build such an item.
Including the gorilla to move it around once you are thru
building it.
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Old 15th June 2003, 08:32 PM   #16
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Kevin, I understand your frustrations, but a little politeness doesn't hurt.

After all, ( Cliche Alert ), as my Mum used to say-

" If you can't say anything nice, don't say anything at all!"

- and I think this applies well to the threads in question
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Old 15th June 2003, 08:48 PM   #17
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Hi Kevin,

Every member has his value, and every question too.
How simple or misspelled it might be.
At least Dj has the guts to ask the questions.
Maybe he just wants to show how proud he is with his mod-amp.
I for one wouldn't be able to write one single post in Hebrew.
How old are you, Kevin.
Think about the things you did at 17.

Sure I went off topic like a few other people, but none of us ever threw mud.

Don't, we all now Dj is Dj and we should accept and respect him like any other member.

I also learned to divide all those monster specs and watts by 10.

/Hugo - still would like to have some more info on DJ's amp.
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Old 15th June 2003, 08:56 PM   #18
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I wish we had a hundred Hugos on the forum. It would be a
much nicer place to be then. (Not that it is terribly bad, far
from it, people here are generally much more well behaved
than on many/most other forums on the web).
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Old 15th June 2003, 10:47 PM   #19
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Quote:
Originally posted by kevin gilmore

If it was possible to take a $150 amplifier and throw
$100 in parts into it and end up with a $5000 amp, don't
you think everyone would be doing it?

I agree that getting mad at DJ isn't the most prudent way to go. If that's your bag, baby, try the newsgroup rec.audio.opinion, and you'll see what childish whining is all about!

As for automotive amplifier specifications, remember that performance is inversely proportional to rated power...hehehehe.

DJ, be sure to browse around a bit in the "chip amp" section, especially for ideas in the "bang for the buck" area. Chips allow savings in the driver-power stage, though it isn't the "purist" route.

Bob
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Old 16th June 2003, 12:51 AM   #20
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quote

How old are you, Kevin.
Think about the things you did at 17.

Um physically i'm 49. Mentally who knows. (3,4... 10 tops)

What i did at 17. I got grounded for 2 years for
building a 30kw childrens band amplifier (CB)
Set a FCC truck on fire i did...
Lost my ham license for 10 years!


OK, maybe power inflation it was really about 10kw.
But it did turn the antenna red hot and melted it...

I'm not mad at djbassamp, I just wish he was willing
to listen to reason. He can buy 50 different car amps
and he still won't get what he wants, whatever that is.

The power output of an amp has little to do with the
number and size of the transistors. Or the size of the
power supply, or about 100 other things. Only in a properly
designed package with all the above can one achieve
those kind of power levels. No car amp can possibly
meet those power levels. It just can't from a physics
point of view, there is not enough battery or alternator
in a car, even most monster suv's to power something
that would really put out 1kw of total power.

Stupid idea alert.

Take said car power amp, push the input voltage to
16 or 17 volts. Add a pure class B output buffer with
some large number of power transistors and a beefy
power supply. And a heat sink, a really big one.
Voila lots and lots of raw power. The car power amp
will run relatively cool. Now you can run the thing
in bridge mode into 2 ohms all day long. For chuga boom
it would be great. For anything above a couple of khz
it would be very raw indeed.
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