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A First Watt Car Amp!!
A First Watt Car Amp!!
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Old 23rd March 2018, 12:29 PM   #21
plasnu is offline plasnu  United States
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When I was young, I had a Japanese boutique company made Class A car amp designed by ex-Nakamich guy, and it certainly made a difference. The case is a CNC milled heavy aluminum block.
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Old 23rd March 2018, 01:32 PM   #22
AudioLapDance is offline AudioLapDance  Canada
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Originally Posted by adason View Post
You heard those with car engine running?

What's noise floor got to do with frequency response, distortion, resonance, dynamics (turn it up), etc..

Maybe it can't be great on all specs but it can be better on most!

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Old 24th March 2018, 01:11 AM   #23
mpmarino is offline mpmarino  United States
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I'm all for nice car audio, especially if you spend a lot of time behind the windshield.

For true Class A at decent power levels, I think overall efficiency is the killer. How many alternators are you going to hang off the engine?

My understanding of the SS Class A amps is that they were very heavily biased AB amps (?)

Car audio is fun though!
Crazy Yankee.
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Old 24th March 2018, 02:40 PM   #24
phase is offline phase  United States
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Iíve been pretty happy with my old Nakamichi pa300 that I went through for in the car. I just replaced most of the caps with much better parts, cranked up the bias and made a fan for it.

My cars are much quieter now than in years past, and I hadnít considered it really until recently.

The jbl titanium tweeters sound great now, and the factory deck has a bit of dsp which helps with imaging or whatever, left the drivers in the oem locations, disconnected the old rear ones.

Sorry, not a Pass labs product, but thereís some historical significance I suppose.
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Old 25th March 2018, 03:14 AM   #25
Soundhappy is offline Soundhappy  France
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class A amplifiers with full range speakers
sings like angels in heaven
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Old 26th March 2018, 01:30 AM   #26
JZatopa is offline JZatopa  United States
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I actually planned building a 2 channel F5 amplifier back when i regularly worked in car audio. I ended up getting a power supply PCB, an old chassis and built F5 boards but never ended up building the amp. I was going to use it on a pair of image dynamics horns I had installed in my car.

Realistically unless you are running a fully active setup with compression horns or high sensitivity mids I would take a look at other options.
Knowledge is Power & Applied Knowledge is Freedom,
There is no higher religion than truth
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Old 28th March 2018, 12:14 AM   #27
phivates is offline phivates  United States
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I an old car audio guy. In the 80s I was installing the best stuff available, like Soundstream and scanspeak - the point is that if the automobile is the available space for a given individual to play what is desired at the level desired, then why would anyone have a problem with that?
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Old 14th April 2019, 06:41 PM   #28
adason is offline adason  United States
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Originally Posted by bigfishe View Post
So I'm building a sound quality car audio amp to compete.
I've build several First Watt amps( F1-F5) and was wondering what would be the easiest 8 channel amp for car audio? Given the fact that I will start with 12 volts and have to come up with a neat cooling scheme. I'm a kit builder not a Pro.
Show us what FirstWatt amps in cars you built bigfishe. Curious as to see the results.
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Old 14th April 2019, 06:45 PM   #29
Nelson Pass is offline Nelson Pass  United States
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A First Watt Car Amp!!
Originally Posted by nicoch58 View Post
Papa have done some stuff in the past for soundstream if I remember well
Much more fun with the Adcom car amplifiers.....

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Old 15th April 2019, 08:06 PM   #30
cubicincher is offline cubicincher  Germany
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I remember my first car audio setup I bought step by step when I was 18 years old (I was jobbing in my freetime to get the money):

Harman /Kardon CH161 with compact cassette

Harman / Kardon active crossover (I think it was named CXO-1)

2x Harman /Kardon CA260 poweramps
1x Harman /Kardon CA240 poweramp
MOREL silk dome mid/tweeter
ETON Midbass
JBL Subwoofer
This was in 1986 - I had such a lot of fun with it....
And this in my first, cheap FIAT. I think the value of the car audio system was higher than the value of the used car
Does it make sense? I can't answer this - I did it.

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