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29 ltd audio boost,???help

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  #1  
Old 10-25-2009, 02:18 PM
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Question 29 ltd audio boost,???help


hello to all
i've read some where here but i can't seem to find the info
on audio boost quality for a 29 ltd classic changing some caps by the audio chip.???
or beefing up that section for better audio ouput
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Old 10-25-2009, 02:26 PM
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Cobra 29 High Power mod with 2sc1969 transistor

Ther are all kinds of mods found on the internet for the Cobra 29 LTD. But this link is in-house. Has lotsa goodies in it. Enjoy...
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Old 10-25-2009, 02:47 PM
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Originally Posted by Rob KI6USW View Post
Cobra 29 High Power mod with 2sc1969 transistor

Ther are all kinds of mods found on the internet for the Cobra 29 LTD. But this link is in-house. Has lotsa goodies in it. Enjoy...
i'm not looking for a power mod or variable power i lready had that done a while ago i want to boost the audio chip section not power section
i want to make it sound room filling audio not audio coming in front of you.???
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Old 10-25-2009, 03:12 PM
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There are some audio mods on these pages - if you bother to read them!
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What gear do I use?
BASE: Icom IC-718 & GAP Titan DX, Yaesu FT-8800R & Diamond X50A, Magnum OmegaForce S45 & IMAX 2000 w/Astatic D104/TUP9.
MOBILE: Galaxy DX99V & Wilson 1000 w/Astatic D104-M2, Yaesu FT-8800R & Diamond NR-770.
"...The 444 in San Jose CA; the Central Gold Coast..."
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Old 10-25-2009, 03:32 PM
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From what it sounds like, you are wanting a sort of 'surround sound' affect from a 4 watt audio output audio chip. Like what I've heard out of my computer's sound card and multiple speakers? Good luck and forgetabout it. Ain't gonna happen with the components in a typical radio (of any kind, CB/ham/etc.). I would suggest looking for some sort of 'surround sound' amplifier that could be fed by the radio's speaker jack. I'd bet there would certainly be a market for such a thingy, but probably a limited one.
At home you could probably feed the radio into your computer's sound card. Mobile, some AM/FM/stereo radios have sound input jacks.
I think I'd give it a test run before plunking down much money for such a thingy, I have tried it and wasn't exactly thrilled with the results. But then, I don't expect 'surround sound' out of a 'communications' radio to start with, it really doesn't help anything. Oh well...
- 'Doc
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Old 10-25-2009, 04:31 PM
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From what it sounds like, you are wanting a sort of 'surround sound' affect from a 4 watt audio output audio chip. Like what I've heard out of my computer's sound card and multiple speakers? Good luck and forgetabout it. Ain't gonna happen with the components in a typical radio (of any kind, CB/ham/etc.). I would suggest looking for some sort of 'surround sound' amplifier that could be fed by the radio's speaker jack. I'd bet there would certainly be a market for such a thingy, but probably a limited one.
At home you could probably feed the radio into your computer's sound card. Mobile, some AM/FM/stereo radios have sound input jacks.
I think I'd give it a test run before plunking down much money for such a thingy, I have tried it and wasn't exactly thrilled with the results. But then, I don't expect 'surround sound' out of a 'communications' radio to start with, it really doesn't help anything. Oh well...
- 'Doc
ok i'm getting no where here let me try it this way i want to boost my audio quality to the receiving end meaning when others hear my radio like wow
that 29 ltd driving that 1x4 your are running sounds like 5000 watts. hope this explain it better
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Old 10-25-2009, 05:03 PM
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A decent mic and a great antenna -along with modest power- are going to give you that with the Cobra 29. Cobra's are good for that; just be sure that the radio is doing about 2 watts 'dead key' before it goes into your amp.

Perhaps what you are looking for is a 'Top Gun Modulator'; which I think can be found here:
TGT Modulator

Is that what you mean; is that what you are looking for?
Getting a 'big sound' isn't a difficult thing to do, so long as you have money and want to pay for it. The older tube-radios have a great sound - for instance. But some solid state radios do very well also.
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"...The 444 in San Jose CA; the Central Gold Coast..."

Last edited by Rob KI6USW; 10-25-2009 at 06:03 PM.
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Old 10-25-2009, 05:15 PM
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Okay, I just got it backwards, nothing new about that.
It really just depends on what you consider 'good' audio, and that's very varuable, sort of. Basically, it means processing the audio that goes into the radio. That's another one of those 'things', probably as many answers as there are people trying to do it. It also sort of boils down to how much money you wanna throw at it. Probably the simplest/cheapest way is a new/different mic. The other end of that money spectrum is what the 'audiophiles' indulge in. Some times they spend more money than I paid for my truck+radio+who knows what else! It also comes down to how much bandwidth the resulting signal requires. I don't have any specific recommendation, I ain't going there!
Have fun with it till it ain't fun no more!
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This is one'a my "mis-spelling" days. I'm tired of making corrections. I ain't getting graded on this, am I?
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Old 10-25-2009, 05:46 PM
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thanks for the replies i just want that big radio sound like some of them mobilee you hear in skip
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Old 10-25-2009, 06:09 PM
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Quote:
Originally Posted by 1iwilly View Post
thanks for the replies i just want that big radio sound like some of them mobilee you hear in skip
Some of those guys are using the same radio you have. Maybe a Astatic D-104/M6 mic with it (nice choice - btw). But then they may also be using an 800 watt amp to get massively-modulated sound. Some of that has to do where they are as well. Eg: On top of a hill or just on high ground. Skip can work in your favor - or it can work against you. That depends upon conditions in the ionosphere and one's own location.
Variables, variables, variables...
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What gear do I use?
BASE: Icom IC-718 & GAP Titan DX, Yaesu FT-8800R & Diamond X50A, Magnum OmegaForce S45 & IMAX 2000 w/Astatic D104/TUP9.
MOBILE: Galaxy DX99V & Wilson 1000 w/Astatic D104-M2, Yaesu FT-8800R & Diamond NR-770.
"...The 444 in San Jose CA; the Central Gold Coast..."
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