Caps, cap, capacitor, direct inject, bass, lows, hi fi, hifi, hi-fi, high fidelity, mod, mods, modification, upgrade, widen, wide audio, Goldfinger, Cobra, Galaxy, Ranger
ricky252
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by ricky252 » Fri Jan 10, 2014 2:09 pm
I have this cobra 1000gtl I like to use sometimes and just want to open up the RX for HiFi. Can you point me in the right direction Goldfinger please.
252 in Ga.
Goldfinger
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by Goldfinger » Fri Jan 10, 2014 2:57 pm
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ricky252
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by ricky252 » Fri Jan 10, 2014 6:12 pm
Well I did not know this. I thought the board was same as 89gtl. Thanks Goldfinger, I will get in there and have a look.
252 in Ga.
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by Goldfinger » Fri Jan 10, 2014 8:11 pm
Well, neither the 1000 or the 89GTL is exactly like a 29 because of the clock and other things, but in the main part of the transmitter/receiver circuits it is the same design, so should extrapolate OK for the receive upgrade.
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ricky252
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Posts: 26 Joined: Sun Oct 20, 2013 3:07 pm
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by ricky252 » Fri Jan 10, 2014 8:49 pm
hmm, the layout of the main board is diff. C33 is right next to vr2 and C40 not far from that. I changed them to 2.2uf caps just to see. pulled .01uf out. Made no diff. put it back.
252 in Ga.
ricky252
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Posts: 26 Joined: Sun Oct 20, 2013 3:07 pm
Location: United States
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by ricky252 » Fri Jan 10, 2014 8:51 pm
252 in Ga.
ricky252
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Posts: 26 Joined: Sun Oct 20, 2013 3:07 pm
Location: United States
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by ricky252 » Fri Jan 10, 2014 8:58 pm
If you dont mind could you take a look at the sch. in the link. I did try it like a 29, no good. I have to be spoon fed lol. Thank You
252 in Ga.
Goldfinger
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by Goldfinger » Sat Jan 11, 2014 2:02 pm
heh, my bad. The added circuitry shifted the numbers a little
Change C31 and C38 to 2.2uF
Sorry for the added work and confusion.
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ricky252
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Posts: 26 Joined: Sun Oct 20, 2013 3:07 pm
Location: United States
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by ricky252 » Sun Jan 12, 2014 12:06 am
Hey thats ok my man. Thank you very much. will give it a whirl in the morning.
252 in Ga.
ricky252
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Posts: 26 Joined: Sun Oct 20, 2013 3:07 pm
Location: United States
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by ricky252 » Mon Jan 20, 2014 4:23 pm
Thanks Goldfinger that did the trick. Very good lows in my speaker, better than any 29 I have done.
252 in Ga.