detune radio??
detune radio??
OK so i have a 26 ltd with a 250 Palomar in my pickup but i also just acquired another 29 with echo and talk back from a friend of mine. the 29 hooked up to the kicker has been detuned down to 1 watt with no amp. do i have to do this on my other peaked and tuned 29 before i hook it up to my amp?? and if not is there any precautions i should take before hooking it up??
yeah you have to if it tuned all the way up you can damage the amp badly. it can only take so much wattage to run the amp if it goes over it can saturate the trasistors and burn them up. the 29's work awsome with a variable swing kit so you can manualy ajust the dead key on the fly for any amp and ajust it to where it sounds good. you might wanna look into that if you like to switch amps alot. and if you like doing work yourself the variable swing kit will run ya about 5 bucks for all the parts insted of paying $60-80 bucks @ some shop.
hey thanks for the fast reply. not really looking to switch amps but more or less want the 29 with the echo in my pickup and put the 29 thats currently in my pickup back in the semi. i am not a big fan of echo so i figured i would use that in my pickup where i really don't talk a lot. also i am just getting into radios so as far as me doing the work i don't trust myself to do it yet maybe once i get a little more used to them and how they work will i be more willing to do my own radio work. but once again thanks for the fats reply
- Maverick
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Dead Key Mod for amps:
1) Locate and remove jumper JP36, (JV101 on the Uniden PC78 Chassis) which is a piece of wire located by the aluminum heatsink near the left rear of the radio, just to the left of L14.
2) Install a 16V to 35V 100uf capacitor in place of the jumper, striped side (negative) lead towards rear of radio.
3) Turn radio over to board side and solder a 50 to 100 ohm 1 or 2 watt resistor across the legs of the capacitor protruding through the board.
(The value of the resistor you choose will raise or lower the dead key wattage of the radio - use a value that fits your needs)
(I personally find a 68 ohm resistor to work best on my setup)
(Additionally, it is suggested to jumper out D10 with this mod, but it is not necessary, so leaving it as optional)
1) Locate and remove jumper JP36, (JV101 on the Uniden PC78 Chassis) which is a piece of wire located by the aluminum heatsink near the left rear of the radio, just to the left of L14.
2) Install a 16V to 35V 100uf capacitor in place of the jumper, striped side (negative) lead towards rear of radio.
3) Turn radio over to board side and solder a 50 to 100 ohm 1 or 2 watt resistor across the legs of the capacitor protruding through the board.
(The value of the resistor you choose will raise or lower the dead key wattage of the radio - use a value that fits your needs)
(I personally find a 68 ohm resistor to work best on my setup)
(Additionally, it is suggested to jumper out D10 with this mod, but it is not necessary, so leaving it as optional)
or replace the resistor with a 5kohm potentiometer and theres your variable...BigBopper wrote:Dead Key Mod for amps:
1) Locate and remove jumper JP36, (JV101 on the Uniden PC78 Chassis) which is a piece of wire located by the aluminum heatsink near the left rear of the radio, just to the left of L14.
2) Install a 16V to 35V 100uf capacitor in place of the jumper, striped side (negative) lead towards rear of radio.
3) Turn radio over to board side and solder a 50 to 100 ohm 1 or 2 watt resistor across the legs of the capacitor protruding through the board.
(The value of the resistor you choose will raise or lower the dead key wattage of the radio - use a value that fits your needs)
(I personally find a 68 ohm resistor to work best on my setup)
(Additionally, it is suggested to jumper out D10 with this mod, but it is not necessary, so leaving it as optional)