| Author |
Message |
    
Yogi
New member
Username: Yogi
Post Number: 1
Registered: 12-2004
| | Posted on Sunday, February 06, 2005 - 12:00 am: | 
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I installed my new S-9 & retired the Genneral Lee. I have a Xforce Xt-400 that was already installed. I have the top gun turn off, PWR is turn all the way to the left. Everytime i start talking my breaker switch trips the amp & shuts down. What am i doing wrong ? Do i need to just turn on the top gun ? Where do you have your knobs set at. |
Alsworld
Advanced Member
Username: Alsworld
Post Number: 889
Registered: 1-2002
| | Posted on Sunday, February 06, 2005 - 2:53 am: |
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It sounds like the combination is drawing too many amps. What amperage circuit breaker is this setup hooked up to?
Will it do it if you temporarily rehook back the General Lee inline?
Alsworld |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 423
Registered: 7-2004
| | Posted on Sunday, February 06, 2005 - 11:33 pm: |
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what exactly are you running, yogi? xt400m mobile, with 2-2290's driving 4-2879's on a 12 volt power supply? that is a very amperage hungry amplifier, which is capable of better then 300 watt dead key and 1000 watts swing, requiring somewhere around 100 amps to fully supply it.
correct me if i'm wrong, but a genl lee is an export type cobra 29 i believe, no SSB and 10 watt dead key? probably a single 1969 or 2132 transistor? without knowing what you have, exactly, & how you're running it, it's hard to say what the problem is, though my guess, if i correctly assumed how you're setup is that the S9 is just pounding the xforce too hard & drawing too many amps. and what breaker is tripping-in the house panel or on the power supply? |
Yogi
New member
Username: Yogi
Post Number: 3
Registered: 12-2004
| | Posted on Wednesday, February 09, 2005 - 2:36 pm: |
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I'm running Xforce xt-400 transistors 2 x 2sc2290/4 x 2sc2879 amp draw max 100, RMS 450 watts PEP 1000. The Genl lee is like a connex 3300. The breaker i have is pyramid 100 amps. This is all the local cb shop have ever used. I stop by a car stereo shop and order a 150 anl fuse to use on it. Hopefully this will solve my problem |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 426
Registered: 7-2004
| | Posted on Wednesday, February 09, 2005 - 6:07 pm: |
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don't put a bigger fuse into anything that is rated to use a smaller one. that's what's protecting you from smoke & flames. tripping a circuit breaker on the power supply or house AC is because you are drawing too many amps. the amp is drawing too many amps because of either poor match/bad swr's or output is more then power source can supply. check swr's, jumpers, etc. if they're good you are probably pushing the amp too hard. double check that it still works properly with the genl lee. if it does, put S9 back on it, with dead key down under 3, topgun on & mic gain backed down til swing is under 30 watts. turn xforce variable down & slowly increase dead key, up til about 300 watts & see if if breakers hold there. if they pop at a lower output, say 200 watts, thats probably just the limit of the power supply with that radio's drive. if they pop right from the start at a real low output, as long as swr's are good, there's a power supply or amp problem to deal with. |
Yogi
New member
Username: Yogi
Post Number: 4
Registered: 12-2004
| | Posted on Wednesday, February 09, 2005 - 8:12 pm: |
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Xforce xt-400 calls for a 150a fuse. I think the S-9 is over driveing the amp. Does anyone know how to turn the power down ? I turn the PWR all the way to the left mic gain turn it down. Had top gun turn off. Still my amp would shut down. Tried to turn on the top gun on knowing that AM carrier to be turn down to 1 to 1.5 watts while still maintaing the peak output power to 45 watts of modulation [45 watts of swing] still the samething happen my amp shut off. Liveing out in the country there is no one who knows anything about S-9. I will have to wait untill i travel by a good cb shop and let them look at it. |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Wednesday, February 09, 2005 - 9:51 pm: |
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Try turning the variable power of the amp the whole way down. That may allow you to use it with the S9 if it is overdriving the amplifier. I guess it depends on how the variable power is done. I won't even hazard a guess because I don't understand why anyone would build an amp like that anyway.
1000 watts PEP with 4x2879 - at what voltage? Not at 12.5v where they're rated at 120 watts PEP. 2290's are rated at 80 watts PEP each so that's 160 watts drive? 2879s need about 7 watts drive to reach their rated output. 4x7=28 not 160. Most export rigs will get close to 28 watts by themselves and don't need the additional help of the 2 2290s. |
Yogi
New member
Username: Yogi
Post Number: 5
Registered: 12-2004
| | Posted on Thursday, February 10, 2005 - 10:22 am: |
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Thanks for that idea i don't know why i didn't think about that. I will give it a try that should work. |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 429
Registered: 7-2004
| | Posted on Thursday, February 10, 2005 - 10:46 am: |
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racer, the x force separate power supply unit, rated to deliver 150 amps, along with their AC base units use UNREGULATED, high voltage supplies, closer to 17 or 18 volts then 12. they state to ONLY use their PS with their own mobile amps, which also are rated assuming the operator is using some volts! also, look at the size of the transformers, etc, as opposed to the commercial type cb amps out there. they want you to be able to get every last bit of juice out of 'em. my 1x4 davemade amp, which xforces are a copy of swings over 700 watts on 12 volts w/the S9 on a bird 43 w/pep conversion & roughly the same on diamond sx100 peak scale, & can go more with more input pep & volts. |
Yogi
New member
Username: Yogi
Post Number: 6
Registered: 12-2004
| | Posted on Thursday, February 10, 2005 - 2:23 pm: |
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Well i went outside to see if i could figure out what was going wrong. I don't know what i did that was diffrent. From what i have been doing, but every thing is working now. I turn down the Vol & Del, a little bit everthing just started working. Should i leave the pyrmid breaker or switch over to the 150a fuse like Xforce recommend |
Tech808
Moderator
Username: Tech808
Post Number: 4794
Registered: 8-2002
| | Posted on Thursday, February 10, 2005 - 4:12 pm: |
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Yogi,
If everything is working OK, then then I suggest leave it alone. 
There is a very old saying:
IF IT's NOT BROKEN DON'T FIX IT.
Lon
Tech808
CEF808
N9OSN |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Thursday, February 10, 2005 - 4:32 pm: |
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Patzerozero - That's interesting. Unregulated power supply? Swings 700 watts from 4 devices that the manufacturer rates at 120PEP each at 12.5v? People wonder why others have the opinion they do - this is why. |
Pig040
Advanced Member
Username: Pig040
Post Number: 679
Registered: 7-2003
| | Posted on Friday, February 11, 2005 - 10:52 am: |
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A lot of people volt up to use the dave's made or X force amps, if you look at the figures on their site, they give the results on several different voltages |
Patzerozero
Intermediate Member
Username: Patzerozero
Post Number: 436
Registered: 7-2004
| | Posted on Friday, February 11, 2005 - 6:59 pm: |
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the custom builders have proven that these devices can handle and produce more then their recommended ratings, and reliably for that matter.
put 18 or 20 volts into a texas star dx350. i've seen it key 300 watts & swing almost double that. once or twice. the cloud of smoke & the smell was awesome. the custom builders have done all of that work to avoid those explosive endings, and they know what these transistors will tolerate. that texas star will do 120 key & 250 swing, reliably without blowing up. that is fact, not opinion. locate a 'cb' keydown. 100 or more of the most outrageous, not neccessarily legal cb & amp MOBILES you could ever imagine. they are using what they consider to be the best AM cb's of all time, cobra 25's & 29's. they are using bird wattmeters or better, they are using 2-4-6-8 or more alternators producing 165-1000 amps, they are using AC tube amps producing 5000-10000-20000-40000-50000 or MORE watts, DC solidstate boxes on 18-28 volts and more producing 10000-12000 watts or more. you can get A WHOLE LOT MORE then 120 watts out of a transistor that is rated at 120 watts. reliably & consistently. that is FACT not opinion. |
