http://www.mauldroppers.com/ This is the spot to discuss mobile linear amplifiers, motormauls, charging sytems, and anything else related to pumping more fire through the wire. en Fri, 03 Sep 2010 10:42:48 GMT vBulletin 60 http://www.mauldroppers.com/images/misc/rss.png http://www.mauldroppers.com/ http://www.mauldroppers.com/showthread.php?11506-skywalker-amps&goto=newpost Thu, 02 Sep 2010 04:01:08 GMT i have been considering going with a mosfet amp built by skywalker amps.. i figure if some of the big boys on the bowl are using them as drivers... i have been considering going with a mosfet amp built by skywalker amps.. i figure if some of the big boys on the bowl are using them as drivers volted up to 50 ! thats right 50 volts than maybe i can get a little satisfaction that a 24 volt smack wont even unleash the chance of burnin up a large 900 watt at 12 volts .. ]]> spacecricket http://www.mauldroppers.com/showthread.php?11506-skywalker-amps http://www.mauldroppers.com/showthread.php?11485-8-mosfet-amp-on-ebay&goto=newpost Wed, 01 Sep 2010 02:52:09 GMT is this real i wonder..lol

http://cgi.ebay.com/8-mosfet-amp-/19...item2c57021322 ]]> dave http://www.mauldroppers.com/showthread.php?11485-8-mosfet-amp-on-ebay http://www.mauldroppers.com/showthread.php?11478-4CM400-000-tetrode&goto=newpost Tue, 31 Aug 2010 07:38:18 GMT *now this is a MAUL!!* Continental Electronics Type 420 B 500,000 watt Broadcast Transmitter http://www.transmitter.be/con-420b.html AM... now this is a MAUL!!

Continental Electronics Type 420 B
500,000 watt Broadcast Transmitter
http://www.transmitter.be/con-420b.html

AM and SSB!!

I wonder if it has an SO239 input. lol

933Arizona
in the stickers ]]> 933Arizona http://www.mauldroppers.com/showthread.php?11478-4CM400-000-tetrode http://www.mauldroppers.com/showthread.php?11477-Joker-JL-400-RAB&goto=newpost Tue, 31 Aug 2010 06:43:13 GMT This amplifier was in for a relay change out so I snapped some pictures before it went to the bench.
I get PM's and emails asking for pictures so I will start trying to get pictures up.
I blurred some of the images to keep the copycat amp builders curious ha ha.
This was built sometime around 2000 I would guess.
1 2290 driving 4 2879 with full featured remote and thermal tracking regulated AB biasing.

Enjoy.

























]]> -=PEAKABOO=- http://www.mauldroppers.com/showthread.php?11477-Joker-JL-400-RAB http://www.mauldroppers.com/showthread.php?11469-External-Rectifier&goto=newpost Mon, 30 Aug 2010 20:33:40 GMT Fat boy sales an External Rectifier could someone explain what this is and how it is used? Fat boy sales an External Rectifier could someone explain what this is and how it is used? ]]> Juice 518 http://www.mauldroppers.com/showthread.php?11469-External-Rectifier http://www.mauldroppers.com/showthread.php?11464-Preamp-Schematic&goto=newpost Mon, 30 Aug 2010 18:49:16 GMT anyone have a simple preamp circuit schematic they can share? I want to add one my 4pill. anyone have a simple preamp circuit schematic they can share? I want to add one my 4pill. ]]> NoiseMaker http://www.mauldroppers.com/showthread.php?11464-Preamp-Schematic http://www.mauldroppers.com/showthread.php?11428-Holy-shit-finally-a-true-competition-amp-lol&goto=newpost Fri, 27 Aug 2010 04:31:51 GMT CHECK THIS BULLSHIT OUT.. 5000-6000 WATT 12 PILL ... CHECK THIS BULLSHIT OUT.. 5000-6000 WATT 12 PILL

http://cgi.ebay.com/LINEAR-AMPLIFIER...efaultDomain_0

NICE,,,,221 ]]> cowboy221 http://www.mauldroppers.com/showthread.php?11428-Holy-shit-finally-a-true-competition-amp-lol http://www.mauldroppers.com/showthread.php?11423-amp-tuning-basics(transistor-s)&goto=newpost Thu, 26 Aug 2010 23:07:55 GMT 1-1446 driving 2-2879's

I started a thread awhile back about a 3-pill amp that I was building. Well, it's working pretty good now, but I do have some questions about the tuning. As a general rule of thumb...for a transistor box with a driver section, should I tune the input with the "max 4 watts carrier from radio and pad the input a bit to cover the large deadkey from the amp? I first tuned the input with "2 watts" from radio and all is working pretty well, however, I can't put anymore than 2 watts drive into the box or it's really being overdriven, if I run the amp variable power full open. I have been experimenting with different cap values on the input and output, but just needs some expert advice to point me closer to the finish line. Thanks.. ]]> Sandman http://www.mauldroppers.com/showthread.php?11423-amp-tuning-basics(transistor-s) http://www.mauldroppers.com/showthread.php?11403-D.M.-6Pill&goto=newpost Wed, 25 Aug 2010 16:38:44 GMT Brought a D.M. 6pill hooked it up and everyone says I have the power but no mod or swing. Hooked back up my Texas Star DX667v 5 pill and got all the... Brought a D.M. 6pill hooked it up and everyone says I have the power but no mod or swing. Hooked back up my Texas Star DX667v 5 pill and got all the mod and swing I can have. What could be the problem? ]]> Bald Eagle http://www.mauldroppers.com/showthread.php?11403-D.M.-6Pill http://www.mauldroppers.com/showthread.php?11379-Weird-Problem-With-a-Galaxy-225-(Palomar-225)-2-Pill-Amp&goto=newpost Tue, 24 Aug 2010 04:15:53 GMT I've got a Galaxy 225 amp which is a Palomar 225 clone. When I bought it the compensator cap on the output transformer was missing and a feedback resistor had broken solder. After soldering the resistor down and replacing the 820pf cap, the amp now has a weird problem

It never worked right since I had it. Now when I put output on low power, the swr seems good and it keys 5 watts and swings to 15. On medium power the SWR starts good, pauses, then the needle slams hard into the red. On medium the power output starts at 20 watts, pauses, then slams the needle to 45 watts. With audio it only swings to 50 watts. What could cause this symptom time and time again?
Its so odd that it would wait for a second, act like its working and then just go haywire.

On full power, the swr immediately is in the red and power deadkeys at 50 and swings to only 55 with audio.

Both pills get warm and seem to be working and don't show any signs of wear or burning.
Before I put the 820pf cap on, I had the same results minus the weird pause on swr and power before going haywire: It just went haywire immediately

I can't spend much money on this amp, but I figured I could fix it. Its getting to be a real PITA. :mad2:

Anybody have any pointers? Its not my meter, it works fine with just my radio.

Also, going through the amp once more before getting too mad, I discovered that the cap in the upper left hand corner was broken on one lead. According to this thread:

http://www.worldwidedx.com/amplifier...questions.html

the cap controls delay for SSB. Could this be causing my problem? I doubt it is but it is the only physical problem I can see. I'm only thinking this because of the pause in needle movement before slamming to the red. But this only happens on medium power, not any other setting.

I am just so confused and I'm trying to get my first amp working properly on a budget :frown5: ]]> Buckshot555 http://www.mauldroppers.com/showthread.php?11379-Weird-Problem-With-a-Galaxy-225-(Palomar-225)-2-Pill-Amp http://www.mauldroppers.com/showthread.php?11351-Help&goto=newpost Sun, 22 Aug 2010 05:41:29 GMT Hello guys its me Latin Dragon, I have a question I would like to get into the mobile game. Does anyone have great info on a starting point? I would... Hello guys its me Latin Dragon, I have a question I would like to get into the mobile game. Does anyone have great info on a starting point? I would like to get a chevy suburban or a chevy van, and would like to know of a good starting setup. I. E. like alternators, boxes, coax and antenna. I am not a mud duck at the base, i build my own base boxes, never tried my hand at mobile. But i know if i can get help from you guys that know quite well your stuff. Please help and thank you. ]]> Latin Dragon http://www.mauldroppers.com/showthread.php?11351-Help http://www.mauldroppers.com/showthread.php?11325-pallomar-4-pill-problems&goto=newpost Fri, 20 Aug 2010 06:31:33 GMT i have a pallomar 5300s 4 pill i am workin on and my problem is the resistors coming form the bottom of the pills keep blowing they are the ones next... i have a pallomar 5300s 4 pill i am workin on and my problem is the resistors coming form the bottom of the pills keep blowing they are the ones next to the ferites i bleive thats what there called the rest of the amp looks up to par but im not sure what could be the problem? there 10 ohm half watt resistors. im not sure if the pills are the problem and i hope there not. ]]> santafe308 http://www.mauldroppers.com/showthread.php?11325-pallomar-4-pill-problems http://www.mauldroppers.com/showthread.php?11287-MotorMaul-or-2nd-Alternator-decisions-decisions....&goto=newpost Wed, 18 Aug 2010 01:44:38 GMT So my new box (1x2x12) is awesome, but my truck just aint' got enough uumph.
240a Alternator, 6 batteries on an isolator, but now comes the decision making.
400a motormaul or a 2nd alternator. I hear both good and bad things about the motormauls, and 2nd alternator looks cool but sucks more gas.. etc. I found a sweet spot for now, but she can do more!
Looking for some input. Thanks!
-Noizy ]]> NoiseMaker http://www.mauldroppers.com/showthread.php?11287-MotorMaul-or-2nd-Alternator-decisions-decisions.... http://www.mauldroppers.com/showthread.php?11266-Homebrew-Mobile-amp&goto=newpost Mon, 16 Aug 2010 20:40:06 GMT I am currently running a 2 pill amp and would like to build one the same size or bigger. I have several amp plans both from this forum and ones I... I am currently running a 2 pill amp and would like to build one the same size or bigger. I have several amp plans both from this forum and ones I have purchased. My question is parts where to get the parts. The links that are given by the time you buy the parts you might as well buy a pre built amp. Am I missing something here? I have always wanted to take on the project of building my own, Maybe its not in the cards. ]]> wrongway http://www.mauldroppers.com/showthread.php?11266-Homebrew-Mobile-amp http://www.mauldroppers.com/showthread.php?11242-Tight-audio&goto=newpost Sun, 15 Aug 2010 01:44:51 GMT I been running a galaxy 55 hp to my t.s. 500the radio dead keys like 5 and swings to 50. Am i hitting this amp to hard. Got a report bout 60 miles... I been running a galaxy 55 hp to my t.s. 500the radio dead keys like 5 and swings to 50. Am i hitting this amp to hard. Got a report bout 60 miles from me dude said my audio was clipping ]]> julthree http://www.mauldroppers.com/showthread.php?11242-Tight-audio