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Message |
    
Goat373
Intermediate Member
Username: Goat373
Post Number: 114
Registered: 3-2005
| | Posted on Thursday, December 22, 2005 - 9:53 pm: | 
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what would the best choice from magnaforce be for me, radio/radios...tr-296/cobra 85, also cobra 200, but i dont expect the amp to hold it, it is mainly for the 296, in the house. ps-52k 50 amp power supply. I-max 2000.
was thinking of the 350, good price and good power...anyothers. i could go smaller if it would work better with my radio |
Thehobo
Junior Member
Username: Thehobo
Post Number: 42
Registered: 2-2004
| | Posted on Friday, December 23, 2005 - 8:55 am: |
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373= i dont think the ps52k will hold the amp?? they call it 52 amp but it does 42 and will swing to 52?? thats what mine and my freinds do?? if you could hold the 200 down to 120 swing, then the 2 pill with 2879 pills in it wood hold ok?? been there and done it!! best of luck to ya, but like i said, your power supply is the hold up i think??
thehobo
274150 am
monitor ch, |
1861
Intermediate Member
Username: 1861
Post Number: 417
Registered: 2-2004
| | Posted on Friday, December 23, 2005 - 9:33 am: |
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350 would work great , you will be at maximum on power supply |
Tech808
Moderator
Username: Tech808
Post Number: 8727
Registered: 8-2002
| | Posted on Friday, December 23, 2005 - 5:20 pm: |
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FYI,
Both of our PYRAMID PS-52KX Power Supplies have 46 Amps Constant and 52 Amp Surge.
I have never used a magnaforce amp so I have no idea what it would pull or what it needs/requires for power.
Hope this helps a little,
Lon
Tech808
CEF808
N9OSN |
Goat373
Intermediate Member
Username: Goat373
Post Number: 115
Registered: 3-2005
| | Posted on Friday, December 23, 2005 - 5:45 pm: |
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ok...cause the magnaforce site says this think only draws 29
Transistors 2 x 2SC2879
Dimensions H 4 1/4' x L 7 1/8' x W 41/4'
Amp Draw (maximum) 29
Class B
SSB Delay yes
Pre-amp no
Driver Required N/A
Power Output (RMS) 150 Watts
Power Output (PEP) 400 Watts
Driven Power (RMS) N/A
Driven Power (PEP) N/A
install recommended with 8ga wire
and 50a fuse. Max input carrier of
5w or 120w max carrier from amp.
Max peak input 120w. |
1861
Intermediate Member
Username: 1861
Post Number: 419
Registered: 2-2004
| | Posted on Friday, December 23, 2005 - 8:03 pm: |
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THAT IS A MIS PRINT ON THEIR SITE , IT WILL DRAW RIGHT AT 50 ALL OUT |
Goat373
Intermediate Member
Username: Goat373
Post Number: 117
Registered: 3-2005
| | Posted on Saturday, December 24, 2005 - 1:51 am: |
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ok...sill think i might look at getting it, i doubt the 296 will push it where it needs all 50 |
Goat373
Intermediate Member
Username: Goat373
Post Number: 119
Registered: 3-2005
| | Posted on Tuesday, December 27, 2005 - 8:19 pm: |
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ok...back again, MF 350...or something by texas star??...or something else...gimmie all your suggestions, looking for around 300watts or more..around $200 give or take a little, i will pay more for quality. also, more watts in the house?, or more watts in the truck, because i could bring my 225 into the house and put my new amp in the truck. |
Hotwire
Advanced Member
Username: Hotwire
Post Number: 744
Registered: 1-2005
| | Posted on Wednesday, December 28, 2005 - 2:56 pm: |
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Texas Star DX500V + ps 52k =
Texas Star DX500V is around 280 greenbacks from Copper. YOU CAN'T BEAT THAT WITH A STICK MAN!!!! |
Goat373
Intermediate Member
Username: Goat373
Post Number: 120
Registered: 3-2005
| | Posted on Wednesday, December 28, 2005 - 6:18 pm: |
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im pretty sure the ps 52k wont hold the 500, it started chattering when i but a 400v on it on high, driven by a galaxy 44 swinging up to 35 watts(volted)...also, ps52k was at 15 volts, so maybe that caused it. but i still doubt it, if i sell this one item i have a guy looking at i will prooly get the MF...unless some one wows me |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2139
Registered: 7-2004
| | Posted on Thursday, December 29, 2005 - 7:29 pm: |
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the mf350 SWINGS big time, the 52k WILL be maxed out. at worst, back the mic gain down a bit, til PS doesn't kick off. should still see high 300's in swing. a dx350 texas star will only see about 250 swing, & still pull hard on the 52k, more then 50%.
i just set up a a texas star dx1600 for someone-2 yellow top optima batteries, in their own aluminum enclosure, vented to the outside & powered by a sears diehard charger, 10/40/100 amp. on 40 amps, on SSB, the batteries hold enough juice to cruise near 1kw PEP, & AM keys 200 & swings 800+ & voltage holds well enough to keep 200 key after nearly 30 seconds of modulation. may not necessarily be cost effective, but, winter is here, batteries came out of his boat & charger was already in garage. basically, a $600 power supply.
the mf350 would CRUISE with a setup like that, probably even an mf400 or 600 as well |
Goat373
Intermediate Member
Username: Goat373
Post Number: 129
Registered: 3-2005
| | Posted on Friday, December 30, 2005 - 9:23 pm: |
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naw...i think batteries are a bit too much trouble, would the 296 really push the mf350 that hard?...or a cobra 85...ill never use it with the 200...EVER |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 587
Registered: 2-2003
| | Posted on Saturday, December 31, 2005 - 3:51 am: |
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50 amps??, I guess it is possible to draw that much amperage, only if you're talking on SSB. |
Goat373
Intermediate Member
Username: Goat373
Post Number: 132
Registered: 3-2005
| | Posted on Saturday, December 31, 2005 - 2:22 pm: |
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what would better..the MF350 or the Skywave 2879AB???? |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2152
Registered: 7-2004
| | Posted on Saturday, December 31, 2005 - 5:56 pm: |
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not familiar at all with the skywave...from experience with DOZEN or more different customs, davemade & xforce have been consistent 1-2, fatboy a plain ole 3rd, & all else has been....
the 296 can be set to dead key from 0-5 watts(i'd put in variable), i'm sure the 85 can at least be set to key 2-2.5 watts. the mf350 will MORE then handle ANY swing either radio can give it, about 100 watts. key the amp at 100 & watch it swing 350-400. the 52 should be good(i think i wrote that somewhere else for ya, goat!)
an MF400, with 4x2290, up the radio power til amp keys 150-175 & depending on radio swing, you should see 400-500, or even more! its amp draw is gonna be comparable to that of the 350, or just a bit more!
the mf600 with 4x2879 is way too big for the 52k as it could draw 75 to over 90 amps. YET, a texas star 4x2879 is probably only gonna draw nearer 60 amps, with a bit lower dead key & only 2/3 the PEP.
i'd consider the 400, with the mindset that in the future, in a mobile, or with a bigger PS, it could be hit harder, more volts, whatever, though the 350 would be a good driver box for an 8 pill custom
stay a bit below xforce & davemade suggestions for reliability reasons. you can go the max, but who knows how long it'll last. i do not fear 10 ohm smoke, as bad as it smells...hey, a handful of 2879's are cheaper then a bigger amp, so i HAMMER mine big time & hope for the best!
get 'em all...it's only money  |
Sparkomatic
Intermediate Member
Username: Sparkomatic
Post Number: 378
Registered: 10-2002
| | Posted on Friday, January 06, 2006 - 8:43 am: |
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The 296 and Older style Cobra 148 GTL have the same chassis......the Magnaforce 350 will swing between 275-300 watts peak with the 296. The Cobra 200 should push that amp a lot harder and you will probably see 400-425 watts peak with the Cobra 200.
To get the 350 to really play with the 296 a 1 pill driver would definately be needed.....but that would really burden that power supply, with only the MF 350 that power supply is more than enough. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2188
Registered: 7-2004
| | Posted on Saturday, January 07, 2006 - 4:48 pm: |
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the magnaforce 350 is a low drive amp. it'll take UP TO 5 watts, or whatever it takes to get to its MAX of 125 watts dead key or less. doing 150 as he implies is possible, will just shorten lifespan.
while he also says it'll take 100 watts swing input, 400 max PEP swing output is about all it'll do. my S9 at 40 watts gets only a few more then my XL at 15 watts, about 400 vs 375+.
the cobra 200 would need to be on low output, with key backed down. getting near 400PEP out with 40 PEP in increases lifespan over putting 100PEP in to get 400PEP out. |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 591
Registered: 2-2003
| | Posted on Wednesday, January 11, 2006 - 7:07 am: |
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Patzerozero, Do you believe that the magna-force 400 can be made to key 150 watts, and still swing forward?. Is this good for longevity?. I mean it is a 4 pill, as opposed to the 2-pill magna-force 350, whichs requires a max of 120 watt dead key from the amp. What do you think?.
Wolverine. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2240
Registered: 7-2004
| | Posted on Wednesday, January 11, 2006 - 9:59 am: |
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looking back wolverine, it WAS new years eve-& i wasn't even drinking! though 125 or less is probably a bit better for longevity, i'd say 150 is MAX, & yes, you should still be able to get 400-500 depending on INPUT swing.
as the mf350 uses 2x2879, i stand by my 100 watt dead key for longevity. yes, 120 is possible.
i key my davemade at the FULL rated output, or MORE, & still see FULL forward swing. lots of fans to keep the heat in check. |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 592
Registered: 2-2003
| | Posted on Thursday, January 12, 2006 - 3:11 am: |
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Okay Patzerozero, I was curious because the magna 350 is supposed to peak at 400, while the magna-400 is supposed to peak at 440 watts. Two extra pills more than the 350 and you only get a measly 40 extra watts???. I know it's a 2290 x 4 but Jeeezz. Maybe that's why the magna 350's out sells the magna 400, two to one. If I were to upgrade to the Magna -600, that would be way to much overkill for my application, not to mention having to rewire the car with 4 guage wire. I wish that some engineer would invent a transistor that would fit neatly between a 2879, and a 2290, where I can still use 8 guage wire, and the amp doesn't need a driver pill to get 500 watts. LOL.
Wolverine. |
Sparkomatic
Intermediate Member
Username: Sparkomatic
Post Number: 381
Registered: 10-2002
| | Posted on Monday, January 23, 2006 - 12:20 pm: |
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In my work truck I have been driving my Magnaforce 350 with an Xforce X-40 for 4 years now and see almost 500 Bird 43P watts peak. My Cobra 148 GTL drives the X-40 to 125 watts peak. The Magnaforce 400 is a nice SSB amp but for AM stick with the 350 and a driver.......the 350 is less money and only does 50 watts less when driven. The 350 can take the drive because I have driven mine hard for 4 years and she plays just as nice now as the day I got it. Nothing like keying over stock 4 pills with a 2 pill. |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 594
Registered: 2-2003
| | Posted on Wednesday, January 25, 2006 - 4:32 am: |
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I didn't think you could drive a magna-force 350 with anything Sparkomatic, way to go!!
Wolverine. |
Sparkomatic
Intermediate Member
Username: Sparkomatic
Post Number: 385
Registered: 10-2002
| | Posted on Friday, January 27, 2006 - 5:41 pm: |
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Anytime you drive an amp very hard the risk of early failure or over modulation can happen. My system sounds impressive and I've been beating on it for 4 years. LOW reflect watts might have a lot to do with it and when the box heats up I let it cool off. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2313
Registered: 7-2004
| | Posted on Friday, January 27, 2006 - 7:03 pm: |
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sparkomatic..... ...what you said & the extra fans on my davemade help me get out from time to time. that & a strange fascination for 10 ohm smoke
wolverine, while the mf350 won't take much dead key, it will handle lots of PEP swing! for getting 500, PEP, a dx667v would get you aweful close, & a 5 pill custom(biased for SSB by request) will get you 800+PEP. if you keep the mic gain lowered, you can limit it to 500 or whatever you'd like. as for 8 guage wire...the texas star, if the run was short, SHOULD be alright. a custom on 8 guage...if it was REALLY short & powered low burning wires do not have the same effect as burning resistors! |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 596
Registered: 2-2003
| | Posted on Wednesday, February 01, 2006 - 8:17 am: |
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Patzerozero, what is the maximum peak watts, that you think 8 guage wire will take??. And how do you feel about Joker amps?, Have you ever tried one?
Wolverine. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2341
Registered: 7-2004
| | Posted on Wednesday, February 01, 2006 - 5:35 pm: |
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depends on the length. but i'd stick with under 400 PEP if less then 10 feet. i try to wire 1, 2 & 4 pills with #6 when less then 12 feet or so.
have never owned a joker. what i've seen, they seem close in build quality to other customs. i've heard ******** or whoever is building them is hard to get in touch with & sometimes slow in getting product out. |
Alsworld
Advanced Member
Username: Alsworld
Post Number: 976
Registered: 1-2002
| | Posted on Wednesday, February 01, 2006 - 9:09 pm: |
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I have heard that Joker stopped making amps, but who knows if that is true. Everything I have ever read about them was very positive, biased at AB for great sound quality. People who have owned them really love them, but I have no experience with them myself.
I have played with a MagnaForce 350 and really like it. I actually got the numbers they advertise and it's built very well.
Alsworld |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 598
Registered: 2-2003
| | Posted on Thursday, February 02, 2006 - 4:24 am: |
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Yeah, Alsworld you're right. Real tough boxes, biased class B. I hear that once they warm up, the magnas will operate on the verge of class AB-1. I just don't want to burn up my 8 guage wire with too many peak amps.
Wolverine. |
Alsworld
Advanced Member
Username: Alsworld
Post Number: 977
Registered: 1-2002
| | Posted on Friday, February 03, 2006 - 1:19 am: |
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Wolverine,
first let me say I have not read this entire thread tonight. It's late and I'm tired, but here is something to consider.
The MagnaForce 600 will not draw 100 amps unless driven with another amp. If you run a 600 with only a radio (low drive or single/dual final export), I think 8 gauge wire would be okay. Dual final export like a Magnum S9 would probably be okay also, just not a 100 watt radio like a 100 watt Ranger 2970DX with 8 gauge wire.
It's being driven with a driver is what runs up the MF 600 to the advertised 100 amps. With just a radio and the MF600, I think the worst you would do is not feed it with enough power to reach it's potential power (limited by the 8 gauge wire).
In reality, I'll bet your radio and a MF600 would work out fine.
Now, the question is can your coax handle it?
Alsworld |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2346
Registered: 7-2004
| | Posted on Friday, February 03, 2006 - 5:11 pm: |
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in a residential area, double shielded, rg8-sized coax should be considered a minimum (9913, 9086, etc)when running power.
the website i have for joker is 'not found' as well as 1 email address, have yet to receive a reply from the other 1 i have. |
Mrclean
Junior Member
Username: Mrclean
Post Number: 35
Registered: 12-2003
| | Posted on Wednesday, April 05, 2006 - 7:22 am: |
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Ive been running a MF350 for 3 years in my Nissan truck. Using my galaxy 88 at 7 watts swinging 24 or so. Deadkey 150 swing 350. Its ran fine like this |
Wolverine
Advanced Member
Username: Wolverine
Post Number: 621
Registered: 2-2003
| | Posted on Thursday, April 06, 2006 - 8:42 am: |
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Mr. Clean, with that dual final radio, you should be getting over 400 watts + peak. I think your magna would swing more, if you'd lower the dead key.
Wolverine. |
Brewdirect
Intermediate Member
Username: Brewdirect
Post Number: 182
Registered: 7-2004
| | Posted on Friday, April 07, 2006 - 7:20 pm: |
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I find it hard to believe that a Magnaforce 350 will draw 50 amps.
My Magnaforce 200 being driven at max only has ever drawn 26.
Magnaforce amps rock - I'd take them over a Texas Star any day. For getting heard out there they do the job. |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 2679
Registered: 7-2004
| | Posted on Saturday, April 08, 2006 - 11:52 am: |
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hey brew, the mf200 uses a 30 amp fuse, & could draw even another amp or 2 more then yours does. the mf350 comes with a 50 amp fuse & should draw in the mid to upper 40's. it's from the high swing. |
Mrclean
Junior Member
Username: Mrclean
Post Number: 36
Registered: 12-2003
| | Posted on Tuesday, April 11, 2006 - 7:05 pm: |
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Think my alt is maxed out or it would do more. |
