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BOOSTER AMPLIFIER (STEREO) using MJ2955

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Post by renelachica88 Thu Feb 16, 2012 4:52 pm

Yung TR1 ay RDL-I at yung TR2 ay RDL-O. 33 ohms at 270 ohms na resistor @ 1 watt . Sa Raon pa kami bumibili noon. Sorry medyo matagal na kasing project namin yan sa high school at di ako sigurado kung may gumagawa pa ng ganung transformer. Actually yung ginamit naming transistor noon ay Genuine na 2SB449 o 2SB337. Resistors are 4.7 and 470 ohms. That was year 1979 pa.
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Post by bhongskieboie Mon Mar 19, 2012 1:28 am

sir gae kog diagram sa kwadro nga booster b galibog mn gud ko kay duha duha mn iyang input ..nangaputol nmn gud tawn ang wiring ani akong booster kay dugay nmn ni wala magamit , as in nanga puka ang mga sinuldahan...... hope inyo ko ma tebangan ... salamat
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Post by arkin Tue Mar 20, 2012 7:02 am

same rna s mono nga booster.gi times four lng na.meaning,ang set up sa mono,ghimo lng upat pra ma kwadro.kopyaha lng na ang ubang chanel nga ok pa..
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Post by bhongskieboie Wed Mar 21, 2012 3:48 pm

so bale ang duha ka input parihas ra xa ug wiring diay.... nya ang resistor niya boss pila nman ibutang ani? ug usa ang sakto pag butang? salamat daan... bag o paman ko ani boss

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Post by arkin Sat Apr 14, 2012 8:23 pm

copy lng sa gipost..
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Post by Steel Rain Fri Apr 20, 2012 1:32 am

yung booster na ginawa is 50w yung output nya,masyadong mainit yung transistor(MJ2955),my R1(22ohms-5w),R2(330ohms-5w,pero hindi naman nag aamoy sunog yung transistor kahit npakainit nya,normal lang ba yun?

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Post by arkin Fri Apr 20, 2012 10:17 am

masyadong mataas bias mo,d na normal yan.intayin mo pa bang masunog pra mag-amoy sunog? aware plitan mo r2 mo,mga 450ohms-500ohms,depende sa dami ng trasistor mo.
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Post by danny Fri Apr 20, 2012 2:02 pm

try this

audiophonics dot com

similar to our pinoy booster, but this is way better.
It will put our booster in the dust.
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Post by Steel Rain Fri Apr 20, 2012 5:32 pm

yung transistor ko sir is isa sa bawat junction nya,bale sa stereo booster na ginawa ko is 4 lahat.....
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Post by arkin Sun Apr 22, 2012 6:05 pm

eh,tlagang mgbbaga yan.dagdagan mo,khit 4 lng.taasan na rin r2.
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Post by danny Wed Apr 25, 2012 11:27 am

observe the limits of the outputs

minsan share ko din dito yung
40W na amplifier ko
I will make a thread for that one.

stay tuned
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Post by tatikxx4 Sun Jun 03, 2012 8:48 am

mayalin143
sa na e post mo na diagram sa page1 ilang w watts ba ang input at saka output?
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Post by tatikxx4 Sun Jun 03, 2012 8:50 am

at ilang ohms din ang gagamitin dito?
di na ba ntin kailangan gumamit ng caps dito?
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Post by bhongskieboie Fri Jun 15, 2012 9:39 pm

naka patingog nako mga boss ,, naka taghap ko ug assemble jejeje stereo xa pero dili ang kwadro... wala lang templa..... kinsa pwde mo templa dri mga boss?

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Post by danny Sat Jun 16, 2012 4:50 pm

ano raw?
hmmm Question
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Post by 01110011 Sun Jun 17, 2012 5:52 pm

danny wrote:ano raw?
hmmm Question
"naka patingog nako mga boss ,, naka taghap ko ug assemble jejeje stereo xa pero dili ang kwadro... wala lang templa..... kinsa pwde mo templa dri mga boss? "

translation: me nagawa daw s'ya na stereo booster , tumunog daw but it needs "*timpla", tanung nya kung sinu marunong mag modify ng sound ng booster

note:
"TIMPLA" refers to modification of booster, to produce more bass/treble by adding secret daw na mga resistor at caps, sometimes the output transformer is modified
"KWADRO" is a type of booster which has 4 channels, ginagamit ito mostly sa gubat gubat (decibel wars) sa cebu ;D

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Post by Blaze25 Mon Jun 18, 2012 12:01 pm

uu nga sino po may modifications circuit diagram ng tones control nito mga sir bass at treble,sayang din kasi 2pcs AN214 q ic ko dito.


Last edited by Blaze25 on Mon Jun 18, 2012 12:02 pm; edited 1 time in total (Reason for editing : edit)
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Post by 01110011 Mon Jun 18, 2012 7:44 pm

Blaze25 wrote:uu nga sino po may modifications circuit diagram ng tones control nito mga sir bass at treble,sayang din kasi 2pcs AN214 q ic ko dito.
gawa ka muna ng working na an214 amp, tsaka mo na imodify Smile
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Post by Blaze25 Tue Jun 19, 2012 8:46 am

sino po may pcb layout pa upload po..,wag lang kay pagarigan..
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Post by 01110011 Wed Jun 20, 2012 7:42 pm

BOOSTER AMPLIFIER (STEREO) using MJ2955 - Page 2 Img002
courtesy of sir efren from elab Very Happy
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Post by 01110011 Wed Jun 20, 2012 7:43 pm

mods: maglagay ka ng mylar between pin 5 and gnd experiment ng different values
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Post by arkin Fri Jun 22, 2012 1:51 pm

hndi original kp500 circuit Very Happy
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Post by bhongskieboie Sat Jun 30, 2012 9:48 pm

Very Happy Smile Very Happy Smile Smile
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Post by bhongskieboie Sat Jul 21, 2012 11:23 pm

mga masters... ask lang ko ba bahin sa ako booster... init man jud xa pag ayo.. akong output kay 200 nya bale 32 kabuok mj 2955 nya ang pag bias ani kay 10wtts 200 ohm 2 pcs. ug 10wtts 10 ohms 2pcs. asa man akong pagamyan or padak an nga value ani? stereo diay ni akong na himo mga master... na lipong nako sa aso sa led... jejjejejejee salamat daan ninyo mga master... naa jud ko nakat onan ani nga site... more power.........
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Post by arkin Sun Jul 22, 2012 11:22 am

sa batery ok rna,pro sa transformer init na kaayo na.transformer imo gamit?ilisi na 200 og 300.ana jud gusto makat on agwanta sa aso og paso Very Happy
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