SAKURA AV-200T Tube Amp

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Re: SAKURA AV-200T Tube Amp

Postby reynold » Mon Nov 09, 2009 6:43 pm

docsialu wrote:wow, lakas din ah, kahit 89 db, kaya nya, congrats :clap:


Actually nagulat din ako nung tinest nila sa malalaking speakers dun sa shop nila sa raon, kinabahan pa ako kasi baka di kayanin nung amp, pero at 12 o'clock volume, natabunan na yung tugtog nung mga katabing shops :rock:

parang gusto ko na tulow maniwala dun sa nakasulat na specs na 200 wpc, hahaha kundi lang sana nila nilagay yung "PMPO" baka naniwala ako sa specs, hehehe :D :D :D
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Re: SAKURA AV-200T Tube Amp

Postby endrik35 » Mon Nov 09, 2009 10:03 pm

Reynold, have it tweaked by Anthony, less than 3 k lang ata :)
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Re: SAKURA AV-200T Tube Amp

Postby reynold » Tue Nov 10, 2009 9:05 pm

endrik35 wrote:Reynold, have it tweaked by Anthony, less than 3 k lang ata :)


Pagsasawaan ko muna tunog nya sir, pero malamang ipa-modify ko din sya kaso matatagalan pa siguro yun :)
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Re: SAKURA AV-200T Tube Amp

Postby glink » Tue Nov 10, 2009 10:24 pm

sir saan po sa raon mkakabili ng amp! i'm really curious
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Re: SAKURA AV-200T Tube Amp

Postby highlander » Tue Nov 10, 2009 11:05 pm

glink wrote:sir saan po sa raon mkakabili ng amp! i'm really curious


Got this from PinoyDVD...

Summitron Lights & Sounds Inc
Along Raon main road lang


Hope this helps... ;)
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Re: SAKURA AV-200T Tube Amp

Postby jmyt » Thu Apr 28, 2011 10:29 am

I bought one already and tested it with my TT and JBL speakers, ok......
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Re: SAKURA AV-200T Tube Amp

Postby Tein » Sun Jan 29, 2012 8:38 pm

Bought one for our shop also. "Sound and Vision". So far so good! listened to it for 3hrs straight!
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Re: SAKURA AV-200T Tube Amp

Postby Tein » Sun Jan 29, 2012 8:39 pm

Bought one for our shop also. "Sound and Vision". So far so good! listened to it for 3hrs straight!
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Re: SAKURA AV-200T Tube Amp

Postby leocruz » Mon Jan 30, 2012 2:34 am

Hi Sir,
Curious lang ako anong klaseng tube ang ginamit dito look like 12ax7 at 300b?superb ba pwede bang i upgrade meron din bang preamp na model nyan?please let me know sinong may likha ng unit na yan very intresting mukhang tatalunin ang China high end heeheehe... :clap:
Leo of Dubai...
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Re: SAKURA AV-200T Tube Amp

Postby tenderobject » Mon Jan 30, 2012 5:51 am

nacurous ulit akon dito.. gaano kabigat itong amp na ito at anong preamp ang ok para masalpakan ng tt ito?

UP!
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Re: SAKURA AV-200T Tube Amp

Postby tony » Mon Jan 30, 2012 7:09 am

leocruz wrote:Hi Sir,
Curious lang ako anong klaseng tube ang ginamit dito look like 12ax7 at 300b?superb ba pwede bang i upgrade meron din bang preamp na model nyan?please let me know sinong may likha ng unit na yan very intresting mukhang tatalunin ang China high end heeheehe... :clap:
Leo of Dubai...


this SAKURA AV-200T Tube Amp is a solid state power amp with tube buffers.....FTC power rating is bout 25 watts per channel.....
the 2 bigger tubes are tube rectifiers 5Z4 supplying +-6 volts to a type 4558 ic tone controls......
the 2 smaller tubes are russian 6N2 in a cathode follower configuration....

there is more detailed discussion here: http://www.pinoydvd.com/index.php/topic,102643.690.html
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Re: SAKURA AV-200T Tube Amp

Postby tony » Mon Jan 30, 2012 5:25 pm

there is a potential "time bomb" in this unit, only 1/2 of each tube section is used for each 6N2, the filaments of both sections are lit up and yet one half of each tube do not connect to anything, imho this is not a good thing.....over at the other forum, one member suffered a busted tube, i recomended that both sections of each tube be utilized by paralleling sections.......yung unit ko pinamigay ko sa bayaw ko, he is using it without the 2 big tubes....

you may also try other tubes like 6dj8, 6bq7, 6bk7 or even 7dj8 since the filament voltage i measured is a bit on the high side....the busted 6N2 tube was replaced with a 6N1p tube and the owner liked it better, you may too..... :)
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Re: SAKURA AV-200T Tube Amp

Postby bosing214 » Thu Mar 08, 2012 9:36 pm

gud day po sa lahat ng members,ask ko po about my sakura tube type amplifier(AV-200) dati me naririnig ako bog! sa speaker a few seconds right after turning on the ampli , napuna ko nito last few days wala ng BOG! ako naririnig, is it the sign of a weak tubes? pero ok naman po ang volume malakas pa rin at one year pa lang po ito sakin. paki reply po sana tnx po
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Re: SAKURA AV-200T Tube Amp

Postby tony » Fri Mar 09, 2012 6:51 am

nagbago ang time delay ng output relay mo....

yung 2 big tubes ginamit na dc power supply, yung 2 small tubes ginamit na cathode followers aka buffers....

malayo pa yung tubes sa speaker mo, me dadaanan pang tone control at solid state power amp....
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Re: SAKURA AV-200T Tube Amp

Postby bosing214 » Fri Mar 09, 2012 6:50 pm

[quote="tony"]nagbago ang time delay ng output relay mo....

RC time constant po ba ibig niu sabihin sir... or
di po nagdi-disengage ung contact point ng relay sa output?...sensia na po sa kulit bago lang ako sa vacuum tube d ako familiar sa defect nito
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Re: SAKURA AV-200T Tube Amp

Postby usai » Fri Mar 09, 2012 7:20 pm

bosing214 wrote:..sensia na po sa kulit bago lang ako sa vacuum tube


tony wrote:there is a potential "time bomb" in this unit, only 1/2 of each tube section is used for each 6N2, the filaments of both sections are lit up and yet one half of each tube do not connect to anything, imho this is not a good thing...
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Re: SAKURA AV-200T Tube Amp

Postby tony » Fri Mar 09, 2012 7:30 pm

yes, cathode poisoning is a possibility....the tube sections should be paralleled, the unused section can not be left hanging, it is simply not done with tubes....obviously the chinese designer do not know about this....
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Re: SAKURA AV-200T Tube Amp

Postby bosing214 » Fri Mar 09, 2012 10:38 pm

tnx for the advice.... try ko po replaced this 6n2 to 6np1tube ok lang kaya sir?
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Re: SAKURA AV-200T Tube Amp

Postby tony » Sat Mar 10, 2012 7:03 am

6N1p.....
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Re: SAKURA AV-200T Tube Amp

Postby bosing214 » Sat Mar 10, 2012 7:09 am

ah ok 6n1p...meron po ba kau nito or any other tubes replacement for this 6n2, and how much?
Last edited by bosing214 on Sat Mar 10, 2012 7:14 am, edited 1 time in total.
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