Author Topic: SAKURA AV-200T Tube Amp  (Read 366301 times)

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Offline monreq

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Re: SAKURA AV-200T Tube Amp
« Reply #480 on: Sep 29, 2010 at 04:18 PM »
ayos!

magkano inabot lahat for the tweak?

parang mas tumaba at kalmado ang tunog pero mas ok sana kung same music ang ginamit sa lahat ng test  ;)
Tweak is less than P500.  But the principle of the tweak is the one that counts. Simple lang siya pero madami pinagdaanan para maging simple at effective iyong circuit.  I used various music in order to show the versatility of the audio set up.  Iba kasi maganda lang sa vocals or acoustics.  Masasabi ko kasi ok iyong set up kung di namimili ng music.

Thanks for the comment. :)
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Offline praktikal

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Re: SAKURA AV-200T Tube Amp
« Reply #481 on: Sep 29, 2010 at 05:26 PM »
maganda sana ma side by side ito sa mp5  :)

Offline Schrodinger's cat

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Re: SAKURA AV-200T Tube Amp
« Reply #482 on: Sep 29, 2010 at 10:45 PM »
Tweak is less than P500.  But the principle of the tweak is the one that counts. Simple lang siya pero madami pinagdaanan para maging simple at effective iyong circuit.  I used various music in order to show the versatility of the audio set up.  Iba kasi maganda lang sa vocals or acoustics.  Masasabi ko kasi ok iyong set up kung di namimili ng music.

Thanks for the comment. :)

Wow, galing sir! less than P500? double-wow!!!
Care to share your tweaks sir?  ;D

Thanks in advance.
« Last Edit: Sep 29, 2010 at 10:46 PM by ubunterror »

Offline monreq

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Re: SAKURA AV-200T Tube Amp
« Reply #483 on: Oct 01, 2010 at 08:55 AM »
Wow, galing sir! less than P500? double-wow!!!
Care to share your tweaks sir?  ;D

Thanks in advance.

I love to bro.  But the simple design was from the blood and sweat of rascal 101. It is his creation.  I just assisted him on the experiment to get the proper sound. He can help you tweak your system at a reasonable price and big improvement. :)
« Last Edit: Oct 01, 2010 at 12:54 PM by monreq »
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Offline monreq

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Re: SAKURA AV-200T Tube Amp
« Reply #484 on: Oct 01, 2010 at 08:58 AM »
maganda sana ma side by side ito sa mp5  :)
 
Kahit Cayin bro magandang compare ito at iba pang Tube or Hybrid Tube Amp.  Wala lang kasi location to do the testing.  I am from Cavite and just living in an apartment.  Sana mayroon taga Las Pinas o Alabang na mag offer.  Offer?  Parang special offer  ;D;D
« Last Edit: Oct 01, 2010 at 12:53 PM by monreq »
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Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #485 on: Oct 11, 2010 at 05:51 PM »
Tony, nahimay mo na pala... since one triode lang ginamit ng signal tubes sana you can wire one of the channels to use triode section 2 para pwede pagpalitin lang left and right tubes fresh triodes na naman. But then again, at 3ma baka lolo na tayo buo pa.  ;D


Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #486 on: Oct 11, 2010 at 06:30 PM »
yup, swapping the signal tubes every 6 months i would say, the sections used allows that....  you can even convert this amp to an all solid state amp if one wishes... ;D

those naughty chinese boys surely knows how to play around with tubes.... :D

that should last two lifetimes already!  ;D ;D ;D

yup they do, hindi nga naman gagana pag walang tubes...  ;D


Offline markcrenz

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Re: SAKURA AV-200T Tube Amp
« Reply #487 on: Oct 12, 2010 at 07:28 AM »
all that hype for a tube rectified ss amp?  ;D ;D
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Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #488 on: Oct 12, 2010 at 10:30 AM »
I believe Tony meant the tube rects were used for the opamps only, the amp stage has it's own silicon rects in it's psu...

Offline markcrenz

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Re: SAKURA AV-200T Tube Amp
« Reply #489 on: Oct 12, 2010 at 12:24 PM »
I believe Tony meant the tube rects were used for the opamps only, the amp stage has it's own silicon rects in it's psu...
nga pala. so replacing these tubes with silicon rectifiers will give save about 20 watts, more available power to supply the amplifier. ano nga pala transistors or chip used for the amp?
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Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #490 on: Oct 12, 2010 at 05:24 PM »
nga pala. so replacing these tubes with silicon rectifiers will give save about 20 watts, more available power to supply the amplifier. ano nga pala transistors or chip used for the amp?


yes, and you also save electricity... ;D environment friendly pa sir... ;D




the power amp is a classic discrete quasi-complimentary class AB amp, on my unit, 2SD717 power trannies were used....

 



uy classic nga kung naka quasi-comp siya... 2SD717 looks good already no need to replace/upgrade them unless you intend on increasing the rails...

Offline monreq

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Re: SAKURA AV-200T Tube Amp
« Reply #491 on: Oct 12, 2010 at 11:22 PM »
nga pala. so replacing these tubes with silicon rectifiers will give save about 20 watts, more available power to supply the amplifier. ano nga pala transistors or chip used for the amp?

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Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #492 on: Oct 13, 2010 at 08:32 PM »
Tony,

What are the rails on the amp board?

Jojo

Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #493 on: Oct 14, 2010 at 07:43 AM »
Thanks thanks...

Offline Zitr0

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Re: SAKURA AV-200T Tube Amp
« Reply #494 on: Oct 15, 2010 at 06:49 PM »
sir tony, sir jojo tanung curious lang, would replacing the tube rectifiers with silicone types alter also the sound character since i think the tubes give something to it? or hindi? hehehe!
"NO SPEAKER IS MADE PERFECT, YOUR "EARS" MAKE A SPEAKER PERFECT!"

Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #495 on: Oct 15, 2010 at 09:56 PM »
below is the schematic for the tube rectifiers, one tube for the positive 6volt rail and one tube for the negative 6 volt rail, remember that two rectifier tubes are supplying the input 4558 ic with +/-6 volts, these tubes supplies around 3~4mA current.....what do you think? too much hard work for a measly 80mW consumption!!!

~24 watts spent for a mere 80mW gain..... ???

notice too that the negative rail is a half-wave rectifier whereas the positive rail is a full wave type...




Tony sobra inefficient naman kung 24W spent (mostly for the heaters) then 80mW lang nagagamit! Besides, a +/-6V supply rails for the opamps is a bit on the low side, it may swing it's output very closely to it's rails. Siguro it's better to change it to a  fullwave silicon rect which would be better than a "mestiso" fullwave/halfwave psu? And increase the supply rails for the opamps while you're at it na din.  ;D

Lalamig pa yun tranny pag pinalitan mo ng ss rects...  ;D ;D ;D


sir tony, sir jojo tanung curious lang, would replacing the tube rectifiers with silicone types alter also the sound character since i think the tubes give something to it? or hindi? hehehe!

no Sir it will not alter the sq, but increasing the opamp rails will - but for the betterment of the gear.

nakupo... powering an opamp with a tube rectifier while saying that it will improve the sound character is like walking naked in a gay bar with a sign saying "Rape Me!" (no offense to homosexuals)... 

Offline JojoD818

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Re: SAKURA AV-200T Tube Amp
« Reply #496 on: Oct 16, 2010 at 06:56 AM »
agreed, so out with the rectifier tubes, 2 resistors and 2 0.1ufd caps tapped to the exixting +/-12volt rails...




that's much much nicer for the opamps Tony...  ;)


yes, the filament glow...... ;D

the thing that gives the amp its tubey sound are the cathode followers:

although i am not happy with the lowish plate supplies, i will go along this time.






that sure looks like ala Joe Rasmussen CFs with +/-12V instead of +/-35V  ;D

a symmetrical voltage quadrupler might be your best bet for an increased plate supply while using the existing taps in the tranny... ;D



Offline bigfoot

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Re: SAKURA AV-200T Tube Amp
« Reply #497 on: Oct 16, 2010 at 09:40 AM »
After replacing the tranny, caps, resistors, tubes and op-amps,  I guess you still have a nice casing and volume pot left. :)

Offline monreq

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Re: SAKURA AV-200T Tube Amp
« Reply #498 on: Oct 20, 2010 at 12:03 PM »

that is why this amp is a DIY'ers friend....lot to tweak, lot's of possibilities, limited only by one's imagination... ;D
Sir sa Pasig ka pa din ba or abroad na?  Pag may binisita ko parents ko parinig naman yang Sakura mo...I'll also bring mine.  Thanks. :)
"LEARNING is a NEVER ENDING process.  Only a FOOL will say he already knows everything."

Offline Pecs

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Re: SAKURA AV-200T Tube Amp
« Reply #499 on: Oct 21, 2010 at 12:24 PM »
sir pwede po bang yng last post nyo lang ang e mod ko d ko kasi masyadong maintindihan yng iba, ok lng po ba kng yon lng ang e mod

Offline Pecs

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Re: SAKURA AV-200T Tube Amp
« Reply #500 on: Oct 22, 2010 at 08:16 PM »
thanks sir

Offline extreme teban

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Re: SAKURA AV-200T Tube Amp
« Reply #501 on: Nov 02, 2010 at 03:47 PM »
i was at RAON this afternoon and I inquire about the price of this product.
The lowest price i got was P3,550.00 and the highest is P3,700.00

Do you think P 3,550.00 was the best price? Maybe you know a store that could give much lower price.

Thanks...

Offline wengkapre

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Re: SAKURA AV-200T Tube Amp
« Reply #502 on: Nov 02, 2010 at 03:55 PM »
Lowest price na yan Brader, sa knight audio ako nag-inquire last summer iirc, 3.7k pa noon
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Offline extreme teban

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Re: SAKURA AV-200T Tube Amp
« Reply #503 on: Nov 02, 2010 at 04:04 PM »
Ah ok pre...
Pero okay ba sa ganitong setup... for AUDIO lang indoor at outdoor

2 X 10" KONZERT 300W Subwoofer / 2 X Horn Type Dai-Chi 200W Tweeter per channel
Kakayanin ba ng SAKURA AV-200T Tube AMP or baka may ibang SAKURA AMP kayo marerekomend

newbie lang po ako sa Audio Setup... pa help po kung may iba kayong idea...

 
« Last Edit: Nov 02, 2010 at 04:06 PM by extreme teban »

Offline wengkapre

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Re: SAKURA AV-200T Tube Amp
« Reply #504 on: Nov 02, 2010 at 08:04 PM »
Ah ok pre...
Pero okay ba sa ganitong setup... for AUDIO lang indoor at outdoor

2 X 10" KONZERT 300W Subwoofer / 2 X Horn Type Dai-Chi 200W Tweeter per channel
Kakayanin ba ng SAKURA AV-200T Tube AMP or baka may ibang SAKURA AMP kayo marerekomend

newbie lang po ako sa Audio Setup... pa help po kung may iba kayong idea...

 

I never had a chance na makarinig ng ganyang set-up pa Brader, kaya di ko masasabi, si Brader Monreq ang setup nya Sakura tube amp(modified) + audio nirvana full range speaker, imo perfect combo ang tube amp + full range speaker...may speakers ka na ba or bibili pa lang?
Denon3312|B&W602S2|SVS PBSB2k|10dfs|NAD502|JDLabs|HTPC

Offline extreme teban

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Re: SAKURA AV-200T Tube Amp
« Reply #505 on: Nov 02, 2010 at 08:06 PM »
I never had a chance na makarinig ng ganyang set-up pa Brader, kaya di ko masasabi, si Brader Monreq ang setup nya Sakura tube amp(modified) + audio nirvana full range speaker, imo perfect combo ang tube amp + full range speaker...may speakers ka na ba or bibili pa lang?

wala pa sir bibili pa lang

Offline wengkapre

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Re: SAKURA AV-200T Tube Amp
« Reply #506 on: Nov 02, 2010 at 08:15 PM »
Try mo etong speaker na Genesis ni diy_master:
http://www.pinoydvd.com/index.php/topic,70456.1380.html
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Offline extreme teban

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Re: SAKURA AV-200T Tube Amp
« Reply #507 on: Nov 02, 2010 at 08:44 PM »
sir, mga pang indoor ito... plan ko sana yung pwede rin pang outdoor

Offline wengkapre

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Re: SAKURA AV-200T Tube Amp
« Reply #508 on: Nov 08, 2010 at 09:51 AM »
hindi ako sure na bagay itong amp na to na pang-outdoor...... ;D

+1tb
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Offline eqp2009

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Re: SAKURA AV-200T Tube Amp
« Reply #509 on: Nov 09, 2010 at 10:08 AM »
+1tb
I have an AV200 for a year and wants to convert it to tube output amplifier (DIY). Anybody there could help me get the schematics and part lists? I am new in radio electronics but can solder and knows a little bit of drawings and schematics. I would prefer an SET low watter design using the power supply and pre-amp of AV200.
Thanks.