WHICH IS BETTER, 350 watts nominal or 350 watts peak???

[Woots29]

sakura 5020 pala hehehe

kapag silent period may maririnig kang munting hisssssss sa tweeter

may ganun na konzert. sinauli namin

hehehe

[TinTopHack]

hmm may sakura 5023 dito na kapareho ng konzert 502

pwede natin idesect, anu gusto mo sir tintop?

sige basta me diagram na tama.

[audiomachines]

sakura 5020 pala hehehe

kapag silent period may maririnig kang munting hisssssss sa tweeter

may ganun na konzert. sinauli namin

hehehe

sure na ang arangement ng  ckt. ay volume control+tonecontrol+power amplifier kya my hiss open wide kc ung amplifier section, mas ok pag gani2 arrangement tonecontrol+volume control+power amplifier, pra hindi "open wide" ang power amp.

[ghomer]

sir woots sa ngayon nwala nman akong naririnig ng hiss sound.. may mga chances nga na may defect ung ibang konzert na mabibili mo or nung iba.. ung iba nga kahit low volume ng'cclip ung amp.. tama na ung matching ng speaker pero ganun parin. sa unit na kc ang problem nun.. kaya ako swerte pa kc wla pa nman akong naeexperience na problem sa amp ko.

[amp]

^hehehhe

nalilito nmn ako ngaun

may mga nakita akong mga circuits ng amp

iba iba formula

sie woots29

2lad din yan sapagkatay ng pusa iba iba ang style pwede patayo, pahiga or patuwad. hehehe

[amp]

The way I see it the real RMS power ouput is this:

Supply voltage = +36 / -36V:

This means for a sinewave signal the maximum positive swing is +36V and the maximum negative swing is -36V (assuming rail to rail ang swing.)

This means the maximum peak voltage is 36V. The RMS value is 36 x 0.707 = 25.45V rms. This the maximum rms value you can get out of the output.

So P = (ExE)/R = 25.45 x 25.45 / 8 ohms = 80.97W rms for one channel - BUT this is assuming rail to rail voltage of +/-36V and 100% efficiency from the output stage. In reality you can not get 100% efficiency and you don't get rail to rail output swing. So maybe you just get 60Wrms to 70Wrms per channel into 8 ohms.

sir tiptop

tama nga na overlook ko nga yung RMS supply that should be Vrms= 36volts NOT +/-36volts

Vdc= 36volts x 1.414
Vdc= 50.9 volts

Vrms= 50.9/1.414
Vrms= 36 volts

hehehe

[Woots29]

^heheheh

o bakit nagkatay ka ba ng pusa sir?

speaking ok katay, kinatay ko ung pusa este ung sakura amp na nasa work ko,

eh un pala ung luma pero pinktyuran ko na lahat ng kanto

post ko sana ngaun kaso mabagal net, makulimlim kasi

post ko bukas kapag nasa work na ako. cheers

[TinTopHack]

sir tiptop

tama nga na overlook ko nga yung RMS supply that should be Vrms= 36volts NOT +/-36volts

Vdc= 36volts x 1.414
Vdc= 50.9 volts

Vrms= 50.9/1.414
Vrms= 36 volts

hehehe

Amp - Pls. see below regarding what I'm trying to say -I hope you will agree. Cheers!


Tama ba? Is the DC supply = +/-36VDC?

Or does the 36V refer to the AC output of the transformer secondary - example 36V - 0V - 36V?

[amp]

sir tip top

sa loob ng amp (Konzert AV502a) mayroon secondary  AC 36v-0v-36v  transformer

Vpeak = 36vrms x 1.414
Vpeak = 50.904 volts

and So, there is peak voltage of +/-50.904 volts

Vrms= 50.904Vpk / 1.414
Vrms= 36Vrms

P= E x E / R

P= 36 x 36 / 8

P= 162watts

so ibang pagcalculate naman using the 0.707 constant

Vrms= 50.904 x 0.707
Vrms= 35.989128 or 36volts

and if the Vout in Rms is only 25.4volts what would you think ang gagamitin na transformer?
25v-0-25v secondary.

In reality it easier to measure the voltage of potential across a resistive load than to measure the current flowing across the circuit itself.

sir correct me if im wrong nalilito na rin ako hehehe.

[TinTopHack]

sir tip top

sa loob ng amp (Konzert AV502a) mayroon secondary  AC 36v-0v-36v  transformer

Vpeak = 36vrms x 1.414
Vpeak = 50.904 volts

and So, there is peak voltage of +/-50.904 volts

OK it is clear now. If the ac coming in is 36V - 0V - 36V then tama the Vpeak at the output
will be 50.9V max. You multiply that by 0.707 or divide that by 1.414 will give you back 36V rms
output from the amp.

So ideally you will get 162W rms @ 8 ohms but this is not always possible because the amp will not
really be able to deliver 36v rms due to
- inefficiencies at di sya rail-to-rail
- the drop in +/-50.9V at higher power levels. This drop will depend on your output cap value
which determines the ripple of your +/-V supply and will depend also on the load regulation of your
power transformer that supplies the 36-0-36

Best case you get 150W rms @ 8 ohms

[Woots29]

meron na akong mga pics ng amp na 502

o gusto nyu?

[ghomer]

so woots, ok bah ung porma compare sa sakura???

hehe!... for me mas ok ang front face nya..

[Woots29]

ok din nman. pero mas maganda ung unang konzert at sakura. may mga relay sa selector switch

[ghomer]

sa mga ndi pa nkakapag'komento dito maaari po lamang na kau ay magbigay ng tulong.. hehehe...

nais ko po sana bumuo ng speaker setup para sa isang small outdoor party at iba pa like new year's eve.. ako po ay naguguluhan kung ano ang mas nakararapat para sa aming lugar..

eto po ung place namin,,



ano po ba ang mas malakas and mas powerful pagdating sa outdoor or open place na katulad ng aming lugar, ung 1 pair 12" woofer 3way (ex: tweeter-mid-woofer/tweeter-mid-woofer) o 12" dual

eto po ung pi ng 12" dual na balak kong copyahin..


ndi exactly ganito ang gagwin ko, ung dimension and some other stuff inside kung meron man un lang po ang gagayahin ko.. kc gastos na kung clone na kismo..

maaari po lamang na wag na magmungkahi ng kahit anung SUB dahil tight budget po ako.. short na po kung gagamit pqo ng SUB.. ung mga nabanggit ko lamang po sa taas ang binabalak kong gawin.. 1 pair 12" woofer 3way or 12" dual..

gusto ko po malaman para sa inyo kung ano ang mas nararapat, mas malakas, mas powerful and mas kaya ihandle ang naipakitang lugar sa larawan.. wag na po sana palayuin o gawing complikado ang mga inyong mungkahi, sana po ay ung simple ngunit malinaw at detalyadong paliwanag kung abkit un ang sa tingin ninyo.. salamat poh..