TALK @ PhilMusic.com - The Online Home of the Pinoy Musician
The Musician Forums => Guitar Central => Topic started by: rapunzel on August 09, 2009, 11:42:13 AM
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all about sa OHMS and ratings ng speakers.
and KUNG ANO ANG THE BEST BRAND FOR THE TONE.
post everything you know. :evil:
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1st question : pwede ko ba ilagay yung dalawang 8ohm speaker sa 2x12"/ 250watt/ 8ohm solid state amplifier? which it has originally installed with 2x12"/ 16ohms each.
tanong ko lang naman if pwede ko ba gamitin yung dalawang 8ohms intead of 16ohms.
thanks
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tsek mo yung likod ng amp mo kung pwdeng mono??? pag pwede... pwedeng isaksak isang 8ohm speaker so patay yung isa....
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tsek mo yung likod ng amp mo kung pwdeng mono??? pag pwede... pwedeng isaksak isang 8ohm speaker so patay yung isa....
ah ok bro. pero kung i-wire ko yung pair of 8ohms ok lang kaya yun? :-)
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sobrang damng speakers meng and they all have their own reasons for exisiting. mayroong mga bottom heavy, treble clarity, mid range punch etc. people also pair two differnt speakers together to get a full range
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FYI lang yung mga blue marvel speakers are made by EMINENCE. :evil:
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ok lang ata sir rapunzel as long as kaya nung amp yung total watts ng speaker mo. :-D but ask pa rin the professionals.haha!
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ok lang ata sir rapunzel as long as kaya nung amp yung total watts ng speaker mo. :-D but ask pa rin the professionals.haha!
ok bro hehehehe! :-D
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1st question : pwede ko ba ilagay yung dalawang 8ohm speaker sa 2x12"/ 250watt/ 8ohm solid state amplifier? which it has originally installed with 2x12"/ 16ohms each.
tanong ko lang naman if pwede ko ba gamitin yung dalawang 8ohms intead of 16ohms.
thanks
check mo connections ng old speakers if parallel or series..
parallel: 16/2= 8ohms (cab rating) 8/2 = 8ohms
series: 16*2=32 (cab rating) 8*2 = 16 ohms
based on the calculations above, you could not run two 8ohms to raplace the 16ohms, its posible to run only one 8ohm speaker.
take note of the impedance rating of your amp, a rating mismatch could damage your amp. :?
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http://talk.philmusic.com/board/index.php/topic,128875.0.html (http://talk.philmusic.com/board/index.php/topic,128875.0.html)
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Technically, a SS amp can accept a load of the same or higher value... even an open load as opposed to a tube amp.
But of course, the transfer of power is not as efficient with an imp mismatch.
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Technically, a SS amp can accept a load of the same or higher value... even an open load as opposed to a tube amp.
But of course, the transfer of power is not as efficient with an imp mismatch.
sir may ym ka ba? :-) few questions lang. thanks sa info 8-)
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Technically, a SS amp can accept a load of the same or higher value... even an open load as opposed to a tube amp.
But of course, the transfer of power is not as efficient with an imp mismatch.
so pwede mag step up ng ohms ang mga solid state amps? example: my 8ohm 2x12 cab can go up to 16ohms?
so pwede ko ba palitan yung 2pcs 16ohms(wired in prallel) speakers nya with 2pcs 8ohms(wired in series) ?
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check mo connections ng old speakers if parallel or series..
parallel: 16/2= 8ohms (cab rating) 8/2 = 8ohms
series: 16*2=32 (cab rating) 8*2 = 16 ohms
Two 8ohm speakers in parallel will give you 4ohms not 8ohms.
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dami kasi kailangang icompute sa mga ganito. ahahaha! :lol:
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oo nga eh hehehe!
mga bro safe ba lagyan ng two 8ohm speaker yung 8ohm amplifier ko? originally meron sya ngayong two 16ohm speakers. balak ko palitan ng two 8ohm speakers. safe ba yung mismatch na yun?
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up lang :-)
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Based dun sa mga data na binigay mo. . . di ko lang alam kung ano wattage nung speaker na plan mo ikabit . . but i hope na its equal or higher wattage dun sa amp mo(but not so much). . . plan mo na ikabit na parallel yung 8ohms mo na speaker its ok but safer if you connect it in series kasi yung dati is 16 ohms in parallel which makes it 8 ohms. . sa semiconductor type na amp if you connect lower impedance dun sa rated nya . . it will run hotter but louder. . higher than rated it will run colder but not as loud. . . :-D
ps. . kung inoperate mo yung amp at lower rated impedance na di nya kaya it will result in what they call thermal runaway or sunog yung power transistor nung amp.
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Based dun sa mga data na binigay mo. . . di ko lang alam kung ano wattage nung speaker na plan mo ikabit . . but i hope na its equal or higher wattage dun sa amp mo(but not so much). . . plan mo na ikabit na parallel yung 8ohms mo na speaker its ok but safer if you connect it in series kasi yung dati is 16 ohms in parallel which makes it 8 ohms. . sa semiconductor type na amp if you connect lower impedance dun sa rated nya . . it will run hotter but louder. . higher than rated it will run colder but not as loud. . . :-D
ps. . kung inoperate mo yung amp at lower rated impedance na di nya kaya it will result in what they call thermal runaway or sunog yung power transistor nung amp.
hi sir thanks for the info. :-) originally naka install ngayon two 80watts 16ohms. and plan ko ilagay two 70watts 8ohms. so ok lang ba mag step up ng ohms yung 2x12 solid state amplifier ko? :-)
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most amplifier can operate in 4, 8 or 16 ohms impedance, kung parallel mo 8ohms speaker then it will be 4 ohms impedance. . . just check if nag iinit yung heatsink nung power amp na you can bear to touch it (di sobra init)when you operate it in the level you intend to use it. . kung mahawakan mo pa . . no prob. . pag di mo mahawakan . . .operate it nalang sa higher impedance. . series mo nalang speaker. . .
ps.. . when you use lower impedance speaker(load) dun sa amp na naka design sa high impedance. . . it might see it as shorted kaya medyo delikado than if u mas mataas ang impedance nung load. . .
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most amplifier can operate in 4, 8 or 16 ohms impedance, kung parallel mo 8ohms speaker then it will be 4 ohms impedance. . . just check if nag iinit yung heatsink nung power amp na you can bear to touch it (di sobra init)when you operate it in the level you intend to use it. . kung mahawakan mo pa . . no prob. . pag di mo mahawakan . . .operate it nalang sa higher impedance. . series mo nalang speaker. . .
ps.. . when you use lower impedance speaker(load) dun sa amp na naka design sa high impedance. . . it might see it as shorted kaya medyo delikado than if u mas mataas ang impedance nung load. . .
ah ok sir i-series ko nalang yung dalawang 8ohms para mas safe. thanks sa info sir! :-D
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ah ok sir i-series ko nalang yung dalawang 8ohms para mas safe. thanks sa info sir! :-D
mas safe kung gamitin parin kung SS yung amp mo kung anu yung nakadesign or default connection ng drivers if yung dati mo is 8ohms in series or 16ohms in stereo... matanung lang ilan ba yung saksakan para sa speakers is it mono lang or stereo???... picture naman ng likod ng amp para matulungan ka...
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ok sir post ko mamaya. down ata server ng photobucket ayaw mag load.
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educational dito about amps ah...good to know some things. :lol:
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SAN BA NANGGAGALING ANG TONE NG SPEAKER? sa cone? coils? magnets?
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SAN BA NANGGAGALING ANG TONE NG SPEAKER? sa cone? coils? magnets?
Generally its the combination of those. . . the material of the cone itself and also yung design. . . the type of coil used(copper, alluminum, etc) and insulation, and type of magnets used (alnico, ceramic, samarium, lately used is neodymium). .
At isa sa pinakamahalaga sa speaker ay yung enclosure(type) and material(wood) na paglalagyan o pagkakabitan nung speaker. . . at mahalaga din na tama yung design sa intended purpose which it will be used. . .
hope it helps. . . maski konti :-D. . .
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Generally its the combination of those. . . the material of the cone itself and also yung design. . . the type of coil used(copper, alluminum, etc) and insulation, and type of magnets used (alnico, ceramic, samarium, lately used is neodymium). .
At isa sa pinakamahalaga sa speaker ay yung enclosure(type) and material(wood) na paglalagyan o pagkakabitan nung speaker. . . at mahalaga din na tama yung design sa intended purpose which it will be used. . .
hope it helps. . . maski konti :-D. . .
ohhhh thanks sa info sir. very informative para sa mga tulad ko na wala masyado idea about sa speakers. :-D
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another QUESTION para sa mga co-forumites natin.
Q: OK LANG BA PAGSAMAHIN SA 2X12 CAB AMPLIFIER ANG 75WATTS SPEAKER SA 65WATTS SPEAKER?
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ADDITIONAL INFO: para sa mga bagong bili na amps or speakers, kelangan nyo pa pala i-BREAK IN ang speakers para lumabas yung totoong tone nya. kasi pag bago pala matigas pa and hindi pa loose yung speakers so msyadong SHRILL-ish ang tunog. so todo nyo ang BASS & MIDDLE, TREBBLE about a half. then play it for atleast an hour.
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another QUESTION para sa mga co-forumites natin.
Q: OK LANG BA PAGSAMAHIN SA 2X12 CAB AMPLIFIER ANG 75WATTS SPEAKER SA 65WATTS SPEAKER?
anu to seseriess connection in mono or will run them in stereo??...alam ko kasi pwede aslong as same resistance nila pro yung amp same yung buga on both drivers/speakers malamang mas unang bibigay yung mas mababang wattage if di kakayanin sunog yung amp/speakers...ofcourse mangyayare lang yun pag talagang malakasan na yung volume..might be wrong though
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anu to seseriess connection in mono or will run them in stereo??...alam ko kasi pwede aslong as same resistance nila pro yung amp same yung buga on both drivers/speakers malamang mas unang bibigay yung mas mababang wattage if di kakayanin sunog yung amp/speakers...ofcourse mangyayare lang yun pag talagang malakasan na yung volume..might be wrong though
nyay.. buti nalang nasabi mo yan bro. balak ko pa naman gawin yan.. :roll: thanks bro.
il keep posting some questions here para sa ibang forumite na din.. :-)
thanks fellow philmusicians!
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another QUESTION para sa mga co-forumites natin.
Q: OK LANG BA PAGSAMAHIN SA 2X12 CAB AMPLIFIER ANG 75WATTS SPEAKER SA 65WATTS SPEAKER?
Yes. For as long as your 2 speakers combined match your amp's required impedance.
On a side note, if you mix more than one speaker, the effective power handling is THE NUMBER OF SPEAKERS X THE WATTAGE OF THE LOWEST SPEAKER.
In the case of mixing a 25W speaker and a 75W speaker, you effectively have a power handling of 25WX2 = 50W.
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hmmm...ganun pala dapat may break in din ang amp.haha! parang sasakyan ha? :lol:
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@ skunkyfunk sir do you have mathematical explanation regarding 25w combined with 75w speakers = 25w x 2 which is 50? havnt seen any formula for that sir.. :-D
consider this link:
http://www.termpro.com/articles/spkrz.html
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@ skunkyfunk sir do you have mathematical explanation regarding 25w combined with 75w speakers = 25w x 2 which is 50? havnt seen any formula for that sir.. :-D
consider this link:
http://www.termpro.com/articles/spkrz.html
To make my explanation as "simple" as possible, consider each speaker as a 'cave". Say you had to pass all 4 caves, the first 2 of which are wide, and the subsequent 2 are narrow. If you were too fat, you cannot pass all of the caves even if you were able to get past the two wide ones.
Same thing applies for speaker power handling. Even if you had a 100w speaker mixed with a 20W speaker, whether in series or parallel, the effective power handling is just 20WX2 = 40W. (The wide cave is the 100W and the narrow cave is the 20W). getz?
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basic ohms law and impedance matching nalang..... dami sa goggle
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basic ohms law and impedance matching nalang..... dami sa goggle
I think nako-confuse siya sa POWER HANDLING versus power as a result of ohm's law.
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1st question : pwede ko ba ilagay yung dalawang 8ohm speaker sa 2x12"/ 250watt/ 8ohm solid state amplifier? which it has originally installed with 2x12"/ 16ohms each.
tanong ko lang naman if pwede ko ba gamitin yung dalawang 8ohms intead of 16ohms.
thanks
2 speakers @ 16ohm each?... if wired in parallel is actually 8 ohms... make sense since most power amps are rated at 8 ohms that's a perfect impedance match... a good design (safety factor considered)
now what you want is to use 2 8ohms instead of 16ohm.... wired in parallel that would be 4 ohms..... hook it up to an amp that is rated 250W at 8ohm yields twice the power according to ohms law.... meaning the amp that says 250w at 8ohm theoretically now is rated at 500w at 4ohm load. that means if connected to 2 8ohm speakers rated 250w wired in parallel yields a mirror rating of 500w 4 ohm load.
eh sa madaling salita pwede.... the difference is you get more power (power factor considered)
pero what puzzles me is that i dont see any single speakers at 16ohm in the last 10 years or so :|
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in simplest terms just pay more attention towards impedance matching more than the exact wattage. in reality there are no exact wattage... thats why the term used is rating... and most practitioners either prefer the amp is 50% stronger than the speakers or the other way around.... i'd prefer the the former
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may question po ako: meron po akong laneylx20r 15watts amp, kapag outdoor di marinig kaya balak kong magkabit ng konzert 12inches speaker para naman lumakas lakas ang tunog, ok lang po ba ang gagawin ko? di po kaya masira amp ko? ano po dapat na i-consider sa pagkabit ng speaker sa amp ko. tia
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you'll need a bigger amp altogether outdoor ba kamo?
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all about sa OHMS and ratings ng speakers.
and KUNG ANO ANG THE BEST BRAND FOR THE TONE.
post everything you know. :evil:
what kind of music are you into? and what type of tone are you looking for?
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I have a Peavey Valveking 8 with an 8 inch speaker.
Are there replacement "branded" 8 inch speakers available here?
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ANYONE KNOWS A SHOP IN MANILA NA NAGMOMODIFY O NAG AAYOS NG AMPLIFIERS>>AROUNG MANILA LNG PO>>SALAMT
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Guyz ask lng poh...anu poh ung cheap replacement nang guitar speakers|???ok ba ung instrumental speakers at mid range speakers??wat is the diference with the 2???
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Dagdag lang, when mixing different speakers, also look into their respective efficiency/sensitivity ratings ang make sure they are not more than 3 decibels apart. Pag mas mataas pa ron, the more effiecient speaker might drown out the others in the combination.