Author Topic: What is the consequence of powering a 4 ohms speaker using an 8 ohms receiver? (Read 11290 times)

markcrenz · « **Reply #30 on:** Dec 08, 2010 at 11:29 AM »

Quote from: pekspert on Dec 07, 2010 at 09:03 PM

Now thats a problem

Naka-toroidal transformer na sila and yet...

i don't think here is a relation between the type of transformer used and the amplifier protection circuit.

clipping is also different from protection. an overdriven amp will clip and still continue playing, while an amp in protect mode will shut down.

babed95 · « **Reply #31 on:** Dec 09, 2010 at 11:00 AM »

kahit po yun 4 ohms na speakers eh gagamitin lang as surround hindi pa rin po ubra?

markcrenz · « **Reply #32 on:** Dec 09, 2010 at 05:37 PM »

Quote from: babed95 on Dec 09, 2010 at 11:00 AM

kahit po yun 4 ohms na speakers eh gagamitin lang as surround hindi pa rin po ubra?

if you cross them high (100 hz or higher) and make sure they are not overdriven, pwede.

real irie · « **Reply #33 on:** Mar 03, 2011 at 01:40 PM »

hindi po ba pwede i series connect 4ohms+4ohms speakers = 8 ohms ?

ATJr. · « **Reply #34 on:** Mar 03, 2011 at 02:01 PM »

Quote from: real irie on Mar 03, 2011 at 01:40 PM

hindi po ba pwede i series connect 4ohms+4ohms speakers = 8 ohms ?

pwede......

MX3 · « **Reply #35 on:** Mar 05, 2011 at 07:20 PM »

ok lang yan kung moderate lang ang volume level mo most of the time,saka maririnig mo rin naman kung clipping na ung amp mo wag mo na lakasan kung ganun.

real irie · « **Reply #36 on:** Mar 11, 2011 at 05:51 PM »

pero kung twice ang lakas ng ampli sa driver pwede po diba i series

e.g. ampli 1000 watts 8 ohms = 500 watts 4ohms speaker + 500 watts 4ohms speaker

forgot ko na physic ohms law

ATJr. · « **Reply #37 on:** Mar 11, 2011 at 06:06 PM »

80 watts per channel lang yan.....

ryan750 · « **Reply #38 on:** Mar 15, 2011 at 08:34 PM »

How about connecting a series resistor at the speaker?

you'll waste power at the resistor pero 8 ohms na hehehehe

edison · « **Reply #39 on:** Mar 18, 2011 at 01:00 PM »

Sir makisali na rin, yung po bang sinasabi na 1000watts tapos sabi nyo 80watts lang yan eh car amp? Parang yung V12 ata yan MRV 705..(1000watts x4), bale 250watts/channel, tapos rms nyan is 80watts..

real irie · « **Reply #40 on:** Mar 18, 2011 at 04:02 PM »

d ba mas madali series connect na lang para lumabas na 8ohms basta malakas na amp

vortex1 · « **Reply #41 on:** Mar 18, 2011 at 06:50 PM »

Hi guys, Can I connect a 100 watt speaker on a 140watt/channel AVR?

i'm planning to get a yamaha 467 or onkyo ht 3300 receiver but i want to retain the 5.1 speakers from my yamaha ht 5730. tia.

accastil · « **Reply #42 on:** Mar 29, 2011 at 11:20 AM »

Quote from: newbie pa rin on Dec 03, 2010 at 10:19 PM

I'm planning on getting a new speaker.
Problem is, it has 4ohms impedance.
I will hook this up to my HK 235 which has an 8 ohms impedance and a Bada power amp which has an 8ohms impedance as well.

Will be using this for about 2 - 4 hours per session.
Any long term effects on the speaker, amp and AVR?

depends on how loud are you normally listening.
in this case, your load(speakers) will draw more current from your amp than 8ohm speakers.
if your level gets too loud, the current rush might put your amp into danger of clipping.
youll notice this when sound from your speakers starts to get crazy(garalgal na).
so you can get it but just dont listen too loud.

ATJr. · « **Reply #43 on:** Mar 29, 2011 at 12:47 PM »

Quote from: vortex1 on Mar 18, 2011 at 06:50 PM

Hi guys, Can I connect a 100 watt speaker on a 140watt/channel AVR?

i'm planning to get a yamaha 467 or onkyo ht 3300 receiver but i want to retain the 5.1 speakers from my yamaha ht 5730. tia.

yes you can...

cia · « **Reply #44 on:** Apr 01, 2011 at 08:05 AM »

My speakers are rated at 4 ohms and my amp has both 4ohm and 8ohm tap. When using the 8ohm tap, bass became slightly louder but loose. For the highs and mids, there were no discernable sound differences using either the 4ohm or 8ohm taps.

vortex1 · « **Reply #45 on:** Apr 01, 2011 at 09:52 AM »

Quote from: TonyT on Mar 29, 2011 at 12:47 PM

yes you can...

thanks.

ATJr. · « **Reply #46 on:** Apr 01, 2011 at 01:42 PM »

Quote from: cia on Apr 01, 2011 at 08:05 AM

My speakers are rated at 4 ohms and my amp has both 4ohm and 8ohm tap. When using the 8ohm tap, bass became slightly louder but loose. For the highs and mids, there were no discernable sound differences using either the 4ohm or 8ohm taps.

that is because putting a 4 ohm speaker on the 8 ohm tap reduced the load impedance that your tubes see, thus more power was available to your speakers.....

if you liked this setting, there is no problem if you like to keep it that way...

cia · « **Reply #47 on:** Apr 01, 2011 at 03:22 PM »

Quote from: TonyT on Apr 01, 2011 at 01:42 PM

that is because putting a 4 ohm speaker on the 8 ohm tap reduced the load impedance that your tubes see, thus more power was available to your speakers.....

if you liked this setting, there is no problem if you like to keep it that way...

I prefer using 4ohm tap for the 4ohm speakers. Bass was cleaner, kinda boomy using the 8ohm tap.

repolona · « **Reply #48 on:** Oct 17, 2011 at 03:57 PM »

meron po ako dalwang 4ohms n speaker.

nasira po, tingin po namin nun ikinabit s 8ohms na amplifier (na hiniram lan namin)
napansin nlan namin n nangamoy po yun mismo speaker box.

yun amp buhay naman hanggan ngayn.. yun speaker lan ang ngkrproblema :-(

ntry n rin namin ilabas yun speaker s box para itap sa battery para icheck kun
gumagalaw or tumutunog kahit kaunti.. wla po talga :-(

mga bossing tanong ko lang saan kaya magandang mgprewind para same p rin
yun impendance nun speaker? may mga recommends ba kayo?

salamat

edison · « **Reply #49 on:** Oct 18, 2011 at 11:18 AM »

Kay speaker doctor, under sa speaker thread., i-PM mo Sir...