Surround Receivers

26 Comments on How Much Amplifier Power Do I Need?

  1. Tawthagyi Avatar

    Jason Roy….. The author is talking about sound level at a very huge stadium which holds usually over 60 thousands audience. Just imagine professional amps running between 4000 to 8000 watts per amplifier. Just 50 of them easily reach to 250k watts. Outdoor venue sound require usually minimum 4 watts per audience. Then if it is more than 60k audience 240k watts will be minimal requirement. An example would be Bon Jovi concert in Newzeland in 2010 which use 800 thousand watts of audio. So do you still thinks 250 k watts is impossible number for a sound system.

    • MR.Bill Avatar

      I have a great system for my home and it kicks, A Berihnger NU-6000, New Peavey speaker PV215, 4 Ohm, Behringer EUROLIVE VP2520 4 Ohm speaker, both theses speakers are in parallel into my old Yamaha concert series 15″ bass reflex cabinets with a about a 24″ horn – 8 Ohm. How do I test out wattage being used. I’m sure it’s close to 400 watt with gain half way on amp.

  2. James O'Brien Avatar

    I have an old pair of audio physic speakers rated at 10-140w ,4 ohm
    I have been offered a musical fidelity Tri vista 300 which puts out 600w at 4 ohms.
    In normal lounge room usage at quiet to moderate volumes am I going to kill my speakers or is this a good thing to have a huge amount of power in reserve ?

  3. Jesse Avatar

    I have a 90W RMS/ch amplifier, and my choices of speakers are one with 120W (92db) and the other with 90W (89db). Which speaker would better match my amp ?

  4. Muhd Danial Avatar

    Hi, I have some questions. What will happen if I connect my stereo amplifier with speakers that have same impedances but different wattages? Does the amplifier will balances? And, could it effect the amplifier perfomances? In my case, I connect the left channel output with an 8 ohms 3 watts speaker and the right output with same 8 ohms but 5 watts speaker. These happens after I hit a high volume limits by using only one speaker and it blown up. I replace the blown speaker with a speaker that are same impedance but different wattage.

  5. Johnny Avatar

    I have an outdoor area with 6 x 8ohms 100 watt speakers can you help me calculate the correct Amplifier Watt’s I will need to support all 6 speakers

  6. John Avatar

    Can you help? I need to buy a new amp to power my old Tannoy 611 speakers (bi-wired); I think they’re rated at 6 ohms but I can’t find the original spec. The room is 17sqm. I play mainly soft rock and classical cds through a Cambridge Audio DVD85 player. What power rating should I look for on a good budget amp?
    Thanks in anticipation,

  7. Varsi Klatzkin Avatar

    I’m sure you could help me just not sure if this type of question is in your wheelhouse. We have outdoor activities where we have 4 or so 65 w speakers attached to a Rasio Shack 250 w amp. This has worked fine for 15 years but now the amplifier has blown… This is an outdoor application, do you have any suggestions on what kind of an a.m. would work… We have a microphone hooked up to it also. Not much info I know, just throwing it out there to see if anyone can offer any suggestions. Thanks so much for any help.

  8. Dave Avatar

    Hi there, I have purchased 4no. 300watt 4ohm speakers for an outside patio area and want a decent amplifier to drive them. The music will definitely be dynamic on most occassions when my son and daughter are home. Please help me to get this right or my wife will possibly kill me. I would like to be able to play music through Bluetooth from a phone or ipad too so could you suggest cheapest option for doing this? Thanks in advance.

  9. Gordon Avatar

    We have 8 pairs of speakers scattered around the house that route through one wire it seems, and the current receiver we have doesn’t seem to be able to power all of them. Are there any receivers you would recommend that would be able to handle such a system? The speakers are fairly similar to these: (x6 pairs) but seem to have been installed when the house was built. Also these: are installed (x2 pairs). I’m looking at a receiver like this but am not sure if this would be sufficient to power this home theater system. Thanks in advance!

  10. Allan Avatar

    Hi there, my friend has given me a pre amplifier of rotel model number 1068 and surround speakers of Bose acoustimass 6. 5.1…… Please suggest me on how do I get the system started , do I need a power amplifier as my friend told me , and which one , i seen the rating behind the subwoofer is 100 watts- 8 ohms 0.1 …

  11. Johnny Avatar

    I’m getting a pair of ELAC Debut F6 speakers (6 ohms). I’m trying to figure out if a Yamaha RX-V683 AV Receiver will work well with those speakers, or if a different receiver is needed.Hoping someone can help me out with that.

    • David Avatar

      If you’re only running to those speakers it should be fine. If you’ve got a 5.1 or 7.1 system going with a decent sub you’re going to want more power. Those Elacs sound Soooo much better with more juice. I have the f5s

  12. Robin Gaedtke Avatar

    I have 6 Peavy speakers. SP-1s, a pair of 2s, and a pair of 3s.
    What do you recommend for an amp to fire these up on my deck so the neighbors can also partake of my fine music?

  13. Randy Avatar

    I am looking at a 150w RMS 300 watt peak 2 way speaker. ( 8″ woofer and a 3” x 7” Compression Horn) The speaker in my transceiver sucks. It’s a 2.5″ flattened speaker. I have an external 4″ satellite speaker installed that has no bass response. I listen to a lot of transmissions that use a full range of broadcast quality audio. Small speakers with no full range of response don’t cut it.

    The rated power output of my transceivers amplifier is only 2.5 watts. Will that be enough to drive this speaker? I’m not concerned about loud, I’m jut concerned about being able to drive it at a nominal listening level from a few feet away.. I don’t need to fill the room.


  14. Jack Mann Avatar

    We have a 250 watt amp at our football field. We have 4 outdoor spearkers. One set says 150 watts per speaker. The second set says 100 watts each. Is that enough to make it work without blowing the amp. I have 14 gauge speaker wire with the speakers about 25′ apart. Any info would be greatly appreciated. Looking to get this started Wednesday night.

  15. romano farrocco Avatar

    I have two ESB 7/06 speakers. They were driven by a phase linear amp which a while ago broke down. Now, I just bought a MASTER AUDIO mqa 4100, do you think it can support my speakers well?
    Thanks in advance for your kind response.
    Best regards.

  16. Ram Avatar

    Hi, I have 12 speakers @ 4 ohm impedence per speaker, to be fitted in different rooms. What amplifier capacity needed for this? Is connecting to a 6 zone speaker selector switch solve the problems?

    Appreciate your reply please.

    • I would recommend a multichannel amplifier with in-room volume controls. A 6-zone selector should technically allow those connections to be made, but you could really only run one or two pairs at a time.

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