Alex J
PROBLEM:
What happens if you put a 2 ohm speaker in a circuit that is Suppose to have a 10 ohm speaker?
Context:
I work out 1.2amps @ 12 volts = 14.4 watts power @ 10 ohms
then,-------1.2amps @ 9 volts = 10.8 watts power @ 7.5 ohms
these are all odd numbers.
what will happen if i put a 2 ohm or 4 ohm speaker in one of those circuits?
note. the amplifier will have a fan on it...
this is the amplifier: http://www.maplin.co.uk/module.aspx?moduleno=220055
Answer
It looks like you misread the specs. What I see is 32 watts into 8 ohms. I don't see anything about a 10 ohm speaker. It will operate at voltages from 10 to 44 volts DC. This means you could power this amp with a 12 volt battery with no problem.
2 ohm speakers are normally meant for high output current amplifiers. They get the most power out for those situations that need the power or where you simply want the power.
An amplifier that is designed for 10 ohm speakers probably needs 10 ohm speakers. You'll see higher ohm speakers in many battery powered devices. This limits the amount of power demand from the battery and helps with battery life. Pagers, hand held 2-way radios, etc, will have speakers around 35 ohms or so.
Depending on the amplifier, you can connect the 2 ohm speakers. Many amps today don't really care what the speaker impedance is, they simply put out the power. You can still adjust the volume to get the amount of sound you want. Still, other amps are fussy about the speaker impedance. You'll need to determine if your amp is one that can handle about any impedance or needs the correct impedance.
It looks like you misread the specs. What I see is 32 watts into 8 ohms. I don't see anything about a 10 ohm speaker. It will operate at voltages from 10 to 44 volts DC. This means you could power this amp with a 12 volt battery with no problem.
2 ohm speakers are normally meant for high output current amplifiers. They get the most power out for those situations that need the power or where you simply want the power.
An amplifier that is designed for 10 ohm speakers probably needs 10 ohm speakers. You'll see higher ohm speakers in many battery powered devices. This limits the amount of power demand from the battery and helps with battery life. Pagers, hand held 2-way radios, etc, will have speakers around 35 ohms or so.
Depending on the amplifier, you can connect the 2 ohm speakers. Many amps today don't really care what the speaker impedance is, they simply put out the power. You can still adjust the volume to get the amount of sound you want. Still, other amps are fussy about the speaker impedance. You'll need to determine if your amp is one that can handle about any impedance or needs the correct impedance.
£5000 budget for home cinema including TV, amp speakers, blu-ray player what should I buy?
Mike
Answer
When assembling a complete A/V system for a home cinema I recommend putting the greatest emphasis on the display, which will always be the centerpiece of any good home cinema system. In this regard the Panasonic V Series plasma TVs are currently some of the best values you will find in terms of performance versus price. With respect to the average room and viewing distance make every effort to purchase a display size no smaller than 50 inches diagonal.
The next priority item would be a good Blu-ray Disc player with high performance DVD-upscaling capability. (There are still far more movies and misc. videos available on DVD-Video than Blu-ray Disc so do not discount the importance of quality DVD upscaling.) With your budget in mind I strongly recommend the nonpareil OPPO Digital BDP-83 Blu-ray Disc Player. (Yes there are other BD players that provide nearly equal performance with Blu-ray Discs for less money, however at the present time those manufacturers simply are unable to match OPPOâs expertise when it comes to upconverting/upscaling content on DVDs.) If you also enjoyâor have an interest inâplaying video games (or have children) then one of the latest Sony PlayStation 3 consoles would be an acceptable alternative.
First and foremost you should avoid a home-cinema-in-a-box, especially with the budget within which youâre working. Below, Iâve listed several highly competent, well-respected performers to choose from when it comes to multichannel A/V home cinema receivers. As a general rule of thumb I recommend receivers rated for a minimum of at least 90 to 100 Watts CONTINUOUS PER CHANNEL into 8 Ohms while driving at least two or more channels. Even better yet would be a multichannel receiver rated for continuous output into 4 Ohms (if you can find one in your price range.) The ultimate equipment configuration would consist of a preamplifier / processor (aka âpre-proâ) combined with a multichannel audio power amplifier or multiple audio power amplifiers.
A multichannel home cinema loudspeaker system is the most difficult item to recommend because subjective and personal preferences always play a major role in the selection process. Nevertheless, I have listed some of the better brands and models from which to choose. By the way, if need be, rather than compromise in order to acquire a 7.1-channel or greater surround sound system, itâs better to start with a higher quality, higher performance 5.1 surround sound loudspeaker system now to which you can easily add loudspeakers for the remaining surround and/or LFE channels later. On the other hand, when it comes to very high performance, low cost subwoofers the choice is simple: choose either a HSU Research ULS-15 or an SV Sound Ultra-13-equipped subwooferâwhichever provides the lowest total cost to youâif you want one or more of the most cost-effective, high performance commercial subwoofers currently available.
To complete your system add: one of the Logitech Harmony universal remotes, heavy duty loudspeaker mounting brackets or stands, good quality interconnects and loudspeaker cabling (which need not be expensive,) cable management accessories, power conditioners and a couple of display and system optimization (aka âcalibrationâ) discs.
######################## RESOURCES ########################
â HIGH-DEFINITION OPTICAL DISC PLAYERS
OPPO Digital
â BDP-83 Blu-ray Disc Player
http://www.oppodigital.com/players.asp
â BDP-83 Blu-ray Disc Player Reviews
http://www.oppodigital.com/blu-ray-bdp-83/blu-ray-BDP-83-Review.aspx
â DISPLAYS
Panasonic
â V Series NeoPDP Full HD Plasma TVs
http://panasonic.net/avc/viera/eu/product/v_plasma.html
â TX-P50V10 VIERA NeoPDP Full HD Plasma Television
http://www.panasonic.co.uk/html/en_GB/2515721/module/general/compare/productsCategory.html
Panasonic TX-P42V10 (TX-P50V10) Review
http://www.hdtvtest.co.uk/news/panasonic-tx-p42v10-tx-p50v10-20090602153.htm
Panasonic Viera V10 (TX-P58V10) Review
http://reviews.cnet.co.uk/televisions/0,39030218,49303858,00.htm
AVForums
â Panasonic TX-P50V10 Review
http://www.avforums.com/reviews/Panasonic-TX-P50V10-Review.html
â Panasonic TX-P65V10 Plasma HDTV Review
http://www.avforums.com/reviews/Panasonic-TX-P65V10-Plasma-HDTV-Review.html
â Panasonic TX-P58V10
http://www.avforums.com/forums/plasma-televisions/1045489-panasonic-tx-p58v10.html
â MULTICHANNEL AUDIO/VIDEO RECEIVERS
Arcam FMJ AV Amplifiers
http://www.arcam.co.uk/products,fmj,AV-Amplifiers.htm
Integra Home Theater Multizone, Multichannel DTR Series Receivers
http://integrahometheater.com/prod_class.cfm?class=Receiver
Marantz A/V Receivers (model SR6004 or better)
http://www.marantz.com/new/index.cfm?fuseaction=Products.ProdCat&cont=eu&bus=hf&type=avr&series=comp
NAD Electronics - A/V Receivers
http://nadelectronics.com/products/av-receivers
Onkyo A/V Surround Home Theatre Receiver (model TX-SR607 or better)
http://www.eu.onkyo.com/indices/A_V_Receiver_5917373.html
Pioneer Audio/Video Receivers and Amplifiers (model VSX-1019AH-K or better)
http://www.pioneer.eu/eur/products/42/98/405/overview.html
â LOUDSPEAKERS*
HSU Research ULS-15 Subwoofers
http://www.hsuresearch.com/subwoofers.html
SV Sound (Ultra-13 High Output Subwoofer Driver equipped) Subwoofer
http://www.svsound.com/products-sub.cfm
Aperion Audio
â Intimus 4T Hybrid SD
http://www.aperionaudio.com/product/Intimus-4T-Hybrid-SD,170,70,416.aspx
â Intimus 5B Harmony SD
http://www.aperionaudio.com/product/Intimus-5B-Harmony-SD,118,71,271.aspx
â Interactive System Builder
http://www.aperionaudio.com/flash/isb.aspx
Ascend Acoustics
http://www.ascendacoustics.com
Athena Technologies (Audition Series or LS Series)
http://www.athenaspeakers.com
Definitive Technology (ProCinema Compact High Definition Satellite Speakers)
http://www.definitivetech.com/Products/
Energy Speakers (Take SAT and RC-Mini Bookshelf Speakers)
http://www.energy-speakers.com/na-en/products/
KEF HTS3001SE Satellites
http://www.kef.com/GB/surroundsound/satellite/hts3001se
AVS Forum: KEF KHT 3005 First Impressions
http://www.avsforum.com/avs-vb/showthread.php?t=711684&pp=60
Mirage (omnidirectional satellite loudspeakers; MX Series)
http://www.miragespeakers.com/na-en/products/
Paradigm (Cinema⢠Series satellites)
http://www.paradigm.com/en/paradigm/speaker-type-fronts.paradigm
Polk Audio
â TSi200 and/or TSi100 High Performance Bookshelf Loudspeakers
http://www.polkaudio.com/homeaudio/tsi/index.php
â RTi A1 High Performance Bookshelf Loudspeaker
http://www.polkaudio.com/homeaudio/rtia/index.php
PSB Speakers - Image Series; Alpha Series
http://www.psbspeakers.com
*(All satellite loudspeakers should be matched with their corresponding center-channel loudspeaker.)
â INTERCONNECTS & CONNECTIVITY¹
Accell Cables - HDMI Cables and Adapters
http://www.accellcables.com/products/videoCables/HDMI/hdmiCablesSelect.htm
Acoustic Research HDMI Cables
http://www.araccessories.com/interconnects.html
Blue Jeans Cable
http://www.bluejeanscable.com
Foxconn Technology Group - HDMI Cable Assemblies
http://www.foxconn.com/NWInG/Search/Product_Series_Details.asp?P_Industry=&P_Type=Cable+Assembly&P_Family=External+Cable+Assembly&P_Series=HDMI+Cable+Assembly&FeatureArray=&ValueArray=&searchTypeID=1
Master Hill Electric Wire & Cable
http://www.maxcable.com
SURE-FIRE Electrical Corporation
http://www.sure-fire.com.tw/page/products-hdmi_cable-en.html
Tartan Cable - HDMI Cables
http://www.tartancable.com
TSAY-E International
http://www.tsaye.com.tw/hdmi.html
¹(Always compensate for longer cable runs by choosing interconnects that use heavier gauge conductors. Also keep in mind that the performance for nearly all similarly rated HDMI interconnects less than roughly 3 meters in length will be indistinguishable from one another regardless of price.)
################## ADDITIONAL RESOURCES ##################
Audio-Video & Home Theater Resources
http://docs.google.com/View?id=dhpmqnbb_19t3j6xkgs
Yahoo! Answers
â What Blu-ray player do you think is best?
http://answers.yahoo.com/question/index?qid=20081224201516AAyuOrC
â Which television under $10,000 has the best PQ?
http://answers.yahoo.com/question/index?qid=20090822154509AAb5GCc
â Iâm trying to decide between several 65-inch televisions?
http://answers.yahoo.com/question/index?qid=20091106150319AANo5xg
â Are the LCD-based LED TVâs here to stay?
http://answers.yahoo.com/question/index?qid=20091024075730AAw4pS6
â Vertical Banding? Need Your Help
http://answers.yahoo.com/question/index?qid=20091017072509AAP43jd
LCD Specs Playing with Your Eyes
http://www.hdtvmagazine.com/articles/2008/01/lcd_specs_playing_with_your_eyes.php
Plasma vs. LCD Technology
http://docs.google.com/View?id=dhpmqnbb_13d5pfk3fx
Aperion University - Learn About Home Theater, music and Sound
http://www.aperionaudio.com/catalog/View-All-Courses,49.aspx
Practical Home Theater Guide
http://www.practical-home-theater-guide.com
Dolby Home Theater Buying Guide
http://www.dolby.com/consumer/home_entertainment/buyingguide.html
CE Pro
â How to Choose the Right HDMI Cable
http://www.cepro.com/article/how_to_choose_the_right_hdmi_cable
â When HDMI Cables Short-out a System
http://www.cepro.com/article/when_hdmi_cables_short_out_a_system/
Blue Jeans Cable - Index to Articles
http://www.bluejeanscable.com/articles/index.htm
Extron Electronics: Understanding Cables in the AV Industry - Index
http://www.extron.com/company/article.aspx?id=ucabavi-00&version=print
Audioholics â AV University â Cables and Interconnects
http://www.audioholics.com/education/cables
Â
When assembling a complete A/V system for a home cinema I recommend putting the greatest emphasis on the display, which will always be the centerpiece of any good home cinema system. In this regard the Panasonic V Series plasma TVs are currently some of the best values you will find in terms of performance versus price. With respect to the average room and viewing distance make every effort to purchase a display size no smaller than 50 inches diagonal.
The next priority item would be a good Blu-ray Disc player with high performance DVD-upscaling capability. (There are still far more movies and misc. videos available on DVD-Video than Blu-ray Disc so do not discount the importance of quality DVD upscaling.) With your budget in mind I strongly recommend the nonpareil OPPO Digital BDP-83 Blu-ray Disc Player. (Yes there are other BD players that provide nearly equal performance with Blu-ray Discs for less money, however at the present time those manufacturers simply are unable to match OPPOâs expertise when it comes to upconverting/upscaling content on DVDs.) If you also enjoyâor have an interest inâplaying video games (or have children) then one of the latest Sony PlayStation 3 consoles would be an acceptable alternative.
First and foremost you should avoid a home-cinema-in-a-box, especially with the budget within which youâre working. Below, Iâve listed several highly competent, well-respected performers to choose from when it comes to multichannel A/V home cinema receivers. As a general rule of thumb I recommend receivers rated for a minimum of at least 90 to 100 Watts CONTINUOUS PER CHANNEL into 8 Ohms while driving at least two or more channels. Even better yet would be a multichannel receiver rated for continuous output into 4 Ohms (if you can find one in your price range.) The ultimate equipment configuration would consist of a preamplifier / processor (aka âpre-proâ) combined with a multichannel audio power amplifier or multiple audio power amplifiers.
A multichannel home cinema loudspeaker system is the most difficult item to recommend because subjective and personal preferences always play a major role in the selection process. Nevertheless, I have listed some of the better brands and models from which to choose. By the way, if need be, rather than compromise in order to acquire a 7.1-channel or greater surround sound system, itâs better to start with a higher quality, higher performance 5.1 surround sound loudspeaker system now to which you can easily add loudspeakers for the remaining surround and/or LFE channels later. On the other hand, when it comes to very high performance, low cost subwoofers the choice is simple: choose either a HSU Research ULS-15 or an SV Sound Ultra-13-equipped subwooferâwhichever provides the lowest total cost to youâif you want one or more of the most cost-effective, high performance commercial subwoofers currently available.
To complete your system add: one of the Logitech Harmony universal remotes, heavy duty loudspeaker mounting brackets or stands, good quality interconnects and loudspeaker cabling (which need not be expensive,) cable management accessories, power conditioners and a couple of display and system optimization (aka âcalibrationâ) discs.
######################## RESOURCES ########################
â HIGH-DEFINITION OPTICAL DISC PLAYERS
OPPO Digital
â BDP-83 Blu-ray Disc Player
http://www.oppodigital.com/players.asp
â BDP-83 Blu-ray Disc Player Reviews
http://www.oppodigital.com/blu-ray-bdp-83/blu-ray-BDP-83-Review.aspx
â DISPLAYS
Panasonic
â V Series NeoPDP Full HD Plasma TVs
http://panasonic.net/avc/viera/eu/product/v_plasma.html
â TX-P50V10 VIERA NeoPDP Full HD Plasma Television
http://www.panasonic.co.uk/html/en_GB/2515721/module/general/compare/productsCategory.html
Panasonic TX-P42V10 (TX-P50V10) Review
http://www.hdtvtest.co.uk/news/panasonic-tx-p42v10-tx-p50v10-20090602153.htm
Panasonic Viera V10 (TX-P58V10) Review
http://reviews.cnet.co.uk/televisions/0,39030218,49303858,00.htm
AVForums
â Panasonic TX-P50V10 Review
http://www.avforums.com/reviews/Panasonic-TX-P50V10-Review.html
â Panasonic TX-P65V10 Plasma HDTV Review
http://www.avforums.com/reviews/Panasonic-TX-P65V10-Plasma-HDTV-Review.html
â Panasonic TX-P58V10
http://www.avforums.com/forums/plasma-televisions/1045489-panasonic-tx-p58v10.html
â MULTICHANNEL AUDIO/VIDEO RECEIVERS
Arcam FMJ AV Amplifiers
http://www.arcam.co.uk/products,fmj,AV-Amplifiers.htm
Integra Home Theater Multizone, Multichannel DTR Series Receivers
http://integrahometheater.com/prod_class.cfm?class=Receiver
Marantz A/V Receivers (model SR6004 or better)
http://www.marantz.com/new/index.cfm?fuseaction=Products.ProdCat&cont=eu&bus=hf&type=avr&series=comp
NAD Electronics - A/V Receivers
http://nadelectronics.com/products/av-receivers
Onkyo A/V Surround Home Theatre Receiver (model TX-SR607 or better)
http://www.eu.onkyo.com/indices/A_V_Receiver_5917373.html
Pioneer Audio/Video Receivers and Amplifiers (model VSX-1019AH-K or better)
http://www.pioneer.eu/eur/products/42/98/405/overview.html
â LOUDSPEAKERS*
HSU Research ULS-15 Subwoofers
http://www.hsuresearch.com/subwoofers.html
SV Sound (Ultra-13 High Output Subwoofer Driver equipped) Subwoofer
http://www.svsound.com/products-sub.cfm
Aperion Audio
â Intimus 4T Hybrid SD
http://www.aperionaudio.com/product/Intimus-4T-Hybrid-SD,170,70,416.aspx
â Intimus 5B Harmony SD
http://www.aperionaudio.com/product/Intimus-5B-Harmony-SD,118,71,271.aspx
â Interactive System Builder
http://www.aperionaudio.com/flash/isb.aspx
Ascend Acoustics
http://www.ascendacoustics.com
Athena Technologies (Audition Series or LS Series)
http://www.athenaspeakers.com
Definitive Technology (ProCinema Compact High Definition Satellite Speakers)
http://www.definitivetech.com/Products/
Energy Speakers (Take SAT and RC-Mini Bookshelf Speakers)
http://www.energy-speakers.com/na-en/products/
KEF HTS3001SE Satellites
http://www.kef.com/GB/surroundsound/satellite/hts3001se
AVS Forum: KEF KHT 3005 First Impressions
http://www.avsforum.com/avs-vb/showthread.php?t=711684&pp=60
Mirage (omnidirectional satellite loudspeakers; MX Series)
http://www.miragespeakers.com/na-en/products/
Paradigm (Cinema⢠Series satellites)
http://www.paradigm.com/en/paradigm/speaker-type-fronts.paradigm
Polk Audio
â TSi200 and/or TSi100 High Performance Bookshelf Loudspeakers
http://www.polkaudio.com/homeaudio/tsi/index.php
â RTi A1 High Performance Bookshelf Loudspeaker
http://www.polkaudio.com/homeaudio/rtia/index.php
PSB Speakers - Image Series; Alpha Series
http://www.psbspeakers.com
*(All satellite loudspeakers should be matched with their corresponding center-channel loudspeaker.)
â INTERCONNECTS & CONNECTIVITY¹
Accell Cables - HDMI Cables and Adapters
http://www.accellcables.com/products/videoCables/HDMI/hdmiCablesSelect.htm
Acoustic Research HDMI Cables
http://www.araccessories.com/interconnects.html
Blue Jeans Cable
http://www.bluejeanscable.com
Foxconn Technology Group - HDMI Cable Assemblies
http://www.foxconn.com/NWInG/Search/Product_Series_Details.asp?P_Industry=&P_Type=Cable+Assembly&P_Family=External+Cable+Assembly&P_Series=HDMI+Cable+Assembly&FeatureArray=&ValueArray=&searchTypeID=1
Master Hill Electric Wire & Cable
http://www.maxcable.com
SURE-FIRE Electrical Corporation
http://www.sure-fire.com.tw/page/products-hdmi_cable-en.html
Tartan Cable - HDMI Cables
http://www.tartancable.com
TSAY-E International
http://www.tsaye.com.tw/hdmi.html
¹(Always compensate for longer cable runs by choosing interconnects that use heavier gauge conductors. Also keep in mind that the performance for nearly all similarly rated HDMI interconnects less than roughly 3 meters in length will be indistinguishable from one another regardless of price.)
################## ADDITIONAL RESOURCES ##################
Audio-Video & Home Theater Resources
http://docs.google.com/View?id=dhpmqnbb_19t3j6xkgs
Yahoo! Answers
â What Blu-ray player do you think is best?
http://answers.yahoo.com/question/index?qid=20081224201516AAyuOrC
â Which television under $10,000 has the best PQ?
http://answers.yahoo.com/question/index?qid=20090822154509AAb5GCc
â Iâm trying to decide between several 65-inch televisions?
http://answers.yahoo.com/question/index?qid=20091106150319AANo5xg
â Are the LCD-based LED TVâs here to stay?
http://answers.yahoo.com/question/index?qid=20091024075730AAw4pS6
â Vertical Banding? Need Your Help
http://answers.yahoo.com/question/index?qid=20091017072509AAP43jd
LCD Specs Playing with Your Eyes
http://www.hdtvmagazine.com/articles/2008/01/lcd_specs_playing_with_your_eyes.php
Plasma vs. LCD Technology
http://docs.google.com/View?id=dhpmqnbb_13d5pfk3fx
Aperion University - Learn About Home Theater, music and Sound
http://www.aperionaudio.com/catalog/View-All-Courses,49.aspx
Practical Home Theater Guide
http://www.practical-home-theater-guide.com
Dolby Home Theater Buying Guide
http://www.dolby.com/consumer/home_entertainment/buyingguide.html
CE Pro
â How to Choose the Right HDMI Cable
http://www.cepro.com/article/how_to_choose_the_right_hdmi_cable
â When HDMI Cables Short-out a System
http://www.cepro.com/article/when_hdmi_cables_short_out_a_system/
Blue Jeans Cable - Index to Articles
http://www.bluejeanscable.com/articles/index.htm
Extron Electronics: Understanding Cables in the AV Industry - Index
http://www.extron.com/company/article.aspx?id=ucabavi-00&version=print
Audioholics â AV University â Cables and Interconnects
http://www.audioholics.com/education/cables
Â
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Author: Yukie
Thanks For Coming To My Blog
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