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Speaker performanc e
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01-06-2012 12:04 PM
So my receiver died last week, luckily it was still during boxing week though so I managed to snag a good deal on a new on at FS ![]()
Anyway, I purchased the new receiver, but for now I have just hooked up the speakers from my old home theatre setup. I know little to nothing about matching speakers to receivers, so I was wondering if someone with more knowledge might take a look at these specs, and maybe offer some insight as to how my current speakers may be underperforming given the new receiver, and what sort of specs I might want to look for when purchasing new speakers (on top of adding 2 more to go from a 5.1 to 7.1 setup of course).
Here are the specs on my current speakers:
Speakers Front Rear Speaker speaker Type 2 Way 3 Speaker 1 Way 1 Speaker Impedance 4 Ω 4 Ω Rated Input Power 155 W 155 W Max. Input Power 310 W 310 W Net Dimensions (W x H x D) 280 x 1200 x 280 mm 98 x 225 x 90 mm Net Weight 4.5 kg 0.8 kg Speakers Center Passive Speaker Subwoofer Type 2 Way 3 Speaker 1Way1Speaker Impedance 4 Ω 3 Ω Rated Input Power 155 W 225 W Max. Input Power 310 W 450 W Net Dimensions (W x H x D) 330 x 110 x 95 mm 182 x 416 x 414 mm Net Weight 1.6 kg 8.2 kg
And here are the specs on my new receiver:
The Yamaha RXV571 A/V receiver lets you enjoy the richness and depth of a full high definition home theatre experience. With 7.1-channel output, sound surrounds you from all directions. And thanks to 6 HDMI inputs and support for 3D technology, you can connect and enjoy the latest high definition components. Receiver Features Power Per Channel - Stereo (RMS) 105 W 0.09% Power Per Channel - Surround (RMS) 105 W @ 0.09% Power Per Channel - Stereo (Peak Power) 105 W @ 0.09% Power Per Channel - Surround (Peak Power) 105 W @ 0.09% Power Per Channel - Stereo 105 W @ 0.09% Power Per Channel - Surround 105 W @ 0.09% High Current No iPod Connection Yes iPod On Screen Display Yes Illuminated Front-Panel Display Yes Graphical User Interface Yes Multi-room Capable No DSP Modes 17 Banana Plug Speaker Terminals Yes Remote Type Universal Output - 4 Ohm Capable No Output - 6 Ohm Capable Yes Audio/Video Synchronization Delay Setting Yes Automatic Speaker Setting Calibration Yes Input Titling Yes Speaker Crossover Settings Global Total Harmonic Distortion (at max rated pow 0.009 FM Radio Yes Satellite Radio Ready No Internet Radio No Wi-Fi Connectivity No Network Ready No Network Functions Supported No DLNA Certified No Windows 7 Ready No Video Options HDMI Video Repeating Upconverting Capability 720p/1080i/1080p Upconverter Chipset Proprietary Component Video Switching Yes Video Transcoding (Conversion) Capability Yes 3D Video Support Yes Audio Return Channel Yes HDMI 1.4 Support Yes Inputs/Outputs HDMI Inputs 6 HDMI Outputs 1 Component Video Inputs 2 Component Video Outputs 1 S-Video Inputs No S-Video Outputs No Composite Audio/Video Inputs 2 Audio/Video; 1 Audio Only; 2 Video Only Composite Audio/Video Outputs 2 Video; 1 Audio Co-axial (S/PDIF) Digital Audio Inputs 2 Co-axial (S/PDIF) Digital Audio Outputs No Optical (Toslink) Inputs 2 Optical (Toslink) Outputs No Discrete Inputs No Phono Inputs No Headphone Jack Yes Headphone Virtual Surround Yes USB Media Input - Audio Yes USB Media Input - Video Not Applicable USB Media Input - Images Not Applicable RS-232 Serial Control No Input/Output Locations HDMI Front 1 - Input HDMI Rear 5 - Inputs; 1 - Output Component Video Front No Component Video Rear 2 - Inputs; 1 - Output S-Video Front No S-Video Rear No Composite Audio/Video Front 1 - Input Composite Audio/Video Rear 5 - Inputs (2 Audio/Video;1 Audio; 2 Video); 2 - Outputs (1 Audio/Video; 1 Video) Coaxial Digital Audio Front No Coaxial Digital Audio Rear 2 - Inputs Optical TOSLink Front No Optical TOSLink Rear 2 - Inputs Audio Formats Dolby TrueHD Yes DTS Yes DTS ES Yes DTS HD Yes Dolby Digital Yes Dolby Pro Logic II Yes Dolby Pro Logic IIx Yes Dolby Pro Logic IIz No Dolby Digital EX Yes Dolby Digital Plus Yes THX Certified No 3D Surround Sound Support Yes - Cinema DSP Physical Features Product Height 15.2 cm Product Depth 36.2 cm Product Width 43.5 cm Weight 8.3 kg Standby Features Standby Power Consumption 0.1 W Remote Functions Enabled Yes HDMI Pass-Through Enabled Yes HDMI Pass-Through Power Consumption 1.2 W Network Enabled in Standby No Warranty Labour 2 Year(s) Warranty Parts 2 Year(s) WebID 10174276
Thanks in advance!
Re: Speaker performanc e
[ Edited ]
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01-13-2012 04:48 AM - last edited on 01-13-2012 04:49 AM
You will eventually damage your receiver and/or speakers. The Yamaha is not capable of properly driving 4Ω speakers. Ω which is the symbol for "Ohm", and is a measure of electrical resistance, the lower the number the higher the load or resistance is, the efficiency is lower, thus more power is required to drive that load.
Most of the speakers that FutureShop sells, with the exception of some of the Martin Logans, are 8 ohm speakers, which is what you require for the Yamaha. For a small to medium room, they have several 5.1 subwoofer/satellite speaker sets from Energy or Polk. Large rooms or open concept are better suited to tower speakers, and also may require a more powerful receiver to take full advantage of what a larger speaker can offer.
Re: Speaker performanc e
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01-13-2012 06:53 AM
Thanks for the response 3M, the associate I talked to when I picked up the receiver said that my current speakers may be damaged eventually, but not the other way around, so good to know. Will definitely jump on the next decent sale for a new set.
Re: Speaker performanc e
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01-26-2012 07:21 PM
Ok, first off the Yamaha amps will support 4OHM (didn't know how to make the symbol). Yamaha actually states and gives power ratings for 4OHM on the spec sheet for the 571 and the amps have a switch in the back to switch from 8/6/4OHM.
Next, are those a set of old HTIB speakers? If so you may have a passive sub and newer amps won't support a passive sub properly.
http://usa.yamaha.com/products/audio-visual/av-rec
Re: Speaker performanc e
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02-09-2012 12:20 PM
What kind of speakers are these? What is the lowest frequency respons they are capable of?
usually a lower impedance speaker on a reciever that is rated for higher impedance loads does not pose a problem providing your speaker isn't capable of playing bass in the super low regions. Bass is hard to drive, so if your speaker is playing low frequencies at a higher volume level your reciever may get a little hotter.
different recievers have different tonal characteristics, and i find some recievers sound better with some speakers better than others.
Future Shop Cambridge
18 Pinebush Road
Cambridge, ON
Re: Speaker performanc e
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02-15-2012 07:56 AM
AudioDog wrote:
Ok, first off the Yamaha amps will support 4OHM (didn't know how to make the symbol). Yamaha actually states and gives power ratings for 4OHM on the spec sheet for the 571 and the amps have a switch in the back to switch from 8/6/4OHM.
- The ratings for 4ohm and 2 ohm are rated as 'Dynamic" or peak power, using a test tone in a lab on one channel driven for a nano-second. Even Yamaha's larger amps are only rated 4ohm stable on 2 channel (fronts) only and NOT on full surround
- There is NO switch, take a look at the photo on the link you posted. Also, the back of the receiver clearly states 6ohm and 8ohm...
A lot of manufacturers will say they "support" or are "compatible" with 4ohm or 2ohm loads. (Martin Logan is another example of a company stating compatibility between their electro-stats and main stream receivers FutureShop carries). This is equivalent to a fork being compatible to a bowl of soup, you simply won't get your moneys worth, and worse yet, you may lose everything.
People need to educate themselves diligently before purchasing.
Re: Speaker performanc e
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02-15-2012 08:46 AM
"People need to educate themselves diligently before purchasing"
Yes they do! And since posting this thread and doing exactly that, I've upgraded to a fantastic set of 8ohm surround speakers that I'm very happy with. Thanks for the responses everyone.
Re: Speaker performanc e
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03-31-2012 05:24 AM
The Yamaha will not be happy with a true 4 ohms load. And if you set the Yamaha for 6 ohms load, you'll loose power output, not a greai idea...
Anyway, specs for speakers are usually worthless so shop with your ears open...
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Re: Speaker performanc e
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03-31-2012 05:29 AM - last edited on 03-31-2012 05:30 AM
3M_3TI8 wrote:
.
A lot of manufacturers will say they "support" or are "compatible" with 4ohm or 2ohm loads. (Martin Logan is another example of a company stating compatibility between their electro-stats and main stream receivers FutureShop carries). .
I don't think FS carries receivers that will be able to drive perfectly the Martin Logan electrostatic floorstanders. You need beefy amplification to do that.
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