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#1
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
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#2
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HDMI receiver vs 4 ohm speakers
Those Magnepan's require high current output availability due to their 4 ohm
rating. You are looking at getting a high end, NOT standard consumer brand such as Denon or Sony, receiver such as a Lexicon brand or similar. Quite expensive. -- --DaveW wrote in message ... I'm looking for recommendations for a modern HDMI receiver that is rated to drive my 4 ohm Magnepan 2 speakers. Thanks in advance. |
#3
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
wrote in message ...
I'm looking for recommendations for a modern HDMI receiver that is rated to drive my 4 ohm Magnepan 2 speakers. Thanks in advance. I would look at the NAD receivers. The T-755 and T-765 would drive the 'pans quite well. They are a little pricy, but have the stability that you will need for the 4 ohm loads. I remember years ago, I ran a pair of MG2 with a 40wpc NAD integrated. Joe |
#4
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
wrote in message
] I'm looking for recommendations for a modern HDMI receiver that is rated to drive my 4 ohm Magnepan 2 speakers. Thanks in advance. Receivers that are rated for 4 ohm loads are a bit few and far between. However, your speakers are not the kind of speakers that most people use to push their receivers to the edge. The problem with 4 ohm speakers like yours is that they draw a lot of current from the receiver if you push the receiver to its full output. However, if you avoid pushing whatever receiver you obtain to its limits for extended periods of time, there should be no problem. I have a pair of fairly inefficient 4 ohm speakers (KEF Q15s) that I have used with a standard non-4-ohm rated receiver for extended periods of time without any difficulty. |
#6
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
On Tue, 10 Jun 2008 16:09:21 -0700, Arny Krueger wrote
(in article ): wrote in message I'm looking for recommendations for a modern HDMI receiver that is rated to drive my 4 ohm Magnepan 2 speakers. Thanks in advance. Receivers that are rated for 4 ohm loads are a bit few and far between. However, your speakers are not the kind of speakers that most people use to push their receivers to the edge. The problem with 4 ohm speakers like yours is that they draw a lot of current from the receiver if you push the receiver to its full output. However, if you avoid pushing whatever receiver you obtain to its limits for extended periods of time, there should be no problem. I have a pair of fairly inefficient 4 ohm speakers (KEF Q15s) that I have used with a standard non-4-ohm rated receiver for extended periods of time without any difficulty. I've run many different Maggie models on all kinds of amps from expensive tube amps to cheap Japanese receivers. No problems. I wouldn't worry about it. As speakers go, Maggies are very easy loads for most amplifiers because they are mostly resistive and pretty constant across the audio spectrum. |
#7
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#8
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
On Jun 10, 7:12*pm, JimC wrote:
wrote: I'm looking for recommendations for a modern HDMI receiver that is rated to drive my 4 ohm Magnepan 2 speakers. Thanks in advance. You might consider getting a modern receiver with the features you want plus a decent, high-current amplifier to power your Maggies. Strange, but that may be cheaper than getting a preamp-power amp combination with the same capabilities, or an upscale receiver with the same features and same power capacity. Jim As long as the receiver has analog outputs for the channels you can get any number of good, high current, used amps off fleabay for a couple hundred bucks. Quality solid state amps have been around for a long time now and lots of them work just as well as a new one. Just park it on the floor behind your stuff. |
#9
Posted to rec.audio.high-end
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HDMI receiver vs 4 ohm speakers
"Angus Stewart Pinkerton"
wrote in message As has been stated, Maggies are an easy load due to their low phase angles, so should not stress any decent receiver. This sort of thinking, while correct in its way, has some offsets. Historically, reactive loads have been problems for SS amplfiiers, but modern output devices have addressed that problem well for relatively small incremental costs. The flat impedance curve of the Maggies does create a different kind of challenge, simply because the impedance curve is flat and low. Comparing Maggies to the other speaker mentioned in this thread, the KEF Q15, both speakers have minimum impedance of about 4 ohms. Furthermore, the Q15 is a more difficult load in the sense that it does get signficantly reactive over some fairly wide ranges of frequencies. Here are impedance magnitude and phase curves for the Q15. http://www.pcavtech.com/techtalk/wir...g_lo_right.gif http://www.pcavtech.com/techtalk/wir...hase_right.gif The phase of the impedance curve reaches an extreme of over 60 degrees at 3 KHz. However, the impedance is an OK 8 ohms at this point. The impedance curve reaches a minimum of 3 ohms at 8.5 kHz, but the phase is less than 15 degrees. Note that over much of its impedance curve, the Q15's impedance is greater than 6 ohms Here is impedance magnitude and phase curves for a typical Magnepan speaker: http://www.stereophile.com/images/ar.../Mag16fig1.jpg Note that the speaker's impedance is less than 6 ohms over most of the frequency range. It is uniformly low at low frequencies where much of the power in music resides. The Maganepan's impedance curve does not have the extreme phase angles we see with the Q15. I have used Maggies previously, and now have Apogee Duetta Signatures, but even those notorious amp-busters are actually an easy load (aside from their low electro/acoustic efficiency). The combination of low efficiency, and generally low impedance creates a tough load, but in a different sense than a speaker like the Q15 which probably has a higher average impedance, but is more extremely reactive at some frequencies. I do actually use a Krell to drive the Apogees, but I've tried several cheap amps and receivers on them without audible or thermal problems. I sense that extreme operational conditions like home dance parties and running the amp into clipping for long periods of time was avoided. Again, this is due to their primarily resistive nature, so I wouldn't be overconcerned about the ability of any reputable multi-channel receiver to drive your Maggies. Impossible to give an actual recommendation since you don't mention budget. Agreed. |
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