Anthem MRX Receivers - 300, 500, 700 Owners Thread & Tweaking Guide - Page 82

12 noon

Most, but not all. Compare the 700 power supply to the NAD 785

NAD claims ( and tests show) their 120 watts is per channel with all channels driven. They accomplish this by having 2 power supplies - 1 for the 2 fronts, 1 for the surrounds. I have heard both of these units in the same sound room with the 4 ohm fronts of medium sensitivity (88 db). There were audible differences in fullness at medium to high listening levels.

Now in the real world where most of us don't have the "perfect" room, no doubt ARC offers superior room correction. In these circumstances, an outboard 2 channel amp could be beneficial for the MRX series.

Can someone please post a picture of the inside of their MRX700 and MRX500.

Chucka

It makes sens to get the MRX300, then just buy an amp to atleast run the fronts, if not all the speakers. Depending on what options or amps you go with, it can end up being just a little more expensive than a MRX700, and be alot more powerful and potentially sound better.

As long as you dont care about HD radio or USB connection, which i dont. It has everything else the same including the I-Pod connection which would work out perfectly.

So lets say I get an Anthem MCA 3 channel Amp to run the front 3, and leave the back 4 to run off of the MRX300. How much power would be going to the rear channels if i am doing 7.1, and how much if i am doing 5.1?

Hey Chucka,

If you haven't already...take a look at posting #72. These are pics of the MRX700.

Here is a good comparison to the Nad T-747 which is rated at 60 watts per channel it tested at a higher watts per channel then the MRX 700 which is rated at 120 wpc (90wpc x 5)



NAD T 747 A/V Receiver HT Labs Measures
HT Labs Measures
Five channels driven continuously into 8-ohm loads:
0.1% distortion at 99.7 watts
1% distortion at 114.0 watts
Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 66.8 watts
1% distortion at 79.8 watts Analog frequency response in Bypass mode:
-0.13 dB at 10 Hz
-0.04 dB at 20 Hz
-0.06 dB at 20 kHz
-3.05 dB at 50 kHz
Analog frequency response with stereo signal processing:
-0.54 dB at 10 Hz
-0.16 dB at 20 Hz
+0.02 dB at 20 kHz
-44.13 dB at 50 kHz

This graph shows that the T747's left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 122.6 watts and 1 percent distortion at 150.4 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 137.4 watts and 1 percent distortion at 197.1 watts.
Response from the multichannel input to the speaker output measures -0.13 decibels at 10 hertz , -0.04 dB at 20 Hz, -0.09 dB at 20 kilohertz, and -3.11 dB at 50 kHz. THD+N from the CD input to the speaker output was less than 0.026 percent at 1 kHz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was -74.11 dB left to right and -76.62 dB right to left. The signal-to-noise ratio with 2.83 volts driving an 8-ohm load from 10 Hz to 24 kHz with A weighting was -108.67 dBrA.
From the Dolby Digital input to the loudspeaker output, the left channel measures -0.04 dB at 20 Hz and -0.04 dB at 20 kHz. The center channel measures -0.04 dB at 20 Hz and +0.10 dB at 20 kHz, and the left surround channel measures -0.04 dB at 20 Hz and +0.11 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.23 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 81 Hz and the upper 6-dB down point at 100 Hz.MJP



Anthem MRX 700 A/V Receiver HT Labs Measures

HT Labs Measures
Five channels driven continuously into 8-ohm loads:
0.1% distortion at 86.3 watts
1% distortion at 93.7 watts
Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 43.9 watts
1% distortion at 52.6 watts Analog frequency response in Stereo mode:
-0.65 dB at 10 Hz
-0.20 dB at 20 Hz
-0.12 dB at 20 kHz
-27.36 dB at 50 kHz
Analog frequency response with signal processing:
-0.65 dB at 10 Hz
-0.20 dB at 20 Hz
-0.10 dB at 20 kHz
-26.12 dB at 50 kHz

This graph shows that the MRX 700's left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 128.6 watts and 1 percent distortion at 160.2 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 164.8 watts and 1 percent distortion at 221.0 watts.
There was no multichannel input to measure. THD+N from the CD input to the speaker output was less than 0.023 percent at 1 kilohertz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was -73.01 decibels left to right and -72.06 dB right to left. The signal-to-noise ratio with an 8-ohm load from 10 hertz to 24 kHz with A weighting was -104.67 dBrA.
From the Dolby Digital input to the loudspeaker output, the left channel measures -0.07 dB at 20 Hz and -0.09 dB at 20 kHz. The center channel measures -0.07 dB at 20 Hz and -0.05 dB at 20 kHz, and the left surround channel measures -0.07 dB at 20 Hz and -0.13 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.53 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 67 Hz and the upper 6-dB down point at 82 Hz.MJP

So now begs the question. If I am going to use the MRX300 as a pre/pro set up, then what would be a good Amp, at a good price? I would like to have more than 100 watts per channel while running a 7.1 setup. My speakers are Paradigm Studio Series speakers and like i said, i would be running a 7.1 set up.

My friend uses an Emotiva 3 ch amp and it works very well at a very good price. He has studio 60s and a CC690 center.
John

Emotiva is clearing out their UPA-7 seven channel amps for about $600. They are 125W/channel amps. Had some decent recent reviews including one at Audioholics.

That is a great price, it was the price for the 3ch amp!
John

Just did arc for the first time. I have no idea if these are bad or good!! Any insight would be great. Thanks

The sub is problematic. Make sure any cutoff freq. dial is moved to bypass or the highest freq. Usually 180 or 150 Hz. Moving the sub is the next thing you can do. What sub are you using?
John

Thanks John. I am using a B&W ASW1000. I had the volume set to half way, phase set to zero and the low pass knob turned down to 40. Its and older sub but thats all that fits in the budget for now. Do the front 3 look ok?

You turned the freq response knob the wrong way. Turn it up to 140

LOL!! 10-4 Can i redo just the sub or do i have to redo the whole thing??
Thanks

Whole thing. Post your next ARC measurement charts. Other speakers look very good.
John

Just bought the MRX700 because I didn't want to spring for a separate amp right now. Maybe next year. Dealer upgraded the firmware to 50.04.

Still waiting in box waiting for setup. Hopefully will be a significant upgrade from the Marantz SR8002 I have been running for the past 2 years.

for those who are not sure about buying one all i can say is BUY IT i just received mine and holy SH*T is it amazing i previously had a pioneer elite sc37 and the anthem is the clear winner i could hear things in my signature s2 that i could not hear with the anthem ohh and i have not run ARC . The quality of the product is A plus in y opinion worth every penny it almost made me feel like i was robbing anthem because i havent seen such incredible quality in a long time , the pioneer is also build like a tank but the anthem wins in all categories . The on screen menu is beautiful sharp not like the sc37 that looks like my denon that i bought in 2004 . THANK YOU ANTHEM

Can anyone recommend an Anthem dealer in NYC or in NJ close enough to visit using public transportation from Manhattan? I went by Audio Video Center (133 Bowery) and wouldn't buy a disposable keychain flashlight there. All the other dealers listed seem to be custom installers which I can't visit.

I'm hoping someone has had a good Anthem experience in the area and could make a dealer recommendation before I just start cold calling...

My friend bought Paradigm speakers from these guys:

http://www.jandvaudio.com/index.html

they were good.

I have a Velodyine DD12 sub and B&W N804 floor stand speakers.

The DD12 has pretty hardcore parametric EQ with its own mic etc. The manual says to disable sub EQ but also says I could try using the sub EQ before the ARC eq.

I am asking because for users of Paradigm PBK (which is similar to Velo DD correction), they recommend doing ARC after PBK correction.

Which way do you guys recommend?

http://www.avsforum.com/avs-vb/showt...9#post19488739

After running ARC, you'll probably reach of new level of holy SH*T
John

I got mine from Guy at http://www.jsaudiovideo.com/

They are in Morris Plains, NJ right by the train station.

I have 2 paradigm subs that are can be equalized with the PBK software.
I had borrowed the pbk kit from a dealer no longer in business.

Can I run the pbk software using the mic supplied with the
arc kit I recvd with my new receiver?? I was thinking about copying the arc mic calb file into the pbk folder to replace the missing pbk mic. I did notice that the arc file is larger though.

what do you think?

I have twin DD-18s. I made my adjustments, to the EQ in my subs, based on what I was seeing in the charts from ARC. This is what I did. I took measurements from 5 LPs just for the fronts and the sub which took a little less than 10 minutes each time. After that, I looked at my sub chart, and I adjusted the EQ, in the sub, based on what the sub chart was showing me. For example, I had a 6db peak at 40 Hz, so I went into the EQ, and I cut 40 Hz by 6 db. After I made the adjustments, I ran ARC again to see what the sub chart look like after I made my adjustments. I kept doing this until I pretty much had a ruler flat raw measurement (red). Now, you can use Quick Measure to do this also; but, I just wanted to take measurements from the exact same places that I would be taking measurements from when I did the full blown real measurement. BTW, the sub chart didn't change once I did do the full measurement. Anyway, here is what my chart looks like.

http://www.avsforum.com/avs-vb/attac...4&d=1298334867

Not sure if that would work. I did hear that Paradigm had reduced the price for PBK to around $100 from I think, $299.
john

Interesting that while one measures higher at 8 ohms the other does so at 4 ohms as quoted. This might explain why so many people talk about how MRX drives their real world loads without quitting like whichever AVR was previously in the system. I had no problem playing material from Diana Krall to Yello and Motorhead loudly through Paradigm S8s using MRX 700 in full range fronts mode and no sub.

Can't. Same mic but different ID on the chip inside.

Generally speaking:

While it's great that there's a forum community to answer questions, sometimes answers provided here are incorrect so don't forget that http://www.anthemav.com/Contact-Technical-Support is always available.

That's correct. No change to ARC price as add-on for older AVPs.