Anthem Room Correction (ARC)

rklpoon

cherish 發表於 2012-3-22 23:21
Ching, 已試過將arc set 去 music 剩係由前置出聲, 可能我隻speaker係書架, flat 好似冇咩bass, 如set 80,  ...

正路,書架前置先天設計低音不足,加十仔聽歌或有幫助.另ARC auto set x/o 幾多?

cherish

Set 80.

grandetech

rklpoon 發表於 2012-3-23 12:14
正路,書架前置先天設計低音不足,加十仔聽歌或有幫助.另ARC auto set x/o 幾多? ...

rklpoon sir,

敢問閣下當初點解買MRX-700 而非 300, 我所知道的分別是MRX-700用環牛,300不是, noise suppose 小d.  其他internet radio, HD Radio, 我就無用,我估都唔係你買700原因.  小弟正考慮買300, 因為除了份電,揾唔到第二個原因比多一陪價錢,如有其他好嘢,請賜教.

rklpoon

grandetech 發表於 2012-5-8 19:29
rklpoon sir,

敢問閣下當初點解買MRX-700 而非 300, 我所知道的分別是MRX-700用環牛,300不是, noise sup ...

Ching, sorry have to reply in English, both my samsung nexus s and 8.9" tab cannot access to hiendy.com right now via home wifii  or 3g data -- strange thing as my pc hooked up with lan wire can.

First of all, I may be the very first batch of customers who bought the Anthem receiver in HK. I spoted it in the AVS forum sometimes before it launched and found it in a local av magazine. At that time (1/2011) the MRX300 was not available, so my choice was limited to 700 Vs 500 ($16K Vs $12K).

I copy some of my posts below (also in English, not owned any smartphone at that time ) for your information from the main MRX post : http://www.hiendy.com/hififorum/ ... orid=324&page=1

(A)
Major difference between MRX700 and MRX500: -
1) Price difference of $4,000.
2) Power output:-
MRX700: 2 channels at 120W 5 channels at 90W )
MRX500: 2 channels at 90W, 5 channels at 75W )--- not sure what this mean when driving 7 channel for movie.
3) MRX700 - toriodial transformer, MRX500 - EI transformer
4) MRX700 has HD Radio (not sure if it can play in HK, also I don't think I'll use it a lot, internet radio has more sources).


(B)
Went to Excel MK today(Saturday 8/1), YES AGAIN with randyma. Purpose is to compare the MRX500 and MRX700. If 500 is not losing too much to 700, then I could save $4K.  AND THE ANSWER IS .......

As pointed out before, difference is toroidal transformer, HD Radio and 15 to 20 W more power (5 channel/2channel). There was a 3-seat couch and I was sitting at the extra chair next to the leftmost position of it. The strange thing is that I was able to hear more surround sound/effect this time - the effect sound passing from say, surround left to right/front left to right than last time. We used the Kung Fu Panda - jail break scene for comparision. As said before, I can not differentiate much between good and better but able to tell the poor(wooden ears ), the 700 is sure a winner. Power output set aside, the 500 (later found out that no ARC has been performed but another saleman said has done ARC)lacks authority, punch, surround effect even the volume is turned up. I was sold on the 700 and would surrender $4K more if I were to buy Anthem. Randyma cares to supplement pls?

p.s.- I was of the opinion even the 500 has not done proper ARC, the 700 won implies that:-

1) either the ARC is very good,
2) or if both units have done proper ARC then no doubt the 700 won.


As you can see from the above, I finally chose 700 over 500 because 700 won 500 in a side by side comparison. As now the MRX300 is available, I competely agree that buying the 300 + power amp would be a better choice over the 700 alone(pre-amps are changing all the time, 3D,4k, whereas power amp on the other hand does not change much). I now use the MRX700 to drive 4x Klipsch RS-42 surround speakers.

Hope this can help you to make an informed decision, please report back in due course.

rklpoon

而家部手机/tab又正常番,吹脤.

grandetech

p.s.- I was of the opinion even the 500 has not done proper ARC, the 700 won implies that:-

1) either the ARC is very good,
2) or if both units have done proper ARC then no doubt the 700 won.


Thanks for the reply.
I am a bit confused about your conclusion, I may agree point 1, but how would you come up with point 2 given 500 had not done ARC, I would say no one can tell if 700 can win over it, unless you are saying ARC is insignificant at all.

Correct me if I am wrong please.  Thanks.

rklpoon

grandetech 發表於 2012-5-8 22:51
p.s.- I was of the opinion even the 500 has not done proper ARC, the 700 won implies that:-

1) eith ...

Yes, you are right. I might be a bit sentimental in favouring the 700.  Now that 300,500,700 are all available, I think 500 is not a good choice(you can see chings are either buying 300 or 700) because it is in the middle of the series and might not have a good c/p value. Buy 700 to drive all you speakers if they are not power-hungry or buy 300 and add power amp.

grandetech

I do have 7 channel poweramp ready, thanks for the advice in such detail, its very helpful.

I also shortlist with Cary 11/12, your comment would be very much appreciated if you had experience on Cary.

rklpoon

grandetech 發表於 2012-5-9 00:15
I do have 7 channel poweramp ready, thanks for the advice in such detail, its very helpful.

I also  ...

Cary 11/12 shoud win MRX700 but the price of 11/12 is more than double hence not a fair comparison. A better one would be 11/12 Vs Anthem AVM50.  As you have got a 7 channel power amp, it is better to get the 300,or take the 11/12/AVM50 or even d2v( or even consider the new Mac ) to match your gears. Go try them and see which one best suits your taste. BTW,Anthem brand has less "user eq trimming stuff" than other brands, I think. Happy hunting.

grandetech

I keep studying on how to improve my calibrated charts especially on SUBWOOFER (see the pict), I am not happy with how it looks at all.  AVSforum mentioned we should aim for the auto calibration result for a 120hz cutoff for SUB, if you can't achieve this, you better move your sub location, otherwise you will miss some very good punch.  I am planning to do that, painfully.

不是set個crossover to 120hz啊，記住！

grandetech

A good SUB chart should look like this:

rklpoon

grandetech 發表於 2012-6-2 03:58
I keep studying on how to improve my calibrated charts especially on SUBWOOFER (see the pict), I am ...

Very impressive, your sub curve looks already very nice to me. May I ask which subWoofer are you using and the spec(frequency response)? Which part of your sub you think needs improvement-  puch, atmosphere,surrounding-feel or lower frequency extension? Sure moving your sub position might be helpful to locate the best position using Quick Measure.  I tried it once before but maybe there was little space for my sub to move around I did not see much change in the charts. Please report back/share findings/results in due course,3q.

grandetech

Its a VELODYNE DD15, I posted in 同好會 as well.   puch, atmosphere,surrounding-feel or lower frequency extension all seems well, but if you look at the SUB chart, it rolls off after 50hz and severely dip at 120hz, therefore ARC set it to 80hz for me, which is not ideal.  I guess I can get more punch if the chart be flat till 100hz and cutoff being assigned to 120hz, the bass will blend more into the main speakers.

rklpoon

grandetech 發表於 2012-6-2 18:43
Its a VELODYNE DD15, I posted in 同好會 as well.   puch, atmosphere,surrounding-feel or lower freque ...

I think someone in AVS forum once mentioned(not sure about that ) that it is actually "roll-off" and not "cut-off"

grandetech

rklpoon 發表於 2012-6-3 01:33
I think someone in AVS forum once mentioned(not sure about that ) that it is actually "ro ...

唔明。。。

rklpoon

grandetech 發表於 2012-6-3 01:38
唔明。。。

ARC sets at 80hz -->roll-off only, which  means starts to decrease  sound level pressure gradually whereas cut-off means complete no output below/above (as the case may be) that specific frequency.

rayzine

Very informative!!!!   THANKS!!!!

rklpoon

rayzine 發表於 2012-6-5 08:48
Very informative!!!!   THANKS!!!!

師兄用緊Anthem MRX Receiver?

rayzine

rklpoon 發表於 2012-6-6 13:41
師兄用緊Anthem MRX Receiver?

Not yet... Want to change my old yamaha (no HD audio) to Anthem RMX300.

I heard you guys said "做ARC之前一定要拉尺先", is that the ARC will not measure the distance?  THANKS.

Also is brother Joe is @ MK store?    If want to hear a demo, am I need to contact Joe in advance?

rklpoon

喇叭距離係要自己輸入既.
Joe應該係MK,電話約booking好處係預留時段比你試.