Velodyne Digital Drive SMS-1(Report on P.5 & Curve on P.10)

[lawli99]

I found volume 25 is too small, then I increased it to 47 now.

[Rookie]

I found volume 25 is too small, then I increased it to 47 now.

I see.

Well, it seems that the EQ cut the freq about 40. That seems strange. And, I think that may be you can try set the Low Pass Xover Freq to value 199 or just set it off. Then, try run the Auto EQ on system setting page.

[lawli99]

Thanks Rookie. What's your Auto Tune Graph like? and can you share with me your setup page?

thanks!!

[Rookie]

Thanks Rookie. What's your Auto Tune Graph like? and can you share with me your setup page?

thanks!!

I will try to see if I can post the graph tonight. If not, come back to check on tomorrow la.

[Rookie]

Below are the SYSTEM SETTINGS & SYSTEM RESPONSE pages of my SMS-1.

On SYSTEM SETTINGS page, the LOW PASS XOVER FREQ & LOW PASS XOVER SLOPE are set to "OFF". It is because the owner's manual advise user to use either the crossover inside the AV Processor or the SMS-1. Thus, I choose to turn of the crossover inside my SMS-1 and let the MC-12B to use its internal crossover.

The curve on SYSTEM RESPONSE page is generated by using Auto EQ function. It is not optimal. Probably due to:

1. Poor room acoustics.
2. Poor subwoofer and speakers placement
3. The Auto EQ software is not sophisticated enough to make further fine adjustment in flattening valleys and peaks on the curve.
4. It seems that M&K MX-350 THX is weak in generating frequencies below 18 Hz to above 70 DB.

[chowchow]

[Raymond Wan]

Rookie hing

After searching for a while, I will highly likely to purchase and upgrade my AV Processor and Speakers as follow:

(1) M&K MPS 2510P Powered Front Left & Right
(2) M&K MPS 2510P Powered Centre
(3) M&K MPS 2525 Passive Surround
(4) Lexicon MC-12B EQ Digital Processor



However, since the Lexicon MC-12B already have EQ and/or bass management functions, I wonder whether I need to purchase the Velodyne SMS-1 ?

After doing some studies for Bass Management, I still uncertain whether I need to purchase the M&K LFE5 Bass Management Controller. It seems this not just a simple crossover filter equipment but with improved performance on bass management.
http://www.mkprofessional.com/bass_mgmt.htm

Relevant Literature on Bass Management:
http://www.ultimateavmag.com/howto/805bass/

http://www.hometheatermag.com/bootcamp/101/



Any Advice ??

[lawli99]

thanks Rookie hing, I will try this again later.....

[Rookie]

Rookie hing

After searching for a while, I will highly likely to purchase and upgrade my AV Processor and Speakers as follow:

(1) M&K MPS 2510P Powered Front Left & Right
(2) M&K MPS 2510P Powered Centre
(3) M&K MPS 2525 Passive Surround
(4) Lexicon MC-12B EQ Digital Processor



However, since the Lexicon MC-12B already have EQ and/or bass management functions, I wonder whether I need to purchase the Velodyne SMS-1 ?

After doing some studies for Bass Management, I still uncertain whether I need to purchase the M&K LFE5 Bass Management Controller. It seems this not just a simple crossover filter equipment but with improved performance on bass management.
http://www.mkprofessional.com/bass_mgmt.htm

Relevant Literature on Bass Management:
http://www.ultimateavmag.com/howto/805bass/

http://www.hometheatermag.com/bootcamp/101/



Any Advice ??

Raymond,

I am not quite sure how good is the M&K LFE5. At this moment I think that you should just start with MC-12B V5 EQ first.

Once you fully understood what MC-12B can do and its performance, you may then have a better idea on whether you need M&K LFE5 to enhance the bass performace or not.

[Raymond Wan]

Rookie hing

After searching for a while, I will highly likely to purchase and upgrade my AV Processor and Speakers as follow:

(1) M&K MPS 2510P Powered Front Left & Right
(2) M&K MPS 2510P Powered Centre
(3) M&K MPS 2525 Passive Surround
(4) Lexicon MC-12B EQ Digital Processor



However, since the Lexicon MC-12B already have EQ and/or bass management functions, I wonder whether I need to purchase the Velodyne SMS-1 ?

After doing some studies for Bass Management, I still uncertain whether I need to purchase the M&K LFE5 Bass Management Controller. It seems this not just a simple crossover filter equipment but with improved performance on bass management.
http://www.mkprofessional.com/bass_mgmt.htm

Relevant Literature on Bass Management:
http://www.ultimateavmag.com/howto/805bass/

http://www.hometheatermag.com/bootcamp/101/



Any Advice ??

Raymond,

I am not quite sure how good is the M&K LFE5. At this moment I think that you should just start with MC-12B V5 EQ first.

Once you fully understood what MC-12B can do and its performance, you may then have a better idea on whether you need M&K LFE5 to enhance the bass performace or not.

Thank you for your advice ! I will go for MC-12B EQ first and see possible upgrade for others. I believe my coming setup on AV multi-channels will be quite similar (as little brother) to yours with Lexicon & Full Set M&K S150. If you have completed the fine tunning of your system and arrange for a home visit. Please be sure to count me in so that I can appreciate the expected outcome from a normal home set up before purchasing.

As you know, I need to plan and estimate the total budget and potential extra for an important upgrade. I have to allocate sufficient amount otherwise it may be a waste of effort ending up in half way.



Have a read on the recent publication from a famous Taiwan Magazine Prime AV on commenting the performance of M&K LFE5 - Best Performance.

What is your comments and views ?



In fact, I have listened to full set S150 and S150PK systems at M&K Shanghai showroom with this bass management connected. The outcome very good.

[Raymond Wan]

More Comments on M&K LFE5 Usage & Features:



M&K的低頻管理系統不僅僅是在處理播放SACD或DVD-A所面臨到的問題,也處理了空間效應影響聲音還原以及系統調整方面的問題!!

喇叭的低頻經常因為喇叭的擺設位置或是空間效應等等因素容易受到影響,因而改變了低頻的響應曲線,能量輸出,或是相位......等等!!

在重播SACD軟體時,如果以SACD的要求以兩個或多個全音域的揚聲器(兩聲道或多聲道),擺設在不同的位置組成兩聲道或多聲道系統,
除非喇叭是放置在設計"精良"不會干擾低頻的專業錄音室或視聽空間,否則偵測多個全音域喇叭時將會測得多個不同的低頻參數,
各個喇叭之間除了與空間產生相互的影響之外,喇叭之間所還原出來不同的低頻參數也會相互影響,對於聲音的還原又增加了更多的變數!!

M&K所設計的低頻管理器以ANALOG的方式將所有聲道包括前.中.後.環繞的低頻(較低的頻率)導入到超低音喇叭來進行低頻的還原,
這樣看似簡單但卻解決了多個全音域喇叭複雜低頻參數的手法相當的高明!!
此時進行超低音適當的擺位/調整,所有聲道的低頻將獲得一致的控制/調整!!

將SACD融入衛星式喇叭設計的概念另一方面也處理在播放SACD/DVD-A時需使用PLAYER的類比解碼輸出之後產生分頻上的問題!!
如果您是SACD的用戶強烈的建議您試試加入低頻管理的工作方式,控制複雜變化的低頻參數,進行系統的調整!
這將會帶來意想不到的效果!

另外如果用戶是使用全音域喇叭(不論是大型喇叭或是小型喇叭),外加超低音來組成兩/多聲道系統還原兩聲道音樂,多聲道音樂或是電影音效,
也會造成多組不同低頻參數,造成低頻能量輸出,響應曲線不一致,低頻相互抵銷或增強.....等等的問題!!

M&K所運用的類比電子分音概念加上高斜率的分頻裝置,不同於數位擴大機的分頻方式,
大幅的降低聲音訊息經由數位處理或經過A/D轉換之後的損失,
也將使用低頻管理的系統變成衛星式的系統,讓喇叭(中高頻)以及超低音(低頻以及超低頻)的調整工作能夠分開來執行
而不再是"牽一髮動全身"高難度的調整!!
不論是播放CD/DVD/SACD/DVD-A都能夠以此低頻管理的方式,化繁為簡,使得複雜的低頻參數受到統一的控制,解決調整方面的問題!!

這樣的概念更進一步的延伸,當訊源訊號經過低頻管理氣處理之後,擴大機以及喇叭所要工作的頻段範圍縮小了,
相對的也減低擴大機與喇叭的工作負擔;另外一個部分在於擴大機與喇叭所要工作的範圍確定不需要延伸到低頻時,
對於擴大機/訊號線/喇叭線的選擇搭配,可以針對其需要負責的頻段作選擇適當!!

如果您也跟我一樣是"雜食性"聆聽動物,CD/DVD/SACD/DVD-A ,兩聲道/多聲道電影或音樂都不放過,我更強烈的推薦M&K低頻管理系統,
透由M&K的低頻管理器,簡化系統複雜的低頻參數,增進系統調整的寬廣性,重新安排擴大機甚至線材方面的預算結構,
進而提升系統整體的聲音效能表現!發揮更高的C/P值!

[Rookie]

Rookie hing

After searching for a while, I will highly likely to purchase and upgrade my AV Processor and Speakers as follow:

(1) M&K MPS 2510P Powered Front Left & Right
(2) M&K MPS 2510P Powered Centre
(3) M&K MPS 2525 Passive Surround
(4) Lexicon MC-12B EQ Digital Processor



However, since the Lexicon MC-12B already have EQ and/or bass management functions, I wonder whether I need to purchase the Velodyne SMS-1 ?

After doing some studies for Bass Management, I still uncertain whether I need to purchase the M&K LFE5 Bass Management Controller. It seems this not just a simple crossover filter equipment but with improved performance on bass management.
http://www.mkprofessional.com/bass_mgmt.htm

Relevant Literature on Bass Management:
http://www.ultimateavmag.com/howto/805bass/

http://www.hometheatermag.com/bootcamp/101/



Any Advice ??

Raymond,

I am not quite sure how good is the M&K LFE5. At this moment I think that you should just start with MC-12B V5 EQ first.

Once you fully understood what MC-12B can do and its performance, you may then have a better idea on whether you need M&K LFE5 to enhance the bass performace or not.

Thank you for your advice ! I will go for MC-12B EQ first and see possible upgrade for others. I believe my coming setup on AV multi-channels will be quite similar (as little brother) to yours with Lexicon & Full Set M&K S150. If you have completed the fine tunning of your system and arrange for a home visit. Please be sure to count me in so that I can appreciate the expected outcome from a normal home set up before purchasing.

As you know, I need to plan and estimate the total budget and potential extra for an important upgrade. I have to allocate sufficient amount otherwise it may be a waste of effort ending up in half way.



Have a read on the recent publication from a famous Taiwan Magazine Prime AV on commenting the performance of M&K LFE5 - Best Performance.

What is your comments and views ?



In fact, I have listened to full set S150 and S150PK systems at M&K Shanghai showroom with this bass management connected. The outcome very good.

Raymond,

According the the article about M&K LFE5, my point of view is that no matter how good the comment is, the most important thing is the actual listening experience.

And, I am glad to know that you already did listen to a full M&K setup with the LFE5 in Shanghai.

Since I am still waiting for my TAOC to arrive and also have to shop for speaker cable in order to re-wiring my entire AV system, the home visit probably won't be ready until after mid-July.

If you have time before this, I think that you should go visiting Sound Concept and test listening the MC-12B there first. It is a very important thing to do because you can at least learn how the MC-12B with EQ can perform.

Once you get the MC-12B home, I would suggest you to spend adequate time to fine tuning the parameters for optimal performance either by yourself or with us. Then, figure out whether LFE5 is still necessary or not. Even if you think that you need LFE5 at that time, it won't be too late to do so, right?

[Raymond Wan]

Raymond,

According the the article about M&K LFE5, my point of view is that no matter how good the comment is, the most important thing is the actual listening experience.

And, I am glad to know that you already did listen to a full M&K setup with the LFE5 in Shanghai.

Since I am still waiting for my TAOC to arrive and also have to shop for speaker cable in order to re-wiring my entire AV system, the home visit probably won't be ready until after mid-July.

If you have time before this, I think that you should go visiting Sound Concept and test listening the MC-12B there first. It is a very important thing to do because you can at least learn how the MC-12B with EQ can perform.

Once you get the MC-12B home, I would suggest you to spend adequate time to fine tuning the parameters for optimal performance either by yourself or with us. Then, figure out whether LFE5 is still necessary or not. Even if you think that you need LFE5 at that time, it won't be too late to do so, right?

I get all your points and thanks for the input with extremely constructive advice so far.

Highly appreciate your time and patient in answering my ignorance questions.

[Rookie]

Raymond,

According the the article about M&K LFE5, my point of view is that no matter how good the comment is, the most important thing is the actual listening experience.

And, I am glad to know that you already did listen to a full M&K setup with the LFE5 in Shanghai.

Since I am still waiting for my TAOC to arrive and also have to shop for speaker cable in order to re-wiring my entire AV system, the home visit probably won't be ready until after mid-July.

If you have time before this, I think that you should go visiting Sound Concept and test listening the MC-12B there first. It is a very important thing to do because you can at least learn how the MC-12B with EQ can perform.

Once you get the MC-12B home, I would suggest you to spend adequate time to fine tuning the parameters for optimal performance either by yourself or with us. Then, figure out whether LFE5 is still necessary or not. Even if you think that you need LFE5 at that time, it won't be too late to do so, right?

I get all your points and thanks for the input with extremely constructive advice so far.

Highly appreciate your time and patient in answering my ignorance questions.

You are very welcome!

In fact, I just share my point of views based on my limited knowledge and tiny amount of experience. My opinions or comments may not be correct.

We all just learn things through sharing.

[Rookie]

Just spent a little bit time to play with the Parametric EQ inside the SMS-1 tonight. It is so interesting!

Below are the revised SYSTEM SETTINGS & SYSTEM RESPONSE.

Special notes:
1. The volume of Preset 5 is changed from 20 to 25.
2. The Q values for all frequency remains default.
3. The output level below 20Hz can be boost for an additional 6 db. However, I have only boosted frequency at 15Hz up by 3 db only because boosting it up further may be too risky for the subwoofer. I believe that frequency below 20Hz can be improved a little bit further with subwoofer relocation. And, this will be verified very soon.