1 (edited by itseoost 2022-07-25 03:28:19)

Topic: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Would you please share with me your favorite PEQ settings for the SENNHEISER 650HD?

Which PEQ settings do YOU consider as "most neutral" considering the typical (minor?) flaws in the soundcurve of this headphone model.

I would like to try your preferred settings which might be helpful to tweak the sound of my SENNHEISER 650HD

Looking forward to your expert opinion!

Thanks

Itse

The Netherlands

2 (edited by whitenoiz83 2022-07-24 09:59:03)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Hi itseoost,

take a look here:
https://www.reddit.com/r/oratory1990/wi … rme_adi-2/

You could use that as an orientation and then adjust the EQ to your taste. :-)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

I use this settings, taken from the ASR site:


https://www.audiosciencereview.com/forum/index.php?attachments/sennheiser-hd650-equalization-png.101567/

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Thank you both @whitenoiz83 and @fisico for your very helpful suggestions. However, for reasons of convenience I will start implementing the suggested settings in @fisico's reply!!

5 (edited by KaiS 2022-07-25 07:41:04)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

My favorite setting, by own measurement and ear:

Sennheiser HD 650
Gain:  F:   Q:  Shape:       
+7,0   39    0,6    Shelf   
-1,5    2,0k    1,3   
-2,0    6,5k    2,0   
+5,0    6,1k    0,6    Shelf

6

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Quite the difference...

https://archiv.rme-audio.de/images/Oratory_HD650.png
https://archiv.rme-audio.de/images/KaiS_HD650.png

Regards
Matthias Carstens
RME

7 (edited by itseoost 2022-07-26 17:34:47)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Olala, this thread is becoming pretty interesting! @Kai & @Matthias, thank you so much for your contributions. Very helpfull and I will definitaly test these different settings. It becomes challenging to get the right settings to my taste. I've noticed myself several times a very disturbing sound peak just above 1 Khz. May be this is due to my specific headphone.

@Fisico referred to PEQ settings provided by Audio Science Review. Please find the link to the Review of the SENNHEISER 650 HD by Amir Majidimehr of ASR, to put Amir's  recommended PEQ settings in the context of his review.

https://www.audiosciencereview.com/foru … one.18774/

8 (edited by KaiS 2022-07-25 15:58:43)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Not much to criticize on the Sennheiser HD-650 from my side.
I can confirm it’s reference status for tonallity.


Mainly there’s bit of lack in the sub and brilliance department.

The 2 kHz correction already might be a personal thing, albeit some minor over-presence is criticized by others here and there too.
Even depends on your listening level behavior, I don”t use loud levels normally.
I have the vocals in a song slightly above normal human’s talking level.


The good things:

• HD-650 can take quite some EQ without negative side-effects.
EQ can lift it‘s quality some notches up the ladder of quality, making HD-650 a strong contender against much more expensive ‘phones.

• With ADI-2 it‘s easy to store and compare different EQ Presets to find a personal optimum.

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

@Kai thank you for your additional explanations. Very relevant and substantial!!

10 (edited by MstrC-117 2022-07-25 19:50:36)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

MC wrote:

Quite the difference...

https://archiv.rme-audio.de/images/Oratory_HD650.png
https://archiv.rme-audio.de/images/KaiS_HD650.png


I have been in belief (on FPGA 259, DSP 111 -firmware), that ADI-2 Pro´s EQ scales its analog output peak levels according user set maximum emphasis -level to 0 dBFS level. I.e. if user has set EQ of PH 3/4 to +10 dB emphasis, say @ 50 Hz, and turned volume to 0 dB(r), THAT 50 Hz area of the output passband is that +10 dB -peak part of the "graph", which volume indicates to tickle that 0 dBFS maximum at PH 3/4. And the rest of the output "graph" stays <10 dB lower.

So in hardest case scenario (0 dBFS signal in from AD/DA), ADI´s PH 3/4 could be OVR:ed only  >0 dB(r) -volume settings (+2.5 on Main Out 1/2). Below 0 dB(r) volume setting it could not be OVR:ed from output side in any circumstances.

So what part I haven´t understand, doesn´t it nevertheless work that way? How is that possible in your picture to get PH 3/4 to OVR @ -10 dB(r) volume setting on "KaiS HD650" -EQs? Is there differences in firmware versions how EQ and volume behave regarding analog output levels? I don´t say this aloud but could active loudness -function cause that... ?

Last winter I had those mysterious, still unsolved, clipping problems on other firmwares than 259/111, if you remember (propably don´t). Clipping occurred suspiciously pretty EQ -boost amount much earlier than with 259/111 (meters didn´t show OVR). Final consensus here was I was fucking things up myself, overloading analog input and/or my headphones or using crap level external gear with blasphemy (headphone output of AVR). Which wasn´t the case. I gave up since then though, and been just using 259/111.

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

Unfortunately I can't comment on the contribution of @MstrC-117. As a pensionado, plain music lover, economist, leisure activist and après-ski teacher big_smile I lack the knowledge to adequately comment on his reply.

Possibly someone far more knowledgeable than me, is able to comment?

12 (edited by KaiS 2022-07-25 21:57:05)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

The picture is perfectly pixel-aligned and color-correct.

Therefore I assume what you see must be a simulator, not a photo of the real thing.
So discussing this might be fruitless.


Just a reminder:
1. ADI-2 has 24 dB internal headroom for processings like EQ-boost.
The Volume control fits this back to the DAC’s working range.

2. The headphones out’s meters have a mechanism to detect real load dependent overs of the analog amp, and automatically adjust their 0 dB reading to this value once a single analog overdrive event occurs.

13

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

MstrC-117 wrote:

How is that possible in your picture to get PH 3/4 to OVR @ -10 dB(r) volume setting on "KaiS HD650" -EQs?

This is a software simulator for producing screenshots, with a random level meter display (disco lights...).

Regards
Matthias Carstens
RME

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

KaiS wrote:

My favorite setting, by own measurement and ear:

Sennheiser HD 650
Gain:  F:   Q:  Shape:       
+7,0   39    0,6    Shelf   
-1,5    2,0k    1,3   
-2,0    6,5k    2,0   
+5,0    6,1k    0,6    Shelf

Unfortunately I'm not able to find the "Shape" setting(s). I succeeded to implement all other settings which you're using. I'm a noob in this field. Would you bring me in the right direction? Sorry for the inconvenience. The latest firmware has been installed in my ADI-2 Pro AE unit.

Thank you for your support!!

15 (edited by KaiS 2022-07-26 20:44:46)

Re: ADI-2 PRO: Please share your preferred PEQ settings for SENNHEISER 650

itseoost wrote:
KaiS wrote:

My favorite setting, by own measurement and ear:

Sennheiser HD 650
Gain:  F:   Q:  Shape:       
+7,0   39    0,6    Shelf   
-1,5    2,0k    1,3   
-2,0    6,5k    2,0   
+5,0    6,1k    0,6    Shelf

Unfortunately I'm not able to find the "Shape" setting(s). ..

In EQ Bands parameter settings menu press Encoder 2 to activate the Shelf / Peak / High or Low Pass selection.
It’s only available in Band 1 (B1) and 5 (B5), not in Bass Band (BB) or Treble Band (BT).