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I'll answer for him, because he's right in what he's saying. You base your hardware buying decisions and system tweaking around trying to reproduce everything that's actually within the recording. You're not gonna suddenly start to invest in systems that cut off at 40Hz just because there's a few recordings that have actual real 30Hz content that some people find doesn't add to the recording (like ventilation noise at a live recorded venue for instance). Although I agree with you earlier that it seems this phono stage has it right with it starting to roll off from 30Hz, because that's the limitation of vinyl tech according to the experts here, so that's all good. Hi-fi is about recreating everything that's within the recording.
Or when it is sufficiently distant from the excitation frequencies, which are different later and vertical. You can have a high vertical resonant frequency e.g. 20 Hz (main excitation fr 3-7 Hz) and low horizontal one e.g. 5 Hz (main excitation are 0.55-1.1 Hz).
View attachment 305527 @JayGilb looks like it's the JRS NJM5532DD (edit: sorry just saw your edit with image, but yours shows 5532D not 5532DD?) Quite decent results for this phono pre @amirm (cheers), but certainly up there price wise too.
Have you ever considered that such thing can be actually benificial for some recordings? For example, it can create a sense of weight, bring fullness, etc. and it's a mixing engineer, who decides whether to cut or leave it
Purpose of hi-fi audio is faithful reproduction of music (and vocals),not faithful reproduction of fan noise (and other unwanted noises) - which should not be in the recording, in the first place.
They could have used a filter on any number of Stevie Ray Vaughn recordings where his amp hum very audible, but they did not because it was part of his performance.
New Rules for Review Threads Reviews of audio products are the crown jewels of our forum. In cooperation with kind members and companies that send in gear, and collective wisdom of the contributing members, we have created an incredible asset for audiophiles. As we cover nearly one new audio...
Probably, nonsense is attempting to filter unwanted noise during the playback not during mastering.
During the playback it only makes sense to filter what cannot be properly reproduced by specific equipment, and even then, as far as vinyl is concerned, most of the filtering should be and is done during mastering for that specific medium.
They could have used a filter on any number of Stevie Ray Vaughn recordings where his amp hum very audible, but they did not because it was part of his performance.
I don't agree that the purpose of the filter is to eliminate unwanted sounds. I believe that is up to the sound engineer and artist (if so desired).
The filter is necessary because of the constraint of the record's groove, and it's ability to reproduce sounds from lowest to highest frequencies. The lower the frequency, the wider the groove needs to be, but doing so buries the higher frequencies in the noise floor.
The equalization filter's goal is to increase what is available. Doesn't matter what that is. Ambient noise or intended noise.
The filter's goal is to allow the low frequencies to be attenuated while the higher frequencies are increased, allowing the overall recording to be made at a higher level based on the mid-level frequencies. Bass get's increased and treble decreased. Everything fits in the groove.
Early 78's were limited because they were carved directly into lacquer.
“Notice the total absence of distortion as it should be. I don't have a ranking table to show you for SINAD but typical values are in 60 dB range so this is quite good.”
that’s the one from the Cambridge Audio Duo review
I am asserting that something as simple as LP filter will most likely not be able to selectively filter out fan noise without affecting useful information that may be in that same frequency range.
If I find mastering mistakes that affect my listening, I will try to correct them using appropriate tools, not rely on some simple filtering.
I am also not sure why you are so focused on “fan noise” as if it was something with important significance in *all recordings. On the other hand, 16Hz tone in organ music is very real.
This is a review and detailed measurements of the Schiit Mani 2 phono preamplifier. It was sent to me by the company and costs US $149. Naturally the unit looks like other Schiit products and seems to even have the previous Mani skin given the lack of "2" designation in the front. Fortunately...
New Rules for Review Threads Reviews of audio products are the crown jewels of our forum. In cooperation with kind members and companies that send in gear, and collective wisdom of the contributing members, we have created an incredible asset for audiophiles. As we cover nearly one new audio...
As perfectly pointed out by @JSmith this is an Official Review Thread. Please keep your posts rooted in the product reviewed and/or the test bench results.
A dozen or more posts deleted and warnings issued with a perm thread Ban tossed in for good measure. If you can’t contain yourself we will be happy to give you a helping hand. Please do try to remain focused on the topic of this thread.
This is a review and detailed measurements of the Schiit Mani 2 phono preamplifier. It was sent to me by the company and costs US $149. Naturally the unit looks like other Schiit products and seems to even have the previous Mani skin given the lack of "2" designation in the front. Fortunately...
It is an apple to orange comparison. The Mani 2 was tested as an MM phone stage, while the MC Pro was tested as an MC phono stage. Note the differences in the inputs (5mV vs 0.5 mV) and gains (44 dB vs 68 dB).
“Notice the total absence of distortion as it should be. I don't have a ranking table to show you for SINAD but typical values are in 60 dB range so this is quite good.”
that’s the one from the Cambridge Audio Duo review
Careful: That ranking is for MM stages or combo devices measured in MM mode (at 5 mV input). The stage under discussion in this thread is an MC stage tested at 0.5 mV input.
Hehe - With the amount of distortion and noise relative to the signal inevitable *in the grooves and mechanical part of the playback device,* I'd say 'sinad' is quite appropriate a term to use
It is an apple to orange comparison. The Mani 2 was tested as an MM phone stage, while the MC Pro was tested as an MC phono stage. Note the differences in the inputs (5mV vs 0.5 mV) and gains (44 dB vs 68 dB).
