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Ripping vinyl
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ICL1P View Drop Down
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Points: 2341 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ICL1P Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2021 at 6:16pm
+1 for VinylStudio and +1 for ask Bob.
Ifor
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Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair.
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Points: 3986 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lfc jon Quote  Post ReplyReply Direct Link To This Post Posted: 07 Nov 2021 at 6:32pm
Mike
This is what I was thinking (getting into a back hole) I'm not that good with computers. I had problems with ripping CDs (not now, I find it easy)
Audacity was what I was looking for. I think my best bet is to have a try and if it don't work out I haven't lost money as I got everything for nothing.
As you said Bob is the expert in these matters and if I have problems I can always PM him. (I just hope he don't get fed up with me) YES I am that bad with computers.
Reflex M, Solo (both with PSU-1) CuSat50, Lautus, Spatia & Spatia links cables. Ortofon Bronze.
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I just posted this reply to a private request, but thought I'd share it generally on the forum. It concerned the use of the flat setting on the Accession while using software that added the RIAA curve afterwards. I tried that as well using Pure Vinyl, but found the flat setting plus added RIAA didn't give me as good of results as simply leaving in the RIAA from the Accession and foregoing adding afterwards. So I don't use the flat setting. I found the best results in just using the output from the Accession, and not worrying about trying to add the curve in the digital domain. I have been totally impressed with the rips I get though the Accession into Pure Vinyl at 24/96.

What I love so much about the Accession, much, much more that the flat feature, is the second set of output jacks. So I just leave my ADC, an Apogee Duet for Mac and iPad, hooked up all the time and it's so quick to rip a record. No juggling of cables is so sweet. I leave the computer cable at the ready plugged into the Apogee and just plug it into my computer and in less than 10 seconds I'm off and running. And because of that second set of outputs, i can compare the phono to the rip while it's ripping. I can go back and forth while I'm recording by switching between Phono and Aux on my preamp. To my ears it's indistinguishable. This is possible because of those second set of outputs. 

This is such an unheralded feature of the Accession, but for me, it's one of its greatest attractions. It's the perfect setup for ripping vinyl. 
Kory

Hana ML, Zu/Denon 103 Mk. II, Ortofon 2M Black, Accession MM/Elevator EXP/PSU-1 Enigma/Lautus interconnects, Apogee Duet II, SOTA Nova, CJ 17LS2, Adcom 7805, VTL MB 300 Deluxe, Infinity IRS Beta
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BAK View Drop Down
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Points: 1744 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BAK Quote  Post ReplyReply Direct Link To This Post Posted: 22 Dec 2021 at 10:23pm

Medical electronics engineers design heart monitors to detect and amplify the small 1mV heart pulses. 

(Brainwaves picked up on an EEG are smaller, under 0.1mV.)

They found the pulses can be more accurate with less noise by pre-amplifying the tiny signal closest to the source. The pre-amplifier is built into the pickup wires attached to the patient. The pickup pre-amp is then connected to the ECG or EKG or heart monitor by a cable up to 10 foot long (about 3 meters).

Heart beat signals are EQ'd to a tight frequency bandwidth, only 1Hz to 100Hz or 10Hz to 10kHz for diagnostics... always less than 20 to 20k.

Only after pre-amplifying and EQ-ing at the source are the medical signals then digitized and processed further and/or recorded. 

Why do they do that?

Because the wanted signal is purest with less noise at the source where it is generated. 

(This was discovered for microphones to have a pre-amp built-in... about the same time medical did.)

It makes sense to pre-amplify all small voltage signals at the source... likewise it is best to EQ those signals in the first few amplifying stages to reduce noise and phase anomalies. 

Medical Grade electronics are some of the most critical designs, mostly with narrower frequency bandwidths than any high quality audio system.

Having myself designed and maintained most medical electronics, this process is the best to reproduce any small signals less than 0.5volts.


I agree with Kory in his post above about using “EQ at the source” is best.

Kory's words... "I don't use the flat setting. I found the best results in just using the output from the Accession, and not worrying about trying to add the curve in the digital domain." 

With digital recording, Kory likes the EQ provided by the Accession before A-to-D over the EQ done in the digital realm after A-to-D.

I'm a firm believer of EQ-ing in the digital realm should be done on signals that DO NOT have an “EQ at the source” available in the 1ststages of amplification.

Graham Slee's Revelation phono stage covers most EQ's needed for records as old as 1930's.

Graham Slee's Accession phono stage has EQ's for 33-1/3 LP's made since 1950s.


The following link has graphs and some history of many recording EQ's used:

https://www.hifisystemcomponents.com/about/reproducing-old-records.html




Edited by BAK - 22 Dec 2021 at 10:37pm
Bruce
AT-14SA, Pickering XV-15, Hana EL, Technics SL-1600MK2, Lautus, Majestic DAC, Technics SH-8055 spectrum analyzer, Eminence Beta8A custom cabs; Proprius & Reflex M or C, Enjoy Life your way!
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Kory View Drop Down
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Bruce,
It's always comforting to find out there is actual science that backs up what I thought I was hearing. It's like finding out I'm not crazy after all. Well, at least in one thing:)
Kory

Hana ML, Zu/Denon 103 Mk. II, Ortofon 2M Black, Accession MM/Elevator EXP/PSU-1 Enigma/Lautus interconnects, Apogee Duet II, SOTA Nova, CJ 17LS2, Adcom 7805, VTL MB 300 Deluxe, Infinity IRS Beta
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Points: 6017 		Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 23 Dec 2021 at 11:42am
Originally posted by Kory Kory wrote:

I just posted this reply to a private request, but thought I'd share it generally on the forum. It concerned the use of the flat setting on the Accession while using software that added the RIAA curve afterwards. I tried that as well using Pure Vinyl, but found the flat setting plus added RIAA didn't give me as good of results as simply leaving in the RIAA from the Accession and foregoing adding afterwards. So I don't use the flat setting. I found the best results in just using the output from the Accession, and not worrying about trying to add the curve in the digital domain. I have been totally impressed with the rips I get though the Accession into Pure Vinyl at 24/96.

What I love so much about the Accession, much, much more that the flat feature, is the second set of output jacks. So I just leave my ADC, an Apogee Duet for Mac and iPad, hooked up all the time and it's so quick to rip a record. No juggling of cables is so sweet. I leave the computer cable at the ready plugged into the Apogee and just plug it into my computer and in less than 10 seconds I'm off and running. And because of that second set of outputs, i can compare the phono to the rip while it's ripping. I can go back and forth while I'm recording by switching between Phono and Aux on my preamp. To my ears it's indistinguishable. This is possible because of those second set of outputs. 

This is such an unheralded feature of the Accession, but for me, it's one of its greatest attractions. It's the perfect setup for ripping vinyl. 
I couldn't agree more, Kory! Both about the quality of the Accession's EQ and the functionality of the second variable output. To be able to leave my PreSonus Studio 24c permanently connected makes life so much easier. 
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
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