John Curl's Blowtorch preamplifier part III

Status
Not open for further replies.
Dan, 01 vs. 02 is easy.

Code:
foo_abx 2.0.2 report
foobar2000 v1.3.7
2019-05-20 21:32:21

File A: 01 - Lana Del Rey - hope - ORIG 16bit.wav
SHA1: 9c2aee14884cf01b919f9ba65836b85ac45347de
File B: 02 - Lana Del Rey - hope - TS 16bit.wav
SHA1: 830c46a94e6e422a6f4008f4f6488ec7a92f25f1

Used DSPs:
Resampler (PPHS)

Output:
WASAPI (event) : Speakers (iConnectAudio4+ D1), 24-bit
Crossfading: NO

21:32:21 : Test started.
21:33:57 : 01/01
21:34:09 : 02/02
21:34:18 : 03/03
21:34:26 : 04/04
21:34:35 : 05/05
21:34:46 : 06/06
21:34:56 : 07/07
21:35:09 : 08/08
21:35:09 : Test finished.

 ---------- 
Total: 8/8
Probability that you were guessing: 0.4%

 -- signature -- 
53d8396cef1b782acda7354bab8eb5859eb2ef1a

I thought you wanted 01 24bit vs. 01 16 bit (though both are in fact 16 bit).
 
Source of that info can be seen where?

Does your sound reproduction system qualify as clean and or detailed enough? If so, what are they?
There is Benchmark DAC-3, and Benchmark AHB2 power amp.Speakers are Yamaha NS-10M with stereo sealed subs. All speakers on Primacoustic Recoil Stabilizers (which help with imaging and LF).
There is also a Neurochome HP-1 headphone amp, which may be even lower distortion than AHB2. Headphones include Sennheiser HD-600 and Audeze LCD-X. Not perfect equipment, but probably as accurate or more accurate than used to make many records.
 
Last edited:
There is Benchmark DAC-3, and Benchmark AHB2 power amp.
Speakers are Yamaha NS-10M with stereo sealed subs. All speakers on Primacoustic Recoil Stabilizers (which help with imaging and LF).
There is also a Neurochome HP-1 headphone amp, which may be even lower distortion than AHB2. Headphones include Sennheiser HD-600 and Audeze LCD-X. Not perfect equipment, but probably as accurate or more accurate than used to make many records.
I'll bet you would be happier with the sound quality if you rerouted most of budget for DAC and amp to speakers. I'm not saying your NS-10M are bad, it's just that there are many better speakers out there but they aren't cheap.

What about the room response? Have you measured it when integrating your subwoofers? If so, can we see it?

:nod: I heard them at Yamaha's own factory listening room.
Was it a long term listening? You know, the fatigue inducing experience touted by some audiophiles. :geezer:
 
Have you measured it when integrating your subwoofers?

Yes. Saved sub settings for my own use, but not the real-time FFT. Wasn't expecting to do show and tell.

I have considered other speakers, but hard to find something I would want that I could afford. I tend to prefer sealed speakers, want excellent transient response, and passive crossovers. Flat frequency response by itself is not enough. No powered speakers for me.
 
Last edited:
I have considered other speakers, but hard to find something I would want that I could afford. I tend to prefer sealed speakers, want excellent transient response, and passive crossovers. Flat frequency response by itself is not enough. No powered speakers for me.
For transient, horn loaded speakers like Klipschorn, La Scala, Cornwall, Heresy are some examples of what you should look into.
 
Dan, 01 vs. 02 is easy. Total: 8/8 Probability that you were guessing: 0.4%
Pavel, thankyou for your effort, you have taken a listen and you detect difference, as should be expected. Yes, all files so far are 16bit in 24bit container for purpose of ASIO loopback 24bit recording process which usually requires attenuation to avoid analog 'overs'.. I didn't bother to check but compressed format source files should show upper highs rolled off. The fact that the source files are 16bit does not spoil the party, 16bit is what most of us listen to most of the time.

So you have shown that your hearing and your system are good enough to differentiate a loopback recording using a 2003 era usb interface, perhaps you can describe in subjective terms the differences you note ?.

If you are keen we can progress to 02>03 and 02>04 differences. Remember this is not intended as test of any kind, it is intended to show how easily that treasured favourite recording can be altered subtly, but enough to change the 'character' of a performance. This is what cables and gear do, ie implant subtle changes that may subjectively 'improve' or 'deteriorate' programme signal.

Please suggest a 24bit recording that you enjoy.

Dan.
 
Good luck to anyone that can get anything musically useful in the average living room below 20 Hz.

8 Hz comes dangerously close to the brown note so that might all be for the better. However, it would be much easier to accomplish in a small room than a large one. Just drill a hole in a sealed enclosure that just fits your measuring microphone and look at what is going on in the inside.
 
Status
Not open for further replies.