well, he's not quite knowledgeable about his sources, he references an Amperex tape machine for tone and texture (high 3rd order distortion). Now I have worked on a large number of tape machines, but never an Amperex, never even heard of one.
Cheers
Alan
I have found a stash of new RCA Nuvistors. 8393, 6DS4/6CW4, 7586.
One of the 8393 has label (selected part) of TEK 157-0108-00.
used in test equipment and some FM tuners. Looking for a home for them.
Throwing out all sorts of things taking up space that I will never use. But these are rare and NOS.
THx-RNMarsh
One of the 8393 has label (selected part) of TEK 157-0108-00.
used in test equipment and some FM tuners. Looking for a home for them.
Throwing out all sorts of things taking up space that I will never use. But these are rare and NOS.
THx-RNMarsh
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The tube amp and the instrument amp sub-forums could be likely places to find users of such things.
You can't cuz the payload format is Juliet. There is no file system on a red book cd and hence, no "file" hecksum. The payload itself is coded (rsc) to support error detection/correction but the "user" have to check for errors.
//
Richard, do you have 8056, I would need some.
If not 7586 would be good enough.
Thx, Damir
The things that immediately leapt out for me were
1. Pretty sure it wont have a fancy front end so having 76dB of gain variation would suggest some significant compromises there, even taking into account you have DSP which could do some of the gain.
2. The MM loading is fixed, and they claim that you can correct for any mismatch with a simple shelving function in DSP
3. whilst eq is very useful, having a load of menus to go through to adjust something doesn't make them usable (and yes miniDSP suffers the same
4. No computer link/phone app so you can remotely adjust things.
The idea is sound but to me the usability is too poor and the MM stage appears lacking (but then again most are). But a step in the right direction.
1 jpg = 1000 ASCII 😉
EAC comes preloaded with a flac coder, but if you didn't set it during the installation, you just have to point the compressor option to the flac folder (As Howie pointed out): under EAC tab, compression options, click browse, there is a flac folder in the EAC directory:
When installing:
Installation
Step 1: Download and install Exact Audio Copy, which includes the FLAC codec. You'll need to have an audio CD in your optical drive in order for EAC to configure the drive for use.
Step 2: When you get to the components to install, make sure that FLAC is checked.
Choose to install FLAC
Step 3: At the encoder selection section, change the encoder from MP3 files to FLAC and click Next.
How to rip your music CDs to FLAC - CNET
Also, you can set the error recovery for really badly scratched CDs: under EAC tab, EAC options:
It'll chew on a CD for hours, making dozens of passes over error sections.
Some of the CDs I get from the library look like a cat danced on them.
I just set EAC to highest recovery and let her rip overnight. Some CDs that had many errors from a quick rip are read perfectly.
Glad I and others could help.
EAC comes preloaded with a flac coder, but if you didn't set it during the installation, you just have to point the compressor option to the flac folder (As Howie pointed out): under EAC tab, compression options, click browse, there is a flac folder in the EAC directory:
When installing:
Installation
Step 1: Download and install Exact Audio Copy, which includes the FLAC codec. You'll need to have an audio CD in your optical drive in order for EAC to configure the drive for use.
Step 2: When you get to the components to install, make sure that FLAC is checked.
Choose to install FLAC
Step 3: At the encoder selection section, change the encoder from MP3 files to FLAC and click Next.
How to rip your music CDs to FLAC - CNET
Also, you can set the error recovery for really badly scratched CDs: under EAC tab, EAC options:
It'll chew on a CD for hours, making dozens of passes over error sections.
Some of the CDs I get from the library look like a cat danced on them.
I just set EAC to highest recovery and let her rip overnight. Some CDs that had many errors from a quick rip are read perfectly.
Glad I and others could help.
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Hey Mark,
Compared to CD-DA, Mode 1 CD-ROMs adds 32 bits of of CIRC and another layer of Reed-Solomon EC. The net result is a frame of CD-DA can hold 2352 bytes of user data, while a Mode 1 CD-ROM can only hold 2048 bytes of user data.
This is the reason we implored our customers to submit masters as DDP files (Disc Description Protocol) on a Mode 1 ROM, not as a CD-DA. A replication plant bases it's QC strategy on the ability to prove a bit-for-bit between the customer master and replica. CD-DA are not as reliable, and especially CD-R DA are a poor master format due to less error correction capabilities.
Mode 2 ROMs hold a bit more but are unsuitable for data storage due to the fewer error correction capabilities.
OK, now those brain cells can go to wherever cells go to die...
Howie
The Older I Get
The Meaner I Get
I'm pretty sure within the next few years I'll be
BITING PEOPLE !
-rm
The Meaner I Get
I'm pretty sure within the next few years I'll be
BITING PEOPLE !
-rm
This is a follow up on post # 4471
John Curl's Blowtorch preamplifier part III
I put the two 12 inch drivers (same P/N but specs don’t match very well) on the bench for some more organized measurements.
Enclosed air btn the two cones has a volume of 1.86lt.
The voice coil of the passive cone is shunted only by the Ro of the soundcard (10kOhm).
Drive to the other unit is via an LM3886 amplifier
I think that with these drivers, the distortion seen on the EMF of the passive cone is to be attributed not to the minimal compressibility of the air but to suspension nonlinearities and may be to magnetic nonlinearities.
George
John Curl's Blowtorch preamplifier part III
I put the two 12 inch drivers (same P/N but specs don’t match very well) on the bench for some more organized measurements.
Enclosed air btn the two cones has a volume of 1.86lt.
The voice coil of the passive cone is shunted only by the Ro of the soundcard (10kOhm).
Drive to the other unit is via an LM3886 amplifier
I think that with these drivers, the distortion seen on the EMF of the passive cone is to be attributed not to the minimal compressibility of the air but to suspension nonlinearities and may be to magnetic nonlinearities.
George
Attachments
can you reverse the driven VC and pass cone? Same results? Just checking to see how alike the two are.
-RM
-RM
Hi Joe,
Rather than that, look at it from the other angle. There is no progress if we work on things that have been shown to be true, just because we feel there is a chance it isn't.
-Chris
Rather than that, look at it from the other angle. There is no progress if we work on things that have been shown to be true, just because we feel there is a chance it isn't.
-Chris
Hi Chris, I don't think Orville was thinking like that. I showed the quote to illustrate that conservative thinking has often been a brake. It was not meant as a rejection of things that are more likely to be true than not. Just that it can lead to inflexible thinking (and often I suspect related to ego rather than truth). And is truth an absolute or is it relative? Can truth be made clearer still? Is truth just what is functional, or is it also aspirational? What I worry about (relatively speaking) in when truth and ideology becomes indistinguishable.
Cheers, Joe
Cheers, Joe
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