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Forum: Audio theory, Setup and Chat   10-21-2014, 04:43 PM
Replies: 35
Views: 699
Posted By fastl
The purpose of x-curve is to make reproduced...

The purpose of x-curve is to make reproduced sound appear flat at high frequencies in a B-chain theater environment. The curve (3 dB/octave rolloff above 2 kHz) was derived by adjusting the frequency...
Forum: Audio theory, Setup and Chat   10-20-2014, 03:50 PM
Replies: 35
Views: 699
Posted By fastl
The above commentary suggests that there is an...

The above commentary suggests that there is an assumption that the only content being viewed (and listeneed to) at home is from movie soundtracks mixed in a large theater setting to the x-curve.
...
Forum: Audio theory, Setup and Chat   10-18-2014, 05:59 AM
Replies: 35
Views: 699
Posted By fastl
The SMPTE calibration thing (pink noise @ 85 dBC)...

The SMPTE calibration thing (pink noise @ 85 dBC) is to insure that playback level in the theater is the same as where the content is being created. They never claimed that you would enjoy listening...
Forum: Ultra Hi-End HT Gear ($20,000+)   09-30-2014, 04:39 PM
Replies: 23
Views: 2,554
Posted By fastl
I wonder how long it will take the FCC to catch...

I wonder how long it will take the FCC to catch on to these? I can see hoards of class-D amplifiers spewing out all sorts of RFI in the future. Will do wonders for radio reception.
Forum: Audio theory, Setup and Chat   09-21-2014, 07:20 PM
Replies: 10
Views: 467
Posted By fastl
C'est magnifique!

C'est magnifique!
Forum: Audio theory, Setup and Chat   09-21-2014, 06:14 PM
Replies: 10
Views: 467
Posted By fastl
What's a "divisive" scale? Some applications give...

What's a "divisive" scale? Some applications give you the option of plotting pink noise as flat or white noise as flat. There isn't any nomenclature on your graph that says one way or the other....
Forum: Audio theory, Setup and Chat   09-21-2014, 03:41 PM
Replies: 16
Views: 556
Posted By fastl
You've got it backwards. I am sure many would...

You've got it backwards. I am sure many would argue that they believe what they claim they hear. Others are dubious about such claims, since the "believers" never seem to be able to substantiate...
Forum: Audio theory, Setup and Chat   09-21-2014, 03:22 PM
Replies: 10
Views: 467
Posted By fastl
I second the notion that your graph looks like...

I second the notion that your graph looks like white noise. Pink noise slopes downward 3 dB per octave when plotted on a spectral density graph.

All white noise isn't the same either, btw. Ideal...
Forum: Video Processors   09-17-2014, 03:36 PM
Replies: 11
Views: 1,439
Posted By fastl
OK, thanks. I still watch a lot of older SD...

OK, thanks. I still watch a lot of older SD material.



Yep - I believe that is what it tis (basically).
Forum: Video Processors   09-16-2014, 03:34 PM
Replies: 11
Views: 1,439
Posted By fastl
Well, the price certainly is attractive. I...

Well, the price certainly is attractive. I thought it would be more like $1499. How well does this process work on 480i upscaled material? Does it do anything useful, or just add annoying artifacts?
Forum: Ultra Hi-End HT Gear ($20,000+)   09-06-2014, 06:23 AM
Replies: 839
Views: 29,921
Posted By fastl
Ultimately, noise is determined by the quality of...

Ultimately, noise is determined by the quality of the grounding employed in the pwb design in conjunction with careful component layout and organization. Whatever was designed into your equipment's...
Forum: Ultra Hi-End HT Gear ($20,000+)   09-05-2014, 05:15 PM
Replies: 839
Views: 29,921
Posted By fastl
Not necessarily. That product is aimed at the...

Not necessarily. That product is aimed at the audiophile market. That's the market populated with all sorts of mystical (voodoo) beliefs. They might have put it in there for marketing reasons because...
Forum: Ultra Hi-End HT Gear ($20,000+)   09-04-2014, 06:40 PM
Replies: 839
Views: 29,921
Posted By fastl
Me too! But as a hardware design engineer, I...

Me too! But as a hardware design engineer, I still admire the design and construction. I think we're sort of "interlaced" with the shooting gallery here.
Forum: Audio theory, Setup and Chat   09-03-2014, 04:38 PM
Replies: 7
Views: 345
Posted By fastl
Do you want know what type of loudspeaker systems...

Do you want know what type of loudspeaker systems or electronics? The better loudspeaker systems are JBL cinema series and HPS4000. For amplifiers, you see QSC, BGW, etc. Travel over to the...
Forum: Ultra Hi-End HT Gear ($20,000+)   09-02-2014, 04:01 PM
Replies: 839
Views: 29,921
Posted By fastl
Actually I had been reading through this topic...

Actually I had been reading through this topic page after page, and had remembered seeing someone call attention to PS Audio using an FPGA instead of the more common IC DAC implementation....
Forum: Audio theory, Setup and Chat   09-01-2014, 06:06 AM
Replies: 14
Views: 430
Posted By fastl
JHAz got it correct. There is no such thing as...

JHAz got it correct. There is no such thing as "reference dialog level" in motion pictures. It's whatever the folks mixing the film feel like making it.

Dolby Labs (Eric Benjamin) performed a...
Forum: Ultra Hi-End HT Gear ($20,000+)   08-23-2014, 05:46 AM
Replies: 839
Views: 29,921
Posted By fastl
Stereophile magazine just published test results...

Stereophile magazine just published test results of the PS Audio Perfectwave Directstream DAC in the Sept 2014 issue (pg. 70). Interesting to compare performance of this "FPGA DAC" with a true SOTA...
Forum: Ultra Hi-End HT Gear ($20,000+)   12-20-2013, 04:33 PM
Replies: 86
Views: 3,029
Posted By fastl
Obviously, you can't take a hint.

Obviously, you can't take a hint.
Forum: Ultra Hi-End HT Gear ($20,000+)   12-20-2013, 06:01 AM
Replies: 86
Views: 3,029
Posted By fastl
A suggestion to get off of the cable thing! This...

A suggestion to get off of the cable thing! This whole "discussion" is a sophistry. It really isn't about cables at all. Cables are merely the medium being used by crackpot audiophiles to promote...
Forum: Ultra Hi-End HT Gear ($20,000+)   12-02-2013, 04:12 PM
Replies: 12
Views: 831
Posted By fastl
Quote:It might change his mind on tubes ...

Quote:It might change his mind on tubes


I get the impression that the honeymoon is over! I'll have to go check out those KT-120s. I've seen them around for awhile, but never looked any closer.
Forum: Ultra Hi-End HT Gear ($20,000+)   12-01-2013, 04:31 PM
Replies: 86
Views: 3,029
Posted By fastl
Quote:just like you will never be a member of...

Quote:just like you will never be a member of the club of respected audio designers, for lack of contribution of any audio design


Daniel Weiss certainly is a respected audio designer and he...
Forum: Ultra Hi-End HT Gear ($20,000+)   12-01-2013, 04:12 PM
Replies: 12
Views: 831
Posted By fastl
Well I remember frequently re-tubing Dynaco MK...

Well I remember frequently re-tubing Dynaco MK IIIs, amongst others. Don't miss the ritual. I suppose you could use them as space heaters.
Forum: Ultra Hi-End HT Gear ($20,000+)   11-28-2013, 11:39 AM
Replies: 12
Views: 831
Posted By fastl
Glimmie, here a few thoughts on solving your...

Glimmie, here a few thoughts on solving your tube failure problem.

Try another brand of tube. I needed to buy a couple of replacement 6CG7s for my headphone amplifier a couple years ago. After...
Forum: Ultra Hi-End HT Gear ($20,000+)   11-27-2013, 04:18 PM
Replies: 39
Views: 1,905
Posted By fastl
Quote:having a CD speaker does not guarantee...

Quote:having a CD speaker does not guarantee that reflections have the same spectral response as the speaker


That's why they (Harman) are trying to design the off axis response of the speaker...
Forum: Ultra Hi-End HT Gear ($20,000+)   11-27-2013, 04:09 PM
Replies: 12
Views: 831
Posted By fastl
Dave O'Brien of McIntosh Test Clinic fame once...

Dave O'Brien of McIntosh Test Clinic fame once told me that in his opinion, the most reliable, stable output tube was the 6L6-GC. McIntosh originally was using Tung Sol 6550s in the MC275, but the...
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