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Forum: Audio theory, Setup and Chat   08-29-2014, 08:40 PM
Replies: 16
Views: 225
Posted By arnyk
Everything electronic with digital logic or high...

Everything electronic with digital logic or high speed power switching devices in it that is sold in the US has to pass FCC Part 15 testing. In some sense everything is built to the same final...
Forum: Audio theory, Setup and Chat   08-29-2014, 08:34 PM
Replies: 5
Views: 61
Posted By arnyk
An AR3 is a passive speaker which means that it...

An AR3 is a passive speaker which means that it can't possibly hum on its own. The hum is probably coming from the amplifier that is driving it. If the equipment being used with the AR3 is as old as...
Forum: Audio theory, Setup and Chat   08-29-2014, 08:30 PM
Replies: 16
Views: 225
Posted By arnyk
EMI is like a bad smell. In many cases you don't...

EMI is like a bad smell. In many cases you don't know how it got to you, but you know when it gets to you. It often flows through the air like a radio signal because it can be a radio signal. Or, it...
Forum: 2 Channel Audio   08-29-2014, 08:25 PM
Replies: 8
Views: 158
Posted By arnyk
No. USB rules. They generally have a...

No. USB rules.



They generally have a bit-perfect I/O mode that may not be the default but is usually available.



Enough to know that separating the DAC function and the computer...
Forum: 2 Channel Audio   08-29-2014, 08:16 PM
Replies: 64
Views: 1,311
Posted By arnyk
One of things that the above post does not seem...

One of things that the above post does not seem to show an understanding of is the well known fact that R&D is an iterative process. In real world R&D you build a prototype, test it, find some...
Forum: CD Players & Dedicated Music Transports   08-29-2014, 01:40 PM
Replies: 715
Views: 30,567
Posted By arnyk
Did you make full disclosure - that your...

Did you make full disclosure - that your impressions are probably due to the fact that you were listening to different music at different SPLs?

You are aware of course that the same music sounds...
Forum: Audio theory, Setup and Chat   08-29-2014, 12:08 PM
Replies: 11
Views: 130
Posted By arnyk
That case seems to have a lot of drive slots....

That case seems to have a lot of drive slots. Manufacturer and model?
Forum: 2 Channel Audio   08-29-2014, 09:42 AM
Replies: 24
Views: 672
Posted By arnyk
http://www.fredwhitlock.com/images/scott-integrate...

http://www.fredwhitlock.com/images/scott-integrated.jpg

Point of order. The amp above is a Scott 299 which was sold only as an assembled unit. The corresponding kit was the LK72 with a front panel...
Forum: 2 Channel Audio   08-29-2014, 09:15 AM
Replies: 64
Views: 1,311
Posted By arnyk
One reason why so much electronics sounded the...

One reason why so much electronics sounded the same 15 years ago is that the technical differences that existed then were far below what was known to be the Just Noticable Differences (JNDs) for the...
Forum: Receivers, Amps, and Processors   08-29-2014, 08:37 AM
Replies: 8
Views: 139
Posted By arnyk
Have you done a subwoofer crawl or something like...

Have you done a subwoofer crawl or something like it in order to determine the acoustically best place for the subs?

Depending on the room, one sub in front and one sub in the rear might be the...
Forum: Receivers, Amps, and Processors   08-29-2014, 05:38 AM
Replies: 8
Views: 139
Posted By arnyk
I'm surprised at the apparent commitment to mount...

I'm surprised at the apparent commitment to mount the amps where they are highly visible.
Forum: Audio theory, Setup and Chat   08-28-2014, 02:35 PM
Replies: 31
Views: 753
Posted By arnyk
Name callling is never a good idea. This forum...

Name callling is never a good idea. This forum has a mixture of true amateurs and true professionals posting, and this particular name is like saying that someone is unprofessional.

Attack the...
Forum: Audio theory, Setup and Chat   08-28-2014, 02:31 PM
Replies: 17
Views: 338
Posted By arnyk
Right. Studio monitor has degenerated into a...

Right. Studio monitor has degenerated into a marketing term that means whatever its author wants it to mean.
Forum: Audio theory, Setup and Chat   08-28-2014, 02:27 PM
Replies: 19
Views: 295
Posted By arnyk
Actually, it is both. That, too. ...

Actually, it is both.



That, too.




The way I usually test a line array for phasing and lobing is to stand in front of it and vary the height of my ears while listening to something with...
Forum: Audio theory, Setup and Chat   08-28-2014, 01:34 PM
Replies: 17
Views: 338
Posted By arnyk
The LS3/5a was quite an innovation in its day,...

The LS3/5a was quite an innovation in its day, but remember this is a 1970's design.

They are still made on a revival/replica basis.
...
Forum: Audio theory, Setup and Chat   08-26-2014, 08:20 AM
Replies: 21
Views: 417
Posted By arnyk
Here are two articles about center channel...

Here are two articles about center channel speaker design that I've found helpful:

http://www.audioholics.com/loudspeaker-design/center-channel-designs-1
...
Forum: Audio theory, Setup and Chat   08-26-2014, 07:31 AM
Replies: 21
Views: 417
Posted By arnyk
Not all center channel speakers are the same,...

Not all center channel speakers are the same, especially in terms of localization.

I don't see make and model of what you have, but if its one of those MTM-on-its side models that could be part of...
Forum: Speakers   08-26-2014, 01:46 AM
Replies: 11
Views: 241
Posted By arnyk
Yes.

Yes.
Forum: Speakers   08-25-2014, 02:12 PM
Replies: 12
Views: 547
Posted By arnyk
And since PC351 impedance curves seem to be a bit...

And since PC351 impedance curves seem to be a bit hard to find..

http://www.avsforum.com/forum/attachment.php?attachmentid=229289&d=1409001064

This is with the Vifa tweeter, but given the...
Forum: Speakers   08-25-2014, 12:30 PM
Replies: 22
Views: 507
Posted By arnyk
Cone area doesn't describe the bass dynamic range...

Cone area doesn't describe the bass dynamic range of a driver, you have to include Xmax.

Maximum possible Xmax tends to go up with the diameter of the cone.

So a 12" driver has about 250% the...
Forum: Speakers   08-25-2014, 12:11 PM
Replies: 12
Views: 547
Posted By arnyk
http://www.avsforum.com/forum/attachment.php?attac...

http://www.avsforum.com/forum/attachment.php?attachmentid=229153&d=1408993621


Frequency response of PC 351 with OX20SC00-04 replacement tweeter (not OT19NC000 as shown on illustration in error)
Forum: Receivers, Amps, and Processors   08-25-2014, 06:23 AM
Replies: 13
Views: 248
Posted By arnyk
At this time the tuner portion of a receiver is a...

At this time the tuner portion of a receiver is a fairly small shielded box that probably costs a few dollars to make, maximum. The miniaturization and decosting of AM and FM tuners has been pretty...
Forum: Audio theory, Setup and Chat   08-25-2014, 03:30 AM
Replies: 4
Views: 185
Posted By arnyk
I get not being able to implement 5.1 in a living...

I get not being able to implement 5.1 in a living room, but 5.1 isn't required for good reproduction of voices in most media. 3.0 done well will do the job. You are basically fighting the battle of...
Forum: 2 Channel Audio   08-25-2014, 03:23 AM
Replies: 14
Views: 582
Posted By arnyk
The worst thing about any connection like Apple...

The worst thing about any connection like Apple TV is the media that it plays.

I have the option of doing all of my watching and listening through a single box, a single digital path namely via ...
Forum: Speakers   08-25-2014, 02:54 AM
Replies: 11
Views: 241
Posted By arnyk
If you connect a truly balanced source via...

If you connect a truly balanced source via unbalanced connections and then upgrade to balanced connections you will obtain a non-trivial 6 dB boost in volume, all other things being equal.
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