Graphs for Fun and Profit

Ah, graphs. Those ubiquitous things with a horizontal X-axis and a vertical Y-axis, providing a visual representation of the relationship between at least two sets of data.

I was made aware of graphs in junior high school (as middle school used to be called) math classes. Graphs dominated my Economics studies in college. I especially remember the marginal utility graphs presented in Microeconomics classes.

Before I retired, exactly nine years ago, I tested the performance of storage area network systems under a simulated database load. I used the resulting spreadsheet data to generate graphs that compared the number of read and write operations per second to the latency required to perform those actions. Such fun!

Not wanting to miss an opportunity to get in a dig at Trump, here’s a graph of crude oil prices over the past five years, up to yesterday. (Brent is the premium grade of oil from the North Sea region.)

After being introduced to graphs, it wasn’t until the 11th grade that I came to appreciate, and even like, graphs. It didn’t happen in a math class; instead, it was when I started reading hi-fi magazines and seeing frequency response curves that compared amplitude against frequency in loudspeakers.

Lately, I’ve been having fun by comparing the frequency response curves of inexpensive in-ear monitors. These two super sounding Chinese IEM models each cost less than $20.

Between 400 Hz and ~2800 Hz they measure essentially identically. They diverge below and above that frequency range. It’s amazing how seemingly minor discrepancies result in such significant differences in overall sound.

If anyone were to ask me which IEM I prefer, based purely on sound I’d favor the Wan’er. But I would recommend the Gate to others over the Wan’er, because it has the better and more comfortable fit, a better cable, and it comes with a case.

From Denmark With Sound

My Thorens TD-166 MkII turntable (Germany) with Ortofon Super OM20 phono cartridge (Denmark) and Dynaco A-25 loudspeakers (Denmark)

Dynaco A-25 with “Aperiodic” vent behind the non-removal grill cloth.
Somebody, who I think is named Ronnie, runs a Hi-Fi Hall of Fame website. Which means he’s the one who gets to decide on what’s worthy of entry. One of the easiest picks for a classic loudspeaker is the Dynaco A-25.

https://hifihalloffame.com/equipment/dynaco-a25-loudspeaker/

The A-25 was just the right size — smaller than the Large Advent speaker, and larger than the Small Advent. It was a rarity for its time in being praised by both Consumer Reports and Stereophile.

https://www.stereophile.com/content/dynaco-25-loudspeaker

For anyone who thinks $1600 would be a lot of money to spend on a pair of speakers today, adjusted for inflation that’s what a pair of Dynaco A-25’s cost when they were introduced in 1969.

Dear Verizon

Verizon Fios has been my ISP for exactly twenty years. I dropped Fios TV a year ago, after the forced switch from QAM to IP. The soft picture quality, that compared unfavorably to even DVD, was unacceptable to me.

Verizon is now about to disable Bismo’s DVR. He has a 4K TV, and perhaps Fios IP TV will look better on that than it did on my 2K setup.

Regarding my Internet service, I am once again trying to get the attention of an actual person to address this serious security issue within the Verizon Fios router.

At home, when I disable Wi-Fi on my Pixel 8a phone, leaving 5G/LTE network access, I am able to use Verizon Home remote administration. This is with Normal Security set on the G3100 router and without Remote Administration enabled. Which means that I, or potentially anyone else, can access my Fios home network from anywhere on the Internet. Clearly, the Verizon Home utility has backdoor access into the G3100 router. This is a serious security hole.

https://community.verizon.com/discussion/1834065/verizon-home-access-works-over-the-internet?utm_source=community-share

A Year With Lyrion

A bit over a year ago, I reconfigured my music network over from the last vestiges of Logitech Media Server and onto Lyrion. It’s been great, and their adding support for SiriusXM has been wicked good. Will channel 20 finally turn me into a Springsteen fan?

For all of my experimentation with various headphones and in-ear monitors, if I were forced to limit myself to one pair of each type, for laptop and phone use, these would be them.

They are both from Sony and they happen to be the least expensive products they have. The headphones are the MDR-ZX110, the earbuds are the MDR-EX15LP. They sound nothing at all alike, but they’re equally excellent. Being hairless, I stuck some foam on the headphone band for cushioning.