Podcast #1142: Audiophile Myths

HDTV and Home Theater Podcast

On this week’s show we take a look at some audiophile myths and debunk them. We also read your emails and take a look at the week’s news.

News:

• LG Debuts Wireless Dolby Soundbar For G4 OLED evo TVs
• Have You Signed Up for a Streamer to Watch a Specific Show?
• DirecTV Drops Local Stations From Lower-Priced Bundle
• CSA unveils smart home security standard
• ESPN Signs Six-Year, $7.8 Billion Extension for the Expanding College Football Playoff Tournament

Other:

• TV Station Launches Multiple 4K Broadcasts OTA on ATSC 1.0

Audiophile Myths

Why do some in our hobby spend so much money on their gear? And for this discussion we are not talking about reasonably priced quality products that can cost a few thousand dollars. We’re talking about really expensive stuff like speakers that cost $20,000 each, speaker wire that costs $100 a foot, or any other product that needlessly separates you from your money all in the name of squeezing out the last bit of performance. On today’s show we will dispel a few Audiophile Myths and hopefully save you money and help you get more out of the equipment you own.

Myth: Even though people cannot hear frequencies above 20 KHz, it is important that audio equipment be able to reproduce higher frequencies to maintain clarity.

Fact: Producing sounds at a frequency beyond what humans can hear is not sonically useful. However, a good amplifier and speaker generally have a frequency response beyond the limits of hearing. Conversely, the lack of an extended response can indicate that the amplifier designers cut some corners. Keep in mind you don’t have to pay a lot of money for this. A Fosi amp goes for $100 and produces frequencies from 20Hz to 20kHz.

Myth: Gold-plated connectors sound better than connectors made of standard materials (Copper, Nickel. Or Tin).

Fact: Gold does not oxidize, and oxidized connectors can cause problems. With that said, gold on it's own will not make your audio better. As far as oxidation goes, good quality wire and connectors will take years to oxidize under normal circumstances. Don’t waste money on gold plated when copper will do the exact same thing!

Myth: Speakers Need Time to Break In

Fact: I used to believe this based on my own listening. But there was no way for me to actually remember what my speakers sounded like from day one to compare them with day five after 30 hours of use. It wasn’t until I saw objective tests performed on speakers when they were new and again when they were used for 30 hours. The wave forms were sonically identical. Conclusive scientific results. End of story!

Now some bigger drivers like woofers and subwoofers use spiders as stiffening agents instead of thicker, more rigid materials in their production. These do lose stiffness in their suspension with use, but it usually happens within minutes — not hours or days.

Myth: All acoustic treatments will improve the sound.

Fact: You can’t throw up acoustic treatments just anywhere and expect an improvement in sound. Acoustic treatments are made to address specific problems. With that said, if you have a room with bare walls and wood or tile floors, get soft materials on the walls and rugs on the floor. In this case dampening the echos will help. But to do a full treatment you need to be more exact,

Here is a list of articles from Audioholics that can help you treat your room. “Room Reflections and Human Adaptation for Small Room Acoustics,” “Early Reflections and Bass for Small Room Acoustics,” and “Early Reflections in Home Theater Rooms: Beneficial or Detrimental?”

Myth: Speakers need to be isolated to get the most out of them.

Fact: Well designed loudspeakers don't transmit much mechanical energy through their enclosures. Loudspeakers are transmitting most of their energy into the air which then exerts force on objects in the room. You are likely getting more vibrations from pressure waves hitting other objects in the room as opposed to the cabinet vibrating.

In my room I have played some of my speakers at very loud volumes. I then touched the drivers on the speakers that were adjacent and there was some movement. I’m not sure that they did anything to distort the sound in the room, but they were vibrating more than the cabinets of the speaker that I was using. There may be some aesthetic reasons you may want to isolate your speakers including pads to protect your floor.

Myth: All your speaker wire should be the same length.

Fact: Speed of electricity is 186,000 miles a second. That means that a 5 meter and 10 meter cable have statistically no difference as to when the signal gets to the drivers. But using similar length speaker wire will increase the resale value of your speakers should you choose to sell them!

Myth: You need to break in your speaker wire.

Fact: Yes!! Do not drive them past 10 for the first 12,000 miles. After that if your amp goes to 11, have at it!!

Seriously, when it comes to speaker wire buy high quality wire. Just don’t pay exorbitant prices. Solid copper 14 Gauge speaker wire should not cost you more than $25 for fifty feet. If you are doing short runs (less than ten feet) you can use higher gauge wire and save some copper both figuratively and literally!! Well provided you are paying in coins anyway.