Philthy posted:

Thread has come full circle. People making fun of people buying Nordost cables for $5,000 when they could just go buy a BJC for $35. Now people buying the $35 cables are being made fun of for not buying $1 cables.

Boiled Water posted:

This just hit me: Shouldn't live music be the only real pure form of music? Is there some exception because live concerts doesn't allow you to buy excessive amounts of really expensive electronics?

wikipedia posted:

A line level describes a line's nominal signal level as a ratio, expressed in decibels, against a standard reference voltage...

The most common nominal level for consumer audio equipment is −10 dBV, and the most common nominal level for professional equipment is 4 dBu. By convention, nominal levels are always written with an explicit sign symbol. Thus 4 dBu is written as +4 dBu.

Expressed in absolute terms, a signal at −10 dBV is equivalent to a sine wave signal with a peak amplitude of approximately 0.447 volts, or any general signal at 0.316 volts root mean square (VRMS). A signal at +4 dBu is equivalent to a sine wave signal with a peak amplitude of approximately 1.736 volts, or any general signal at approximately 1.228 VRMS

wikipedia posted:

A "phono input" is a set of input jacks, usually RCA jacks, located on the rear panel of a preamp, mixer or amplifier, especially on early radio sets, to which a phonograph or turntable is attached. Modern styli (phonograph needles) and phono cartridges give a very low level output signal of the order of a few millivolts which the circuitry amplifies and equalizes.

Through at least the 1980s, the phono input was widely available on consumer stereo equipment—even some larger boomboxes had them. By the 2000s only very sophisticated and expensive stereo receivers retained the phono input, since most users were expected to use digital music formats such as CD or satellite radio. Some newer low-cost turntables include built-in amplifiers to produce line-level (one volt) outputs; devices are available that perform this conversion for use with computers; or older amplifiers or radio receivers can be used. Nearly all DJ mixers have two or more phono inputs, together with two or more one-volt line inputs that also use RCA connectors.

This "phono input" designed for the millivolt signal from an unamplified turntable should not be confused with the modern standard one-volt line input and output that also uses RCA connectors and is found on video cameras, recorders and similar modern equipment.

Opensourcepirate posted:

If your carrying a signal of only a few millivolts, then you absolutely will hear it when you have a millivolt of noise induced on your coathanger RCA cable.

Boiled Water posted:

This just hit me: Shouldn't live music be the only real pure form of music? Is there some exception because live concerts doesn't allow you to buy excessive amounts of really expensive electronics?

baka kaba posted:

If there are PA speakers involved there's nothing 'pure' about it, all the house gear and the engineer exist to turn a bunch of competing instruments into something clean and listenable. Even if you're just listening to what's coming off the stage it still depends on how the space has been treated and where you're standing.

Socket Ryanist posted:

This is why I usually prefer to see bands in small spaces where you actually get the sound from each instrument separately. Your ear and brain do a much better job of mixing the sound than an engineer on a board ever could.

88h88 posted:

I've never known a band be able to EQ themselves properly. "I'm lead guitar, I should be louder than everyone else by a large margin!" It's usually the bass player that gets a raw deal and he usually doesn't know how to set his tone properly anyway... "I play bass so the bass knob on my amp is turned way up because bass, right?!" and the end result is the guitarist being loud as gently caress, the drummer trying to go louder and the bass player just kicking out a fuckton of midrange and the entire thing sounds poo poo.

Socket Ryanist posted:

Well if the room isn't too echoey, then all of the sounds are coming from different directions which makes them stay separate much more than when they're all coming out of the same speakers.

Although I should say I'm mostly thinking of older and "quieter" bands here, not your typical teen or 20-something rock band where everyone's fighting to be the loudest instrument.

88h88 posted:

I've never known a band be able to EQ themselves properly. "I'm lead guitar, I should be louder than everyone else by a large margin!" It's usually the bass player that gets a raw deal and he usually doesn't know how to set his tone properly anyway... "I play bass so the bass knob on my amp is turned way up because bass, right?!" and the end result is the guitarist being loud as gently caress, the drummer trying to go louder and the bass player just kicking out a fuckton of midrange and the entire thing sounds poo poo.

jonathan posted:

Or Lemmy, who turns off the high and low, cranks the mid to max, and turns up Murder One to 11, and then plays the bass like a guitar.

jonathan posted:

The Quantum Light posted:

The flashing lights from this device will regularize the quantum movement in audio equipment and thus improve the clarity of the sound. There are several ways to use this light: (1) Flash it on the CD and DVD for a few seconds, you will hear improved sound and see enhanced pictures. (2) flash it on all the wires, including interconnect wires, video wires, digital wires and power cords and equipment, you will get better sound and sharper pictures. (3) Flash it on any instrument from violin, guitar, piano or synthesizer, you will get a better sound when you play. There are some side benefits to human health: Flash it on the wounded area of your body for a few minutes, it will improve the circulation of the blood which may help to reduce the pain and may heal the wounds faster. Flash it to certain pressure points of your body to improve your health, e.g.. a few minutes to the center bottom of your foot may help you sleep better. Benefits to your drink: Flash it a few seconds to your cheap wine will help it taste smoother and bring out the original grape flavor. However, flashing light against expensive wine may simplify its taste, therefore, it is not recommended.

Price: $370/each

Ultra tweeters posted:

Description/Theory: These remarkable, next generation audio devices, sold in pairs, operate at extremely high frequencies -- much higher than the audio band, actually in the microwave band, above 1 Gigahertz (GHz). Ultra Tweeters are connected to the output terminals of existing speakers with thin, flexible cables provided. Ultra Tweeter's principle of operation is very unconventional - they don't generate frequencies in the audio band or even in the 20-100 KHz band like super-tweeters, but in the Gigahertz frequency band (normally used for satellite and microwave communications).

Ultra Tweeters organize and improve flow of acoustic energy through the propagation medium (air) in the room, allowing the air to more efficiently transfer the main speakers' acoustic signal to the listener. Like a policeman in busy downtown traffic, Ultra Tweeters maintain a more orderly, uniform and efficient flow of the acoustic waves through the air by quantum mechanically modifying the air molecules. This modification of the air molecules produces a wider frequency bandwidth, lower noise floor, more "air," and lower distortion. Ultra Tweeters are compatible with any existing speakers without the need for time alignment of drivers or having to match the Ultra Tweeters' acoustic output to existing speakers.

Operation: Ultra Tweeters may be placed on top of the existing speaker cabinets. They may also be placed in any other convenient location in the room since they do not behave like conventional super-tweeters - i.e., they do not operate in the audio band, or even in the 20-100 KHz band of
high-performance super-tweeters. In fact, Ultra Tweeters will improve the performance of systems that include high-performance super-tweeters.

Sale Price: $720/pr (20% off $900)

quote:

(normally used for satellite and microwave communications)

88h88 posted:

Are these the good kind or bad kind of microwaves? I can imagine someone sitting listening to their music slowly getting cooked from the inside out.

88h88 posted:

Are these the good kind or bad kind of microwaves? I can imagine someone sitting listening to their music slowly getting cooked from the inside out.

Khablam posted:

They're soundwaves (vibrations in the air) not microwaves, a particular frequency range of EM radiation.

It's completely bogus.

grack posted:

Would've carried more weight without the spelling mistake

longview posted:

I used this calculator to work out the power loss of a 1 GHz signal in air
1598225 dB/m

quote:

Small Slipstream Quantum Purifier, Each

Small Slipstream Quantum Purifiers are typically used in lower-current AC circuits, non-AC analog and digital circuits, and smaller midrange drivers and tweeters.

(Click MORE INFO for Specifications)



$100.00 $100.00 pcX USD Price

The Locator posted:

On the subject at hand, unless there is no 'sound guy' (I guess they are calling themselves engineers these days) at the venue, and no amplification, there is no such thing as non-EQ'ed live music. Street music with a few strings or some brass would probably come the closest, and it's rare to find more than two instruments that sound good together in a live environment without some sort of mixing/EQ. Caveat: I don't live in a place where live street music is common at all, so I'm sure I've missed some.

TomR posted:

I was looking for a local place to pick up a volume control pot and I found this:http://www.partsconnexion.com/bybee_purifiers.html


Now I'm not sure I trust them enough to buy a volume knob from them.

quote:

CataCoffin

Two-way front speakers
4-inch midbass drivers
Wide range tweeter with external cooling
8-inch sub bass element
Custom built 2.1 amplifier
T-class stereo amplifier
Tripath Class-T Digital Power Processing™ Technology
SP Output R+L (4 ohm): 2x15W
Output (8 Ohm): 2x10W
Sub bass amplifier 50W RMS with SP output 80/120W
Frequency range: 22Hz-20kHz
Signal/noise ratio: >98dB signal
Acoustic absorption factor αp= 0,65-0,95


CataTomb

Performance-upgradeable music server
7-inch TFT-screen
2,5 GHz Intel Core processor
4 GB 1600 MHz HDD
Wireless 4G internet connection


CataPlay

Access to million of tracks
Collaborative playlists

88h88 posted:

Introducing a coffin with an 'audiophile' speaker setup.