2.1 Stereo is typically used for music listening rather than home theater systems, which aim to provide a multi-channel surround sound experience.

A home theater receiver's main purpose is to amplify and distribute audio signals to the speakers in the system.

VGA is primarily used for computer monitors and is less common in home theater systems, which typically use HDMI, DVI, or RCA Composite for video connectivity.

Subwoofers are specifically designed to reproduce low-frequency sounds, adding depth and impact to the overall audio experience.

DLP (Digital Light Processing) is primarily used in projectors and is less common in home theater displays, which typically employ LED, OLED, or Plasma technology.

Speaker layout refers to the specific arrangement and positioning of speakers in a home theater system to achieve optimal sound distribution.

MP3 is a compressed audio format commonly used for music listening, but it is not typically employed in home theater systems, which use lossless or high-resolution audio formats like Dolby Atmos, DTS:X, or THX.

Home theater projectors are designed to project images onto a screen or surface, creating a large-screen viewing experience.

Curved screens are primarily used in gaming and computer monitors, but they are less common in home theater systems, which typically employ flat fixed or retractable screens.

Surround sound refers to the ability of a home theater system to create a multi-dimensional sound experience by reproducing audio from multiple speakers placed around the listening area.

Loveseat seating is typically used for couples or small groups, but it is less common in home theater systems, which often employ row, stadium, or recliner seating arrangements.

Home theater media players are primarily designed to play physical media such as DVDs and Blu-rays, although some models may also have streaming capabilities.

Blackout curtains are used to block out external light, creating a darker environment for optimal viewing conditions, but they are not a type of lighting.

Upscaling refers to the process of converting lower-resolution video content to a higher resolution, typically done by home theater systems to improve the quality of older or lower-quality video sources.

White noise is a type of random noise used for testing and troubleshooting audio systems, but it is not typically used for home theater audio calibration, which often involves sound level meters, test tones, and pink noise.