How to Build a Listening Room, Part 2
In our first installment, we talked about performance speakers and the importance of proper speaker placement. We also covered the critical dimensions of the room and of its acoustic properties. Now, we dive into what drives the sound!
Driving sound to each channel is the amplifier, the heart of your system,. Unlike your Home Theater’s AV Receiver that houses an all-in-one pre-amp, amplifier and processor for surround sound, hi-end audio systems have dedicated amplifiers, often one per channel. A more sophisticated set-up will have 2-way or 3-way amps that support each speaker. A pre-amp serves as the input device. It will convert signals from all audio sources such as a turntable, tuner and streaming devices to the signal that the amp wants. It’s imperative that the amplifier be matched to the specifications of the speaker to provide optimal output. Automation Design + Entertainment can guide you through your choices and design to your taste. Part of the B&W Group, Classe offers exquisite sound to complement any hi-end audio system. Check out this recent review of the Sigma 2200i integrated amplifier by Sterophile.
It is now common knowledge that HDMI Cables are required to pass 4K. Hi-end audio has similar requirements and, like video, quality cables are recommended for a solid, clean connection. That doesn’t necessarily mean the most expensive, just of good quality and appropriately sized for the given application. We can calculate the appropriate gauge cable that will deliver the necessary wattage to the speaker as required, based on the distance. As for connectors, gold are preferred over silver or other metallic while locking connectors are a good choice for infrequently moved equipment.
Having clean, sufficient power is paramount to the sound quality. Every AV system needs a name brand, purposely built, surge protector. Surge protection will remove artifacts from your power, filtering out spikes and dips. Insufficient power can make the amplifiers put out harmonics that will “color” the sound, creating distortion.
Once the system has been designed and components selected, the next step is installation and commissioning. We’ll “tune” the room to enable undistorted sound, measuring and testing the room’s characteristics, reverb, etc. By adjusting equalization (EQ), gain structure and speaker placement, we aim for a flat frequency response.
We often hear that a turntable’s needle against vinyl is the real way to listen to music. It can be argued that the harmonic distortion created introduces a mild alteration that is perceived by many an old-schooler as warmth. The pops and crackles the needle yields evoke a “vintage” sense that some find pleasing and quite authentic. However, according to Mark Slee of Facebook, “In terms of fidelity and accuracy of sonic reproduction, CDs outperform vinyl in significant ways. With that said, there are sonic artifacts and emotional attachments with vinyl that many find pleasing. This creates a preference for vinyl - which some would describe as better, but this is a subjective quality as measured by the ear of the beholder.” With turntable sales up 16%, there’s apparently some listeners out there that agree.
The higher the bit rate of the audio, the more accurate the audio. Analog is uncompressed and truest to form. Overly processed audio, on the other hand, can mask or cancel parts of the music, eliminating the ability to hear everything as it was mastered.
All things being equal, the more information a format can transmit, the better the sound produced. For the best listening experience, the sound transmitted should pass through quality cabling and components and be listened to in a space that is purposefully designed to capture every nuance. Are you ready to experience what you’ve been missing? Let our team at Automation Design + Entertainment help design or retrofit your personal listening space and enjoy music as it was intended to be!