What Are Solid State Home Theater Amplifiers and Their Types?

[Micheal Jack]

While tube amplifiers are becoming increasingly popular among audiophiles, Solid State amplifiers still have the lion's share of industry place due to their smaller size, weight, heat output, and low maintenance.

Solid State amplifiers come in various iterations.

A Preamplifier is a factor that takes all of the signals from your own various sources (MP3 player, AM/FM/Satellite tuner, TV, DVD, CD, turntable, etc) and selects between those, controls the amount, and performs any tone shaping.

The Power Amplifier is the factor that supplies the Muscle 環繞擴大機.The more expensive the power in Watts in the power amplifier, the louder, and cleaner, everything else equal, the sound you will hear.

To hold cost and/or overall space down, many audio enthusiasts combine the Preamplifier and Power Amplifier into one chassis, called an Integrated Amplifier. If your radio section can also be inside, we are in possession of a Receiver.

Solid State Amplifiers come in numerous Channels, each of these assigned to power one speaker. A traditional 2-Channel stereo amplifier is perfect for music listening with two speakers.

For Home Theater use, a 5 channel or 7channel amplifier will provide you with capacity to the Left, Right, Center, and two or four Surround speakers all in a single chassis.

Eventually, though, you merely come to an end of room in the amplifier chassis!

Fitting five to seven channels of Solid State Amplification into one amplifier is not a problem, with around about 200 Watts per channel...enough for a large proportion of users.

For everyone seeking to acquire all of the dynamic range possible from their music and movies, however, a lot more than 200 Watts per channel might be desirable.

The challenges now are size and weight. Engineering seven very high-power high-quality amplifiers in a single practical amplifier is very difficult. Locating a area for this kind of huge, heavy beast will be even harder!

For everyone uncompromising listeners, employing a suite of individual Monoblock single-channel Solid State Amplifiers, with one for each and every speaker, would be the ultimate choice. Just stack them up, each powering one speaker, to accomplish any total power level desired.

Additionally, having individual amplifiers for each and every speaker does away with any undesirable sound-bleed (crosstalk) between amplifiers channels completely, and allows unlimited growth for future needs.

Most Solid-State amplifiers are Direct Coupled, and therefore the transistors are connected directly to the speakers, therefore it becomes very important to match the amplifier to your speakers.

Always ensure that the Impedance of your speakers (it should say something similar to 4-Ohms on a label on the trunk of the cabinet) matches with the Output Impedances Allowed by the amplifier manufacturer.

If the amplifier has Output Transformers, it might have connections for speakers of varied impedances, eliminating the necessity to concern yourself with any amplifier / loudspeaker impedance compatibility issues.