Note the red lines on the back panel showing where to place the speaker cables, between the two red terminals. Also note the red line pointing to the left channel input. When the amp is switched into mono mode, only the left channel may be used for connecting to the preamplifier. This is because the right channel is now fed the same input the left channel receives, just flipped upside down - when one channel goes positive, the other goes negative. Doing this doubles the voltage and if the power supply is big enough, increases the wattage as well.
The use of bridged amplifier technology is not new and its use is increasing. But these increases are coming not from more stereo amplifiers with a stereo/mono switch, but rather from designers purpose building bridged amplifiers; like the BHK Signature which internally has four channels of amplification to make stereo.
An amplifier that is designed as a bridge cannot be bridged again for greater power. To create a mono amplifier from a bridged design, we need to take a different approach: parallel, which we will discuss tomorrow.
Breaking conventions
Note the red lines on the back panel showing where to place the speaker cables, between the two red terminals. Also note the red line pointing to the left channel input. When the amp is switched into mono mode, only the left channel may be used for connecting to the preamplifier. This is because the right channel is now fed the same input the left channel receives, just flipped upside down - when one channel goes positive, the other goes negative. Doing this doubles the voltage and if the power supply is big enough, increases the wattage as well.
The use of bridged amplifier technology is not new and its use is increasing. But these increases are coming not from more stereo amplifiers with a stereo/mono switch, but rather from designers purpose building bridged amplifiers; like the BHK Signature which internally has four channels of amplification to make stereo.
An amplifier that is designed as a bridge cannot be bridged again for greater power. To create a mono amplifier from a bridged design, we need to take a different approach: parallel, which we will discuss tomorrow.
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