Inside and outside the room
Transformer with a current strength of at least half of the nominal voltage, to compensate for a 4-ohm load 2x (4x speakers) such as stereo amplifiers professional standards, eg transformer 40Vct 20Amper. 40vct minimum supply voltage, if rectified would be more than 50vdc, transistor-power transistors will release energy (more life) if it supplied with 50Vdc voltage (40vct = vac).
2x 500watt (12 ", 15") per mono block amplifier, speaker total 4 units to 1 stereo amplifier.
It is advisable to use a 500W powered speakers (12 ", 15") as much as possible,
is more effective in improving the gain of using a large speaker> 1.000Watt (18 ", 21") with the least amount.
Transistor Final ...
Suggested use Sanken series 3 sets.
Too many final transistors without increasing the power supply transformer can weaken the thump of the bass and the sound is less stable, hoarse etc.
Carefully series Sanken many forgeries, for example, Sanken 2SC2922-5DY (quality is unstable and does not correspond to the price). Transistor driver must also be original! If there is a problem such as a hoarse result, resistor 300 burning, etc. This may be because of the component FALSE.
Resistors and capacitors do not really matter. The problem is electrolytic capacitors, Elko. Sorry average Elko Rubycon / Marcon / Nichicon (original) is less suitable to be applied here, because he is more suitable work in the dc current, which is suitable for this is Elko brand Nippon Chemicon (not all), and Elko another stable job at audio frequencies /air conditioning.
Almost all the native power amplifier assemblies only 500watt theoretically and practically
on paper and table test, but in the power of music, power is transferred to the speaker only a few dozen watts! Proof: cool heatsink / no heat, the sound is loud. Adjust the power speakers with a power amplifier used!
Characters and features:
- Hifi full range with bass gain 2 ~ 4 times the usual amplifier. Effective for the production of such bass amplifier class-h BTL.
- Speaker leaves more stable, not too advanced and not too far back even if exposed to shocks bass, speakers and power transistor expectations more durable.
- The values of the components are set such that the power transformer is more efficient. The power transformer is not wasted, not turned into drone / wild signal/oscillation, etc.
- Sound can travel long distances in the field due to consider the Doppler effect
To endure the speakers up to 4 units / ch,