The post mentioned right here offers a basic, inexpensive home theater system circuit which may be developed at home and employed for the preferred purpose. The results emanating from this circuit design are remarkably rich as well as have the features identical with the expensive hi-end types readily available.
Home theater systems are extremely common these days and possibly most of us carries one in their homes. In spite of this most of you could be quite displeased by the outcomes of these commercial brands and creates, or most likely quite a lot of you are totally not aware of what a truly effective home theater system really seems like.
Let’s learn the design elaborately with the following issues:
Essentially the circuits talked about are all busy tone controller configurations created for managing different frequency bandwidth discreetly and reproduce the outputs at the specific speakers.
The speakers are likewise in particular selected and built-in with the appropriate phases for getting the the majority of fully optimized benefits.
Seeking the demonstrated circuit above, the design is a typical tone controller circuit, owning discrete bass and treble controls.
The first section includes a transistor which solely turns into to blame for the needed frequency dimensioning features. The pertinent pots can be used for obtaining the most wanted bass and treble enlargement results from the circuit.
The CIRCUIT DIAGRAM is fairly easy and yet presents very cut and increase with the relevant bandwidths.
The second phase which makes use of the IC 741 is furthermore a bass, treble control circuit, in spite of this considering that an IC is utilized the outcomes become much improved than the earlier phase and once again the results may be discretely checked and used utilizing the relevant pots related to the circuit.
It may be obviously observed that the above mentioned two phase are linked in series.
This means the received music and speech improving capabilities from the individual units right now turn out to be deepen to much sharper and strengthened extents, but the information still can be manageable to the preferred any preferred limits making use of the four pots connected with the individual levels.
The above units might be fully optimized to get audio outputs getting extreme and heavy bass results or the outcomes might be trimmed to emphasize extreme “chilling” treble effects from the outputs.
Two of the above circuit assemblies could be constructed individually to make the final home theater system circuit, meaning you may lastly have eigt pots to control for attaining any wanted levels of engineered sound levels.
The above units have to be increased although, before the outcomes could be truly appreciated by means of the appropriate woofers and tweeter units.
If you by now own or plan to select a ready made amplifier, then the above units may be basically launched in between the audio source and the amplifier input, or if you can be a total electronic freak, you might want to make the increased section also all by you.
A stereo amplifier circuit design is demonstrated below, one of the channels is employed for driving the woofers and the other one is employed for inducing the tweeters.
A number of modules talked about in the above part will have to developed and linked to the presented stereo amplifier circuit for finishing the offered home theater circuit design.
Parts List
R1, R2, R3, R4, R5, R9 = 2K2,
R6, R7, R8 R10, R11, R12, R13 = 10K,
VR1, VR2, VR3, VR4 = 100K, LINEAR POTS,
C1 = 0.1uF,
C2, C3 = 0.022uF,
C4, C10, C5, C11 = 1uF, non polar,
C6, C7 = 0.033uF,
C8, C9 = 0.0033uF,
T1 = BC547B,
IC1 = 741