CN104869504A - LC sound box frequency divider - Google Patents
LC sound box frequency divider Download PDFInfo
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- CN104869504A CN104869504A CN201510127924.2A CN201510127924A CN104869504A CN 104869504 A CN104869504 A CN 104869504A CN 201510127924 A CN201510127924 A CN 201510127924A CN 104869504 A CN104869504 A CN 104869504A
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Abstract
The invention discloses an LC sound box frequency divider. The LC sound box frequency divider includes one inductance coil L provided with at least one tap, at least one capacitor C, and at least two loudspeakers; one pole of each capacitor C is connected with one tap in the inductance coil L, and the other pole of the capacitor C is connected with one loudspeaker; and the output end of the inductance coil L is connected with another loudspeaker. The LC sound box frequency divider of the invention is composed of the inductance coil L provided with the taps, the capacitors and the loudspeakers with corresponding power; the signal input line of each loudspeaker passes through the same inductance coil L, namely, the inductance coil L is multiplexed for many times; in sound filtering, no matter how many frequency bands sound signals are divided into, input signals only pass through one inductance coil L, and the electric energy of the inductance coil L is almost fully utilized, and has no loss, the loss of power signals can be nearly avoided, and slight sound signal loss is just brought about, and sound distortion is low, and quality of reproduced sound is high.
Description
Technical field
The present invention relates to frequency divider technical field, be specifically related to a kind of LC loudspeaker enclosure divider.
Background technology
Voice signal can be divided into several frequency ranges by loudspeaker enclosure divider.As two-divider is made up of a high pass filter and a low pass filter exactly, three frequency division then turn increases a band pass filter, can certainly make four frequency divisions, five frequency divisions.Frequency divider is " brain " in audio amplifier, most important to the quality of tonequality.Existing loudspeaker enclosure divider, comprises the circuit (low frequency frequency dividing circuit) etc. of the circuit (high frequency frequency dividing circuit) connecting loudspeaker, the circuit (intermediate frequency frequency dividing circuit) connecting mediant trumpet, connection bass horn.In the circuit connecting loudspeaker: allow electric current first flow through capacitor, stop low frequency, allow high frequency pass through; Sometimes also can be in parallel with loudspeaker with a coil, allow coil produce negative voltage, this voltage is just in time a voltage compensation for loudspeaker.In connection bass horn circuit: electric current first flows through coil, such HFS is prevented from, and low-frequency range is passed through smoothly because coil does not have inhibition substantially, equally, bass horn is an in parallel capacitor, the voltage utilizing capacitor to produce a voltage when high frequency exactly to recover damage, reason is the same with loudspeaker end.And the circuit connecting mediant trumpet is similar with the circuit being connected bass horn.
As can be seen from above, the characteristic that frequency divider makes full use of capacitor and coil reaches frequency division.But coil and capacitor also consumes electric energy, so this flop frequency divider can lose certain sound in the frequency band hindered separately simultaneously.As the Chinese utility model patent that publication number is Authorization Notice No. CN2702567Y, disclose " a kind of sound box frequency divider with three frequency-division ", comprise high frequency frequency dividing circuit, intermediate frequency frequency dividing circuit and low frequency frequency dividing circuit, its medium-high frequency frequency dividing circuit comprises the electric capacity C1 be series on high frequency incoming line and the inductance L 1 being connected to output, intermediate frequency frequency dividing circuit comprises the electric capacity C2 be series on intermediate frequency incoming line, and the inductance L 2 be series between electric capacity C2 and mid frequency ludspeaker M, low frequency frequency dividing circuit comprises the inductance L 3 be series on low frequency incoming line and the electric capacity C3 being connected to output.The program eliminates the series resistance in intermediate frequency frequency dividing circuit, makes intermediate frequency network not waste too large electric energy, reduces phase distortion and production cost.But the program, in the frequency dividing circuit of every road, has all accessed inductance L, and inductance L consumes a part of electric energy: in high frequency frequency dividing circuit, in unnecessary in inductance L 1, low-frequency electrical energy direct losses; In intermediate frequency frequency dividing circuit, high and low frequency electric energy direct losses unnecessary in inductance L 2; And in low frequency frequency dividing circuit, unnecessary height, intermediate frequency electric energy direct losses.That is, the inductance added in frequency divider is more, and the electric energy of loss is more, and power signal loss is larger, and voice signal loss is also more serious, and audio distortions, reproduction tonequality are more bad.Particularly be connected in parallel on the inductance L 1 on circuit and electric capacity C3, not only wasted the power that should not waste, also directly destroy its load impedance and resistance pole characteristic, make sound more severe.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of structure is simple, cost is low, the LC loudspeaker enclosure divider that power signal loss less, audio distortions is little, tonequality is high.
For solving the problems of the technologies described above, the present invention adopts two kinds of technological means, as follows:
First descant loud speaker and all the other loud speakers all seal in inductance coil L, but descant loud speaker only accesses few coil of inductance coil L, as 1 circle, 2 circles, 3 circles etc.The technical scheme adopted is:
LC loudspeaker enclosure divider, comprise the inductance coil L being provided with at least 1 tap, at least 1 electric capacity C and at least 2 loud speaker, a tap in the one pole connection inductance coil L of each electric capacity C, another pole then connect a loud speaker, and the output of inductance coil L connects another loud speaker.This LC loudspeaker enclosure divider can make the tri-frequency divider, four-divider etc. of more than two-divider and two-divider.This LC loudspeaker enclosure divider is only with the loud speaker composition being provided with the inductance coil L of tap, electric capacity and corresponding power, in the signal input line road of every road loud speaker, all by same inductance coil L, inductance coil L by repeatedly multiplexing, when making Fractional-N frequency device, inductance coil is re-used N-1 time.The voltage of inductance coil L is almost fully utilized, not loss, and power signal is almost free of losses also, and voice signal loss is few, and audio distortions is little, reproduction tonequality is good.
Such scheme is preferred, and electric capacity C is electric capacity C2, and loud speaker is the second loud speaker and the 5th loud speaker, and inductance coil is provided with the second tap; The second tap in the one pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker, and the output of inductance coil L connects the 5th loud speaker.What the program realized is two divided-frequency, and namely high and low cent frequently.
Such scheme is preferred, also comprises electric capacity C3 and three loudspeakers, is provided with the 3rd tap between the second tap and the output of inductance coil L, and the tap T in a pole connection inductance coil L of electric capacity C3, another pole then connect three loudspeakers.What the program realized is three frequency division, and namely high, medium and low cent frequently.
Such scheme is preferred, also comprises electric capacity C1 and the first loud speaker, is provided with the first tap between the second tap and the input of inductance coil L, and the first tap in a pole connection inductance coil L of electric capacity C1, another pole then connect the first loud speaker.What the program realized is four frequency divisions, and namely superelevation, high, medium and low cent are frequently.
Such scheme is preferred, also comprises electric capacity C4 and the 4th loud speaker, is provided with the 4th tap between the 3rd tap and the output of inductance coil L, and the 4th tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.What the program realized is five frequency divisions, i.e. superelevation, high, medium and low, subwoofer frequency division.
Another technical scheme of the application is that descant loud speaker does not access in inductance coil L, and all the other loud speakers all seal in inductance coil L, and its technical scheme is:
LC loudspeaker enclosure divider, comprise the inductance coil L being provided with at least 1 tap, at least 2 electric capacity C and at least 3 loud speakers, one pole of one electric capacity C connects incoming line, another pole connects one loud speaker, arbitrary tap, another pole of the one pole connection inductance coil L of all the other each electric capacity C then connect all the other arbitrary loud speakers, and the output of inductance coil L connects a remaining loud speaker.In the signal input line road of this LC loudspeaker enclosure divider every road loud speaker, except the loud speaker of descant, all by same inductance coil L, inductance coil L by repeatedly multiplexing, when making Fractional-N frequency device, inductance coil is re-used N-2 time.
Such scheme is preferred, and 2 electric capacity C are electric capacity C1 and electric capacity C3, and loud speaker is the first loud speaker, three loudspeakers and the 5th loud speaker, and inductance coil is provided with the second tap; One pole of electric capacity C1 connects incoming line, another pole connects the first loud speaker, and a pole of electric capacity C3 connects second tap of inductance coil L, another pole then connects three loudspeakers, and the output of inductance coil L connects the 5th loud speaker.What the program realized is three frequency division, and namely high, medium and low cent frequently.
Such scheme is preferred, also comprises electric capacity C2 and the second loud speaker, is provided with the first tap between the second tap and the input of inductance coil L, and the first tap in a pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker.What the program realized is four frequency divisions, and namely superelevation, high, medium and low cent are frequently.
Such scheme is preferred, also comprises electric capacity C4 and the 4th loud speaker, is provided with the 3rd tap between the second tap and the output of inductance coil L, and the 3rd tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.What the program realized is five frequency divisions, i.e. superelevation, high, medium and low, subwoofer frequency division.
Such scheme is preferred, and series resistance R1 between electric capacity C1 and the second loud speaker, at the second loud speaker two ends parallel resistance R2.Resistance R1 plays the effect of current limliting, and resistance R2 plays the effect of shunting, high band is responded more smooth.
Compared with prior art, the present invention is only with the loud speaker composition being provided with the inductance coil L of tap, electric capacity and corresponding power, and in the signal input line road of every road loud speaker, all by same inductance coil L, namely inductance coil L is by repeatedly multiplexing.When making two-divider (high and low sound frequency divider), also complete high pass when inductance coil L completes low pass, inductance coil is re-used once; When making tri-frequency divider (high, medium and low sound frequency divider), refer to that high pitch loudspeaker does not seal in inductance coil L herein, the low pass that inductance coil and inductance coil L and electric capacity C3 form is delivered in the 5th loud speaker (i.e. woofer), the band that C3 exports is logical delivers to (i.e. Squawker) in three loudspeakers, inductance coil L and C3 constitutes low pass, and also to complete band logical, inductance coil L obtains multiplexing, and inductance coil is re-used once.The like, when making Fractional-N frequency device, inductance coil is re-used N-1 time (descant loud speaker and all the other loud speakers all seal in inductance coil L) or N-2 time (descant loud speaker does not access in inductance coil L, and all the other loud speakers all seal in inductance coil L).That is, when carrying out sound filtering, no matter make a few frequency division, input signal only passes through an inductance coil L, and the voltage of inductance coil L is almost fully utilized, not loss, power signal is almost free of losses also, and voice signal loss is few, and audio distortions is little, reproduction tonequality is good.In addition, its structure is simple, and prototype part is few, and cost is low, and efficiency is high, and whole frequency response is without obvious concavo-convex phenomenon.
Accompanying drawing explanation
Fig. 1 is the three frequency division electrical schematic diagram of embodiment 1;
Fig. 2 is five frequency division electrical schematic diagrams of embodiment 1;
Fig. 3 is the three frequency division electrical schematic diagram of embodiment 2;
Fig. 4 is five frequency division electrical schematic diagrams of embodiment 2;
Fig. 5 is three frequency division experiment test electrical schematic diagram of the present invention;
Fig. 6 is contrast test three frequency division electrical schematic diagram;
Fig. 7 is the high, medium and low filter curve figure that the test in Fig. 5 obtains;
Fig. 8 is the high, medium and low filter curve figure that the test in Fig. 6 obtains;
Fig. 9 is the low-pass filtering curve comparison figure in Fig. 7 and Fig. 8.
Embodiment
Embodiment 1
A kind of LC loudspeaker enclosure divider of the present invention, descant loud speaker and all the other loud speakers all seal in inductance coil L.It comprises the inductance coil L being provided with at least 1 tap, at least 1 electric capacity C and at least 2 loud speaker.The input of described inductance coil L connects incoming line one pole, a tap in the one pole connection inductance coil L of each electric capacity C, another pole then connect a loud speaker, the output of inductance coil L connects another loud speaker, and another of described loud speaker extremely all connects outlet line.
Time design two divided-frequency (high and low cent frequently), can set electric capacity C is C2, and loud speaker is the second loud speaker (high pitch loudspeaker) and the 5th loud speaker (woofer), and inductance coil is provided with the second tap; The second tap in the one pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker, and the output of inductance coil L connects the 5th loud speaker.In can certainly making, bass frequency division etc.
Time design three frequency division (high, medium and low cent frequently), as shown in Figure 1, on the basis of two divided-frequency, increase electric capacity C3 and three loudspeakers (Squawker), between the second tap and the output of inductance coil L, be provided with the 3rd tap, the tap T in a pole connection inductance coil L of electric capacity C3, another pole then connect three loudspeakers.High and low sound, subwoofer frequency division etc. can certainly be made.In order to make high band respond more smooth, can between electric capacity C2 and the second loud speaker (high pitch loudspeaker) series resistance R1, at the second loud speaker two ends parallel resistance R2.
When designing four frequency divisions (superelevation, high, medium and low cent are frequently), on the basis of three frequency division, increase electric capacity C1 and the first loud speaker (super high pitch loudspeaker), between the second tap and the input of inductance coil L, be provided with the first tap, the first tap in a pole connection inductance coil L of electric capacity C1, another pole then connect the first loud speaker.Superelevation, high and low, subwoofer frequency division etc. can certainly be made.
When designing five frequency divisions (superelevation, high, medium and low, subwoofer frequency division), as shown in Figure 2, on the basis of three frequency division, increase electric capacity C4 and the 4th loud speaker, between the 3rd tap and the output of inductance coil L, be provided with the 4th tap, the 4th tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.In this electrical schematic diagram, the first loud speaker is super high pitch loudspeaker, and the second loud speaker is high pitch loudspeaker, and three loudspeakers is Squawker, and the 4th loud speaker is woofer, and the 5th loud speaker is super woofer.Certainly, as required, more frequency division can also be done.And the design attitude of the tap of inductance coil, according to power and the actual needs design of loud speaker.
Embodiment 2
A kind of LC loudspeaker enclosure divider of the present invention, descant loud speaker does not access in inductance coil L.It comprises the inductance coil L being provided with at least 1 tap, at least 2 electric capacity C and at least 3 loud speakers, one pole of one electric capacity C connects incoming line, another pole connects one loud speaker, arbitrary tap, another pole of the one pole connection inductance coil L of all the other each electric capacity C then connect all the other arbitrary loud speakers, and the output of inductance coil L connects a remaining loud speaker.
As shown in Figure 3, time design three frequency division (high, medium and low cent frequently), can set 2 electric capacity C is electric capacity C1 and electric capacity C3, loud speaker is the first loud speaker (high pitch loudspeaker), three loudspeakers (Squawker) and the 5th loud speaker (woofer), and inductance coil is provided with the second tap; One pole of electric capacity C1 connects incoming line, another pole connects the first loud speaker, and a pole of electric capacity C3 connects second tap of inductance coil L, another pole then connects three loudspeakers, and the output of inductance coil L connects the 5th loud speaker.In order to make high band respond more smooth, can between electric capacity C1 and the second loud speaker (high pitch loudspeaker) series resistance R1, at the second loud speaker two ends parallel resistance R2.
When designing four frequency divisions (superelevation, high, medium and low cent are frequently), can on the basis of three frequency division, increase electric capacity C2 and the second loud speaker, between the second tap and the input of inductance coil L, be provided with the first tap, the first tap in a pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker.In this design, the first loud speaker is super high pitch loudspeaker, and the second loud speaker is high pitch loudspeaker, and three loudspeakers is Squawker, and the 5th loud speaker is woofer.
As shown in Figure 4, when designing five frequency divisions (high, medium and low cent frequently), can on the basis of three frequency division, increase electric capacity C4 and the 4th loud speaker, between the second tap and the output of inductance coil L, be provided with the 3rd tap, the 3rd tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.First loud speaker is super high pitch loudspeaker, and the second loud speaker is high pitch loudspeaker, and three loudspeakers is Squawker, and the 4th loud speaker is woofer, and the 5th loud speaker is super woofer.
Fig. 5 is three frequency division experiment test electrical schematic diagram (bringing onto load) of the present invention, and high pass logical to low pass, band is tested respectively, and high pass logical to low pass, band is tested respectively, this tests equipment used: 1, special CD laser disc tested by audio amplifier: Super Audio Check, 2, CD player: Sweden COPLAND CDA288,3, power amplifier: Denmark GRYPHON Tabu century, 4, universal meter: Shanghai Star LF500 type; CD laser disc puts into CD player, and as the input signal source of this frequency divider after CD player and power amplifier, universal meter is connected with the two ends of loud speaker.3 curves of test record and high pass filter logical at output table 1,2,3 low passes obtained, band, as shown in Figure 7.In Figure 5, be three frequency division: high, medium and low frequency division.In the circuit diagram of Fig. 5, circuit input end connects first tap of inductance coil L, left end head, another pole of the one pole connection inductance coil L of electric capacity C2 then connect high pitch loudspeaker (its impedance is 4 Ω), one pole of electric capacity C1 connects the second tap, another pole connects Squawker (its impedance is 4 Ω), and the input of woofer (its impedance is 4 Ω) connects the right end of inductance coil L, output and is then connected to circuit output end together with the output of the output of high pitch loudspeaker, Squawker.Wherein the inductance value of inductance coil L is 2.422MH, and the inductance value of the first tap is 0.002MH, and the inductance value namely sealing in high pitch loudspeaker is 0.002MH; The inductance value of the second tap is 0.292MH, and the inductance value namely sealing in Squawker is 0.29MH; The inductance value sealing in woofer then for 2.42MH electric capacity C1 by three be respectively 40uF, 15uF, 12uF Capacitance parallel connection form, electric capacity C2 is 3.7uF.
Table 1
| Frequency (Hz) | Frequency response db (Relative Level) |
| 8k | -28 |
| 4k | -26 |
[0042]
| 3k | -22.8 |
| 2k | -15 |
| 1k | -9.8 |
| 500 | -6.4 |
| 400 | -5 |
| 250 | -2.5 |
| 125 | -0.2 |
| 63 | 0 |
| 31.5 | -0.8 |
| 20 | -1 |
Table 2
| Frequency (Hz) | Frequency response db (Relative Level) |
| 20k | -4.5 |
| 18k | -4.5 |
| 16k | -4.5 |
| 12.5k | -4.5 |
| 10k | -4.3 |
| 8k | -4.1 |
| 4k | -3.2 |
| 3k | -2.8 |
| 2k | -2.3 |
| 1k | -1.7 |
| 500 | -4.3 |
| 400 | -5.8 |
| 250 | -8.5 |
| 125 | -9.4 |
| 63 | -7.2 |
| 31.5 | -11.8 |
| 20 | -27 |
Table 3
| Frequency (Hz) | Frequency response db (Relative Level) |
| 20k | 1.3 |
| 18k | 1.3 |
| 16k | 1.3 |
| 12.5k | 0.8 |
| 10k | -0.2 |
| 8k | -1.8 |
| 4k | -8 |
| 3k | -8.8 |
| 2k | -10.8 |
| 1k | -13 |
| 500 | -28 |
[0047] fig. 6 is contrast test three frequency division electrical schematic diagram (bringing onto load), and high pass logical to low pass, band is tested respectively, and high pass logical to low pass, band is tested respectively, this tests equipment used: 1, special CD laser disc tested by audio amplifier: Super Audio Check, 2, CD player: Sweden COPLAND CDA288,3, power amplifier: Denmark GRYPHON Tabu century, 4, universal meter: Shanghai Star LF500 type; CD laser disc puts into CD player, and as the input signal source of this frequency divider after CD player and power amplifier, universal meter is connected with the two ends of loud speaker.Test record shows 3 curves of the logical and high pass filter of low pass that 1-1,1-2,1-3 obtain, band in output, as shown in Figure 8.In figure 6, be three frequency division: high, medium and low.In contrast test three frequency division electrograph, comprise the trebling circuit figure be arranged in parallel, middle sound circuit diagram and low sound circuit diagram, wherein trebling circuit figure is composed in series by the electric capacity C2 of 3.7uF and high pitch loudspeaker (its impedance is 4 Ω).Middle sound circuit diagram is composed in series by electric capacity C1, inductance coil L2, Squawker (its impedance is 4 Ω), wherein electric capacity C1 by 40,15, the Capacitance parallel connection of 12uF forms, the inductance value of inductance coil L2 is 0.29MH.Bass circuit is composed in series by inductance coil L1, high pitch loudspeaker (its impedance is 4 Ω), and the inductance value of inductance coil L1 is 2.42MH.
Fig. 6 is contrast test three frequency division electrical schematic diagram, test record shows 1-1, table 2-2 in output, table 3-3 obtains respectively low pass, band is logical and 3 curves of high pass filter, as shown in Figure 8.
Table 1-1
| Frequency (Hz) | Frequency response db (Relative Level) |
| 16k | -28 |
| 12.5k | -26 |
| 10k | -25 |
| 8k | -24 |
| 4k | -18 |
| 3k | -14 |
| 2k | -12 |
| 1k | -10 |
| 500 | -7.5 |
| 400 | -6 |
| 250 | -3 |
| 125 | -0.2 |
| 63 | 0 |
| 31.5 | -0.8 |
| 20 | -0.6 |
Table 1-2
| Frequency (Hz) | Frequency response db (Relative Level) |
| 20k | -6.3 |
| 18k | -6 |
| 16k | -5.7 |
| 12.5k | -5.1 |
[0053]
| 10k | -4.6 |
| 8k | -4 |
| 4k | -2.6 |
| 3k | -2 |
| 2k | -0.8 |
| 1k | 0.8 |
| 500 | -1.4 |
| 400 | -3.3 |
| 250 | -7.4 |
| 125 | -9.2 |
| 63 | -7 |
| 31.5 | -11.9 |
| 20 | -27 |
Table 1-3
| Frequency (Hz) | Frequency response db (Relative Level) |
| 20k | 1.3 |
| 18k | 1.3 |
| 16k | 1.3 |
| 12.5k | 0.7 |
| 10k | -0.3 |
| 8k | -1.7 |
| 4k | -7.8 |
| 3k | -8.9 |
| 2k | -10.3 |
| 1k | -17 |
| 500 | -28 |
In the solution of the present invention, load is in parallel without any reactance component, thus can not change to load impedance, damping characteristic, so sound reproduction quality can not produce become bad, again and the decay indices of second order can be reached more than in the design of firstorder circuit, as shown in Figure 9, low pass the present invention when 3KHZ can reach the attenuation of 23db, and the scheme (traditional scheme) of contrast can only reach the decay of 14db.
Claims (10)
1.LC loudspeaker enclosure divider, it is characterized in that: comprise the inductance coil L being provided with at least 1 tap, at least 1 electric capacity C and at least 2 loud speaker, a tap in the one pole connection inductance coil L of each electric capacity C, another pole then connect a loud speaker, and the output of inductance coil L connects another loud speaker.
2. LC loudspeaker enclosure divider according to claim 1, is characterized in that: electric capacity C is electric capacity C2, and loud speaker is the second loud speaker and the 5th loud speaker, and inductance coil is provided with the second tap; The second tap in the one pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker, and the output of inductance coil L connects the 5th loud speaker.
3. LC loudspeaker enclosure divider according to claim 2, it is characterized in that: also comprise electric capacity C3 and three loudspeakers, between the second tap and the output of inductance coil L, be provided with the 3rd tap, the tap T in a pole connection inductance coil L of electric capacity C3, another pole then connect three loudspeakers.
4. LC loudspeaker enclosure divider according to claim 3, it is characterized in that: also comprise electric capacity C1 and the first loud speaker, between the second tap and the input of inductance coil L, be provided with the first tap, the first tap in a pole connection inductance coil L of electric capacity C1, another pole then connect the first loud speaker.
5. LC loudspeaker enclosure divider according to claim 4, it is characterized in that: also comprise electric capacity C4 and the 4th loud speaker, between the 3rd tap and the output of inductance coil L, be provided with the 4th tap, the 4th tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.
6.LC loudspeaker enclosure divider, it is characterized in that: comprise the inductance coil L being provided with at least 1 tap, at least 2 electric capacity C and at least 3 loud speakers, one pole of one electric capacity C connects incoming line, another pole connects one loud speaker, arbitrary tap, another pole of the one pole connection inductance coil L of all the other each electric capacity C then connect all the other arbitrary loud speakers, and the output of inductance coil L connects a remaining loud speaker.
7. LC loudspeaker enclosure divider according to claim 6, is characterized in that: 2 electric capacity C are electric capacity C1 and electric capacity C3, and loud speaker is the first loud speaker, three loudspeakers and the 5th loud speaker, and inductance coil is provided with the second tap; One pole of electric capacity C1 connects incoming line, another pole connects the first loud speaker, and a pole of electric capacity C3 connects second tap of inductance coil L, another pole then connects three loudspeakers, and the output of inductance coil L connects the 5th loud speaker.
8. LC loudspeaker enclosure divider according to claim 7, it is characterized in that: also comprise electric capacity C2 and the second loud speaker, between the second tap and the input of inductance coil L, be provided with the first tap, the first tap in a pole connection inductance coil L of electric capacity C2, another pole then connect the second loud speaker.
9. LC loudspeaker enclosure divider according to claim 8, it is characterized in that: also comprise electric capacity C4 and the 4th loud speaker, between the second tap and the output of inductance coil L, be provided with the 3rd tap, the 3rd tap in a pole connection inductance coil L of electric capacity C4, another pole then connect the 4th loud speaker.
10. LC loudspeaker enclosure divider according to claim 7, is characterized in that: series resistance R1 between electric capacity C1 and the second loud speaker, at the second loud speaker two ends parallel resistance R2.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108932939A (en) * | 2017-05-26 | 2018-12-04 | 南京大学 | It is a kind of to have the slim sound absorption structure and its design method for adjusting noise for low frequency |
| RU2792582C1 (en) * | 2022-11-16 | 2023-03-22 | Александр Петрович Каратунов | Speaker system device |
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| CN108932939A (en) * | 2017-05-26 | 2018-12-04 | 南京大学 | It is a kind of to have the slim sound absorption structure and its design method for adjusting noise for low frequency |
| RU2792582C1 (en) * | 2022-11-16 | 2023-03-22 | Александр Петрович Каратунов | Speaker system device |
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