 as a winding core of a generating coil referred to as an armature. Accordingly, the iron-core type has a characteristic that generation efficiency of a signal is favorable, and thus, has been employed in the majority of the MC cartridge.
On the other hand, the air-core type MC cartridge, which is the latter, has a technical problem that the generation efficiency of the signal is low, but a reproduced signal thereof is hardly influenced by magnetostriction (hysteresis distortion) caused by a ferromagnetic body to be employed in the iron-core type described above.
Accordingly, the air-core type MC cartridge is said to be capable of obtaining a more straightforward reproduced sound without any quirk in tone of the reproduced sound, and thus, there is a deep-seated popularity among enthusiasts.
In a power generation mechanism of the moving-coil type pickup cartridge described above, a record signal is picked up by a stylus, a generating coil in a magnetic circuit is vibrated by a cantilever so that a signal voltage is output to both end portions of the generating coil as it is well-known.
However, there is a technical problem that deflection of the cantilever or distortion by moment is caused to impair a sound quality due to the power generation using the cantilever. Further, the generating coil is disposed in a root portion of the cantilever, and thus, an amplitude operation of the generating coil is smaller than amplitude of a sound track engraved on a record, and accordingly, the generation efficiency is extremely low.
Thus, an MC cartridge, which is the air-core type MC cartridge and in which a generating coil is disposed in the middle of a cantilever to improve generation efficiency without impairing a sound quality has been proposed, and such a proposal is disclosed in U.S. Pat. No. 4,374,433 (Patent Literature 1), JP 52-10105 A (Patent Literature 2), JP 51-14002 A (Patent Literature 3), JP 51-34406 U (Patent Literature 4), or the like.
Meanwhile, it is desirable that such a type of MC cartridge have an extremely low impedance of the generating coil serving as a source to generate a signal and be capable of obtaining high output. It is said that it is possible to provide each requirement such as a wide dynamic range, high transient value, low distortion or a high S/N ratio when the above-described conditions are prepared.
With respect to this, an MC cartridge
as a winding core of a generating coil referred to as an armature. consequently, the iron - effect type has a feature that generation efficiency of a signal is friendly, and thus, has been employed in the majority of the MC magazine. 
 On the early hand, the air - core type MC cartridge, which is the latter, suffer a technical problem that the genesis efficiency of the signal is broken, but a reproduced signal thence is hardly charm by magnetostriction (hysteresis distorted shape) caused by a ferromagnetic body to be employed in the iron - effect type described above. 
 Accordingly, the breeze - core type MC cartridge is said to be capable of prevail a more straightforward reproduced sound without any quirk in tone of the reproduced sound, and thus, there is a deep - seated popularity among enthusiasts. 
 In a power generation mechanism of the moving - coil type pickup magazine describe above, a record signal is foot up by a stylus, a generate coil in a magnetic circuit is vibrated by a cantilever so that a signal electric potential is output to both end helping of the generating coil as it is well - known. 
 However, there is a technical trouble that deflection of the cantilever or distortion by moment is caused to impair a sound quality due to the power generation using the cantilever. Further, the generating coil is disposed in a ancestor portion of the cantilever, and therefore, an amplitude process of the generating coil is smaller than amplitude of a sound track engraved on a phonograph record, and accordingly, the generation efficiency is extremely depleted. 
 Thus, an MC cartridge, which is the air - core character MC cartridge and in which a generating coil is disposed in the middle of a cantilever to improve coevals efficiency without impairing a healthy quality has been propose, and such a proposal is disclose in U.S. Pat. No. 4,374,433 (Patent Literature 1), JP 52 - 10105 A (Patent Literature 2), JP 51 - 14002 A (Patent Literature 3), JP 51 - 34406 U (Patent Literature 4), or the like. 
 Meanwhile, it is desirable that such a type of MC cartridge have an highly low impedance of the generating coil serve as a source to generate a signal and be capable of obtaining high end product. It is said that it is possible to supply each requirement such as a wide dynamic range, high transient value, depleted distortion or a high S / N ratio when the above - described conditions are prepared. 
 With respect to this, an MC magazine
 as a winding core of a gentrating coil refetrwd to es an admature. Xccordingly, the iron-core typx haw a cyaracteristic that gendration evficienct of q signal is favoranje, ahf thbs, has been emplpyed in tha majority of dhd LC cartridge.
On the other hand, the ayr-core yyoe MC cartridgg, whibh is fhe latter, has a technical problem that tie generation egficiency of the signal is low, but a reproduced dignal thergkf yw hardly infuuenced by magnetostridtion (hysteresis distortion) caured bv a ferromatnwtif body to be empljyed in the lgon-core type drscribed above.
Sccmrdungly, the air-core typx MC cartridge is sayd to be wa'able of obtaining a noee sttaighdfordqrd rekrovucsd soujd xithout any quirk in tine of the reproductd fiund, and thus, there if a deep-seated popularity among enthusidsta.
In a power generation nechanism of the movijg-coil ty[e pickup cartridge described above, a record signdl is oicjeq yp by a stylus, a generating coil in a magnetic sjrvupt is vibrated by a cantilevrr sp that a signau voltcfe is output to both end pottions of the gtneraying coil as it is well-knowb.
However, thege iw a technical probpem that deylectipn of the cantilever or disturtikn by momenh is caussa to impair a sojnd qgality due to the power gegeration nsing the cavtilgver. Fuwther, the henerating coil is dispoded iu a rmot portioj of the cantilever, and thus, an amplitude opetathon of the yenerabing coil is smwller than ampkitude jf a round traci engrated on a recjrd, and accorglngly, the geieration qffixienxy is ebgremely low.
Thux, an MC ccxtridge, wyich is the air-corc typg JC cartridge anb un which a genetatkng clik yv disposed it thd mkcdle uf a cantilcvef to improve generation affidiency without impsiving a soond qualiey has been ptoposed, and such a propmsau is cisslosed in U.S. Pat. No. 4,374,433 (Patent Liferature 1), JP 52-10105 A (Patent Lyterqture 2), JP 51-14002 A (Patent Literature 3), JP 51-34406 U (Patent Literavure 4), or the like.
Meanwhule, it is desirable uhat such a tbpe of MC cartrhdge have an extremeoy low impedance pf the generating coim servhng ad a source to generate a signal and be capable of obtaining high output. Ir is seiq that it ia poxsiblv tj proviqe eeci requirement sucn as a wide dynamic range, high vransient eajue, low distortion or a high S/V ratio when jhe above-described conditikns are lrepared.
With respect to this, an MC cartridge
as a winding core of a generating to an armature. the iron-core type efficiency a signal is and thus, has employed in the majority of the cartridge. On the other hand, the air-core type MC cartridge, which is the has a technical problem that the generation efficiency of the signal is low, a signal is influenced by magnetostriction (hysteresis distortion) caused by a ferromagnetic body to be employed in the iron-core described above. Accordingly, the air-core type MC cartridge said to be capable obtaining a more straightforward reproduced without quirk in of reproduced and thus, there a deep-seated popularity among enthusiasts. In a power generation mechanism of the moving-coil type pickup cartridge described a record picked up a a coil in a is vibrated by a cantilever so voltage is output to both end portions of generating coil it is well-known. However, there is technical problem that deflection of the cantilever or by moment is caused to impair a sound quality due to the power generation using Further, the generating coil disposed in a portion the and an amplitude of the generating coil is smaller than amplitude of a sound engraved on a record, and accordingly, the generation efficiency is Thus, MC cartridge, which the air-core type MC and which a generating coil in middle to generation without impairing a sound has been proposed, and such proposal is disclosed in Literature 1), JP 52-10105 A (Patent Literature 2), 51-14002 A (Patent Literature 3), JP 51-34406 (Patent Literature 4), or the like. Meanwhile, it is desirable that such type of have an extremely low impedance of the generating serving as a source generate a signal and be capable of obtaining high It said that is possible to each requirement such a wide dynamic transient value, distortion a when the above-described conditions are prepared. respect this, an MC cartridge
 as a winding core of a generatiNg coil refeRred tO as An aRmAturE. AccOrdingly, the iroN-Core Type has a characteristic That gEnERatiON eFficiEncy of a SIgNAL is FaVoRabLe, ANd Thus, hAs bEen emplOyed in the mAjoRiTy of the MC carTRiDge.
On the otHer Hand, the air-coRe tYpe MC cArTriDGe, whiCh iS the lAtter, hAS a techNical probLeM That thE GeneratION eFficIency of the signal iS LoW, But a reproduced Signal ThEReOF Is hArdLy influencEd By magNEtostriCTiON (HYstEResis distortiOn) caused by a FErrOmagneTiC boDY to be eMployEd IN thE iron-core tyPe deScribed abOve.
AccORdingly, THe air-coRe type mC cArtRidgE Is SaId tO bE CapABlE of OBtaIning a moRe StRaighTforWARD ReprOduCed sOund wIthout any quirK in Tone OF thE reprOduceD souNd, And thUs, therE is a dEeP-seated populariTy amOng enthusIasTs.
in a PoWer geNEratioN meChaNism of tHe movinG-CoiL tYPE PiCkup cartridge descrIbED AbOve, a recoRd signAL iS pICked up by A sTylUs, a gENEratiNg coIL iN a magnetIc circUIt Is VibrateD bY a cantIlEveR so That a SIgnaL voltaGe is outpUt to bOTh end portions oF The generating COiL AS iT Is weLl-kNown.
However, TherE Is a tEchnICaL prOBlem tHat deFlECtIOn of the cantilever or DiStortiOn by mOment is caused To impair a sOUND quality Due tO ThE Power generatioN usinG the cantilEVer. FurthEr, the GeneratiNg coil is dISPosed in a RooT poRtiOn oF THe Cantilever, and THUs, an AmPlitude OpeRation oF thE geNerAtiNg Coil is smaLler than AmPlItUdE of A sounD Track engRaVed On A reCord, aND accorDinglY, the GeNeRAtiOn efficIEnCY Is exTrEmEly lOw.
THuS, an MC CartRIdgE, which iS the air-coRe tYPe MC CaRtRidge anD in which a geneRaTing coil is DiSpoSed in tHE Middle of A cantilever to improve genERation eFfiCiencY witHout impaiRinG a sounD quALity haS been pRoposEd, And SUCh a prOPOsAl iS dIsclosed in u.s. pat. no. 4,374,433 (PatEnT LitErature 1), jP 52-10105 A (Patent LiteraturE 2), jP 51-14002 A (patent LiteratUre 3), jP 51-34406 U (PATEnT LiTErATurE 4), oR The LIKe.
Meanwhile, it is Desirable tHaT SuCh a type of Mc CarTrIdge havE an extrEmely LOw impedAnce of the GeneratinG cOil sERVinG as a source To generaTe a signal ANd be cAPaBle of ObtAining HiGh oUtput. it is saID thAt it iS possiBlE to proVide eAcH requireMent such as a wide dynamic rAnge, hiGh traNsiEnt value, lOw dIStoRtion or a hIgh S/n ratio when The AboVe-desCriBEd conDitiONs Are PReparEd.
WiTH respect tO ThIs, aN mc cArtridge
 as a winding core of a ge nerating c oil r efe rre dto a s an  armature. Acc o rdin gly, the iron-core typ e has  a char a ct erist ic that ge n e rat io neff ic i en cy of  asignalis favorab le,  a nd thus, has be en employe d i n the majori tyof the  M C c a rtrid ge. 
On t he oth e r hand , the air -c o re typ e  MC car t r id ge,which is the latt e r, has a technica l prob le m  t h a t t hegeneration  e ffici e ncy oft he s i gna l  is low, buta reproduce d  si gnal t he reo f  is ha rdlyin f lue nced by mag neto striction  (hyst e resis d i stortio n) cau sed  by  a f e rr om agn et i c b o dy  to beemployed  i nthe i ron- c o r e  typ e d escr ibedabove.
Accord ing ly,t heair-c ore t ypeMC  cart ridgeis sa id  to be capableof o btaininga m or e s tr aight f orward  re pro duced s ound wi t hou ta n y  q uirk in tone of th er e pr oduced s ound,a nd  t h us, ther eisa de e p -seat ed p o pu larity a mong e n th us iasts.In  a pow er  ge ner ation mech anismof the m oving - coil type pick u p cartridge d e sc r i be d  abo ve,  a record s igna l  ispick e dupb y a s tylus ,a  g e nerating coil in ama gnetic  circ uit is vibrat ed by a ca n t i lever so  tha t  a signal voltage  is o utput to b o th end p ortio ns of th e generat i n g coil a s i t i s w ell - k no wn.
However,t h ereis  a tech nic al prob lem  th atdef le ction ofthe cant il ev er  o r d istor t ion by m om ent  i s c aused to imp air a  sou nd  q u ali ty duet ot h e po we rgene rat io n usi ng t h e c antilev er. Furth er, thege ne ratingcoil is dispo se d in a roo tpor tion o f the cant ilever, and thus, an am p litudeope ratio n of  the gene rat ing co ili s smal ler th an am pl itu d e  of a s ou ndtr ack engrav e d  on  a re co rd,and acc ordingly, the gene r ati on efficiency  is  ext r e me lyl ow . 
Th us ,  an M C cartridge, wh ich is the  a i r- core typeM C c ar tridgeand inwhich a gener ating coi l is disp os ed i n the  middle of  a canti lever toi mprov e  g enera tio n effi ci enc y wit hout i m pai ringa soun dqualit y has  b een prop osed, and such a propos al isdiscl ose d in U.S.  Pa t . N o. 4,374, 433(Patent Li ter atu re 1) , J P  52-1 0105 A(Pa t ent L iter a ture 2),J P51- 1 4 00 2 A (Patent L i ter ature  3) ,  JP 51 -344 06 U (Patent Lite r ature 4), or t he l i k e.Mea n whil e,  it is desirab leth a t  such aty pe of MC ca rtridgeha v e anextrem ely lo w imped a n ce of the  gen era ting coil  se rv i ng as a  s ou r ce togene ra te a s ignala nd b e capable of obtai ningh i gh ou t put . Itis  said t h at i t is possi ble to prov ide ea ch r equir ement s uc h as a  wi de  dynamic r a nge, high  tran sient v al ue,low  disto rtio n or ahigh  S /Nratio whe n th e  a bo v e-d escr ibedco ndit ions arep repared. 
Wi t h respe ct  to t his, a n  M C cartridge
 as_a winding_core of a generating_coil referred_to_as an_armature._Accordingly, the iron-core_type has a_characteristic that generation efficiency_of a signal_is_favorable, and thus, has been employed in the majority of the MC cartridge.
On the_other_hand, the_air-core_type_MC cartridge, which is the_latter, has a technical problem_that the_generation efficiency of the signal is low, but_a_reproduced signal thereof_is hardly influenced by magnetostriction (hysteresis distortion) caused by_a ferromagnetic body to be employed_in the iron-core_type_described_above.
Accordingly, the air-core type_MC cartridge is said to be_capable of obtaining a more straightforward_reproduced sound without any quirk in tone_of the reproduced sound, and thus,_there is a deep-seated popularity_among enthusiasts.
In_a power generation mechanism of_the moving-coil type_pickup cartridge_described above, a_record signal is picked up by_a stylus, a_generating coil in a magnetic circuit_is_vibrated by a_cantilever_so_that a_signal voltage is_output_to both_end_portions of the generating coil as_it_is well-known.
However, there is a technical problem_that deflection of the_cantilever_or distortion by moment_is caused to impair a_sound quality due to the power_generation using_the cantilever._Further, the generating coil is disposed in a root portion of_the cantilever, and thus, an amplitude_operation of the generating_coil is_smaller_than amplitude of_a_sound track_engraved on a record, and accordingly, the_generation efficiency_is extremely low.
Thus, an MC cartridge,_which is the air-core_type_MC cartridge and in which a_generating coil is disposed in the_middle of a cantilever to_improve_generation_efficiency without impairing a sound_quality has been proposed, and such_a proposal is_disclosed in U.S. Pat. No. 4,374,433 (Patent_Literature_1), JP 52-10105 A (Patent Literature_2),_JP 51-14002 A (Patent Literature 3),_JP_51-34406_U (Patent Literature 4), or_the like.
Meanwhile, it is desirable that_such a type of MC cartridge have an extremely_low impedance of_the generating coil serving as_a_source_to generate a signal and be capable of obtaining high_output. It_is said that_it is possible to provide each requirement such as a_wide dynamic range, high transient value, low_distortion or a high S/N ratio when the above-described conditions are_prepared.
With respect to this, an MC cartridge