Gitarové fórum A.D. 9.1.2004

Zdravim.
O com su vlasne aktivne snimace typu EMG.
Podla mna to nieje nic ine ako bezny humbukac s jednoduchym prampom a spolu je to zaliate v jednom puzdre.
Alebo je v tom nieco viac....?

Ak nie chcel by som si do gitary urobit Prerobit bezne snimace na aktivky. NEma nikdo daku overenejsiu schemu takeho preampu, netusite ci EMGcka puzivaju Oztka alebo dake FETy?

http://music-electronics-forum.com/showthread.php?t=10039&highlight=emg
http://music-electronics-forum.com/showthread.php?t=9095&highlight=emg

EMG 81:

Magnet: Ceramic 56x3x13mm
Wire: 0,06mm (PE)
Core: 54x3x12,5mm (silicon steel?), solid steel.
Coil: 4,18KOhm (one coil), wax potted, aprox. 5500-6000 turns, h=7,5mm
Bobbin: 64x13x9mm (or with "tube legs" 12,2mm)
The coils are attached to the preamp in parallel, with the series connection to ground, and the other two ends to the (+) and (-) of the op amp.

Ohladom konstrukcie low impedance snimacov:

http://music-electronics-forum.com/showthread.php?t=3737&highlight=emg

http://music-electronics-forum.com/showthread.php?t=2145&highlight=emg

http://music-electronics-forum.com/showthread.php?t=5447&highlight=emg

http://music-electronics-forum.com/showthread.php?t=5291&highlight=emg

Ooo
Diky moc hlavne ta schema potesila, a popis mechanickych parametrov 81ky...

Este sa chcem spytat ze aky je vlasne rozdiel medzi EMG 81 a 85kou.
85 ka je urcena na uchytenie ku krku, 81 ka ku kobilke
Aky je rozdiel voci 81ke? Sa mi zda ze oba snimace maju inu farbu zvuku a nieje to len ich umiestenim. Je to napr sfazovanim oboch cievok v humbuckri alebo v com?

Tiez ma zaujima tato otazka aj pri beznych basivakoch, ze aky je rozdiel medzi krkovim a kobilkovym....

Ja mam Jacksonku. Mam tam dva otvorene humbukace (dake noname original od kupy gitary) A na kazdej cievke zumbukera su take dierky akoby znacky. Na kazdej cievke po tri.  Na kazdom snimaci na jednej strane 1 podka, a druhej 2. Na jednom snimaci je ta dvojdierkova strana oboch cievok pri sebe. Ale na druhej jedna cievka otocena akoby naopak. To znamena ze cievky su v protifaze? Co vlasne tie bodky (dierky) zanmenaju? Pre predstavu tie tierky su nieco taketo: http://www.guitargrave.com/jackson/images/280-3072-815_c.jpg

EMG-81

    * Logo Color
    * Resonant Frequency (kHz)
    * RMS Output Voltage
    * Peak Output Voltage
    * Output Noise (dBV)
    * Output Impedance (Kohm)
    * Current @ 9V (Microamps)
    * Battery Life (Hours)

   

    * Silver
    * 2.25
    * 1.25
    * 1.75
    * -91
    * 10
    * 80
    * 3000

EMG-85

    * Logo Color
    * Resonant Frequency (kHz)
    * RMS Output Voltage
    * Peak Output Voltage
    * Output Noise (dBV)
    * Output Impedance (Kohm)
    * Current @ 9V (Microamps)
    * Battery Life (Hours)

   

    * Gold
    * 2.55
    * 1.25
    * 1.75
    * -89
    * 10
    * 80
    * 3000

EMG-81

The EMG-81 is a high output pickup designed especially for the lead guitarist. It was actually developed in 1979 along with the EMG-58. Like most EMG's, it wasn't heavily advertised until 1981. The EMG-81 has the familiar U-shaped humbucking structure but replaces the pole pieces with steel bars and a smaller ceramic magnet. The EMG-81 is at its best for high volume overdrive. It has become the choice for metal and extreme players alike, Kirk Hammett from Metallica and Kerry King of Slayer to name only two.

Distortion during lead passages is consistent, sustain is long and the breakup fades smoothly. The ceramic magnet in combination with wide aperture steel poles lend a quick attack but the tone stays nice and fat at the same time. Perfect if you're the only guitarist in the band, and need to switch from rhythm to lead and still keep the band moving. Another great thing about the EMG-81 is it's quiet. If you're playing at really high gain the last thing you need is noise.

If you're looking for exceptional qualities in a high output pickup, the EMG-81 is the one. Two 81's are featured in Kirk Hammett's Signature ESP Guitar, the KH-4. The EMG Pro-Series KH-21 also features Kirkís usual dual 81 set-up for retrofit into any Stratocaster* style guitar.

EMG-85

The EMG-85 was developed as a replacement for our original EMG-58. We still manufacture the EMG-58 on occasion, but the newer EMG-85 is different than the original 58. Both models have characteristics that are admirable, but the 85 won out in the end. Although the EMG-85 has more measurable output than the 81, its frequency response and string interface are different. The 85 uses two Alnico magnet loaded coils with a wide aperture to maintain a beefy low end and a fatter top end. Itís a perfect choice as a rhythm pickup in combination with an 81 in the bridge, which is the same pickup combination used by Zakk Wylde.

The midrange has better definition and doesn't get foggy or muddy in the rhythm position either. Steve Lukather uses the 85 as his lead pickup in the bridge position of his Ernie Ball Signature "Luke" model. It has loads of output and isn't muddy. The 85 has a natural tone that works great as a rhythm and blues pickup. It appeared on the later Guild Bluesbird (designed by George Gruhn) model which was a favorite of blues player Buddy Guy for years. The EMG-85 works best if you like the natural distortion that comes from overdriving the front end of your amp. Under any conditions it responds accurately to your technique.

Diky podobne som nasiel na ich stranke

A s tymi bodkami na snimacoch nahodou neviete?

Pripadne Rocker, nenasiel by si este schemu na 85ku ? :) SI v tom dobry ako vidim  :ohmy:

Vdaka  :drink:

85 je podla mna taka ista ako 81, len magnet je Alnico.
Tie bodky - neznamenaju nic.  :P

Heh a na co su tam? A hlavne v krkovom snimaci inak ako v kobilkaci?

Rozmyslam o zaktivovani mojej jacksonky a tak jej dat stavu + Push Pull vypinac ktory by vypinal tu aktiv elektroniku.

Tak potom odporucam tento FET preamp:

http://www.till.com/articles/GuitarPreamp/

Diky henten preamp s fetom poznam. Ale chcel som vediet ako to robi EMG cko asi to postavim podla ich schemi preca len to bude mat vysi zisk asi....

A takto mam rozmiestnene tie dupky na snimacoch, ak niekdo rozumie co to zanmena poradte....

A este ma zaujima ci poly magnetu musia byt dako specialne usporiadane aby neovplyvnovali struny a zvuk napr na striedacku JSJS alebo je to jedno?

Precitaj si tento clanok - vyborny navod.
Mas tam aj ako maju byt snimace (magnety) umiestnene na gitare.

http://galileo.spaceports.com/~fishbake/buck/humbuck.htm

Dalsi material na studium:

http://tomacorp.com/pickups.html

Pripadne:

http://snimace.lukasuv.net/forum/

Diky diky :)
A este info kde sa da kupit taky soklik (plastova krabicka) alebo puzdro na otvoreny humbukac (ako mam ja vid fotka) aby ten snimac vyzeral ako EMG. NEjde o to napodobnit EMG ale aby mi to lepsie drzalo v ramiku v gitare. Pripadne ci to nezhorsi zvuk, a akou hmotou to tam zaliat aby to dobre drzalo ale nepiskalo (moze byt epoxid?)

Ten kryt mozes zohnat napr.tu:

http://www.guitarparts.co.uk/

alebo tu:

http://www.wdmusic.co.uk/category/Hardware___Parts/Pickup_Rings___Covers

Nieco o zalievani snimacov:

http://www.stewmac.com/freeinfo/A-LINDYFRALIN.html
http://www.guitarnuts.com/technical/electrical/index.php
http://www.instructables.com/id/SRUUJRLFBHXCY7D/
http://archive.ampage.org/threads/1/gtgd/000179/Potting_Pickups-1.html

Nahodou na slovensku to nezozeniem? niesom moc internacionalny.

kludne by som to zalial do nejakeho ofarbeneho epoxidoveho sajrajtu. pripadne skus napisat Slapakovi alebo Milosovi Kovacovi, ci neprezradia, co pouzivaju (li)

Budes musiet stat sa internacionalnym - dnesna doba si to vyzaduje  :P
Neviem, kde sa to tu da zohnat - mozno si to budes musiet vyrobit sam.

Tu su nejake moje snimace - ktore som si vyrobil pred par rokmi.
Jeden je klasicky Hot rodded PAF humbucker, ten druhy je vyborny P90 v rozmeroch humbuckera - zneju skvele obidva.

 :drink:

HEske. Nahodou ukazky mp3 ky nemas?

 :drink:

Nemam bohuzial tu gitaru u seba.

Ale pokial sa pamatam jeden taky isty humbucker som robil pre gitaristu z UKND - mozno ak mu napises, prezradi ti na ktorej to pouzil.  ;)

a ved čo to nedaš do takychto krytov
(http://www.sollerguitars.com/obchod/tmp/2122007210920.jpg)
(http://www.sollerguitars.com/obchod/tmp/852008150333.jpg)
(http://www.sollerguitars.com/obchod/tmp/2122007210820.jpg)

alebo anpiš šlapakovy nech ti preda umele puzdro na snimač ked vyraba sniamče.....

a ja by som to zalial nejakym tvrdšim voskom a je to  :laugh: :laugh: :laugh:
nech to nepiska

ta schema vyzera fakt popichy POLE sprav vyskum a piš vysledky  :laugh: to už môže ist aj buffer do predele

Vacsinou sa pouziva kombinacia parafinu a vosku. Mne stacil aj parafin - v pohode to fungovalo.

Tu je link na diskusiu, ktoru som pred par rokmi inicioval, je tam rozpisana vyroba tej mojej P90, tusim sa tam spomina aj wax poting:

http://www.instrumento.cz/diskuse.php?tar=show_tema&id_kategorie=18&id_tematu=2000&page=0

aky vyznam ma doma robit EMG 81 ked stoji par supov ?  takisto ostatne snimace vychadzaju lacno.  zase konkurencia fabrike ?  :)

the rocker mas moj obdiv  ;) tak naslapaneho cloveka informaciami ,ktorý ich sipe z rukava ako ty ,som tu uz dlho nezazil  :bravo:

Nuz dobra otazka - odpoved je, ze pre dobry pocit.  ;)
Takisto ako ostatni zrucni manici tu na fore si vyrabaju super gitarky a ampy. Presne preto - skusit si to vyrobit sam, zistit ako to funguje - na akom principe, a mat radost z dobre odvedenej prace.
Poviem ti ze je nuda si vsetko kupovat tovarenske a hotove, vyrobene niekym.
Je to super si nieco vyrobit sam  :drink:

;D kua nejeme na pivo  ;D

Dakujem,

Snimacom som sa venoval uz davno. Viem o tom celkom dost. Dokonca som cez interet v Prahe zaskolil jedneho typka, ktory teraz uspesne navija hand made profesionalne snimace - tusim spolupracuje s ceskym poprednym gitararom Honzou Vlasakem.  :drink:

Tu je jeho web:

http://snimace.lukasuv.net/

Inac , za vsetko moze Google  :P

Preco nie ?  :drink:

zaujimava schema ale na otivne korekcie by som dal rdsej tranzistor :zdar:

sak si bol ]:-> ]:->

je to logiske,lebo 064 je nizko prikonovy J-fet opamp

ja mozem aj ked uz nechcem  ;D

Kurna idem s vami  :drink:

TL064 je na chuju opamp. Sumi jak svina. Treba pouzit predcizny a nie nejaku supu za par korun.

Aktivne snimace maju aj slabsie magnety. Na EMG ledva prilepis nieco kovove, ale za DiMarzio Evolution sa mi otocil sroubovak vzdialeny 15cm od snimaca. ;D

x2n je este lepsi, das si kovovy opasok okolo pasa a netreba ti ani gitarovy pas ;D

;D :drink:

Ja som mal/mam v base 072 a nic nesumi  ;D tak potom je problem niekde inde.

"co je pasivne je dobre " povedal na dakej Lýre zvukar od Joan BAEZ  :) a tusim mal pravdu

81 tka nema o nic slabsi magnet ako klasicke pasivne snimace. Len je konstrukcne nizsie umiestneny v puzdre, preto sa zda, ze ma mensi magnetic pull.

ok, tak podme hrat vsetci na akustiky alebo el.gitary nasucho :)

a nehrame? ja len tak cvičim ...mama by ma vyje.... z domu keby jej furt hulakam každy den s gitarou :laugh:

Sak ale 072 je nizkosumovy. 062 je nizkoprikonovy. :-\ Aj tak sumia viac ako jeden jfet.

no zabudol som ze to je dvojzmyselne  ;D
a vsak to bola odpoved na otazku ....a ake mate rozbocovaky ? odpoved pasivne   :laugh: dalej to uz poznas

nebudem sa hadat ,ale asi tam nieje velky rozdiel v sume ,ale v prikone urcite  ;)

od gitaristu z UKND mam Epi Les Paul...
s menenym kobylkovym snimacom... je tam Kent Armstrong, ktory si on daval robit na zakazku :)
mam to od Misa Andela...
jemu si robil snimac ?

Hadat sa nemusis :), ale moj buffer s nizkosumovym jfetom ma mensi sum nez s tl0x2. Ked som robil Sansamp, tak tie opampy sumeli ako svina, tak som ich zamenil za bipolary ne5532 a sum bol neporovnatelne mensi.

Pretoze v Sansampe je neporovnatelne viacej stupnou za sebou zapojenych s neporovnatelne vacsim ziskom nez daky bufer so zosilenim 3dB. Preto ten rozdiel... Ale suhlasim Ne5532 voci TL072 su 100 a jedna.... Este existuju fat supy s oznacenim OC...

Ved jasne, ale preco nemat co najmensi sum. Dalej idu rozne krabicky a je zbytocne uz na zaciatku retazca pridat tolko sumu.

a preo menit baterku kazdy mesiac ,ked môzes menit kazdy rok  ;D
ked mas zosilenie okolo 2 az 3 ,tak rozbiel v sume OPampu je upne zanedbatelny parameter  :kiss:

kto vi epo rusky ? :D
http://guitar.ru/articles/pickup/sound-pickup_318.html