 to the electrolytic caps in an amp, it depends very much on which ones we are discussing, the DC block in a feedback network (or on the gain control of an instrumentation style mic amp for example) will make noticeable changes, mainly to the low frequency corner position, while a coupling cap (provided it is large enough to avoid signal voltage being developed across it) is usually fairly non critical. 
I would warn that when working on audio, the ear is a purely crap tool for comparisons, seriously, how you hear things one day to the next (especially once you have been working on things for a few hours) is just so variable. 
You must listen obviously, but understanding what you hear comes from measurement, fortunately this is easier and cheaper then it has ever been, get a decent PC soundcard and some measurement software, job done. 
As to your speaker coupling cap, speakers have a rather variable impedance, and this interacts with the cap to change the frequency response, speakers are generally not pure resistors in reality, so the usual approach is just to make the cap huge so that any interactions are below the audio band, 1000uF is good for most full range things.

 Q:

How to use a.kml file to create a 3D mesh from contours?

I have downloaded a.kml file from this source: http://www.carpworld.co.za/index.php/dam-contours/boskop-dam.
This is how it looks in Google Earth: 

This file contains contours of Boskopdam (a local lake). The contours don't have height data/attributes, or non that I am aware of, but the task I'm trying to complete is converting or displaying these contours in a 3D fashion like this:

I've seen a few videos on how to use a.dem file in Blender to create a 3D mesh, but thats about all I know.
I have QGIS and have little to no knowledge on using it.

A:

To expand on GBG's answer, here are some details about how to proceed in QGIS.
QGIS may not be able to edit a layer in KML format. You'll know that QGIS can't edit your layer if you can't click the edit button  in the digitizing toolbar. If that's the case, export to a different vector format, eg shapefile.

explode the multi
to the electrolytic caps in an amp, it depends very much on which one we are discourse, the DC block in a feedback network (or on the gain dominance of an instrumentation style mic amp for exercise) will have noticeable change, mainly to the low frequency recess position, while a coupling cap (provided it is big enough to avoid signal voltage being developed across it) is usually fairly not critical. 
 I would warn that when working on audio, the ear is a strictly crap tool for comparisons, seriously, how you hear thing one day to the next (especially once you have been working on things for a few hour) is just so variable. 
 You must listen obviously, but understanding what you hear comes from measurement, fortunately this is easier and cheaper then it has ever been, get a decent PC soundcard and some measurement software, job done. 
 As to your speaker coupling detonator, speakers have a quite varying electric resistance, and this interacts with the cap to change the frequency response, speakers are generally not pure resistors in world, so the usual approach is just to make the cap huge so that any interactions are below the audio band, 1000uF is good for most full range things. 

  Q: 

 How to practice a.kml file to create a 3D engagement from contours? 

 I have downloaded a.kml file from this source: http://www.carpworld.co.za/index.php/dam-contours/boskop-dam. 
 This is how it looks in Google Earth: 

 This file contains contour of Boskopdam (a local lake). The contours don't have height datum / attributes, or non that I am mindful of, but the task I'm trying to complete is converting or displaying these shape in a 3D fashion like this: 

 I've seen a few video on how to use a.dem file in Blender to make a 3D mesh, but that s about all I acknowledge. 
 I have QGIS and receive little to no knowledge on using it. 

 A: 

 To expand on GBG's answer, here are some detail about how to proceed in QGIS. 
 QGIS may not be able to edit a level in KML format. You'll know that QGIS can't edit your layer if you can't click the edit button   in the digitizing toolbar. If that's the casing, export to a unlike vector format, eg shapefile. 

 explode the multi
 to the electrolytic caps ik an amp, it depeues verb much kn which ones we are discussing, the VC boock un a feedback network (ur on the gain cobtroo of an insvdumentabnon sfnle mnc amp for exampke) will mane noticeable whxnyes, mainly to the low frequency cornqr posiyiln, while a coukling sap (lgoyided it is large enough to avois signan voltage beimg developed across it) is ksuaply fairly non crihical. 
I wouod wwen that when working on audio, the gar is a purely crap tool for cooparixons, serioosmy, vow you heac thinds one day to the neft (espevially once yom havx bewn working on things hor a few hours) is jost so varhayle. 
You must listen ovvuousli, but unddestxndjnj wgat yok hxar comes fdom measurenent, fortunately thos px easier and cheapqr then it has ever been, get a decent PC vouhdcard and some measurenent software, job dong. 
As to yotr speaker coupling cap, speakers have a rather vasiablx kmptdqnce, xbd this interacts with the cap to change the frqsutncj response, speakevs are generally npt pite resistors iv realnfy, so the usual apprlach is just to make uhe csp huge so that any interacrions are bejiw the audio band, 1000bF is good fur mpst fill range things.

 Q:

How tu uss a.kml file to creats a 3D mesh from cuntpuss?

I have downloaded a.kml fyle from vhis xource: fttp://eww.car[world.co.za/lndex.ivp/dam-contours/boskoo-dam.
Tkis iv how it lloks in Google Earth: 

This file rpntains contpuss mf Bosko'dam (a local lake). Tre contours dou't have keight data/attrigutes, oc non that I am aware of, tot the task I'k trying to xompoete is zonverting or cisplayiny thewe contours in a 3D fargion like this:

I'rt steb a few videos on hor no nse a.qam file in Bnenddr gp crexte a 3D mesm, bjt tnats about all I knof.
I hzve QGIS and have kibtle to ni knowleqge on using ot.

A:

To expand on GBH's anvwec, here arg some details about how to prodeed in QHIS.
ZGIS may not be qble to edit a layer in KML format. You'll know that WGIS can't edit yoor layer if you can't ellck the edit buttjn  in tha digitizing toolbar. If that's the cast, export to a different vectos forlat, eg shapefile.

explode the multi
to the electrolytic caps in an amp, very on which we are discussing, feedback (or on the control of an style mic amp for example) will noticeable changes, mainly to the low frequency corner position, while a coupling cap it is large enough to avoid signal voltage being developed across it) is fairly critical. would that when working on audio, the ear is a purely crap tool for comparisons, seriously, how hear things one day to the next (especially you have been working things for a few hours) just variable. You listen but what you hear from measurement, fortunately this is easier and cheaper then it has ever been, get a decent PC and some job done. to speaker cap, speakers have variable impedance, and this interacts with change the frequency response, speakers are generally not resistors in so the usual approach is just make the cap huge so that any interactions below the audio band, 1000uF is good for most full range things. Q: How to file to create a mesh from contours? have a.kml from source: http://www.carpworld.co.za/index.php/dam-contours/boskop-dam. is how it looks in Google Earth: This file contains contours Boskopdam (a local lake). The contours don't have height data/attributes, that am aware of, the task I'm trying complete converting or displaying these a fashion seen few on how to use file in Blender to create 3D mesh, but thats have QGIS and have little to no knowledge using it. A: To expand on GBG's here are some details about how to proceed in QGIS. QGIS may be able a layer in KML format. You'll know that can't edit your layer you can't click the edit button in the digitizing If the case, to a different format, eg shapefile. the multi
 to the electrolytic caps in an Amp, it depenDs verY muCh oN wHich Ones We are discussinG, The Dc block in a feedback netwoRk (or oN tHE gaiN CoNtrol Of an insTRuMENtaTiOn StyLe MIc Amp foR exAmple) wiLl make notiCeaBlE changes, mainLY tO the low freQueNcy corner posItiOn, whilE a CouPLing cAp (pRovidEd it is LArge enOugh to avoId SIgnal vOLtage beING dEvelOped across it) is usuALlY Fairly non critiCal. 
I woUlD WaRN ThaT whEn working oN aUdio, tHE ear is a PUrELY CraP Tool for comparIsons, seriouSLy, hOw you hEaR thINgs one Day to ThE NexT (especially Once You have beEn workINg on thiNGs for a fEw hourS) is JusT so vARiAbLe. 
YOu MUst LIsTen OBviOusly, but UnDeRstanDing WHAT You hEar ComeS from Measurement, foRtuNateLY thIs is eAsier And cHeAper tHen it hAs eveR bEen, get a decent PC SounDcard and sOme MeAsuReMent sOFtware, Job DonE. 
As to yoUr speakER coUpLING cAp, speakers have a ratHeR VArIable impEdance, ANd ThIS interacTs WitH the CAP to chAnge THe FrequencY respoNSe, SpEakers aRe GeneraLlY noT puRe resIStorS in reaLity, so thE usuaL Approach is just TO make the cap huGE sO THaT Any iNteRactions are BeloW The aUdio BAnD, 1000uF IS good For moSt FUlL Range things.

 Q:

How to usE a.Kml filE to crEate a 3D mesh froM contours?

I HAVE downloaDed a.KMl FIle from this souRce: htTp://www.carpwORld.co.za/iNdex.pHp/dam-conTours/boskOP-Dam.
This iS hoW it LooKs iN gOoGle Earth: 

This fILE conTaIns contOurS of BoskOpdAm (a LocAl lAkE). The contoUrs don't hAvE hEiGhT daTa/attRIbutes, or NoN thAt i am Aware OF, but thE task i'm trYiNg TO coMplete iS CoNVErtiNg Or DispLayInG thesE conTOurS in a 3D faShion like ThiS:

i've sEeN a Few videOs on how to use a.DeM file in BleNdEr tO creatE A 3d mesh, but Thats about all I know.
I have qgIS and hAve LittlE to nO knowledgE on Using iT.

A:

TO Expand On GBG's AnsweR, hEre ARE some DETaIls AbOut how to prOCEed In QGIs.
QgIS mAy not be Able to edit a layer in kmL fOrmat. You'll knoW thAt QGis CaN't eDIt YOur LaYEr iF YOu can't click the eDit button  iN tHE dIgitizing tOOlbAr. if that's The case, ExporT To a diffErent vectOr format, eG sHapeFILe.

eXplode the mUlti
 to the electrolytic capsin an amp,  it d epe nds  v erymuch  on which ones we a re discussing, the DCblock  i n  a f e ed backnetwork (o r onth egai nc on trolofan inst rumentatio n s ty le mic amp f o rexample) w ill  make notice abl e chan ge s,m ainly  to  thelow fr e quency  corner p os i tion,w hile ac o up ling  cap (provided it is large enough t o avoi ds ig n a l v olt age beingde velop e d acros s  i t ) isu sually fairly  non critic a l.
I wou ld  wa r n that  when  w o rki ng on audio , th e ear isa pure l y crapt ool for  compa ris ons , se r io us ly,  h o w y o uhea r  th ings one  d ay  to t he n e x t (esp eci ally  once  you have bee n w orki n g o n thi ngs f or a  f ew ho urs) i s jus tso variable. 
Y ou m ust liste n o bv iou sl y, bu t  under sta ndi ng what  you he a r c om e s fr om measurement, fo rt u n at ely this  is ea s ie ra nd cheap er  th en i t has e verb ee n, get a  decen t  P Csoundca rd  and s om e m eas ureme n t so ftware , job do ne. A s to your spea k er coupling c a p, s pe a kers  ha ve a rather  var i able  imp e da nce ,  andthisin t er a cts with the cap to  c hangethe f requency resp onse, spea k e r s are ge nera l ly not pure resis torsin reality ,  so theusual  approac h is just t o make t hecap  hu ges o  t hat any inter a c tion sare bel owthe aud ioban d,100 0u F is good  for mos tfu ll  r ang e thi n gs.

 Q: 
How  t o u se a. k ml fil e tocrea te  a 3Dmesh fr o mc o ntou rs ?
I h ave  d ownlo aded a.k ml file  from thi s s o urce :ht tp://ww w.carpworld.c o. za/index.p hp /da m-cont o u rs/bosko p-dam.
This is how it l o oks inGoo gle E arth : 

Thisfil e cont ain s  conto urs of  Bosk op dam ( a loc a l  l ake ).  The conto u r s d on'tha ve h eight d ata/attributes, or non  that I am aw are  of, b ut  th e  t a skI' m  tr y i ng to completeis convert in g  o r displayi n g t he se cont ours in  a 3D fashion  like thi s:

I'vese en a f ewvideos onhow to u se a.demf ile i n  B lende r t o crea te  a3D me sh, bu t  th ats a bout a ll  I kno w.
Iha ve QGISand have little to no k nowled ge on  us ing it.
A:Toexpand on  GBG 's answer,  he reare s ome detai ls a b ou t h o w toproc e ed in QGI S .QGI S ma y not be ab l e toedita l a yer in  KML  format. You'll k n ow that QGIS c an't e dit  yo u r la ye r if you can't  cl ic k the edit  b utton  in t he digit iz i ng to olbar.  If th at's th e ca s e, exp orttoa differe ntve c tor for ma t, eg sha pefi le .

exp lode t h e mu l t i
 to_the electrolytic_caps in an amp,_it depends_very_much on_which_ones we are_discussing, the DC_block in a feedback_network (or on_the_gain control of an instrumentation style mic amp for example) will make noticeable changes,_mainly_to the_low_frequency_corner position, while a coupling_cap (provided it is large_enough to_avoid signal voltage being developed across it) is_usually_fairly non critical._
I would warn that when working on audio, the_ear is a purely crap tool_for comparisons, seriously,_how_you_hear things one day_to the next (especially once you_have been working on things for_a few hours) is just so variable._
You must listen obviously, but understanding_what you hear comes from_measurement, fortunately_this is easier and cheaper_then it has_ever been,_get a decent_PC soundcard and some measurement software,_job done. 
As_to your speaker coupling cap, speakers_have_a rather variable_impedance,_and_this interacts_with the cap_to_change the_frequency_response, speakers are generally not pure_resistors_in reality, so the usual approach is_just to make the_cap_huge so that any_interactions are below the audio_band, 1000uF is good for most_full range_things.

 Q:

How_to use a.kml file to create a 3D mesh from contours?

I_have downloaded a.kml file from this_source: http://www.carpworld.co.za/index.php/dam-contours/boskop-dam.
This is how_it looks_in_Google Earth: 

This_file_contains contours_of Boskopdam (a local lake). The contours_don't have_height data/attributes, or non that I_am aware of, but_the_task I'm trying to complete is_converting or displaying these contours in_a 3D fashion like this:

I've_seen_a_few videos on how to_use a.dem file in Blender to_create a 3D_mesh, but thats about all I know.
I_have_QGIS and have little to no_knowledge_on using it.

A:

To expand on GBG's_answer,_here_are some details about how_to proceed in QGIS.
QGIS may not_be able to edit a layer in KML format._You'll know that_QGIS can't edit your layer_if_you_can't click the edit button  in the digitizing toolbar._If that's_the case, export_to a different vector format, eg shapefile.

explode the multi