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WHere to put a capacitor

Started by shizzle, May 18 2010 10:38 PM

13 replies to this topic

#1 shizzle

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Posted 18 May 2010 - 10:38 PM

Heya,

I recently came into possesion of a cap (2 farad soundstream). I would like to use this in my install, but have read in the past conflicting opions on the best place to put it. I know it is nota bandaid fix, and truth be, I am not trying to 'fix' anything.
So, is is best to use the cap on the midbass amp, or the sub? Midbass amp is 200wx4, running 6.5" Oz's and horns; bass amp is 800w running a JBL Gti 15".
Logic tells one the sub amp, as it uses more power, but I read somewhere that it is better on the midbass (cannot remeber the reason now).

anyhoo, opinions welcome
thanks
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Amp Front : Phoenix Gold X200.4
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Highs : USD Waveguides
Amp Sub : Eclipse DA7122
Sub : JBL GTi MKII 15"
Cables and Acc. : Stinger Helix, Audison Connection, PG
Car : 1972 Holden HQ Premier

#2 Big_Valven

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Posted 19 May 2010 - 02:40 AM

As close as possible to the power terminals of the sub amp. :)

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#3 Stone

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Posted 19 May 2010 - 04:54 AM

Electricity travels at pretty much the speed of light depending on the conductor quality, so I don't see how distance matters as everything is in parallel to the capacitor anyway. I'd love to hear other opinions though :)

Edited by Stone, 19 May 2010 - 04:55 AM.

#4 ~Spyne~

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Posted 19 May 2010 - 08:37 AM

Midbass - Pulse-R made a post explaining why a cap was more useful for midbass than subbass (quite a while ago, but the search function should turn it up)

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#5 Winno

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Posted 19 May 2010 - 09:06 AM

Midbass/treble amp - for a subtle improvment in dynamics from the midbass and 'air or transparency' as you move into your treble.

This is where I noticed the benefits the most in systems past.

(Anyone selling a couple of good quality 1+ Farad caps? - I'm after a couple for my system)
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#6 shizzle

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Posted 19 May 2010 - 09:52 AM

Cool, so far its :
1- sub
2 - mid/highs

I will try it on my mids/highs :)
'72 HQ Build Log
HU : Clarion DXZ776USB
Amp Front : Phoenix Gold X200.4
Midbass : Dynaudio MW180
Highs : USD Waveguides
Amp Sub : Eclipse DA7122
Sub : JBL GTi MKII 15"
Cables and Acc. : Stinger Helix, Audison Connection, PG
Car : 1972 Holden HQ Premier

#7 Stone

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Posted 19 May 2010 - 10:28 AM

Nevermind, no point.

Edited by Stone, 19 May 2010 - 10:29 AM.

#8 bradass

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Posted 19 May 2010 - 10:36 AM

If the cap is grounded to the chassis it will help the vehicle not just the amps.. as is the case with the Aerpro 2F cap I've had for a while now..

#9 Damo95

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Posted 20 May 2010 - 09:03 AM

i'm with you winno...


im tempted to put 1 inline of my front stage amps... shiny also makes a note in his 155 install thread about the caps...

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#10 REVNSS.inc

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Posted 20 May 2010 - 07:13 PM

Anywhere in the electrical system, power flows in a circuit so quickly that the affect you get I feel would be neglible as to where it is placed, however im not arguing with peoples findings so take it as you may. :)

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#11 Tiger

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Posted 20 May 2010 - 07:30 PM

Capacitor? Or a Voltage Regulator? :)
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#12 mrock

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Posted 21 May 2010 - 08:45 AM

Power both. Just run it into a distribution Block and then split the power to the 2 amps.
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#13 Pulse-R

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Posted 22 May 2010 - 10:40 AM

the cap placement, as long as it's 'near' an amp will provide assistance. you can't tell the electrons which amp to go to - they'll go to the one drawing most power.
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#14 shizzle

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Posted 22 May 2010 - 09:06 PM

thanks for all the info guys. The answers make sense, and allow me to install the cap with confidence now.

Cheers,
'72 HQ Build Log
HU : Clarion DXZ776USB
Amp Front : Phoenix Gold X200.4
Midbass : Dynaudio MW180
Highs : USD Waveguides
Amp Sub : Eclipse DA7122
Sub : JBL GTi MKII 15"
Cables and Acc. : Stinger Helix, Audison Connection, PG
Car : 1972 Holden HQ Premier
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