How important is capacitor size?

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May 31st, 2012, 07:39 PM
cradeldorf

How important is capacitor size?

I want to build
May 31st, 2012, 08:10 PM
SD-50

Re: How important is capacitor size?

Being a cheap bastard I find that to be a lot of money for caps. See if you can find a supplier of surplus PIO caps, combine caps to reach the value required, best bang for the buck, vastly superior to the Solen previously used. That being said, never used boutique caps larger than .01mfd in value.
Cheers
May 31st, 2012, 11:09 PM
bowtie427ss

Re: How important is capacitor size?

Parallel two 6.8uF Dayton metalized poly caps, that get's you within .4uF of your 14uF goal for a reasonable price in a reasonable size package.

These will probably work for L-pads: L-Pad 100W Mono 3/8" Shaft 16 Ohm 260-261
June 1st, 2012, 09:38 AM
voice of the theater

Re: How important is capacitor size?

How impotent is capacitor size? Well, I've heard some speaker manufacturers claim (non Altec) that it's not the size, but how you use it. ;) Two of these should do nicely..... Madisound Speaker Store
June 1st, 2012, 10:22 AM
voice of the theater

Re: How important is capacitor size?

Quote:

Originally Posted by cradeldorf

If you thought those were expensive.
Duelund Coherent Audio CAST capacitors

I just read the description/pricing of these capacitors. Several cost over $1,000!? I know this isn't junior high school, but from their description of these capacitors "which necessitates several days of impregnation under high pressure." Insert joke here......
June 1st, 2012, 12:29 PM
Old Guy

Re: How important is capacitor size?

Martin carries Bennic

Martin Sound

You can parallel/series to get the right values

Series and parallel capacitors : CAPACITORS
June 1st, 2012, 12:39 PM
Panomaniac

Re: How important is capacitor size?

Get 12uF and a 2uF Jantzen from Parts Express. Really good caps and not super $$$. I love them. Or just pop in a single 15uF and don't worry.
June 1st, 2012, 03:07 PM
Altec Best

Re: How important is capacitor size?

Yes you only need to parallel them to reach your values if you can't find the 14 uF.
June 1st, 2012, 03:34 PM
SD-50

Re: How important is capacitor size?

Quote:

Originally Posted by cradeldorf

If you thought those were expensive.
Duelund Coherent Audio CAST capacitors

Dueland caps are a inexpensive compared to their inductors, insane prices!
June 1st, 2012, 11:19 PM
Panomaniac

Re: How important is capacitor size?

Yep, that should do the trick!
June 3rd, 2012, 09:25 AM
voice of the theater

Re: How important is capacitor size?

Any pics?
June 3rd, 2012, 10:12 PM
Alien_Shore

Re: How important is capacitor size?

Now that is awesome. No tweako hifi snobbery there! Just some duct tape, coat hangers, and spare #8 wood screws. Love it. :Thumbs up:
June 4th, 2012, 05:35 PM
Alien_Shore

Re: How important is capacitor size?

Are both sections 8 ohm? if so, you effectively have a huge hole in your FR, right?
Because that would mean the HF is crossing at 3150 Hz and the LF is crossing at 845 Hz.
June 4th, 2012, 07:39 PM
Alien_Shore

Re: How important is capacitor size?

well duh, of course. And I bet those babies are sounding so sweet!!
I gotta get me some duplexes...
June 4th, 2012, 09:37 PM
GM

Re: How important is capacitor size?

Hope the HF have loading caps, otherwise I doubt the diaphragms will last very long at high SPL.

GM
June 14th, 2012, 02:30 PM
juniper

Re: How important is capacitor size?

If anyone is looking for some odd value or very large capicitors? there is a military surplus store that I take my son to for weird purchases for little kids projects. They have tens of thousands of NOS military capacitors, switches, attenuators, and almost anything electrical... I have even seen world war one tube amps. If there is anything board members are looking for PM me and I can check...