Which 15000uf 63v caps??

[nad]

Howdy folks!

Anyone recommend a pair of 15000uf 63v main caps?

I have 10000uf 50v Mundorf Si's at the minute but they're showing 47v so there's not much headroom, hence the swap.

They must be reasonable in price as I'm not looking to spend more than £20 per cap.




Thanks

[bleachershane]

No idea if this is the sort of thing you're looking for...
15000UF-63V CAPACITORS GOLD TUNE NICHICON on eBay (end time 16-Dec-09 10:45:24 GMT)

[tiefbassuebertr]

Originally Posted by nad

They must be reasonable in price as I'm not looking to spend more than £20 per cap.
Thanks

Because this is one of the important device, I would not recommend to buy a low cost version. On the other hand there is no justify to pay a unnecessary amount of £'s for the typical slogan "special made for audio"
You can use without problem also the value "10000uF". The follow examples offers very good quality and reliability:
Evox-Rifa | Passives | Capacitors | Capacitors, Aluminium | Clamp-fixing - ALS30, B43564 85°C |PEH200MD5100M
BHC Components | Passives | Capacitors | Capacitors, Aluminium | Clamp-fixing - ALS30, B43564 85°C |ALS30A103DE063
Epcos | Passives | Capacitors | Capacitors, Aluminium | Clamp-fixing - ALS30, B43564 85°C |B41456B8109M

[bleachershane]

Thoroughly recommend any BHC 10000uf at 63v, put in my Rotel BX-870BX as a direct replacement (capacitance and voltage) and they worked a treat.

Got them from here
Aerovox BHC Electrolytic Capacitor 10000uF / 63V on eBay (end time 12-Dec-09 16:13:40 GMT) if you like eBaying (decent price, service and yes the parts did turn up!)

[nad]

Forgot to mention they're snap-in and I'm limited to 55mm in height.

Just incase the first post is missed, I am currently using 10000uf 50v Mundorf M-Lytic Si's but they're showing 47v, so looking to increase the headroom.

I'm also looking for 15000uf as I assume I will get better dynamics and bass response than with the original spec 10000uf value?

[Xoc1]

What do you think is wrong with using the existing capacitors at 47V rail voltages?
You are using them within specification.
BHC Specify a 65V surge rating for their ALS 50v capacitors.
So I would assume that your Mundorf caps would tolerate an occasional voltage spike.
Of course replacing them with new components will help, if they are old, or have been run at high temperatures. You will need to make sure that your new capacitors will fit in the existing space.
Audiocap
AudioCap.Net fom AudioCap Limited - The Audio Capacitor Supplier
Have a good selection of capacitors that would be suitable.

[nad]

Originally Posted by Xoc1

What do you think is wrong with using the existing capacitors at 47V rail voltages?
You are using them within specification.
BHC Specify a 65V surge rating for their ALS 50v capacitors.
So I would assume that your Mundorf caps would tolerate an occasional voltage spike.
Of course replacing them with new components will help, if they are old, or have been run at high temperatures. You will need to make sure that your new capacitors will fit in the existing space.
Audiocap
AudioCap.Net fom AudioCap Limited - The Audio Capacitor Supplier
Have a good selection of capacitors that would be suitable.

The Mundorfs are only a couple of months old. Do you not think I will get increased dynamics and bass with a 15000uf rather than a 10000uf?

[tinitus]

Originally Posted by nad

Howdy folks!

but they're showing 47v so there's not much headroom, hence the swap.

Is that your supply that is 47Vdc ?

If so you should be ok with 50V caps
They are made to endure 50V safely, and may probably take a good deal more
I have even heard people claim caps to work better when working close to their limit
Too low voltage can make them become "dull"
So they say, but I dont know
Should I go buy new caps for 47Vdc, I would choose 63V too

I have decided to use BC caps from Schuro, Germany
The spec sheet seems gone, but last time I looked they were rated at 105degree and long life
Next option may be F&T from AudioCap.co.uk

[mjf]

hello.
Passives | Capacitors | Capacitors, Aluminium 4294955331&selectAttribute=63V(dc)#breadCrumb
perhaps there are some parts.....................panasonic is a standard i have often used.
greets

[bleachershane]

First off why not measure the line they're on to see if the Mundorfs are working on their limit or already overspecced. If they're right on their limit maybe consider uprating, if they've already got a good overhead stay at 47V.

Secondly, it's not just a cut and shut case that if you up the capacitance you'll suddenly hear an extra abundance of dynamics and bass. What if the 10000uF is already more than enough? Increasing the capacitance might not make one iota of difference in these terms.

Another thing to consider if the increase in peak in-rush currents at turn on due to the increased capacitance. Be aware of this!