Bottlehead Forum

Bottlehead Kits => Legacy Kit Products => Topic started by: Mikey on March 09, 2010, 03:59:41 AM

Title: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Mikey on March 09, 2010, 03:59:41 AM

What is the minimum voltage rating I can get away with for the parafeed capacitor in my SR-45 amps?
I'm thinking of trying a different cap here, but I don't want to burn down my house....

Mike

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Paul Joppa on March 09, 2010, 08:28:33 AM

600 volts. You know I would prefer 800 volts (always!) but we've never had any problems with 600 or 630v rated parts.

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Mikey on March 09, 2010, 08:29:25 AM

Thanks PJ!

Mike

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Mikey on March 22, 2010, 05:57:20 AM

I haven't found any capacitors (with a 600+ volt rating) that I think would
be a sonic improvement over the oil caps I've got in there now, so....

I've got a pair of nice Elna Cerafine (2) section electrolytic capacitors,
the value is 220uF x2, 500V.  Would one of theses caps be a suitable
replacement for the two 47uF caps in the power supply CRC filter?

Mike

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Grainger49 on March 22, 2010, 08:00:34 AM

Possibly you are already using them but... the Obbligato Polypropylene Film in Oil caps are rated at 630V.

http://www.diyhifisupply.com/catalog/35

Available at 2.0uF to 70uF.

Mundorf Silver/Oil are available at an 800V rating, but I don't know what value you need.  These are of course of the high dollar spread variety.  As are the M-Cap Supreme, but not as expensive.

Which oil cap are you using?  What value do you need? 

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Mikey on March 22, 2010, 08:03:09 AM

Thanks G!

How do these differ from the garden variety Solens?

Mike

Title: Re: Paramour 2 (SR-45) Parafeed Capacitor Voltage Rating?
Post by: Grainger49 on March 22, 2010, 08:11:21 AM

I took the recommendation of a Bottlehead poster over at the old site.  They are cheap and nice sounding.  I used them to my liking in my Paramours (1).  There is a slightly warmer sound than Solens and smoother high frequencies.  They sound like motor start oilers but with more detail.  If I can tell the highs are better, they are.  My high frequencies drop about 20dB.  

Several other posters have used them and most liked them.  But as BillW said (first in my memory) capacitors are like spices.  Some guys like one and some guys like another.

I edited the above post (reply 5) to include a couple of other suggestions.