Motor Run vs. Solen in TSE

jeffx · 23rd January 2011, 01:23 PM

I am beginning to gather the parts for my Tubelab SE build. For the PS bypass cap I am considering either a Sprague motor run oil cap(370v 100uF) or a Solen cap(400v 100uF). They are about the same price($28) when s&h is considered.

Anyone compared these? Other options at this price point?

Evenharmonics · 23rd January 2011, 03:02 PM

I would go with 400V if using 300B tubes.

jeffx · 23rd January 2011, 03:10 PM

Thanks for the reply. I should have mentioned that I will be using 300B's.

mctavish · 23rd January 2011, 03:18 PM

The motor run is probably 370v AC which means quite a bit higher rating for DC. Motor runs are normally preferred over the solens as they are oil filled and might have a lower ESR than the solen. Not sure. OH, and they just look cooler

jeffx · 23rd January 2011, 03:30 PM

The motor run caps are 370vac and 650vdc.

rknize · 23rd January 2011, 04:09 PM

I would use whichever fits/looks the best, if the price is about the same. I don't know which would have the lowest ESR, as it depends on the construction of the cap. The difference is probably not significant.

imnewbie · 5th March 2011, 06:42 PM

Very interesting question, it made me think about these Obbligato film oil caps. I wonder if I can use them as supplemental power supply cap with my Simple SE.

Unlike the solen's these are oil filled. I read somewhere these have low induction; I don't know what that means but thought I should write it here.
Obbligato Film Oil 70uF 630V | Diy HiFi Supply

How different are these technically from motor run caps? Motor run caps will sound better than these obbligato's no matter what?

Gluca · 5th March 2011, 06:50 PM

I have been using in my PSUs sturdy and reliable and cheap and indeed very good ASC capacitors since ages. No coming back. Bulky but worth every penny.

lth1 · 5th March 2011, 07:00 PM

IMHO (and all cap comparison test that I have read) the best sounding motor run power supply caps are ASC, which actually use oil, most of the other motor run caps use a gel. It would be interesting to know if this is what makes the ASC a better sounding cap over the Dayton and other gel motor run caps.

Lee Hankins

23rd January 2011, 01:23 PM	#1
jeffx diyAudio Member Join Date: Jun 2006	Motor Run vs. Solen in TSE I am beginning to gather the parts for my Tubelab SE build. For the PS bypass cap I am considering either a Sprague motor run oil cap(370v 100uF) or a Solen cap(400v 100uF). They are about the same price($28) when s&h is considered. Anyone compared these? Other options at this price point?

23rd January 2011, 04:09 PM	#6
rknize All the best stuff comes from Chian diyAudio Member Join Date: Feb 2009 Location: Chicagoland	I would use whichever fits/looks the best, if the price is about the same. I don't know which would have the lowest ESR, as it depends on the construction of the cap. The difference is probably not significant. __________________ Russ http://www.knizefamily.net/russ/cate...ics/tubeaudio/

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Motor run caps?	albireo13	Tubelab	12	5th March 2010 08:35 AM
motor run caps	grahamb	Tubes / Valves	3	17th September 2009 11:14 PM
motor run capacitor	milen007	Parts	12	28th June 2008 05:49 PM
Motor Run Capacitor	Zap	Tubes / Valves	2	14th May 2008 09:59 PM
dual value motor run caps	wicked1	Tubes / Valves	4	6th February 2008 09:37 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read

23rd January 2011, 03:02 PM	#2
Evenharmonics diyAudio Member Join Date: Apr 2007	I would go with 400V if using 300B tubes.

23rd January 2011, 03:10 PM	#3
jeffx diyAudio Member Join Date: Jun 2006	Thanks for the reply. I should have mentioned that I will be using 300B's.

23rd January 2011, 03:18 PM	#4
mctavish diyAudio Member Join Date: Feb 2008 Location: Niederösterreich	The motor run is probably 370v AC which means quite a bit higher rating for DC. Motor runs are normally preferred over the solens as they are oil filled and might have a lower ESR than the solen. Not sure. OH, and they just look cooler

23rd January 2011, 03:30 PM	#5
jeffx diyAudio Member Join Date: Jun 2006	The motor run caps are 370vac and 650vdc.

5th March 2011, 06:42 PM	#7
imnewbie diyAudio Member Join Date: Jun 2010 Location: SE Pennsylvania	Very interesting question, it made me think about these Obbligato film oil caps. I wonder if I can use them as supplemental power supply cap with my Simple SE. Unlike the solen's these are oil filled. I read somewhere these have low induction; I don't know what that means but thought I should write it here. Obbligato Film Oil 70uF 630V \| Diy HiFi Supply How different are these technically from motor run caps? Motor run caps will sound better than these obbligato's no matter what?

5th March 2011, 06:50 PM	#8
Gluca diyAudio Member Join Date: Nov 2004 Location: Back to Italy	I have been using in my PSUs sturdy and reliable and cheap and indeed very good ASC capacitors since ages. No coming back. Bulky but worth every penny.

5th March 2011, 07:00 PM	#9
lth1 diyAudio Member Join Date: Nov 2009 Location: Homer, Alaska	IMHO (and all cap comparison test that I have read) the best sounding motor run power supply caps are ASC, which actually use oil, most of the other motor run caps use a gel. It would be interesting to know if this is what makes the ASC a better sounding cap over the Dayton and other gel motor run caps. Lee Hankins