Humble Optimo XO

dublin78 · 18th December 2006, 07:15 AM

Hi
I am putting together an order with lautsprechershop.de for the crossover components using Humble Homemade Hifi's Optimo design ("budget" version): http://www.humblehomemadehifi.com/Optimo.html
I am struggling to understand and find the 0.01uF MKP1836 bypass cap.
It does not appear on the scematic. How should it be placed in the circuit?
Where can I purchase one from ( I can't find one on lautsprechershop.de website)?
I have used lautsprechershop.de in the past with good results. Can anyone recommend a UK source for these components? I prefer one stop shopping!
Thanks in advance.
michael

sreten · 18th December 2006, 12:22 PM

Hi,

They go in parallel with C1a and C1b, i.e. one is C1c, and C2a and C2b, i.e. one is C2c.

Try Falcon Acoustics, quality 0.01uF should not be hard to find.
( Hmmm..... 0.01uf is very low for a loudspeaker component)

/sreten.

ABO · 18th December 2006, 12:42 PM

Being the first owner of an Optimo ever (the speaker in the website are mine) I wouldn't worry over these small caps. Specially when using the budget XO.

I do use a silver/oil cap for C2a and that brought substantial improvement not to be missed! I think I have C2 divided in three parts:

5.6 uF silver oil
5.6 uF MKP+
1.5 uF MKP+

The optimo is a great sounding speaker. You won't be disappointed.

regards,

Abo

RJ · 18th December 2006, 05:32 PM

Quote:

Originally posted by dublin78
Hi
Can anyone recommend a UK source for these components? I prefer one stop shopping!
Thanks in advance.
michael

Try LCR Capacitors FSC tubular foil polystyrene, axial lead 0,01mF 160Vdc – 2,5% tolerance

They're made in GB.. and passed Tony Gee's test;
http://www.humblehomemadehifi.com/Cap.html

Scroll all the way down.

http://www.lcrcapacitors.co.uk/default.htm

dublin78 · 9th February 2007, 01:39 PM

Thanks for the info.
I have bought these from rs components, had to but 10x though.
Best wishes.

rkreim · 10th February 2007, 12:08 AM

Hello
i have been looking to build these speakers for some time .When you have finished them i would like to know how they turn out and how they sound also what crossover parts were used .
thanking you rkreim

dublin78 · 16th February 2007, 05:34 PM

Hi again.
I am about to fit these caps, but I am unsure whether they are bi-polar. They do appear to have one end coloured.
Any ideas?
Thanks in advance.

soongsc · 19th February 2007, 09:23 AM

The little transparent cap is a polystyrene cap, non-polar.

sreten · 19th February 2007, 10:07 AM

Quote:

Originally posted by soongsc
The little transparent cap is a polystyrene cap, non-polar.

Hi,

True, the indicator shows the outside of the foil, which if applicable to
the circuit position of the capacitor should be connected to ground.

/sreten.

HiFiNutNut · 19th February 2007, 08:24 PM

You are using good caps already I am not sure if the MKP1836 would make much of a difference.

Please connect and disconnect the MKP1836 a few times while listening and let us know if it improves the sound or not.

18th December 2006, 07:15 AM	#1
dublin78 diyAudio Member Join Date: Mar 2006 Location: Cheshire	Humble Optimo XO Hi I am putting together an order with lautsprechershop.de for the crossover components using Humble Homemade Hifi's Optimo design ("budget" version): http://www.humblehomemadehifi.com/Optimo.html I am struggling to understand and find the 0.01uF MKP1836 bypass cap. It does not appear on the scematic. How should it be placed in the circuit? Where can I purchase one from ( I can't find one on lautsprechershop.de website)? I have used lautsprechershop.de in the past with good results. Can anyone recommend a UK source for these components? I prefer one stop shopping! Thanks in advance. michael

19th February 2007, 09:23 AM	#8
soongsc diyAudio Member Join Date: Mar 2005 Location: Taiwan	The little transparent cap is a polystyrene cap, non-polar. __________________ Hear the real thing!

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18th December 2006, 12:22 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, They go in parallel with C1a and C1b, i.e. one is C1c, and C2a and C2b, i.e. one is C2c. Try Falcon Acoustics, quality 0.01uF should not be hard to find. ( Hmmm..... 0.01uf is very low for a loudspeaker component) /sreten.

18th December 2006, 12:42 PM	#3
ABO diyAudio Member Join Date: Dec 2003 Location: Amst	Being the first owner of an Optimo ever (the speaker in the website are mine) I wouldn't worry over these small caps. Specially when using the budget XO. I do use a silver/oil cap for C2a and that brought substantial improvement not to be missed! I think I have C2 divided in three parts: 5.6 uF silver oil 5.6 uF MKP+ 1.5 uF MKP+ The optimo is a great sounding speaker. You won't be disappointed. regards, Abo

9th February 2007, 01:39 PM	#5
dublin78 diyAudio Member Join Date: Mar 2006 Location: Cheshire	Thanks for the info. I have bought these from rs components, had to but 10x though. Best wishes.

10th February 2007, 12:08 AM	#6
rkreim diyAudio Member Join Date: Jul 2005 Location: australia	Hello i have been looking to build these speakers for some time .When you have finished them i would like to know how they turn out and how they sound also what crossover parts were used . thanking you rkreim

19th February 2007, 08:24 PM	#10
HiFiNutNut diyAudio Member Join Date: May 2004 Location: Sydney	You are using good caps already I am not sure if the MKP1836 would make much of a difference. Please connect and disconnect the MKP1836 a few times while listening and let us know if it improves the sound or not.

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