MOX builder’s thread - Page 2

tiroth · 2nd July 2004, 09:33 PM

At minimum, you need some kind of summing circuit, whether that is an opamp or a simple resistive summer; otherwise, they will fight each other.

marsupialx · 2nd July 2004, 09:42 PM

Potential compounded stupidity...

Can the output buffer play a role in the afore mentioned summing, feeding both signals thru the one buffer?

I'm way out on a limb, way past my comprehension of electronics on this, sorry.

marsupialx · 2nd July 2004, 10:32 PM

I'm starting to get my head around what is needed to sum two crossovers. It's a mixer, without all the knobs. - Thanks -

JensRasmussen · 3rd July 2004, 08:48 AM

Grimberg

Parts list as word file here : Partslist

It's the best I can do. Tyler has an excel file with values.

Tyler could you post it here?

\Jens

JensRasmussen · 3rd July 2004, 10:38 AM

Parts list as PDF now ready : here

\Jens

marsupialx · 3rd July 2004, 06:32 PM

All of the parts seem relatively easy to find, except the 1uf cap in the 5mm size in polypro. I can find the other three values, but I am only finding PE in the 1uf. Any mfgs or part numbers would be appreciated.

The 15.2K resistor looks like it can be arrived at by a 28K and a 33.2K in parallel. Gets ya' to 15.19K by my calculations.

JensRasmussen · 3rd July 2004, 07:31 PM

PE is just fine.

\Jens

cowanrg · 3rd July 2004, 10:02 PM

Quote:

Originally posted by marsupialx
All of the parts seem relatively easy to find, except the 1uf cap in the 5mm size in polypro. I can find the other three values, but I am only finding PE in the 1uf. Any mfgs or part numbers would be appreciated.

The 15.2K resistor looks like it can be arrived at by a 28K and a 33.2K in parallel. Gets ya' to 15.19K by my calculations.

as Jens said, PE is just fine. as for the resistors, i use vishays in my stuff, and mouser has vishays in 15K range, just get a few extra and since they are 1% tolerance, you should be good with 15.2K. i needed a 120ohm resistor before, so i just got a bunch of 121's and tested them out to 120 ohms.

btw, you still need to email me so i can send out some batteries

JensRasmussen · 4th July 2004, 07:51 AM

Hi,

I sorry but there is an error in the partslist. All values are correct, but the position is wrong....Please use the list in the manual I'll change til partslist ASAP

Sorry for any trouble this may give you

\Jens

JensRasmussen · 4th July 2004, 08:58 AM

Thanks to Bryan Pederson for bring this error to my attention.

I think the list is ok now, Bryan please report back when you have had time to check - thanks

\Jens

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2nd July 2004, 09:33 PM	#11
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	At minimum, you need some kind of summing circuit, whether that is an opamp or a simple resistive summer; otherwise, they will fight each other.

2nd July 2004, 09:42 PM	#12
marsupialx diyAudio Member Join Date: Mar 2004 Location: Kansas City	Potential compounded stupidity... Can the output buffer play a role in the afore mentioned summing, feeding both signals thru the one buffer? I'm way out on a limb, way past my comprehension of electronics on this, sorry.

2nd July 2004, 10:32 PM	#13
marsupialx diyAudio Member Join Date: Mar 2004 Location: Kansas City	I'm starting to get my head around what is needed to sum two crossovers. It's a mixer, without all the knobs. - Thanks -

3rd July 2004, 08:48 AM	#14
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	Grimberg Parts list as word file here : Partslist It's the best I can do. Tyler has an excel file with values. Tyler could you post it here? \Jens

3rd July 2004, 10:38 AM	#15
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	Parts list as PDF now ready : here \Jens

3rd July 2004, 06:32 PM	#16
marsupialx diyAudio Member Join Date: Mar 2004 Location: Kansas City	All of the parts seem relatively easy to find, except the 1uf cap in the 5mm size in polypro. I can find the other three values, but I am only finding PE in the 1uf. Any mfgs or part numbers would be appreciated. The 15.2K resistor looks like it can be arrived at by a 28K and a 33.2K in parallel. Gets ya' to 15.19K by my calculations.

3rd July 2004, 07:31 PM	#17
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	PE is just fine. \Jens

4th July 2004, 07:51 AM	#19
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	Hi, I sorry but there is an error in the partslist. All values are correct, but the position is wrong....Please use the list in the manual I'll change til partslist ASAP Sorry for any trouble this may give you \Jens

4th July 2004, 08:58 AM	#20
JensRasmussen diyAudio Member Join Date: Jul 2002 Location: Denmark - Jutland	Thanks to Bryan Pederson for bring this error to my attention. I think the list is ok now, Bryan please report back when you have had time to check - thanks \Jens