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Converting stereo single ended to balanced mono?

Hi, I have three Thiel 3.5 stereo equalizers (bass boosters). These are single ended only. I was wondering about the benefits of trying to convert two of them to balanced mono operation. Is it possible? Is it worth it? What are the options for doing this? What are the pros and cons of these options? Are there any other upgrades that might be considered if and when these conversions might be done?

https://www.stereophile.com/content/thiel-cs35-loudspeaker-measurements

As always thanks in advance.

unsound
unsound OP
7,332 posts
 

I’ve just acquired a pair of mono XLR input and output JP Labs Golden Flutes Bass Alignment Filters.....for KEF 104’s. JP Labs though prompt and courteous couldn’t offer me any help with modifying these things for the Thiel 3.5’s. They also suggested that the case work might need to be sacrificed towards that endeavor, something that I am willing to consider.

Armed with a Thiel 3.5 eq reverse engineered schematic & interior photo, two (actually 3) OEM stereo RCA Thiel 3.5 bass equalizers, and now a pair of XLR mono Golden Flutes for different speakers, what might be the best way towards getting true balanced bass eq for my Thiel 3.5’s? What might the parts costs be? What might the labor costs be? And who might be willing to the work?

As always, thanks in advance!

unsound OP
7,332 posts
 
bump?
imhififan's avatar
imhififan
2,210 posts
 
@unsound
Please take a look the Marchand bass equalizer

https://www.marchandelec.com/wm8-bass-equalizer.html

Contact them and see if they can provide something you need.

unsound OP
7,332 posts
 
@hififan, thank you for your contribution. I have to wonder if the advantages of all that customization is overkill for my application, and if inserting all those op amps into the chain for the sake of balanced operation would be better than the simpler single ended oem units?
unsound OP
7,332 posts
 

Considering that the input would already have one inverted signal, I was wondering if just using one XLR  with the the ground of two RCAs tied to one pin and just a positive leg running to one RCA and the negative running to a second RCA, and then inputting the two separate RCAs to what would otherwise be the channel inputs of the other wise stereo inputs of the eq, and then having another split cable with two RCAs connected to an XLR connection, now converting two single stereo single ended stereo eqs into two mono balanced eqs would work? Am I missing something?

 

 

 

 

 

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