[Zenvota]

Does it matter to ground the neutral on the secondary side VS down the AC cable line at the receptacle?

either should be fine

@One and a half or @Speedskater Is this adequate for a GFCI? Transformers wired 120v in 120v out unbalanced

https://www.amazon.com/dp/B01N6AEEIK/ref=cm_sw_r_cp_apa_i_nIRfDb5ESHCX6

 

[One and a half]

either should be fine

@One and a half or @Speedskater Is this adequate for a GFCI? Transformers wired 120v in 120v out unbalanced

https://www.amazon.com/dp/B01N6AEEIK/ref=cm_sw_r_cp_apa_i_nIRfDb5ESHCX6

For a grounded 120V neutral at the transformer, the GFCI from Amazon is OK, presume it's 6mA tripping.
BTW, the neutral must be grounded at the transformer, not anywhere downstream, against code.

 

[bequietjk]

Contacted Albert Porter for an Isolated Ground Ivory Porter Port and it's on the way now SUPER excited. Have not officially decided if I should put it on the Topaz connecting my PC or the Topaz connecting my DAC/Iso Regen.

Probably the DAC ^.-

 

[bequietjk]

500VA MGE Topaz sounding VERY good to my DAC with the Porter Port. I will say this though, the hospital grade receptacle that comes with the Topaz is built like a tank! But the Porter Port is destroying it with dynamics and presentation.

 

[bequietjk]

Picture of the oil cap

 

[Energy]

any plans of wiring it in balanced mode and removing the polypropylene cap?

 

[bequietjk]

any plans of wiring it in balanced mode and removing the polypropylene cap?

I'm VERY curious about balanced configuration but I am just beginning in this realm of audio and DIY. So taking on that will be a challenge as there is much research to do before I fully understand what it means to have a balanced device and whether it meets my needs. Of course, better audio is always part of the pursuit but for now the way it is setup is good for me.

I remember reading a few testimonials here and there about wiring the Topaz up for balanced and came across some negative experiences. Postitive ones too, but the negatives kept me from looking further into it.

 

[FiGuY1017]

Not to many inpressions so ill add that since i added a 32 series topaz into my headphone system the changes have been dramatic. I already had good power and this thing runs with no noise but the increase in depth and blackness and the contrast between instruments is incredible.

 

[bequietjk]

Has anyone had any lasting, positive results wiring the Topaz for balanced?

 

[ray-dude]

Absolutely! In made my humming basically go away, runs MUCH cooler, and at least it feels like less stress (that may just be the lack of humming). Big positive difference for me

 

[oneguy]

Out of pure curiosity and inability to pass up a good deal, I bought a series 60 Topaz unit.

This particular unit can accept 5 different input voltages and has 2 output voltage options. Those amount of options are mind boggling given what I know about the jumper configuration for the -31 models. I’m not quite sure how they managed that. We’ll see next week though when it arrives. I’ll post internal pics since I couldn't find much on the internet about the -69 model. AFAIK, it is the only model outside of the well known -31 and -32 models with 0.0005pF capacitance.

 

[oneguy]

FedEx must have been working overtime for thanksgiving. They got me the transformer today.

-69 core:
8.25” long
7.5” wide
6.25” tall

-31 core
7” long
7.25” wide
6.25” tall

The -31 is in the background. It looks taller because it’s on a wooden platform so I can slide to around easier.

 

[bequietjk]

Hey Topaz-heads. I had a couple concerns about my own Topaz, especially the 1KV Topaz. It does give off a hum that i would love to take care of, and im wondering if wiring it for balanced would help this. Additionally, i have a single receptacle on the output of the 1KV. Should I be careful of what connect to a balanced version of the Topaz? I read that some components are not designed to play with balanced power.

Is there a section in this thread that shows how to wire up for balanced?

Also, since i have my DAC connected to my 250V Topaz i wanted to ground the shielding at the Topaz end. Has anyone seen benefit from this?

Best regards!

 

[bequietjk]

Here is how it is setup

 

[ray-dude]

I can only speak to my Topaz units here in the US (110VAC), but changing them to balanced made 95%++ of my hum go away, and the units run MUCH cooler. A++.