Zen v4. wiring problems

[porfi4ever]

Hi guys, I'm ready to start wiring my Zen v4 but I' m afraid to damage my amp. Can anyone, please, tell me with a lot of details how to wire my transfs.( primary and secondary). If I'm not wrong red and grey wire goes to rectifier but what happen to yel/blue? and what about blk/wht , brn/orng.

[jleaman]

Information about the manufacture of the transformer would help. Mabey a pic also.

[porfi4ever]

Originally posted by JasonL
Information about the manufacture of the transformer would help. Mabey a pic also.

Hello JasonL, Plitron with two 18v secondary windings and 300 va.

[porfi4ever]

pics.

[Kilentra]

I'm using a recent 750VA Plitron with my Zen V4. The brown and black wires are tied together and connected to AC hot through a thermistor and fuse. The white and orange wires are connected to AC neutral. To wire the secondaries in series tie the blue and yellow wires together; connect the gray and red wires to the AC points on your bridge rectifier. (Mine's using 35V secondaries in parallel so I cannot verify that... please check the documentation).

[porfi4ever]

Originally posted by Kilentra
I'm using a recent 750VA Plitron with my Zen V4. The brown and black wires are tied together and connected to AC hot through a thermistor and fuse. The white and orange wires are connected to AC neutral. To wire the secondaries in series tie the blue and yellow wires together; connect the gray and red wires to the AC points on your bridge rectifier. (Mine's using 35V secondaries in parallel so I cannot verify that... please check the documentation).

Where I have to connect blue / yellow? Are there differences in performance to wire the secondaries in series or parallel?Thanks Kilentra for your response.

[moe29]

From the Zen V4 article the Unregulated Power Supply example
shows the secondaries wired in series to double voltage. So you
want to wire in series.

Tie the blue and yellow wires together like Kilentra said. They
don't connect anywhere else. Just insulate them to make sure
they don't short to the chasis.

I reccomend reading the Balanced Line Stage article where
Mr. Pass gives directions for wiring up 2 transformers to one
AC supply. The colors may not be the same, but it'll give you an
idea how to do it.

If still unsure, find an electrition or someone very
experienced to walk you through it. Your dealing with
potentially leathel voltages and should know exactly what
you're doing to be safe.

[Kilentra]

To wire the secondaries in series you need to tie the blue and yellow (opposite ends of the secondaries) together. In my amp, the gray and yellow are tied together at one end of the bridge, and the red and blue are at the other. The difference is that series connection gives you the sum of the secondary voltages (2x18v in your case) and parallel connection gives you just one secondary's voltage, but with twice the current capability (35v in my case).

[porfi4ever]

Hi Kilentra, thanks again for your response. Talking about primaries I assume the input of first transformer is wired in parallel with primaries of the second one: blk+blk+brn+brn connected to the cold side of AC line and wht+wht+orn+orn to hot side of AC line. Another question , do I need other bridge rectifier( already have two for each channel) but I saw a post from another guy using one bridge rectifier for ground.

[Kilentra]

That wiring arrangement should work fine. Pass suggests isolating the grounds of the two channels by connecting them to opposite sides of a bridge rectifier. That's a wonderful idea, but I forgot to try it; my amp works fine anyway. If you have ground loop problems, connecting the grounds through the extra bridge might help.