DBX 160XT Input Transformer

[Sisu MT]

I've found the 7 page PDF with the 160XT schemos, but they are missing part of the input power stage. Anyone mind sharing what the specs are on the input transformer? Got a dead one here. Thx!

 

[pvision]

It's about ± 17 volts. It's hard to find a replacement that fits nicely - a toroid might be a good answer

 

[Sisu MT]

It's about ± 17 volts. It's hard to find a replacement that fits nicely - a toroid might be a good answer

Super, thanks for the input!

 

[Script]

Input Power transformer, right?

Max clearance is 57 mm by 36 mm.

You do not want the transformer to touch the heat sink and also need to add rubber washers so as to not make it touch bottom and top plate.
Moreover, need to remember that the bottom lid has been designed to slide out sideways.

Several old Behringer units use transformers that look similar and might fit. Specs might differ though. Maybe worth a look ..

 

[Sisu MT]

Input Power transformer, right?

Max clearance is 57 mm by 36 mm.

You do not want the transformer to touch the heat sink and also need to add rubber washers so as to not make it touch bottom and top plate.
Moreover, need to remember that the bottom lid has been designed to slide out sideways.

Several old Behringer units use transformers that look similar and might fit. Specs might differ though. Maybe worth a look ..

Thanks for the correction, yes, power transformer. DBX was definitely playing some Tetris finding a way to squeeze that thing in sideways and mount it to the side panel. Well noted about using rubber washers and not letting the transformer touch the chassis. I'm going to do some searching for this today and will post links and continue to document the journey

 

[pvision]

Ah, I was thinking about the 160X. The XT in the later-style case is a nightmare for finding transformers to fit

I should have some 110V ones in my transformer box but shipping & etc will be expensive from the UK

 

[Script]

Here's a picture of a 160XT transformer and the metal frame of an old Behringer unit power transformer next to it Almost identical in height, width and depth.

I wouldn't even be surprise these two transformers came from the same factory. Early Behri units are a clone of what?

 

[Sisu MT]

Here's a picture of a 160XT transformer and the metal frame of an old Behringer unit power transformer next to it Almost identical in height, width and depth.

I wouldn't even be surprise these two transformers came from the same factory. Early Behri units are a clone of what?

Thanks @Script. Looks like @pvision may have been referencing the 160X trafo specs. Would you mind letting me know the voltages coming off the secondary of the 160XT trafo? Not sure who Behringer ripped off on this one, but if you said DBX, i wouldn't be surprised. (-;

 

[Sisu MT]

Ah, I was thinking about the 160X. The XT in the later-style case is a nightmare for finding transformers to fit

I should have some 110V ones in my transformer box but shipping & etc will be expensive from the UK

Thanks @pvision, appreciate the offer. Since @Script has a 160XT at hand, I want to confirm the secondary voltages as they may differ from the 160X. Once confirmed, if I'm having difficulty sourcing one that fits in the chassis, i'll give you holler. Thx!

 

[Script]

I have two units awaiting maintenance here.

Measured at IC pins
+15.08 DC
-14.85 DC

Measured at TX to PCB (T101?) under load when hooked to the PCB.
20.64 AC to CT to 20.56 AC

A second unit measured
21.34AC to CT to 21.32AC
here the LED meter board was disconnected and the caps in the PSU are old.

 

[Sisu MT]

I have two units awaiting maintenance here.

Measured at IC pins
+15.08 DC
-14.85 DC

Measured at TX to PCB (T101?) under load when hooked to the PCB.
20.64 AC to CT to 20.56 AC

A second unit measured
21.34AC to CT to 21.32AC
here the LED meter board was disconnected and the caps in the PSU are old.

Awesome, thanks @Script! If I'm reading the PCB right, T101 is where the secondaries connect to the PCB, so I'm interpreting this as I need a 40V CT (20-0-20) trafo. Now to find one with the right dimensions!