Wiring LL5402 in Pultec???

Purusha · Dec 8, 2006

Heil DIY,

I wired my LL5402 like this and it didn't sound right. It sounds like HP filter :green:

What is wrong?

Do I need to add any extra resistors when wiring the LL5402?

Also how do you wire this tranformer to get -12dB and lower the input a bit.

capnspoony · Dec 8, 2006

Do you have the pcb boards .. because on mine you just had to drop em in...

I can take a peak in mine if you need me to tell you what goes where pin to pin

-richie

Purusha · Dec 8, 2006

I just found this PDF http://www.lundahl.se/pdfs/datash/5402.pdf and noticed
I miss understood which pin is which on my wiring :? :green:

Will try new wiring and report back.

Do you have the pcb boards .. because on mine you just had to drop em in...

No. I am after the custom Neve/Pultec combination EQ :wink:

gyraf · Dec 8, 2006

If in doubt, look at the pcb layout PDF's for the G-Pultec..

Jakob E.

Purusha · Dec 8, 2006

I rewired one 5402 like this and the HP filter effect is gone so I guess it's wired properly now

Purusha · Dec 8, 2006

Hmm, Ok maybe I am deaf but I really tried to hear the difference between one channel with LL5402
and one without and really couldn't. I struggled and sometimes I had a feeling ch. with 5402
sounds a bit more open then again nothing. I also noticed that ch. with 5402 is -2.5dB compared
to the one without. So I am asking you pro guys what is the actual benefit of using 5402 on the input?

capnspoony · Dec 8, 2006

My pultecs have a natural boost around 26Hz when I did a spectrum test on them. Certainly not a high pass filter.

richie

gyraf · Dec 9, 2006

So I am asking you pro guys what is the actual benefit of using 5402 on the input?

Floating Balanced, Isolated input. And at very-high levels, a bit of sound.

Jakob E.

Purusha · Dec 9, 2006

Floating Balanced, Isolated input. And at very-high levels, a bit of sound.

Oh, OK it looks like I was expecting too much of a sound change from this tranformer after all :? :wink:

gyraf · Dec 9, 2006

Naa, Lundahl's are never about sound change, but about cleanness..

Wiring LL5402 in Pultec???

Help Support GroupDIY Audio Forum:

Purusha

Well-known member

capnspoony

Well-known member

Purusha

Well-known member

gyraf

Well-known member

Purusha

Well-known member

Purusha

Well-known member

capnspoony

Well-known member

gyraf

Well-known member

Purusha

Well-known member

gyraf

Well-known member

Similar threads

Latest posts

Wiring LL5402 in Pultec???

Help Support GroupDIY Audio Forum:

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Well-known member

Similar threads

Join the conversation!

Join today and get all the highlights of this community direct to your inbox. It's FREE!