ruffrecords

Re: Passive Mastering EQ
« Reply #200 on: October 31, 2019, 05:45:04 PM »
It is definitely not dead. I had a lead customer who was paying for the materials and driving the specification. I won't go into details but suffice to say that relationship has now ended and I have returned their money.

The good news is that during testing I realised the 10dB range version tries to satisfy too many (non mastering ) requirements which makes including some features difficult. So, bottom line is we are now back a few squares and resetting back to the 6dB version so basically it is 0.5dB steps all the way.

Now I have sent off the Gerbers for the first poor man's tube mixer PCB I might even have a little time to look at the mastering EQ.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'


r2d2

Re: Passive Mastering EQ
« Reply #201 on: January 15, 2020, 10:28:06 AM »
Hello Ian
any good news about this cool Eq project  ?
; )  … cheers

Ps :
I Iprefer soldering cable  connections from rotary switch selector and caps/inductors board ,
because very much better and "diyable" in case of rotary switch replacement ….
it take a bit more time in assembly ,
but so less in case of repair , and not new pcb required ,
…desoldering 12 or more rotary switch pins from a pcb sound like a bad "nightmare",
overall when very little "room" is available between pcb pads…. , very easy to broken them….
(..had so very bad experiences with Elma on Focusrite ..)
« Last Edit: January 15, 2020, 11:45:30 AM by r2d2 »
..... Cracking D.Vader Firewall ...  II-)

ruffrecords

Re: Passive Mastering EQ
« Reply #202 on: January 15, 2020, 03:37:57 PM »
@R2D2

No news right now. I am very busy working on the poor man's tube mixer and the Mark 3 tube mixer. But I will ge around to this before long. A lot of it is done but skewed towards one particular clients needs. I just need to get it basically on track again.

I understand your point about about PCB mounted switches. However for the connections to LC components I prefer not to do it this way because of the increased stray capacitance and inductance. However, there is nothing to stop you wiring to the LC PCBs if you wish.

This design uses a single resistor string that is common to all the bands of the EQ. This means that all the level switches are connected together and I think this is more reliably achieved using a PCB. However, once again there is nothing to stop you making wired connections using rotary switches of your choice.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

r2d2

Re: Passive Mastering EQ
« Reply #203 on: January 16, 2020, 09:00:16 AM »
@R2D2

No news right now. I am very busy working on the……………………
 ……..your choice.

Cheers

Ian

thanks for reply Ian ,
only for curiosity…
this one is an old "version" ?
https://groupdiy.com/index.php?topic=65912.msg835039#msg835039
cheers
..... Cracking D.Vader Firewall ...  II-)

ruffrecords

Re: Passive Mastering EQ
« Reply #204 on: January 16, 2020, 12:36:50 PM »
thanks for reply Ian ,
only for curiosity…
this one is an old "version" ?
https://groupdiy.com/index.php?topic=65912.msg835039#msg835039
cheers
That is a completely different design. It is essentially a cost reduced version of my original 3 band Pultec design. Both are now open source and you can download Gerber files to make your own PCBs here:

http://www.customtubeconsoles.com/diy

in the OpenSourcePCBs folder.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'