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New FCS EQP1A
Old 30th December 2019
  #1
New FCS EQP1A

>Dual mono
>Shelf/Bell switch on Hi Boost
>Dual I/O paths, transformer and IC
> Each transformer has it's own bypass, for 4 total
>The filter uses 2 FCS discrete op amps per channel
>Transformers used are FCS custom CT-2181 and CT-2736
>New frequencies, 40Hz and 4kHz

I was floored by the sound with the solid state I/O, so clear and immediate.
Switch back to transformer mode for smooth coloration.

Shoot me an email or PM if you are interested!

Thanks,
Roger
Attached Thumbnails
New FCS EQP1A-eq_front_12_29_19_sm.jpg   New FCS EQP1A-eq_inside_12_29_19_sm.jpg  
Old 30th December 2019
  #2
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Wiggy Neve Slut's Avatar
 

Very nice Roger.. pots stepped?

Price?

Cheers
Wiggy
Old 31st December 2019
  #3
Quote:
Originally Posted by Wiggy Neve Slut View Post
Very nice Roger.. pots stepped?

Price?

Cheers
Wiggy
Hi Wiggy,

The potentiometer version uses non-stepped pots.
We can make them with Elma controls if the coarse resolution doesn't bug you like it does me... I mean 23 values + Zero? That is roughly 4.5 bit resolution...

But as long as the switch clicks land where we need them we are good, right?

We figure that the pot version will go out at $3500

Film capacitors are hand matched and the inductors are matched in pairs, so the L/R tracking is quite good.

Best regards,
Roger Foote
[email protected]
Old 13th January 2020
  #4
Just received feedback on this EQ, and it was very positive:
Quote:
It overall is unexpectedly better than I thought it was going to be.

I thought transformerless was going to be my preferred setting. However, I found that I really love the sound of the transformers in the path, especially the input. It adds weight to the source where I want it, which I seldom find with other transformers. In general, the thing that I like about your equipment is that it captures the lower/lower-mid register of sources compared to other manufacturers. Just putting most other gear in-line seems to high-pass filter the source! Not cool!
Old 15th January 2020
  #5
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Kronos147's Avatar
Looks incredible!

All stepped would be awesome for stereo bus work!

Congrats!
Old 16th January 2020
  #6
Quote:
Originally Posted by Kronos147 View Post
Looks incredible!

All stepped would be awesome for stereo bus work!

Congrats!
Thanks Kronos147!

Yup, we do that!
Although, I hate to think of the missing sweetspots with low rez switches like Elma A4-SERB(n)-THT, which has 24 steps.

Now, the Elma 47 step switch would be nicer as long as we can find proper resistor values which can be a pain even with 24 step switches...

What we need here is a switch with 2 series Rs in each stop. Then we are free to set up any kind of control with much better resolution.
Old 17th January 2020
  #7
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Kronos147's Avatar
I want to hear it.
Old 18th January 2020
  #8
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Crazy4Jazz's Avatar
 

Stereo. Good call.
Old 19th January 2020
  #9
Hi all,
As soon as I can afford the metalwork I will be building one to send over to Larry at Silvertone Mastering, as he wants to check it out.

If that goes well, we might be able to send it to other interested parties as a demo...

We wanted a stereo (dual mono in one case) EQ for bus work, and this is what we came up with...

I am also actively doing layout work for a conventional EQP1A clone along with our new main compressor, the P4S MKII which features a wet/dry blend control, passive germanium diode clipper and 2 sets of switchable output transformers....

Best regards,
Roger

Last edited by RogerFoote; 19th January 2020 at 05:08 PM.. Reason: Forgotten items
Old 19th January 2020
  #10
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Silvertone's Avatar
Thanks Roger, it will be interesting to hear this. It looks great.

I really miss my pair of solid state Pultec EQP1A3’s.


Quote:
Originally Posted by RogerFoote View Post
Hi all,
As soon as I can afford the metalwork I will be building one to send over to Larry at Silvertone Mastering, as he wants to check it out.

If that goes well, we might be able to send it to other interested parties as a demo...

We wanted a stereo (dual mono in one case) EQ for bus work, and this is what we came up with...

I am also actively doing layout work for a conventional EQP1A clone along with our new main compressor, the P4S MKII which features a wet/dry blend control, passive germanium diode clipper and 2 sets of switchable output transformers....

Best regards,
Roger
Old 21st February 2020
  #11
Second unit in this line built.
This one is in anodized black panel with light gray text and scales.
Probably have it ready by next Monday...

Pics will follow.

Oh, also we ran out of the FCS Steel 2736 transformer and are using Cinemag CMOB1-L, Cinemag's largest core, same size as the FCS 2736, except these Cinemags are 50% Nickel and 50% Si Steel. Very smooth!

Best,
Roger
Old 23rd February 2020
  #12
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Silvertone's Avatar
Quote:
Originally Posted by RogerFoote View Post
Second unit in this line built.
This one is in anodized black panel with light gray text and scales.
Probably have it ready by next Monday...

Pics will follow.

Oh, also we ran out of the FCS Steel 2736 transformer and are using Cinemag CMOB1-L, Cinemag's largest core, same size as the FCS 2736, except these Cinemags are 50% Nickel and 50% Si Steel. Very smooth!

Best,
Roger
I bet it looks great in black as well. Looking forward to seeing a picture.

Those Cinemag transformers are great. I bet they sound really good in there.

Great work Roger.
Old 4 weeks ago
  #13
Hey Larry,

Had some delays, every time I make plans, something pops up

Had the second unit built for a couple of weeks now.
But I will try to get some pics ASAP, and get it shipped.

Thanks!
Roger
Old 4 weeks ago
  #14
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Silvertone's Avatar
Quote:
Originally Posted by RogerFoote View Post
Hey Larry,

Had some delays, every time I make plans, something pops up

Had the second unit built for a couple of weeks now.
But I will try to get some pics ASAP, and get it shipped.

Thanks!
Roger
No problem Roger, been super busy myself. I’m in the middle of doing a compilation album for Tony (Levin) right now.
Old 4 weeks ago
  #15
Larry,
Cool!
A new Tony Levin album is great news indeed!
Is there a title yet?

Best,
Roger
Old 2 weeks ago
  #16
Got EQP1A #002 done...
See the attached picture.

This time it's black anodize with light gray lettering done with digital laser printing.
Attached Thumbnails
New FCS EQP1A-eqp1a_ii_sm.jpg  
Old 2 weeks ago
  #17
Lives for gear
 

Quote:
Originally Posted by RogerFoote View Post
Oh, also we ran out of the FCS Steel 2736 transformer and are using Cinemag CMOB1-L, Cinemag's largest core, same size as the FCS 2736, except these Cinemags are 50% Nickel and 50% Si Steel. Very smooth!
Nice looking piece of gear. How much of a tonal difference is there going from an all steel core to the 50/50?
Old 2 weeks ago
  #18
Hi johnnyc,
The 2736 Si Steel cores will saturate in a more obvious way.
The 50/50 kind of gently slopes into saturation, more smoothly where the steel saturatesmore abruptly.

The other parameters between the Cinemag and FCS are identical, core size, bobbin, wire guage etc...

Outside of saturation, they behave in a very similar way.

Best,
Roger
Old 2 weeks ago
  #19
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vincentvangogo's Avatar
 

Quote:
Originally Posted by RogerFoote View Post
Hi Wiggy,

The potentiometer version uses non-stepped pots.
We can make them with Elma controls if the coarse resolution doesn't bug you like it does me... I mean 23 values + Zero? That is roughly 4.5 bit resolution...

But as long as the switch clicks land where we need them we are good, right?
...
Is it not possible to design a push/pull control that goes from stepped to non/stepped?
Old 2 weeks ago
  #20
Quote:
Originally Posted by vincentvangogo View Post
Is it not possible to design a push/pull control that goes from stepped to non/stepped?
Hi vincentvangogo,
We want switches, not detented potentiometers.
We have been underwhelmed by the quality of the detented pots.

So, we offer pots or switches, switches are considerable extra expense.

Best,
Roger
Old 2 weeks ago
  #21
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Silvertone's Avatar
Looks great in black Roger. If it sounds half as good as it looks you’ll have a winner on your hands.

Mild saturation is better than full on (all at once) IMHO, especially for gain make up.

The new Levin record is called Tony’s Picks... I tried to stay true to Bob Ludwig and Trevor Sadler’s work they did on the original versions. Tony likes these even better so I am super happy with how it turned out.




Quote:
Originally Posted by RogerFoote View Post
Got EQP1A #002 done...
See the attached picture.

This time it's black anodize with light gray lettering done with digital laser printing.
Attached Thumbnails
New FCS EQP1A-1dacc60a-4c3e-437f-84a3-599eed2357a7.jpg  
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