GroupDIY

Project Specific Discussions => Filters/Equalizers => Topic started by: pahstah on August 08, 2017, 06:17:17 AM

Title: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on August 08, 2017, 06:17:17 AM
Hi Guys,

This is my 500 version of "3 2 eq", designed to be very cheap or little more expensive in the in out part of the circuit.
a part for some minor mistakers the proto is working nicely in the eq part. About the input output part i've tested it only with that 1246 in that 1646 out and it works great.

I have tested both the 325 style output and the transistor based input, they are set to give -6dB on input and +6dB for output. they both work great and i am really satisfied with the outcome.
If interested PM me.

Paolo

(https://s18.postimg.cc/cs5d9yo2x/FBE_All.jpg)

(https://s18.postimg.cc/ddxllm3qx/fullsizeoutput_12a2.jpg)

(https://s17.postimg.cc/ow74p8z2n/DSC0108_2.jpg)

Mouser Carts:

EQ pcbs:

FBE-02    https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=e06f22df13
FBE-32    https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=3af6a1dc04
FBE-242 https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=5DDFBCC759

IN/OUT pcb options:

1246 input:     https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=8642e4c00f
1646 output:  https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=b3c6d5f768

325 output:     https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=9ca08c20ed
IMPORTANT: this cart does not include the DOA and the transformer! the DOA needed is in 2520 format and the transformer is EA-2503 with can be found at capigear

-6dB transistor Input (2 carts ):
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=e3e191a46f
and
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=64d6ea18e8


Building Guides:

FBE-02 Building Manual: https://drive.google.com/open?id=1YqNCwoKYRI3x5gFCGs_JK_hgpDjKW5uw

FBE-32 Bulding Guide:  https://drive.google.com/open?id=1FbdyEmJFojiQRXzKJ-qn-FiEtOAZfHxo

IN/OUT Guide https://drive.google.com/open?id=1HGkCRVqqohazD0V1JZVQ8n6Rm_TvAUgN
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on August 08, 2017, 10:50:01 AM
Nice, interested!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: Meyer on August 09, 2017, 05:34:31 PM
Wow looks great, cool that you included the filters. I'm interested!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: Rocinante on August 10, 2017, 01:58:47 AM
Paolo,
Awesome. The i/o pcb seperated  from the filters is great. Id be curious as to what other circuits one could use with the '32'.  So the only connections between filter pcb and io  are power, audio i/o and ov?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on August 10, 2017, 05:19:46 AM
Paolo,
Awesome. The i/o pcb seperated  from the filters is great. Id be curious as to what other circuits one could use with the '32'.  So the only connections between filter pcb and io  are power, audio i/o and ov?

Hi Rocinante,

when I started designing the pcb i soon realized that i would have a lot of pcb space unused so i decided to go a little further and design an i/o pcb so that i could later adopt it for other types of eq without the need to deisgn a input output pcb again. then i thought that it would have been a good idea to put a connection for a trimpot. so the connections between the pcbs are in, out, power snd 0v, and also a connection for a trim. but be aware that this trim only works with the DOA output wich is basically an a p i 325 output.
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: ruffrecords on August 10, 2017, 03:45:44 PM
How do you squeeze ten controls onto a 500 series front panel?  Is is even possible to get adult fingers between the controls?

Cheers

Ian
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on August 10, 2017, 04:21:16 PM
How do you squeeze ten controls onto a 500 series front panel?  Is is even possible to get adult fingers between the controls?

Cheers

Ian

Ian,
you're right:that's a big problem and one of the major downsides of 500 series format. with this configuration however it is possible for adult fingers to set the pots by manipulate them by the tip. the problem arise with the pushbuttons, that's one of my mistakes: they're too deep. one of the changes i will make is to move them forward on the pcb so they stand a little taller, and i will move the hpf and lpf pots further away from the other pots.
ideally i should have chosen pots with 4mm shaft, so i could use narrower knobs but 50k rev log stereo are difficult to find.
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on August 13, 2017, 12:54:47 PM
Tx footprint for 2622?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on August 13, 2017, 04:58:33 PM
Tx footprint for 2622?

tx input footprint is for neutrik ntl1, then you have the choice of ne5534, or transistor circuit as in studer line in.
tx out is for 2503, DOA is for 2520 style opamp
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on August 14, 2017, 05:34:46 AM
Anticipating your thoughts om the different IO configurations when youve tried them out!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: beatnik on August 20, 2017, 05:13:00 PM
ideally i should have chosen pots with 4mm shaft, so i could use narrower knobs but 50k rev log stereo are difficult to find.

try ask Omeg UK, they can make custom parts
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on August 24, 2017, 09:48:59 AM
try ask Omeg UK, they can make custom parts

Thank you beatnik, but i think that with some minor trick i can fix the issue
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 05, 2017, 08:53:49 AM
at this point i haven't tested the alternative in and out but i have worked out the mockup for the frontplatm, what do you think? i've also found some smaller knobs so it is easier to press the button between the knobs. but in the final pcb design i will have the knobs slightly farther apart and the pushbuttons will poke out more.

Paolo
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 05, 2017, 09:05:48 AM
Nice, but id prefer white text on black aluminium  8)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: mdmitch2 on September 05, 2017, 10:03:26 AM
I'm interested!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 05, 2017, 01:29:51 PM
Nice, but id prefer white text on black aluminium  8)

Yeah, me too. What about a printed plastic self adhesive sheet to stick on the front panel? It isn't as cool as a powder coated and silkscreened front panel but not bad either, and it is surely cheaper. 
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 06, 2017, 02:51:52 AM
Id rather pay for the silkscreened one tbh; i appreciate good looking modules, and this looks like a module i could need 4-6 of ;) i havent seen such a flexible 4 band eq with sweepable filters in a single slot format, kudos!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 06, 2017, 06:00:38 AM
Id rather pay for the silkscreened one tbh; i appreciate good looking modules, and this looks like a module i could need 4-6 of ;) i havent seen such a flexible 4 band eq with sweepable filters in a single slot format, kudos!

maybe white silkscreen on black anodized front panel could be a solution
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 06, 2017, 06:36:57 AM
Yes. Not sure how anodized compares to powdercoated: capi frontplates are anodized and silkscreened while soundskulptor modules are powdercoated and silkscreened? Just to compare with some modules i own.

I did a panel through schaeffer/fpe and it turned out gorgeous; powdercoated black (no silkscreen as all fonts are engraved, leaving a nice gray contrast to the black powdercoat, no infill needed)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on September 06, 2017, 07:17:02 AM
Hello Paolo

Nice work as usual !

I like the separated I/O pcb option too, because by removing it I should fit this eq in my modular Studer desk, I have spare room /blank modules.
Is it possible to only use eq pcb, unbalanced I/O with 22v rail (or +/-11v), nominal level around -15dBu ?

Best
Zam
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 07, 2017, 04:16:09 AM
Yes. Not sure how anodized compares to powdercoated: capi frontplates are anodized and silkscreened while soundskulptor modules are powdercoated and silkscreened? Just to compare with some modules i own.

I did a panel through schaeffer/fpe and it turned out gorgeous; powdercoated black (no silkscreen as all fonts are engraved, leaving a nice gray contrast to the black powdercoat, no infill needed)

here's a photo of three solutions

(https://s26.postimg.org/n5tovw8o9/IMG_5844.jpg)


1st module aluminium anodized and silkscreened (this is an old capi module, now i think jeff does them powder coated and silkscreened), 2nd module is api powder coated and silkscreened, 3d module is printed self adesive plastic
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 07, 2017, 04:32:29 AM
Hello Paolo

Nice work as usual !

I like the separated I/O pcb option too, because by removing it I should fit this eq in my modular Studer desk, I have spare room /blank modules.
Is it possible to only use eq pcb, unbalanced I/O with 22v rail (or +/-11v), nominal level around -15dBu ?

Best
Zam

Thanks Zam,

the eq portion of pcb has connections for +/- supply, unbal input and unbal output, so this should work
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on September 07, 2017, 08:27:33 AM
Thanks Zam,

the eq portion of pcb has connections for +/- supply, unbal input and unbal output, so this should work

Hi

Is your Vref (0v) hooked to any mechanical/frame part ? I ask because in real my supply is 0/-22, local floating ref is -11v, but connection to frame/ground/earth is at 0 rail ("virtual" V+, 11v).

Off topic: how is going your amazing modular console? any update fitting the automation ?

Best
Zam
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 07, 2017, 08:42:34 AM
Hi

Is your Vref (0v) hooked to any mechanical/frame part ? I ask because in real my supply is 0/-22, local floating ref is -11v, but connection to frame/ground/earth is at 0 rail ("virtual" V+, 11v).

Off topic: how is going your amazing modular console? any update fitting the automation ?

Best
Zam


Zam, there are no connections between 0v and metal.

about my console, i'm still in the developing fase. metalwork is my biggest problem.

(https://s26.postimg.org/x5vxxs2y1/Full_Size_Render_14.jpg)

(https://s26.postimg.org/kfrpkouzt/IMG_5849.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 22, 2017, 12:28:10 PM
Any news?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 22, 2017, 12:55:04 PM
Any news?

i have tried both the output and input options and after some tweaking they work fine, now i have to rework the pcb a little in order to insert the modifications it needs.
the main downside is that for the 50k reverse log pot to arrive there's a 12 or 14 weeks of waiting  :-\ .... so i have ordered 240 of them and they will be ready around christmas. i wondered if a should order more of them but i don't know how many people will be interested.
in the meantime since i've ordered those 50k rev log pots i said to myself why not to design the 82e02  and the 242 (less the filters) for the eq part? so i did, pcb for the 82e02 should arrive briefly.
i will post some pictures tomorrow

Paolo
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 23, 2017, 03:40:43 AM
But the filters are what makes the 242 so nice, dont leave them out :)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 23, 2017, 06:27:40 AM
But the filters are what makes the 242 so nice, dont leave them out :)

Yes, but there's not enough room in the 500 format for that  :'( :'(
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 23, 2017, 06:32:57 AM
Some images:

Studer Line In
(https://s26.postimg.org/5pxtnr2pl/Studer_In.jpg)

325 line out
(https://s26.postimg.org/dz9p25wft/325_Out.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: peterc on September 23, 2017, 07:01:42 AM
Looks like a great project!

For high density panels like this, I have been using these knobs. It makes access so much easier

http://za.rs-online.com/web/p/products/4664989/



(https://i.imgur.com/YbynC2o.jpg)

Peter
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 23, 2017, 08:13:21 AM
Looks like a great project!

For high density panels like this, I have been using these knobs. It makes access so much easier

http://za.rs-online.com/web/p/products/4664989/



(https://i.imgur.com/YbynC2o.jpg)

Peter


Thank you Peter, nice idea.
although the problem is with switches accessibility, the knobs that i've decided to use are 10 mm wide and only for knurled 6mm shafts.

maybe pots with concentric shafts for gain/frequency could be a solution... i'll look into that
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on September 23, 2017, 09:01:30 AM
maybe pots with concentric shafts for gain/frequency could be a solution... i'll look into that

Hi
You will then have room for a Q setting pot   8)

Best
Zam

Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 23, 2017, 11:11:29 AM

Sonething like this:

(https://s26.postimg.org/8f14i6u6h/IMG_5885.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 23, 2017, 11:14:53 AM
A bit crowded but i think it can be done.  Also not so cheap, the concentric pots are 14 pounds each and there are 4 of them. Ouch!!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on September 23, 2017, 12:06:56 PM
I was actually joking  :)
But if it can be done, why not  ;)
So now... you can use the added pot with integrated push/pull switches, in place of button  8)
And at the end you can call it HARI32 (High Analog Reshape Instrument)  :-X

Best
Zam
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 24, 2017, 02:44:47 AM
I think the panel looks great, Im all for cramming as many features into a module as possible. 500 series is for saving space, no? If space aint at a premium you could always make a 19'' unit.
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 26, 2017, 12:40:33 PM
(https://s26.postimg.org/dz9yhzwtl/FBE32-_Three_Colors.jpg)

any color you like?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 26, 2017, 03:44:27 PM
I mean, if the use of concentric pots frees up panel real estate to include Q control, I say go for that... I dont mind the more expensive pots...
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 28, 2017, 03:27:32 AM

about the 242 with filters in 500 format. it can be done but i need to order some concentric pot in 9mm format and the pcbs won't fit with the input output pcbs i made so it needs a new pcbs design
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on September 28, 2017, 10:50:47 AM
Cool! Are you up for that?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on September 28, 2017, 11:29:16 AM
i'm already working on it  8)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 04, 2017, 02:38:59 PM
A newborn : Mr. Brown



(https://s1.postimg.org/3e2drkk7fj/IMG_5920.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on October 04, 2017, 03:29:06 PM
A newborn : Mr. Brown

So... a new name for you eq line !! The RD eq
Reservoir Dogs  8)
best
Zam
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 05, 2017, 05:54:16 AM
So... a new name for you eq line !! The RD eq
Reservoir Dogs  8)
best
Zam

 by the way which one is Pink?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: zamproject on October 05, 2017, 07:10:09 AM
by the way which one is Pink?

Steve Buscemi  8)
https://en.wikipedia.org/wiki/Steve_Buscemi (https://en.wikipedia.org/wiki/Steve_Buscemi)

Best
Zam
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on October 05, 2017, 04:18:50 PM
Now we are talking!! Can we have a peek at the guts?

Edit: was confusing the ffbe-32 for fbe-02. No filters after all?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 06, 2017, 05:07:46 AM
Now we are talking!! Can we have a peek at the guts?

Edit: was confusing the ffbe-32 for fbe-02. No filters after all?

the 02 has the same knobs pattern as the 32 but obviously doesn't have the filters because of the Q pots.
sounds really good though.
i am studying the 242 version with filters BUT i am looking for an alternate solution for dual stacked potentiometers so i can squeeze everything in a 500 series front panel (how i wish they'd have made it a 4 unit instead of 3 unit back in the days).
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 06, 2017, 05:19:17 AM
(https://s1.postimg.org/2asmgm61q7/IMG_5915.jpg)

guts
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: fragletrollet on October 06, 2017, 06:26:31 AM
Beautiful!
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: samguaiana on October 20, 2017, 09:27:39 AM
How do I get my hands on a pair of these?!
Also is the Brown an SSL???  :D
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 21, 2017, 08:03:36 AM
How do I get my hands on a pair of these?!
Also is the Brown an SSL???  :D

I'm thinking about selling these as partial or full kits. I haven't decided yet.
Mr. Brown is similar to an ssl 82e02 eq less the filters and the gainpot is also different because i couldn't find a center tapped pot with a 9mm footprint. It also doesn't have a center detent  but i've tried the eq and i've found that i don't really need these features.
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: samguaiana on October 21, 2017, 09:57:01 AM
If you ever do decide to sell these as full kits, count me in! Also if you ever do a mega affordable 80b EQ I'd be in heaven.
Have you thought of maybe push button HP and LP filters on the SSL? Like a good clean-up 80hz and a smooth 12k. But I know that faceplate is tight haha.
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 27, 2017, 05:43:20 AM
If you ever do decide to sell these as full kits, count me in! Also if you ever do a mega affordable 80b EQ I'd be in heaven.
Have you thought of maybe push button HP and LP filters on the SSL? Like a good clean-up 80hz and a smooth 12k. But I know that faceplate is tight haha.

the full kit price should be around 200-250 € for the harrison eq and 250-300 € for the ssl, depending on the front panel choice. also an 80b eq is possible.

Paolo
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: eriksunding on October 29, 2017, 05:25:40 PM
the full kit price should be around 200-250 € for the harrison eq and 250-300 € for the ssl, depending on the front panel choice. also an 80b eq is possible.

Paolo

Where can I order?
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on October 31, 2017, 03:52:47 AM
As soon as ai will be ready with the new pcbs I will let you know where to order
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on November 14, 2017, 08:24:56 AM
In this image you can see the two different versions of the s s l eq: the 02 on top and the 242 at the bottom
as you can see the pcbs have footprint for smd/through hole resistors, electrolytic and ceramic capacitors, film capacitors are wima fet are j112

(https://s33.postimg.org/436ko42j3/242-02.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on November 14, 2017, 08:28:20 AM
in this image you can see the front panels for 02 (brown) and 242 (black). front panel for 242 is aluminium anodized natural with digital print on it. the 02 is self adhesive paper printed with an inkjet.

(https://s33.postimg.org/3lg0lvzq7/242-02-front.jpg)
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: peterc on November 14, 2017, 03:58:37 PM
Man, these are just superb!

Well done. Makes me quite envious of my own skills......

Peter
Title: Re: FFBE-32 (Famous Four Band Eq)
Post by: pahstah on November 15, 2017, 04:38:34 AM
Man, these are just superb!

Well done. Makes me quite envious of my own skills......

Peter

Thank you Peter!!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: john12ax7 on December 01, 2017, 04:31:59 PM
Very nicely done.  For the pots are those Bourns 9mm? And where did you get tiny knobs?
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: Catrunes on December 02, 2017, 11:59:23 PM
im in for 2x 242 partial kits when you get them together. ;D ;D ;D
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on December 03, 2017, 01:27:05 PM
Very nicely done.  For the pots are those Bourns 9mm? And where did you get tiny knobs?


Cliff FC7249, 10mm diameter black anodized aluminium for 6mm knurled shaft.
there's a siam knob, s111 i believe, that has a 10 mm but is for 4mm shaft.
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on December 03, 2017, 01:31:24 PM

I'm putting together the first batch of eq, it will be 8x FBE-32, 8x FBE-02, 8x FBE-242.

i will add details and photos tomorrow
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on December 10, 2017, 03:37:17 PM
These are the images of the three eqs.
The front panels are digitally printed.
FBE-02 and FBE-242 have the option to use through hole or surface mount components. FBE-32 is only through hole.



(https://s17.postimg.org/yi6zdkj0f/FBE_All.jpg)

(https://s17.postimg.org/4q9wyf6hr/FBE_Front.jpg)
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: Mulmany on December 10, 2017, 10:23:55 PM
Any idea where the cost is going to fall?

They look great! Are production units going to have printed faces as well?
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on December 11, 2017, 03:44:08 AM
Any idea where the cost is going to fall?

They look great! Are production units going to have printed faces as well?

Mulmany, the cost is going to be around 250€ per kit. but i have the doubt of wether sell a complete kit or a partial kit with a mouser cart for components.
I believe that the printed front panels are a good compromise between costs and appearance, and the printing should be very durable, i think i'd stick with it

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on December 11, 2017, 07:04:52 AM
I really like what you've done here with the modular design – having different IO and filter options makes for a very flexible and attractive package.

Will you be offering PCB-only sets for those who prefer to roll their own panels (or to build a pair into a 1U with stepped stereo switches  ;))? If so I would definitely be interested in a few sets of the Harrison 32!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on December 11, 2017, 08:26:28 AM
I really like what you've done here with the modular design – having different IO and filter options makes for a very flexible and attractive package.

Thank you!

Will you be offering PCB-only sets for those who prefer to roll their own panels (or to build a pair into a 1U with stepped stereo switches  ;))? If so I would definitely be interested in a few sets of the Harrison 32!

No problem with PCB only sets, just be aware that in order to have a balanced input output you'll also need the IN-OUT pcb that comes with the 500 series set or else find another solution for that.
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on December 11, 2017, 08:43:01 AM
No problem with PCB only sets, just be aware that in order to have a balanced input output you'll also need the IN-OUT pcb that comes with the 500 series set or else find another solution for that.

Excellent, thank you for the quick response. When these are ready I'm definitely interested in a couple of sets of filter PCBs + IO PCBs, possibly with a couple of partial kits as well. Great stuff!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on January 10, 2018, 10:11:08 AM
Just to register my continued interest.  ;)
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: mrdarwin on January 13, 2018, 02:45:43 AM
Me too...
 :)
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on January 13, 2018, 08:07:30 AM
Sorry for my absence but i've just moved to another place and i'm trying to put everything together again, the project is alive.

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on January 13, 2018, 01:22:42 PM
No worries! Thanks for the update. Hope the move went well.

Sorry for my absence but i've just moved to another place and i'm trying to put everything together again, the project is alive.

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on February 06, 2018, 07:31:51 AM
Hi to all,

i'm in the final stage of gathering everything for the first batch of kits that will be like this:

8x  FBE-32
8x  FBE-02
8x  FBE-242

these will be PARTIAL kits with: pcbs, knobs, all potentiometers, front panel, cabling and the IN/OUT pcbs for 500 series compatibility.
I've prepared three different  Mouser carts with everything else needed to complete each build.

For IN/OUT pcb I will prepare four carts with the different options: one for that 1646 output, one for 1246 input . one for studer input and one for api output. You will choose which one you want to utilize.

Price will be 220 € per kit plus shipping.
mouser cart should be around 40 € for eqs, still to be determined for IN/OUT options.

Paolo


Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on February 06, 2018, 08:10:35 AM
Hi Paolo,

Great! I’ll send you a PM about purchasing PCB sets (filters + IO) as above.

Thanks!
Andy
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: mr. harrison on February 10, 2018, 02:43:29 AM
i´m definatly interested in 2 32 kits and 2 242 kits!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on February 12, 2018, 04:36:58 AM
i´m definatly interested in 2 32 kits and 2 242 kits!

Noted!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: mrdarwin on February 13, 2018, 04:00:27 AM
Hey!
2 x FBE 02 here
Thx
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on February 13, 2018, 04:28:06 AM
Hey!
2 x FBE 02 here
Thx

Noted!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: mr. harrison on February 13, 2018, 06:00:35 AM
let me know what i have to do now. i emailed u too and sent u a PM here ;)
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on March 01, 2018, 03:06:48 AM
mouser carts in the first page of the thread

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on March 19, 2018, 01:25:56 PM
Boards received! Many thanks.

Andy
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on March 19, 2018, 02:33:57 PM
Great!!!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: mrdarwin on March 30, 2018, 02:43:17 AM
Hi!
Received my boards too, fast and easy building... need two more!!!
a couple of things:

-in/out pcb:
c53,54,55,56: 100nF
c51,52: 470p
c50: 47p
D4, D5: 1n4007

-calibration 500r trimmer: http://sslweb.solidstatelogic.com.s3.amazonaws.com/content/x-rack/pdfs/docs/XLogic_X-Rack_E_Series_EQ_Module.pdf
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on March 31, 2018, 09:06:11 AM
Hi!
Received my boards too, fast and easy building... need two more!!!
a couple of things:

-in/out pcb:
c53,54,55,56: 100nF
c51,52: 470p
c50: 47p
D4, D5: 1n4007

-calibration 500r trimmer: http://sslweb.solidstatelogic.com.s3.amazonaws.com/content/x-rack/pdfs/docs/XLogic_X-Rack_E_Series_EQ_Module.pdf


Bravo!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: fragletrollet on April 06, 2018, 05:32:21 AM
2x 32 Kits for me please, gotta get them before their'e gone
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on April 06, 2018, 05:48:28 AM
2x 32 Kits for me please, gotta get them before their'e gone

sure, PM me for details
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on April 06, 2018, 08:41:45 AM
By the way, are you planning carts for the discrete I/O stages? And will you be sharing schematics?

I'm really looking forward to building these up! They're a little way down the build queue, but expectations are high.  ;D
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: Dosser on April 06, 2018, 11:08:13 AM
Forgive my ignorance, but can anyone explain the the difference between the 1246 and the 1646 I/O? 
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on April 06, 2018, 04:36:38 PM
Forgive my ignorance, but can anyone explain the the difference between the 1246 and the 1646 I/O?

About 400. (Sorry, couldn’t help myself!)

More helpfully, 1246 and 1646 are ICs from THAT Corporation - 1246 is a balanced line receiver (input), 1646 is a balanced line driver (output). Very clean sound, technically great stuff. I’ll be going transformer in/out here, but have used the THATs before and have a lot of time for them.
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on April 07, 2018, 06:16:29 AM
By the way, are you planning carts for the discrete I/O stages? And will you be sharing schematics?

I'm really looking forward to building these up! They're a little way down the build queue, but expectations are high.  ;D

the carts for input output discrete are ready but i'm gonna order them and try i build before publish them
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: TwentyTrees on April 07, 2018, 08:34:08 AM
the carts for input output discrete are ready but i'm gonna order them and try i build before publish them

Ah, makes sense - thanks. Let us know how the tests go!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: Dosser on April 07, 2018, 10:51:27 PM
I am interested in 2 of the 242 kits.
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on April 25, 2018, 11:18:27 AM
A link to FBE-02 Building Manual has been added in the first post.

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on May 03, 2018, 05:19:28 AM
A link to IN/OUT pcb guide in  the first page.

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: Dosser on May 04, 2018, 08:50:29 PM
I received my boards in the mail today.  Excited about a new build!
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on May 05, 2018, 01:35:31 AM
I received my boards in the mail today.  Excited about a new build!

Great!
You can use the guide for FBE-02 as a reference since the two eq are similar.
let me know if you have any question about the build.
thank you again.

Paolo
Title: Re: FFBE-32-02-242 (Famous Four Band Eq)
Post by: pahstah on May 08, 2018, 09:36:49 AM
A link to FBE-32 Building Manual has been added in the first post.

Paolo