madbeanpedals::forum

Projects => Build Reports => Topic started by: gordo on January 01, 2022, 04:23:39 PM

Title: First build of 2022 - Archibald
Post by: gordo on January 01, 2022, 04:23:39 PM
I love this pedal.  Definitely more "ooomph" at 12v but not a deal breaker.  I am getting some significant gating on the attack with the buffer in circuit.  I'm not sure if it's a pedal issue or a build issue but haven't troubleshot beyond verifying correct parts in the buffer circuit.  I'll try swapping tubes at some point but for now I'm having a blast playing it and looking forward to running it in my live rig tomorrow.

Nothing special here except I actually threw down the gauntlet and painted the inside of the enclosure.

(https://www.gordomusic.com/Madbean/TO01.jpg)

(https://www.gordomusic.com/Madbean/TO02.jpg)
Title: Re: First build of 2022 - Archibald
Post by: madbean on January 01, 2022, 04:26:54 PM
How are your voltages on the JFET compare to the ones listed in the doc? Don't know what would cause a gated effect here.
Title: Re: First build of 2022 - Archibald
Post by: Thewintersoldier on January 01, 2022, 04:33:46 PM
Quote from: gordo on January 01, 2022, 04:23:39 PM
I love this pedal.  Definitely more "ooomph" at 12v but not a deal breaker.  I am getting some significant gating on the attack with the buffer in circuit.  I'm not sure if it's a pedal issue or a build issue but haven't troubleshot beyond verifying correct parts in the buffer circuit.  I'll try swapping tubes at some point but for now I'm having a blast playing it and looking forward to running it in my live rig tomorrow.

Nothing special here except I actually threw down the gauntlet and painted the inside of the enclosure.

(https://www.gordomusic.com/Madbean/TO01.jpg)

(https://www.gordomusic.com/Madbean/TO02.jpg)
Looks great Gordo, no surprise you beat me to the punch on this one. I'm posting mine today too 😂
I also had the issue with the buffer at 12 volts but ended up changing the jfet. Haven't had anymore issues since. But I also like the slightly less headroom and compression that 9 volts gives, as subtle as it is
Title: Re: First build of 2022 - Archibald
Post by: jjjimi84 on January 01, 2022, 05:01:49 PM
Looks great! Couple of savages posting New Years Day builds!!!!
Title: Re: First build of 2022 - Archibald
Post by: madbean on January 01, 2022, 05:19:12 PM
I used a surface mount mmbfj201 on my build. I did not experience any issue with the buffered output (across two builds). But, of course I will check again. My final boxing for it should be tomorrow. Just finishing up the artwork for my build today.
Title: Re: First build of 2022 - Archibald
Post by: gordo on January 01, 2022, 05:23:50 PM
Yupp, that was it.  I must have baked the 201 smd when I soldered it.  I buggered up the pad getting it back off the board so I replaced it with a thru hole and I'm in business.  Voltages on the 201 were way off and now look normal.

I agree with Thewintersoldier, the buffer is really nice and I'm closing it back up with the buffer in circuit.
Title: Re: First build of 2022 - Archibald
Post by: Haberdasher on January 01, 2022, 06:09:11 PM
Pretty cool!
Title: Re: First build of 2022 - Archibald
Post by: jimilee on January 01, 2022, 08:36:50 PM
I'm digging it.


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Title: Re: First build of 2022 - Archibald
Post by: baloubass on January 01, 2022, 11:27:29 PM
Hello everyone and happy new year, does anyone knows the difference between this circuit and the Blue driver. I have read it's pretty close but i don't know where is the differences.
Thank for your answer.
Title: Re: First build of 2022 - Archibald
Post by: Bio77 on January 02, 2022, 04:57:00 PM
Looking good, Gordo! Great start to the new year  8)
Title: Re: First build of 2022 - Archibald
Post by: matmosphere on January 02, 2022, 05:25:45 PM
You and the wintersoldier man, you guys are making me feel like I need to build one of these.

Great looking build!
Title: Re: First build of 2022 - Archibald
Post by: gordo on January 02, 2022, 07:04:01 PM
It's worth a look.  I brought my live board home after trying it this morning.  I'm going to work it into the board.
Title: Re: First build of 2022 - Archibald
Post by: bbd on January 15, 2022, 11:15:32 PM
Which box did you use?  Looks a bit deeper than the Tayda 1590BB2 120 x 94 x 38mm

120 x 94 x 42.4mm (4.73 x 3.7 x 1.62) is the love my switches 125bb / 1590bbs.

And pedal parts model  125BB enclosure 4.7" x 3.7" x 1.4
Title: Re: First build of 2022 - Archibald
Post by: gordo on January 16, 2022, 01:10:09 AM
I'll double check but it was a LMS order so I believe that's the box.  It's pretty much a deep 1590BB.
Title: Re: First build of 2022 - Archibald
Post by: jimilee on July 05, 2022, 11:29:09 PM
Quote from: gordo on January 16, 2022, 01:10:09 AM
I'll double check but it was a LMS order so I believe that's the box.  It's pretty much a deep 1590BB.
He Gordo, got a question for ya. When I have the toggle switch to the right, the hi pot makes the output quiet as I turn it up. I really have to crank the volume and the amp. Is this your experience?