Hi
Populated the board yesterday, and got it boxed up today, so officially completed on the 1st January 2015
Its the Dirtbaby- I was lucky that someone gave up their PCB for me to try having missed the limited run
I think my PT chip isnt the cleanest; I have about 20 from Tayda that all suck a bit / motorboard on long(er) delay times.
I will try and get a legit clean sounding PT before I do any side by sides, but suffice to say it does cop the vibe of a real Memory Man
The modulation is particularly nice, and the Rate control is a welcome addition.
The only mods I made were to have a 100kb delay control, with a 220k resistor in parallel (for about 70k) allowing for longer delay times.
Oh, actually, I also used polarised caps for the 2.2uF; hopefully I got them the right way round - I just compared to the DEM schematic and went from there. The one connected to the depth control is definitely right anyway ;)
I chose to wire it for true bypass.
For the graphics I just tried to ape the real deal again. Also, this time I went for a landscape orientation with top mounted jacks. Previously with the Dirtbags I had built them portrait; thanks for the inspiration from some other Dbag builds for that.
Here are the money shots:
(http://i1178.photobucket.com/albums/x374/LaceSensor1/IMG_1064_zps9507e1c2.jpg)
(http://i1178.photobucket.com/albums/x374/LaceSensor1/IMG_1070_zpse38c91ca.jpg)
(http://i1178.photobucket.com/albums/x374/LaceSensor1/IMG_1072_zps02f3f2d7.jpg)
now with video
Insanenly tidy and beautiful
Snap! Great build, tidy looks all around, the works! Goodness in a box! 8)
The layout just looks perfect. Lovely build.
Looks nice! I'm anxious to hear some sound clips of this one.
Wow this looks great. Looks like it fit perfectly in the 1590BB. Can't wait to get my hands on one.
Cody
Excellent! Can't wait for this ine
Sent from my iPhone using Tapatalk
Been slowing down on the pedal front... but damn I need to build this one!
Great work on all fronts. Really impressive.
Wow, impressive build, also very much looking forward to hearing this.
cheers
I might do a shorter delay time comparison
longer delay times my PT2399 doesnt sound so hot.
the filtering in general on this feels pretty minimal though ie there is a fair bit of noise, but again this might be exacerbated by dodgy pt chip...
Looks fantastic! Would love to hear a demo!
Nice one!
Very interested to hear that circuit too, Brian is totally owning the PT2399. 8)
.....very nice.
Very nice looking!!
Good to see my PCB at a new and happy home.
8) 8)
Off to a great (and quick) start to 2015.
now with video
http://youtu.be/vUt5TuDjhpU
The Dirtbag uses 2 x MN3005 (many peoples holy grail chips)
The EHX uses 4 x MN3008 (with the analog man input gain mod performed by me)
The Dirtbaby uses a PT2399 digital echo
The Dirtbaby aliases and has a bit more background noise, but this may be due to the PT chip itself. For my money though, it cops the vibe of the real one, particularly at the more modest delay settings shown, whereas longer delays the noise factor isnt as musical as a real BBD delay.
For the record I always felt my dirtbag was quite dark, and I use a 330pF clock capacitor rather than the stock 240pF so that might have some influence on it...
yeah that dirtbag is really dark.
as for the dirtbaby - sounds very cool, definitely even better than the dirtbag in this clip. the DMM reissue is head and heels above em though, there's really a huge difference with how the sound splashes up and down when you're doing that percussive rhythm, which makes all the difference in a live band mix imho.
I am super impressed with the dirtbaby. It really surpassed my expectations. The modulation sounded great and pretty spot on with the Smith riff.
Thanks for the video.. now I wait patiently for my board to get here. lol
Cody
Nice one!
I've never had the pleasure of playing a real DMM, it sounded great in that clip though. There is absolutely no doubt in my mind I'll be getting a dirtbaby. I built an echobase a while back and while it can cop some of these sounds, I don't care. I want all the delays in the world. Be careful posting this to TGP, you might start a riot. ;D
Thanks for the demo, I as well as others were very interested in a comparison. Sounds Great!
Max
Cheers for watching lads.
I will post at TGP for a laugh haha
Thanks for the demo, Ian! And the comparisons.
I will get my own demo happening by next week. Since I boffed my enclosure so badly with the Envirotex I need to start over.
Quote from: madbean on January 04, 2015, 12:25:27 AM
Thanks for the demo, Ian! And the comparisons.
I will get my own demo happening by next week. Since I boffed my enclosure so badly with the Envirotex I need to start over.
No worries
When I get another PT in I will make a better demo :)
be interested to hear other demos in the interim to further understand the noise floor with this circuit.
What was the reason to remove the compander circuitry?
And will the wider release feature a PCB rev to include the LED mod, and remove the other stuff (jumpers, omissions) ?
I did not see a reason to include the compander. Rather, I have yet to run across a PT2399 that has been improved significantly by including one. I know the PT-80 has one but I actually have not built that one personally. It just seemed like overkill in this circuit.
As far as noise, my proto had quite a bit until I added that LED. It seemed to be the magic mod for making this circuit sound good.
All the minor errors have been corrected and the LED mod has been added to the newly released boards.
Quote from: madbean on January 04, 2015, 02:01:02 AM
I did not see a reason to include the compander. Rather, I have yet to run across a PT2399 that has been improved significantly by including one. I know the PT-80 has one but I actually have not built that one personally. It just seemed like overkill in this circuit.
As far as noise, my proto had quite a bit until I added that LED. It seemed to be the magic mod for making this circuit sound good.
All the minor errors have been corrected and the LED mod has been added to the newly released boards.
Cool. Im gonna get the new one too
Man! That demo sounds pretty, pretty, pretty good! ;) Order placed!
This sounds great!
Nice build and video! I can't wait to fire mine :)
got a new PT2399 in today and tested it, definitely helps with the noise floor
guess its a case of auditioning a few, or paying over the odds for someone to have pre-selected one for you ;)
BTW: are you using TL062 for all the other ICs? I can't tell from the pic. I found that it helped a little bit, too.
Quote from: madbean on January 06, 2015, 12:51:50 PM
BTW: are you using TL062 for all the other ICs? I can't tell from the pic. I found that it helped a little bit, too.
Yes I am using the Texas Instruments TL062CP in all other positions.