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Projects => Build Reports => Topic started by: Marshall Arts on February 05, 2016, 02:43:09 AM

Title: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 05, 2016, 02:43:09 AM
This is slowly coming together. I had bad luck with the enclosure twice - it broke where I drilled the last hole (last picture, bottom left) and it had a "belly", so the toner for the lion did not stick to the enclosure (I realized before etching and covered that area with tape). Anyway, first time I did a (partly) reverse etch. This one will be treated hard, so I use it as it is.

The PCB is my take on a tillman booster, ROG Condor Cab Sim, a ROG ruby amp, a MXR MicroAmp, and a mixer all in one. I will use it to practice with headphones, blend in backing tracks, slave-power other effects, blend two cell phones for small parties, record with cab sim, drive a 1x12" cabinet (actually gets quite loud!) etc. It will work with a battery as well. The footswitch can shut off one channel (e.g. if I blend in a metronome and want to mute it temporarily).

If you dig it, I still have sample PCBs and a build documentation available...
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Ettore_M on February 05, 2016, 03:27:42 AM
Nice build mate!  :)
I wanna build something similar for a friend of mine, but I'm going to use another Cab Sim circuit,  maybe the Marshall one. How does your combo sound?

Hector
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 05, 2016, 03:48:49 AM
The cab sim uses the values from the marshall circuit (Details: http://www.runoffgroove.com/condor.html (http://www.runoffgroove.com/condor.html)).

It sounds well with headphones, I added an additional Hi-cut for less noise/hiss (cuts off high enough to not influence the guitar signal too much but prevent ear fatigue). Switching the Cab-Sim on and off produces a clicking noise (only once, so I can live with that). It can be loud on a cab, at very high settings (beyond living room level) it gets noisy / oscillates. It is perfect for the use cases I intended it for.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Lubdar on February 05, 2016, 04:15:19 AM
Thats really cool!
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: 287m on February 05, 2016, 10:03:59 AM
always nice build mfunky

the lion make me remember simba lion king, maybe the first cartoon movie i watch in theatre with my own money when i kids, under 10 :D
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: SlaveUnit on February 05, 2016, 11:06:33 AM
Very cool and very handy tool!
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: jtaormina on February 05, 2016, 07:43:41 PM
Dude you can totally fix that with some JB Weld I'm sure of it. That stuff is strong as hell.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 05, 2016, 09:58:50 PM
Quote from: jtaormina on February 05, 2016, 07:43:41 PM
Dude you can totally fix that with some JB Weld I'm sure of it. That stuff is strong as hell.

Never heard of that - cool, I will try that, thanks!
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 07, 2016, 04:27:21 AM
Build instruction attached
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 07, 2016, 09:39:51 AM
my vacation setup: Zendrive into HOF reverb into Leo Cab Sim Amp into Headphone. Blended with a great youtube backing track (Robben Ford "Help the Poor"). I used to use positive grid, but this is way better (especially with youtube backing tracks, which was never possible with positive grid).

:) :) :)
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Muadzin on February 08, 2016, 04:01:59 AM
I'm so glad this project is back on. I was worried it had disappeared in the Great Forum Crash.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: copachino on February 08, 2016, 06:57:41 AM
do you still have some pcbs??
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: matmosphere on February 08, 2016, 07:09:49 AM
What is the guitar? Couldn't quiet place it. Tele with hummbucker bridge, single coil neck and deluxe pickgaurd?
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 08, 2016, 11:49:58 AM
Quote from: copachino on February 08, 2016, 06:57:41 AM
do you still have some pcbs??

yes - please send me a personal message for details.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 08, 2016, 11:58:18 AM
Quote from: Matmosphere on February 08, 2016, 07:09:49 AM
What is the guitar? Couldn't quiet place it. Tele with hummbucker bridge, single coil neck and deluxe pickgaurd?

The guitar is a partscaster: Sunburst Strat body with humbucker tele bridge, the creamery wide range humbucker, tonerider tele neck single coil, 5-way switch with Jerry-Donahue half-out-of-phase wiring, tele one piece maple neck.
It went through various iterations, with the current wiring (http://www.tdpri.com/forum/tele-technical/509479-fat-telecaster-wiring.html#post5988315 (http://www.tdpri.com/forum/tele-technical/509479-fat-telecaster-wiring.html#post5988315)) it is perfect for me.

The HOF looks a bit too much standard in this picture, I agree ;-)

Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: matmosphere on February 08, 2016, 01:12:47 PM
That looks like is versatile as hell. I love wide range pickups. I have a set of Novak wide range in my jazzmaster. Soundsfantastic, and he's a super nice guy. I'll have to look into the creamery ones, they look very nice, wonder if they have any dealers in the states.

I'm going to build a danelectro soon, and add much as I want to stick with lipstick pickups I might have to put at least one wide range in. They just sounds so damn good.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 08, 2016, 01:53:41 PM
It is, indeed. The pickguard is custom-made. With the 5-way switch, I have widerange HB (1), Split widerange (2), half-out-of-phase (strat-like, 3), Neck/Bridge parallel (4), Neck (5). All I could ask for. I think that the creamery makes custom-orders only, the one I have (obviously) is a humbucker-sized widerange and sounds just lovely.

Here it is in full beauty.
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on February 12, 2016, 04:35:28 AM
Quote from: Matmosphere on February 08, 2016, 01:12:47 PM
That looks like is versatile as hell. I love wide range pickups. I have a set of Novak wide range in my jazzmaster. Soundsfantastic, and he's a super nice guy. I'll have to look into the creamery ones, they look very nice, wonder if they have any dealers in the states.

I'm going to build a danelectro soon, and add much as I want to stick with lipstick pickups I might have to put at least one wide range in. They just sounds so damn good.

BTW: a fantastic article bout widerange pickups: http://offsetguitars.com/forums/viewtopic.php?t=12610
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on March 18, 2016, 05:08:18 AM
I just updated the documentation in the original post - the offboard wiring was missing!

http://www.madbeanpedals.com/forum/index.php?topic=21629.msg213755#msg213755
Title: Re: Cab-Sim/Headphone-Amp/Blender
Post by: Marshall Arts on March 25, 2016, 12:05:39 AM
Hi,

this thing works perfect, only thing that bugs me is a brief but loud "squealing" sound when switching it on or off - most likely a cap charging/discharging. I dont want to add a relay before the output and I guess there is a standard solution to this issue - any suggestions?