Quote from: phatt on December 10, 2016, 02:55:41 AM
Now you know that with no shielding you will have problems.
Better go find a steel box 8|

Phil

I don't have a budget for a good box yet but I hope something like this is enough  xP

The one in the bottom of the picture, used in making sliding windows and doors, etc

Is this natural? or can I do something to remove it? Squeal starts at about 90% rotation I think
I used 5k, 3 x 20k, 1M all linear as of now. I added a switch to choose between 100pF or 220pF for C5.
Here's the layout I made but there were some slight changes in the actual build

Here's the build And I'm hoping being unshielded's not the reason for the squeal.



Maybe the layout's the main problem?
Anyway, those red colored pads indicate tracks cut. It was some kind of stripboard something but tracks are customized by the store I bought it from

i haven't tried the thicker strings yet, can't find a store with it near my location
But I'll order online as soon as I have the $$ 

Anyway, I removed the R14 and the clippers in the P27 and replaced the R13 (4k7) with a 100 ohms one, I left the Master Volume and emitter follower circuit in there and I did not change the connection of the output. Is it okay or should I connect the output jack directly after R13 which would make the Master Volume useless?

Thanks to all your answers. I had a friend bring his Epiphone LP, plugged it in my Lead 12 Pre assembled in a lunchbox  :lmao:, then to the LM3886 Power Amp, to my Eminence RWB,
and WOW, so different than my Tele to P27 Pre Setup. I won't say that I prefer this new setup, since I still like the clean tone of the P27, but for darker ones, I will go with the LP to Lead 12.

Quote from: phatt on November 21, 2016, 06:22:50 AM
Hope it helps,, Phil.

oh it helps a lot! 
Well then, the RAT will be next on my list.
Right now, I just finished the Lead 12 Preamp, Rebote 2.5 delay and TS 808, all on vero and all without a case. They're still on my bench waiting for their enclosures. I tested them all and they work except that I don't think I like the sound of the TS, it doesn't sound like a TS at all when I tested it in front of my P27 Pre. I'll try removing the clippers in the P27 and test the TS again in front.

Also, I'm planning to build the Multicab Simulator to be able to play direct to mixer/PA speakers or PC. Good idea or not?
We'll be having a big church event in an open field and we don't have any stacks that can handle that requirement. We do have an MG250dfx and it has done it before but it will be used for one guitar only, so we need to connect the other guitar to PA system, and upon reading, I realized we need a cab sim to reproduce guitar tones.

Edit: Not actually open field but an open plaza (think of two open basketball court size), surrounded by some small establishments and a park. Also, the MG250dfx did cut it but at almost max levels, we tried connecting it to PA but we know how harsh the sound of those early MG series are, after hearing the distortion in the PA system, the sound guy removed it immediately.

May I add another question. If I remove those clipping diodes and the other related components, will it make the preamp's volume at max higher? I just thought that since it clips the signal, so the resulting volume is a bit lower.

okay, thanks Juan 

i just realized I'm asking for varied sounds using a Tele and an RWB, and many times I've read that versatility can only be achieved by using multifx rather than single amp, is this necessarily true?

I've been using eminence red white & blues, which i know is not really for that kind of sound i am looking for. I was just wondering if something can be done to enable my setup to get darker 
i can't change my guitar and speaker, but maybe the electronics will get me there? some eq maybe?

Additional Info: I use a Telecaster copy so setup's really bright. I just have to ask if it can be achieved  :loco

I've been using my P27 preamp with a silicon fuzz face clone in front and is not quite satisfied with the results. I love the cleans of the P27 alone, although not amazed by the sound produced by those clipping diodes. I might just remove those in the future.
However, I also want some darker sounds for other kinds of music. What preamp can I build to achieve this?
My speaker only adds to the brightness of the P27 and adding that FF clone resulted in harsh and unpleasant sound IMO. I need some dark distorted sounds from some gears, be it a complete preamp, a distortion pedal, that will balance the brightness of my speaker.

PS: I was considering the Lead 12 Pre as it already earned some praise from people more experienced than me but I don't know if it's what I need. Is it?

Quote from: J M Fahey on November 11, 2016, 09:30:30 AM

First time I see something like this. I might try this one as I'm having hard time finding enclosure for my heatsink 100mm tall.

no problem
great job BTW

ahh ok tnx 
can I have schematic for the whole circuit? I'd like to try it
also, instead of using a dummy load when headphone is used, can i just disconnect the speaker and remove that attenuator circuit?

oh, I missed that one  :cheesy:

Is it another active stage or the two pre (guitar and aux) just linked to a single path (wire) there?