Check my topic about Mesa Recto sound :
http://www.ssguitar.com/index.php?topic=991.msg6142#msg6142

Here more new clips.I modified the preamp to be more aggressive, lots of gain, thick low end, please tell me your comments:
Memara Beest 100 Clip 1.mp3
Memara Beest 100 Clip 2.mp3
Memara Beest 100 Clip 3.mp3

Hi guys, i need help!!!
I designed the preamp based on the interface manual specs:

OUTPUT BALANCED XLR:
Output impedance: 50 ohm
S/N: >105 @ line level, >70 @ mic level (S measured at 1%, 1 Khz, A Weighted)
Response: 20-20Khz , -3dB @11Khz, -5dB @ 20Khz
THD+N: <0.005 (< -90dB) @ -10dB below max sensitivity level
Sensitivity: 1.1Vrms @ line level, 2.5 Vrms @ mic Level
Gain: 11dB @ line level, -28dB @ mic level. ±1.5dB.



Is preamp OK, is it balanced output?
Voltage supply range is from 9-24V.

It's 24 volts,LM317 regulated supply.

Thanx,
Power amp is TDA7294(100W Mosfet), mine design,
Cab is 2x10''(SAL speakers), again mine design(oversized cab, to create much more bass),
Guitar is Squier Strat loaded with Di'Marzio,
It was close micked with regular PC mic.

New samples:
Mesa New.mp3
Mesa Solo.mp3

With humbackers it is good for dirty blues, but with single coils it's a beauty...

http://www.fileden.com/files/2008/12/25/2237836/Mesa%20FET.mp3
http://www.fileden.com/files/2008/12/25/2237836/MesaFET%20Slipknot.mp3
http://www.fileden.com/files/2008/12/25/2237836/Metal%20Madness.mp3

Please comment

Can guys on the forum help me with creating of this super hi-gain preamp*(pedal)?I have the schematic of the 6505+, and i wanted to share it with you.I have drawn the LEAD channel, and i need some help. How to bias FET's on this circuit (what are the values of the trim pots)?Must I change values of the source(cathode) resistors?Are the resonance and presence controls ok, since i bypassed phase inverter?I will draw the PCB right away when you guys give me some answers.I will appreciate any help.
Here is the original schematic of the 6505+:
http://img505.imageshack.us/my.php?image=6505schemvc0.jpg
Here is my schematic:
http://img262.imageshack.us/my.php?image=6505vu0.jpg

Here is the schematic for the GV-2:
http://rapidshare.com/files/108444030/Marshall_GV2_Schematic.pdf.html

Here is the MG100 schematic:
http://img368.imageshack.us/my.php?image=marshallln2.jpg

Note: W1 and W2 are the speaker outputs.

I hope that somebody will help me with GV-2 Layout

C'mon guys,no one wants to help buiding this project?

Here are they!!!!

Hey guys, i have PCB pictures of GV2,lets make it!!!! :tu:
I will post pictures tomorow!!!

I found that too guys few days ago, but we will see.Can we make Jackhammer PCB?Lets ask someone who has it, to picture th PCB(from both sides).And than make the MG PA.

It has more gain, and added deep boost(4x12cab sim).