Modifying Marshall GV-2 for bass

[Hawkwind]

Hi guys. Got any mods for the new Marhsall Guvnor? The GV-2.

I heard that you could remowe c22 for clarity and i will try that but what do you think i could do more to make it better sounding for bass?

Best regards Kristoffer

[petemoore]

Hi guys. Got any mods for the new Marhsall Guvnor?
  Of course I do !
  The GV-2.
  I heard that you could remowe c22 for clarityand i will try that
    but what do you think i could do more to make it better sounding for bass?
1 I'm not sure I do.
2 I have no idea what better means.
3 Without a need, goal or outline of what isn't enough, or what is too much, and a schematic, and info about construction [SMT ?] all the suggestions are vague, perhaps try turning the bass guitar volume down a bit, or put an EQ in front or behind the pedal to see what's what when knobs are 'so etc. in an effort to find the relevant frequencies and related content [such as example: the bass gets ill defined, or too loose, or is missing.
  ITOH, building a parametric and a dirtbox of choice [choose by soundclips, testing.
  I'd start with a BMP, some EQ [whether HP/LP filters, EQ...would depend on many things...how much noise can I stand etc.], a bypass line with compressor for clean mix...that's just me.
  Here's what I'd do without a clear idea of what anyone wants: twist the knobs, decide if I liked the pedal, use it, play bass, try another pedal...or twist the knobs some more, definitely play more music until things seem clearer about what and why before indulging in mod syndrome.

[Hawkwind]

I meant to let more bass frequencies through. I know you could maybee the change the input caps and maybee the output caps but im not sure.

Heres the schematic

http://rapidshare.com/files/108444030/Marshall_GV2_Schematic.pdf.html

[petemoore]

  2 links hit, no picture tho.
  Any capacitor through which the signal passes can be a HP filter.
  If it is SMT, make the input / output capacitor a larger value would be impossible [to me], many new pedals are SMT.

[Hawkwind]

Its a PDF file that you ahve to download.

Do you mean surfacemounted by SMT?

[petemoore]

Do you mean surfacemounted by SMT?
  Yes. My soldering equipment is way too large, and the way these things are put together follows a design designed to make much smaller components populated on a board and soldered very quickly [and with little requirement for humans] by machines, making them extremely difficult for reworking, even by humans.

[petemoore]

  For 'racecar' bass, or at least one that 'handles' better...
  Starting with a platform that doesn't 'corner' optimally may not be the quickest way around the track.
  Choosing a platform for the track [with great preponderance] affords the ability to set the vehicle up 'for the track'.
  The Guv2 already has 'extra controls ? This makes it more likely that the topology of the circuit is where the _____ isn't.
  Split:
A  BMP or other distorter from one of the splitter outputs.
B  The other side is treated or not treated, so that when mixed the signal can be heard. Adding boost may be needed.
  For 'A', a revoice ['fuzzy' LF's sound ill-defined], change in power supply voltage, change in diode configuration, possibly even omitting or replacing one of the stages..
  For 'B', perhaps a variable-switched] LP filter>compression>Tone will bring defined/boosted but controlled [ie the peaks don't hit the speaker so bad] low frequency content type of side-chain.
  ..or anything else !
  Once you've opened up the topology for inspection/detection/theory-i-zation...you can take your favorite distorter and do pretty much anything you want with it.
  Bass is ''demanding'' by it's very nature. By the time the 'story' gets past the amp, speaker, cabinet, room etc. it may have content missing, added, a portion may have been fundamentally altered.
  Getting a clipped sound to act right [be represented in high pressure air waves] is a bit like throwing a wrench in the gears and expecting the machine to not miss a cog...the larger the cog [more distance/lower frequency between cogs] the beefier everything [gear weight, amps, bearings, speakers] has to be.
  Sorry for the cryptic/mixed analogies.
  ie...try something else, leave the Guv2 for doing what it does best [either you like it or no, I think it's a nice ~relatively flexible platform to begin and end with as it sits].
  I mean for all the troubles and risks involved in Guv2-mod type endeavors, you could instead get a side-chain or something else, and this would really open up the possiblities where there were limitations.
 
 

[Hawkwind]

Thanks for all the info but i opened it up and there are smaller caps and resistors but they are hole mounted so theres no problem in replacing them so if anyone have any suggestion on caps to change or remowe i will be happy.

[rvargas]

Hi Hawkwind,

Do you still have the schematic around? The RS link got dead.. I coudl take alook but need the schematic.

Thanks!