Guess the amp I'm building by the transformer labels.
Tomato paste for scale.
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| SO U WANT TO PRAY GAME :mexican: http://maplifiers.net/forum/viewtopic.php?f=2&t=3060 |
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| Author: | teh_bleeding [ Wed Jan 28, 2015 8:14 pm ] |
| Post subject: | SO U WANT TO PRAY GAME :mexican: |
Guess the amp I'm building by the transformer labels. Tomato paste for scale.
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| Author: | Devtron [ Wed Jan 28, 2015 10:00 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
One intended to blow up the planet based on the size of the damn things. |
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| Author: | chris_d [ Wed Jan 28, 2015 10:19 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
Will it have a quad of KT88s? I am currently rusty on the ampstuff. They are too expensive for me to be able to build enough of them to keep myself busy. So i just build piles and piles of pedals i will never use.  EDIT: Oh, wait, that is tomato PASTE, so like a 6oz can? Impedance and wattage should be good for a couple EL34s, no? |
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| Author: | Snaxocaster [ Wed Jan 28, 2015 11:28 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
Hiwatt DR103? |
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| Author: | chris_d [ Wed Jan 28, 2015 11:54 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
Imma guess some sort of Orange NMV. |
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| Author: | teh_bleeding [ Wed Jan 28, 2015 11:57 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
Hint #1 They are built to 1960's specification. This picture might be a giveaway. 
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| Author: | Snaxocaster [ Thu Jan 29, 2015 1:04 am ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
I have no idea what in the picture could possibly be a giveaway except for the packing peanuts, so I am going to say Matamp Green? |
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| Author: | teh_bleeding [ Thu Jan 29, 2015 1:28 am ] | |||||||||
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: | |||||||||
DINGDINGDINGDINGDING i was hoping to drop more hints though like... came from the one of the orignal transformer suppliers for matamp, and uses a quad of el34s... etc etc. Ps, sick deal on those transformers. 390$ Canadian shipped from the factory in Huddersfield, and 60$ in customs fees. So 450 flat abouts. Compared to some knockoffs made by mercury for 600 USD BEFORE shipping, conversion, and customs? Yeah. But yeah, Matamp GT120, or the green as everybody knows it. I have this dude's kit: http://hilbishdesign.bigcartel.com/ with some original iron. Its going to be secks. |
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| Author: | chris_d [ Thu Jan 29, 2015 9:01 am ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
Fuggin sweeeeet.  In troof, i dunno shit about Matamps, so i would never have guessed it.
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| Author: | Snaxocaster [ Thu Jan 29, 2015 12:05 pm ] |
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: |
I only guessed it because the peanuts were green and it's an old design with green in the name. 
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| Author: | teh_bleeding [ Thu Jan 29, 2015 12:25 pm ] | |||||||||
| Post subject: | Re: SO U WANT TO PRAY GAME :mexican: | |||||||||
The Matamp GT120 is VERY similar to an Orange GRO100 (pre '73, graphics only, FAC knob after 1st gain stage, as opposed to after 2nd gain stage found in the OR120's) Primary differences: 1. Capacitors on FAC knob are different values, and not in series, however they add up to about the same capacitance value +10% - i did the math in an excel sheet  2. Matamp has a 4 way rotary "drive" switch which essentially bleeds current from the input stage AND disconnects/reconnects the bright cap in 4 combinations (bleed + bright; bleed + no bright; no bleed + bright; no bleed + no bright). 3. Coupling caps are 0.047 uf instead of orange's 0.068 4. phase inverter is dc coupled with an inductor, orange's were AC coupled with less inductance from 71-72, and no inductance 73 onward. I will probably be modding mine with a switch to try both AC and DC. Because why not. |
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