2nd attemp, Please check for me
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2nd attemp, Please check for me
2nd attempt at a layout, could someone please check it then let me know what i,ve messed up lol
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Re: 2nd attemp, Please check for me
The circuitry around gain 1 seems a bit strange. Without seeing the schematic, I can't say exactly what it is, but it seems a bit off.
The tone stack now looks right from an electrical standpoint. You could flip it over to shorten the wires more.
The tone stack now looks right from an electrical standpoint. You could flip it over to shorten the wires more.
Re: 2nd attemp, Please check for me
I think your looking at the hi gain input, there is a n/o switch built into the jack which closes when the jack is inserted, heres the original schematicJana wrote:The circuitry around gain 1 seems a bit strange. Without seeing the schematic, I can't say exactly what it is, but it seems a bit off.
The tone stack now looks right from an electrical standpoint. You could flip it over to shorten the wires more.
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Re: 2nd attemp, Please check for me
You have your gain pot and this input jack connected to one triode screen. The other input jack is connected to the other triode plate...younhave a 50n cap hanging off connected to nothing, etc. the first input jack mentioned also has some sort of switched 50n cap in line. definitely some stuff going on there that i dont understand either.
Re: 2nd attemp, Please check for me
thats called hurrying because the wife was yelling for me, the 50n in line can be deleted and the cable taken straight to the 50n on the board, as i understand the original scheme the area in question is a switchable gain stage operated by a isolated switch in the input jack housingsurfsup wrote:You have your gain pot and this input jack connected to one triode screen. The other input jack is connected to the other triode plate...younhave a 50n cap hanging off connected to nothing, etc. the first input jack mentioned also has some sort of switched 50n cap in line. definitely some stuff going on there that i dont understand either.
Re: 2nd attemp, Please check for me
Okay, I see what you are doing. Mesa has the gain 1 wired differently. You have the .05 uf cap on the board but nothing hooked up to it. Instead you have one over by the input jack. Delete the one by the input jack and use the one on the board--keep the hi voltage on the board.
You are missing the 1M resistor on the input jack.
Make sure when you do the actual layout for drilling that you check for clearances for parts. A few of them look like they might be cramped for space--like the .05uf cap on the top.
Other than that, it looks like you have it.
You are missing the 1M resistor on the input jack.
Make sure when you do the actual layout for drilling that you check for clearances for parts. A few of them look like they might be cramped for space--like the .05uf cap on the top.
Other than that, it looks like you have it.
Re: 2nd attemp, Please check for me
cheers Jana, its not as hard as it looks to do but you definatly need peace and quite, just got to decide which power output stage to use, possibly RJ,s rockster output stage?Jana wrote:Okay, I see what you are doing. Mesa has the gain 1 wired differently. You have the .05 uf cap on the board but nothing hooked up to it. Instead you have one over by the input jack. Delete the one by the input jack and use the one on the board--keep the hi voltage on the board.
You are missing the 1M resistor on the input jack.
Make sure when you do the actual layout for drilling that you check for clearances for parts. A few of them look like they might be cramped for space--like the .05uf cap on the top.
Other than that, it looks like you have it.
Re: 2nd attemp, Please check for me
I would also recommend that before you do any drilling, you have all the parts on hand that you are going to use. Lay them on your layout and make sure that everything will fit (hole spacing for turrets, spacing between parts, etc.).
Also, this is a high gain amp with 4 gain stages. It is going to take some clean wiring and attention to lead dress. I would recommend shielded wires for the grid wires. RG174 works well. Use it for the runs from the input jack and from the two gain pots that go to the grids.
Also, this is a high gain amp with 4 gain stages. It is going to take some clean wiring and attention to lead dress. I would recommend shielded wires for the grid wires. RG174 works well. Use it for the runs from the input jack and from the two gain pots that go to the grids.
Re: 2nd attemp, Please check for me
Same stuff thats used in dumble clones if i remeber correctly, i,ve got piles of the stuff kicking around from various buildsJana wrote:I would also recommend that before you do any drilling, you have all the parts on hand that you are going to use. Lay them on your layout and make sure that everything will fit (hole spacing for turrets, spacing between parts, etc.).
Also, this is a high gain amp with 4 gain stages. It is going to take some clean wiring and attention to lead dress. I would recommend shielded wires for the grid wires. RG174 works well. Use it for the runs from the input jack and from the two gain pots that go to the grids.