[dukeamps]

Hi Guys, here is a clip of my jtm45 i have modded, guitar lespaul, speakers scumback 4x12 m75 65w 


http://soundclick.com/share.cfm?id=11095103


Cheers


Nigel

[carlitz]

Schöner Ton.

Stell doch mal Dein Modding vor, damit wir sehen was den Ton erzeugt.

[dukeamps]

Thanks for your feedback

Here is how it was done.

It's sort of a mix between a 2204 & jtm45,
input 33k
stage 1, 2k7.68uf 2n2 coupler
stage 2, 10k 22n coupler
stage 3, 820r22uf
tone stack 500p33k
all filtering 32uf apart from v1&2 22uf
combo before the gain pot 470k500p, 5n bright cap
change the 470k470k500p divider to 470k470k100p
pi output couplers .1uf
NFB 27k 8ohm 5k pot .1uf
Normal MV,

Tubes gold lion kt66, v1 siemens, v2&3 rft

no boosting or anything like that, just the guitar amp & speakers, recorded it with a sm58 beta pointed directly at the middle of the speaker & at a 45% angle, then added a bit of reverb & delay in cubase, no eq, panned it left & right, there ya go

cheers

Nigel

[cca88]

Thanks for your feedback

Here is how it was done.

It's sort of a mix between a 2204 & jtm45,
input 33k
stage 1, 2k7.68uf 2n2 coupler
stage 2, 10k 22n coupler
stage 3, 820r22uf
tone stack 500p33k
all filtering 32uf apart from v1&2 22uf
combo before the gain pot 470k500p, 5n bright cap
change the 470k470k500p divider to 470k470k100p
pi output couplers .1uf
NFB 27k 8ohm 5k pot .1uf
Normal MV,

Tubes gold lion kt66, v1 siemens, v2&3 rft

no boosting or anything like that, just the guitar amp & speakers, recorded it with a sm58 beta pointed directly at the middle of the speaker & at a 45% angle, then added a bit of reverb & delay in cubase, no eq, panned it left & right, there ya go

cheers

Nigel

Hi Nigel,

Zimmerlautstärke mt MV oder Endstufenverzerrung?


Klingt toll

Grüße

Jochen

[Duesentrieb]

Sounds very good. Like "a good" 45er. Thanks for sharing.

[dukeamps]

Cheers Guys

Amp setting's where, gain 4, mv 3, t 6, m 4, b 6, p 6,

So it wasn't very loud.

I forgot to say the Tranny's are from Marstran.

Nigel 

[Manfred]

Hi Nigel,

the Amp Sounds great!
Excellent guitar playing!

From which JTM45 Schematic does moddes circuit come from?

Cheers Manfred

[dukeamps]

Hi Nigel,

the Amp Sounds great!
Excellent guitar playing!

From which JTM45 Schematic does moddes circuit come from?

Cheers Manfred

Thanks Manfred for your great feedback There is no schem, its a mod which i have done myself, its a mix between a 2204 & a jtm45, i wanted to try & keep the tone of a JTM45 but with a bit more gain.

Here is a new clip with a few more tweaks, the amp is really cranked here,  http://soundclick.com/share.cfm?id=11115641

Cheers

Nigel

[Manfred]

Hi Nigel,

got the preamp the LOW- and HIGH-input or only a single input?

Cheers

Manfred

[dukeamps]

Hi Nigel,

got the preamp the LOW- and HIGH-input or only a single input?

Cheers

Manfred

I have just a 33k input resistor.

Nigel

[Manfred]

Hi Nigel,

I drew in  your shared values in a 2204 preamp schematic.
Is this circuit the right one?

Cheers Nigel

[dukeamps]

Hi Nigel,

I drew in  your shared values in a 2204 preamp schematic.
Is this circuit the right one?

Cheers Nigel

Hi Manfred, great job thanks that was the spec for the first clip, if you are interested in the cranked clip tone, then i changed the first stage to 2k7.47u, bright cap to 1n, & the NFB to 100k4ohm .1u, also i only have one 22uf filter cap, if you look at the ceriatone jtm45 layout you will see a 16uf cap on the board, i have changed that to 22uf.

Nigel 

[Manfred]

Hi Nigel,

thanks for the further modification hint.

Cheers

Manfred

[dukeamps]

Hi Nigel,

thanks for the further modification hint.

Cheers

Manfred

No probs

Nigel

[sonic-surfer]

Hi Nigel,

well done !