Original 1960s JTM45 vs. a 1990s re-issue JTM45

[JMP/HBE]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

You'll pay out the nose for an original.

[Lake Placid Blues]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

I'm using ZoSo's for replacing old caps on the board too.

[LLL]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

Get these power tubes if you're going the KT-66 route:



https://www.amazon.com/Valve-Art-KT6.../dp/B003HEC0QS

They're supposed to be the closest new-manufacture KT-66 to the holy grail NOS GEC (Genelex) KT-66s.

Also note these amps (the originals) have a ton of negative feedback (off the 16ohm tap IIRC); thereby making them pretty clean.

If you wanted more dirt you could move the negative feedback wire to 8 or 4ohm tap... but remember too much and it may get flubby in a hurry... that preamp
820ohm + 330/250uF combo on Channel 1 is really phat to begin with.

[SirJackdeFuzz]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

You'll pay out the nose for an original.

. . . oh that much i know

[SirJackdeFuzz]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

I'm using ZoSo's for replacing old caps on the board too.

Thanks - good to know mate

[SirJackdeFuzz]

Re: Original 1960s JTM45 vs. a 1990s re-issue JTM45

Get these power tubes if you're going the KT-66 route:

[ATTACH=CONFIG]99867[/ATTACH]

https://www.amazon.com/Valve-Art-KT6.../dp/B003HEC0QS

They're supposed to be the closest new-manufacture KT-66 to the holy grail NOS GEC (Genelex) KT-66s.

Also note these amps (the originals) have a ton of negative feedback (off the 16ohm tap IIRC); thereby making them pretty clean.

If you wanted more dirt you could move the negative feedback wire to 8 or 4ohm tap... but remember too much and it may get flubby in a hurry... that preamp
820ohm + 330/250uF combo on Channel 1 is really phat to begin with.

Again, great info.
Always appreciated LLL.

Any more into is always welcome.