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Lightning
Well-known member
Mike Soldano said multiple times the circuit is the same
Rackman
Well-known member
Sameish. The loop is not the same. With the loop bypassed, fat bypassed, and the deep switch off if on the rack unit, I could see them being exactly the same.
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Lightning
Well-known member
The other amps companies list above that use heyboer each of those amp companies tells heyboer the design the have to make the heyboer transformers the way they want that heyboer transformer
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Lightning
Well-known member
Right the effects loop was updated for the better also updated that Mike Soldano wanted to do longtime ago was DC heaters
PBGas
Well-known member
I have no issues with my newer version of the 100 Rack. It's the first amp in many years that I love playing through and have no intentions of selling it or changing to something else.
I have a friends pre-Bad SLO here that I just repaired and it sounds great as well. I enjoy playing through it.
I'll take mine any day of the week because of the master volume and ability to switch channels from the front panel as well as the depth switch mod.
In any case, a SLO is a SLO....you either love it or hate it.
I have a friends pre-Bad SLO here that I just repaired and it sounds great as well. I enjoy playing through it.
I'll take mine any day of the week because of the master volume and ability to switch channels from the front panel as well as the depth switch mod.
In any case, a SLO is a SLO....you either love it or hate it.
RedPlated
Well-known member
There are very small changes here and there but for the most part, the same.
For example, they use a 220k plate resistor on the second OD stage instead of 100k like the OG. Why, I don’t know. Maybe they wanted it greasier with more gain. Or lower voltages for tube life. Not sure.
The treble cap is 500pf instead of 470pf. Small things like that.
Then you have Omron 12vdc relays instead of LDR’s. That will make a small difference.
The loop is also different, as already mentioned.
LPMojoGL
Well-known member
Dunno about the 30. I did compare the 100 to the 30 before I bought the 100.
I've since played the 30 at a healthy volume in the amp rooms. Honestly, great amp. Id probably be as happy with it as I am with the 100, if I hadn't compared them.
thegame
Well-known member
I didn’t realize @Techdeth branched out and is giving English lessons too
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Deleted member 8175
Guest
I wonder if it's Dave Friedman's loop. IIRC, he helped with a couple of things on the B.A.D. Soldano amps.
RedPlated
Well-known member
It’s not the loop Dave uses in all his amps, which is an LND150 type.
The SLO still has a tube buffered loop. I think Mike is too much of a purist to allow transistors in the signal path. Although I’ve thought about putting an LND150 loop in one.
The BAD SLO loop isn’t transparent. It’s gainier and brighter engaged, in my experience.
LPMojoGL
Well-known member
The SLO effects loop is tube driven, if I'm not mistaken. It's very good, but I think it might be different than what is in Friedman. Edit: Jeremy beat me to it, confirming my thoughts.
It does have an effect on the sound. But not in a BAD way, imo.
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Deleted member 8175
Guest
Good to know. Thanks!
LPMojoGL
Well-known member
Like Jeremy mentioned, it's brighter and gainier. Actually seems to take out some of the mid honkiness that is inherent in the SLO.
I actually prefer it with the loop engaged.
Whatever they did with the BAD version, took it from an amp I flipped twice to one I can't see parting with.
FourT6and2
Well-known member
I have an amp with an LND150 loop. I really like it and I don't hear a bit of difference with it in/out of circuit. Very transparent.
RedPlated
Well-known member
Agreed. I love LND150 loops. They're all I use.
glpg80
Well-known member
The problem I have with the LND150 is that the datasheet doesn’t provide realistic thermally compensated bias curves. As they heat up they become nonlinear and compress the gate signal hard due to drain saturation which causes a significant loss in power handling and dynamics. The tone won’t change significantly, but the dynamics of what are behind the tone absolutely will. Typically when you get compression it also favors 2nd order harmonics so people find it musically pleasing and not necessarily a bad thing tonally speaking. The other problem with the LND150 is that it the device is just slow as hell for solidstate but comparable to tubes for the majority of frequencies we care about in guitar amplifiers. Hifi groups might start complaining though.
The biggest killer of tube loops today aren’t solidstate designs, but rather microphonic tubes as quality continues to decline. LND150’s have their place for space saving and general ease of maintenance. LND150’s just don’t like being pushed hard, biased hot, thermally stressed, and the datasheets don’t show the true picture of what’s happening safely in statistically accurate thermally compensated IV curves as they admit in the footnotes.
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Techdeth
RESIDENT ROCK PROFESSOR
Lightning copying my style lol
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harddriver
Well-known member
Dave L
Well-known member
When I use it with the lead channel of my X99 (and V30s) I think I have the depth on about nine o´clock. Just tremendous low end. But this is running it very loud into a Suhr Reactive load, however, so you could probably do with more depth at lower volumes just like on the SLOs with the depth mod.
