Will it work on a Route66? (Maybe you could just list all the amps it'll work on since eventually someone is going to ask.) Thanks.
OK I have used 5U4GB's in RT 66's and I really liked the bloom and almost tweed like characteristic it gave the amp. Lowered power and headroom but increased sustain.
Now time for a little rectifier primer by DR.Z.
A 5U4 is the toughest rectifier on the amps Power Transformer. The filaments of a 5U4 are 5 Volts AC @ 3 AMP. Most designers cheapen out on this section of the PT and use a lower rating for say a 5AR4 and save copper ( i.e. CASH ) .
ALL the PT I designed and use in my amps have 3 AMP Rectifier Filament taps from the 5001 in the Ghia to 9001 in the Delta 88.
So a 5U4 can be safely used in any Z-Amp. Just remember it will lower plate voltage so on FIXED biased Z-Amps Bias will need to be re-adjusted.
The 5U4GB sounds best in a 6L6/KT 66 amp IMHO, not so good in a EL-34/EL-84 based amp, but YMMV.
Hint the new EVAN DR.Z 6L6 amp has a 5U4GB in it right now and do like what I'm hearing, this may change in the final release or not.
I like 5V4's as they are in between the dynamic and higher powered 5AR4 and the spongy 5U4.
I would use them more but they are hard to find these day's and no one makes a GOOD replacement.
I like 5V4's in EL-84/EL34 amps especially for smooth BLUES tones.
OK 5Y3's they supply the least amount of Voltage and Currant. A 5AR4 SHOULD supply 250 mA a 5Y3 supplies 125mA. The draw of 4 EL-84's is typically 120 mA at idle so NO room is left for any other tubes in the amp.
In a 2 EL-84 or two 6V6 amp a 5Y3 is fine just be careful ,too much sag and too much heat. A 5Y3 tube heats up a lot as it's internal voltage drop and dissipates that drop as HEAT.
As you can see all my amps are tube rectified, even the plug in SS amps Delta 88, KT 45 and 6545 are wired for and can except a tube rectifier as a plug in. I find that changing the rectifier type can make the biggest difference in an amps tone for the smallest amount of money. Just remember all changes in TONE are not for the best in all applications.
Post by billyguitar on Jan 1, 2007 12:44:09 GMT -7
How about Free Form Guitar. A friend of mine in high school said the band teacher said that sounded like a truck grinding gears going up a long grade. Pretty funny! Doc: What's the concept of the amp? I know you'll do something original. You've mentioned a tweed Super before. Still along that line or more brown or blackface? Fixed bias? 35 watts or so?
Sorry Doc... But you mean Terry Kath, right? His early Chicago and CTA stuff had murderous tone, and he used a Bogen on the CTA album, at least...
The solo on "25 or 6 to 4" still makes the hair on my neck stand up.
Your right TJ my bad. Too much New Years Cheer I guess Terry Katz was an old Insurance man of mine, Terry Kath is the CTA guitarist with kick arse tone.
Kath was also always my favorite Chicago vocalist, although they too often left him to throw in soulful wordless yowls and let Cetera and Lamm sing most of the leads. But for the first couple years of my playing, thanks to Kath and McLaughlin, my leads were pretty much devoid of the old rock licks and cliches... and full of really bad up and down scales played as fast as I could play them...
GuitarZ: Best Pandemic Comment - Delivery guy shows up. As we're social distancing, I look at myself in brown loafers, black socks, gym shorts, t-shirt and say "I realize this is not my best look". His response "You can wear whatever you want to the apocalypse."
May 1, 2020 14:39:30 GMT -7
roscoenyc: read a newspaper.
May 19, 2020 17:20:32 GMT -7
roscoenyc: You know in school when they talked about "your permanent record"? Well, this is it! Learn to spell! Don't be stupid!
May 21, 2020 8:19:01 GMT -7
premiumplus (Dave): Due or do? Which or witch? Knob or nob? Their or there? Bass or base? Too much time on my hands...
May 24, 2020 6:31:30 GMT -7
roscoenyc: Ah, the incessant tire kickers. oh jeez.
May 25, 2020 6:57:46 GMT -7
GuitarZ: Needed some noise to fill a break in a tune I'm recording. It was too quiet. Just happened to have some High Quality Dr Z Ghia noise to fill the void. "Heal Your Sound with Dr Z! It's not just a guitar tone prescription!"
Jun 13, 2020 8:29:27 GMT -7
GuitarZ: Must be great to be a skunk. Eating bird food about 10' from our sun room. I'm clapping and yelling. At best, it might have given me one "yea what?" look while continuing to dine. At one point, there were two skunks and two racoons.
Jun 14, 2020 18:49:33 GMT -7
captainron (Ron): Hueter Toledo, just another business of today that doesn't care about tomorrow!
Jun 25, 2020 12:51:43 GMT -7
KeithA: Hueter Toledo....that business is gone to the dogs
Jun 26, 2020 8:22:26 GMT -7
easyed: Guitar Z, I encountered to ultimate garbage raiding combo once. We'd been having problems with the garbage cans being raided by raccoons for weeks. Late in the evening I heard rattling at the cans. I went out and found that he'd allied with a skunk. "OK"
Jun 30, 2020 11:40:27 GMT -7
GuitarZ: EasyEd - Someone at work topped us both. The inside of their car had been somewhat ransacked. They were blaming their son. They checked the video. It was a Bear! I'll stick with the racoons, skunks, foxes, and squirrels.
Jul 1, 2020 16:47:50 GMT -7
bigboki: In this age and time when everybody are struggling and especially S&Ms I am amazed to see that kind of ignorance. I am really sorry for your experience dear Dr Z but it is for the better. You don't want to do business with those kind of people anyway.
Jul 4, 2020 8:17:40 GMT -7