Has anyone tried a NOS 5V4GA in a Maz 8 yet? I know it will work just fine, but I'm curious how you liked it before I order one.
My JJ GZ34 is rattling like crazy and driving me nuts! Not an issue for gigs, but it'd be nice to avoid it. I'm usually fine with new production tubes, but I've had a lot of rattling rectifier tubes lately.
Yup, I tried one in my Maz 8. In pentode mode I couldn't tell any difference between a NOS 5V4GA and a NOS 5AR4. In triode mode, I like the NOS 5AR4 a little better. The difference was subtle, but the amp seemed to lose something with the 5V4GA. I keep the 5V4 as a backup.
(dergit)Markus did a good video comparison in this thread in the Tubes topic :
Post by premiumplus (Dave) on Nov 3, 2017 9:32:47 GMT -7
I had a 5v4 in my Maz 18NR for a month or two, and it fell apart (the glass separated from the base) I glued it which didn't hold, and finally gave up and went back to the 5AR4. I'm glad I did, because the amp just sounds overall better with it. The 5V4 tended to make it lose it's immediacy and the low end got loose. Bottom line is Doc knows which tube sounds best, and he ships his new amps with them. I just can't advise any changes. I've even tried NOS tubes and they really don't sound better, at least to my ears. Doc really knows his craft and it is humbling to admit that after working on amps for my whole life (I'm a 65 year old retired electrical engineer) that I can't make his amps better. Z amps are the ONLY ones that I can honestly say this about. I'm pretty good at voicing amps but Doc stands WAY ABOVE me. He's great. I'm good. End of story!!!
"Tone, tone, tone, tone. Is there a substitute?" -Dr.Z
Same here. I've been working on amps for 40 years or so. All my other amps are tweaked in some way. I've never had a desire to do anything to my Z's other than install some NOS tubes and change speakers and I usually wind up with one of the original options. I haven't even looked inside except for briefly a MAZ 38, which was my first Z. I was more than satisfied that the workmanship was first rate and I couldn't do anything to improve it. Time is better spent fussing about other gear.
Post by Chilly Gibbons (Todd T.) on Nov 3, 2017 13:51:33 GMT -7
Me three, I’ve given up trying to improve Zs, inside or outside of the chassis. I use the Z website page under Support-Tube Info or just look at the tubes the amps ship with and get exact replacements. Doc makes it easy.
Z-Lux Combo in Black, Z-Lux Head/1x12 Z Cab in Red, Cure, Maz 8 Head/1x12 Z Cab In Black, another Maz 8 head/1x12 cab in blond, blond Z-Verb, Red Z-Verb, Maz 18 NR MKII in Black, Therapy blonde, Red Monza, Air Brake, and few more now, but who is counting? Past: Monza 1x10 in Red, Mini Head in Red, Maz 18 Head in Black (Baby come back...)
Thinking about this one some more... since this is a single ended, true class A amp, you're not going to have any sag or change in current, so there really shouldn't be a difference in "feel" between the two rectifier tubes in this amp.
The 5V4GA impedance is a little lower than the 5AR4 (100ohm vs ~180ohm), so the B+ will be a bit higher, which could account for a small change in sound.
I may give it a shot and see. It's really not about sounding better than it is about reliability and lack of rattle. It's pretty easy to find a good quality NOS 5V4GA compared to the big $$$ people pay for a NOS GZ34.
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
GuitarZ: Didn't want to restart the plumbing thread, so I figured I'd ShoutBox this. How the heck does cleaning the aerator on a faucet cause a leak to start under the faucet? Huh? Arggggh!!!!
Jul 10, 2020 7:40:17 GMT -7
The Bad Poodle Experience: well, Mike, it shouldn't have been the cause of a leak. double-check your work.
Jul 10, 2020 12:56:49 GMT -7
GuitarZ: I updated in the Plumbing thread that the Moen website says that a faulty aerator can cause a handle/base leak. Eiyy! I really don't understand how plumbing works. I was ready to double check all connections. But, the leaking stopped with cleaned Aerator.
Jul 11, 2020 18:13:56 GMT -7
jhen86 (jordan): Just got an email from Sweetwater rep that Z Wreck Jr's are back in stock. Just wanted to give everyone a heads up.
Jul 28, 2020 10:57:28 GMT -7
Lefty: Say a prayer for me fellas, I'm going to replace a bathroom faucet this weekend.
Jul 30, 2020 8:26:34 GMT -7
GuitarZ: Make sure you use your plumbers tape.
Jul 30, 2020 12:21:50 GMT -7
doctorice: Just replaced a kitchen faucet. Hardest part was getting the old one out -- had a weird flange on it. Good luck, Matt!
Jul 31, 2020 8:02:26 GMT -7
steiner: Just payed the plumer to replace a faucet and drains. Finally have non-leaking, speedy draining sinks!!!
Aug 4, 2020 8:08:03 GMT -7
GuitarZ: After finally training myself after 4 days to not bother trying to turn on the guest bathroom light because of the power outage, I just found myself bracing for the sound of the generator as I opened the garage door and it's now quiet. Power Back!
Aug 7, 2020 16:51:10 GMT -7