abner
New Member
Posts: 21
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Post by abner on Jun 1, 2017 14:11:11 GMT -7
Hi there
I've been using JJ's in all positions and I've been wondering if this marvelous amp can be even better with another brand of power tubes.
Suggestions are welcome... thanks in advance!
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Post by "Z" Steve on Jun 3, 2017 14:58:41 GMT -7
The JJ's are the safest 6V6 tubes to run in the Remedy, BUT, the Doc said that Tungsol 5881 Reissues will stop right in and allow more headroom (if that's something you are after).
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Post by wubberdubber on Jun 4, 2017 8:53:43 GMT -7
Not only do I think they're the best for my Remedy (JJ's), but also use them in my Deluxe Reverb...with that and the 2-10" baffle conversion, it sounds like a mini Vibrolux.
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abner
New Member
Posts: 21
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Post by abner on Aug 13, 2017 10:06:16 GMT -7
Anyone else would like to share their experiences?
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Post by purpletele on Aug 13, 2017 10:14:39 GMT -7
New JJ's going into the Remedy today
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Post by dendog55 on Aug 14, 2017 6:24:59 GMT -7
JJ's all around. Been using them for years. Consistent, readily available, and reasonably priced. However I recently put a Tung Sol in V1, because I had it lying around, and to be honest I can't tell you if it made an appreciable difference.
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Post by John on Aug 14, 2017 13:59:58 GMT -7
The one's that came with the amp! ha ha
But seriously folks....I think they're jj's
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abner
New Member
Posts: 21
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Post by abner on Sept 5, 2017 9:59:41 GMT -7
Does anyone think vintage tubes would be an improvement?
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Post by chuckdizz on May 29, 2020 18:27:24 GMT -7
I have a Remedy non master volume and I've been reading on other forums that some guys are using 6v6s other than JJ's. I contacted Tube Amp Doctor in Germany and they recommend the 6V6GTB-STR. I expressed my concerns with the plate voltage and Doc's recommendation but they assured me that these tubes would work well. So I got them a few days later and plopped them in. These tubes sound GREAT in the Remedy and give it a whole different character. The tone was extremely clear and 3D (couldn't think of any other way to describe them). Very musical with a lot of chime. Much different from the JJ 6v6 and the Tung Sol 5881. After playing for a few minutes a loud hum developed and just got louder as the amp warmed up more. Soon the amp started making all kinds of crazy noises and got real distorted. I shut the power off for a few, made sure that the tubes had a good tight fit and then tried again. Same results. I ended up pulling them and putting my Tung Sol 5881s back in. I contacted TAD and they said that I probably just got a bad tube and emphatically claimed that this tube is more than ok for the Remedy. So now I want to find out if this tube is ok and I just had bad luck with a bad tube or if there was a malfunction because of the high voltage? See TAD specs below. Any thoughts from anyone? I would love to use this tube.
TAD 6V6GTB-STR
Characteristics Electrical Heater: Min. Nom. Max. Voltage (AC or DC, parallel connection) 5.7 6.3 6.7 V Current ca. 0.45 A Cathode-to-heater potential, max. 100 V Direct interelectrode capacitances, max.*** Grid no.1 to cathode and grid no.3, grid no.2, base sleeve and heater <12 pF Plate to cathode and grid no.3, grid no.2, base sleeve and heater <7.5 pF Grid no.1 to plate <0.7 pF Mechanical Operating Position Any Base JEDEC #8ET, octal, 8-pin Dimensions: Height 85 mm (3-11/32 in.) Seated height 72 mm (2-27/32 in.) Diameter 33 mm (1-5/16 in.) Cooling Convection Approximate net weight 38 g (1.34 oz.) ***Without external shielding, nominal values AF Power Amplifier Maximum ratings DC plate voltage 430 V Grid no.2 DC (screen) voltage 420 V Grid no.1 (control) voltage - 100 V DC cathode current 60 mA Plate dissipation 12 W Grid no.2 DC (screen) dissipation 2 W Typical Operation AF Power Amplifier, Class A1 (single tube) Plate Voltage 250 V Grid 2 Screen Voltage 250 V Grid 1 Control Voltage* -12.5 V Zero Signal Plate Current 45 mA Zero Signal Grid 2 Screen Current (avg) 4.5 mA Transconductance (nominal) 4,300 mS Load Resistance 5k ohms Output Power at 8% distortion 4.5 W
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Post by Chilly Gibbons (Todd T.) on May 29, 2020 18:40:34 GMT -7
Well, Doc knows his circuits and what works and what doesn’t. TAD just buys tubes from the major manufacturers, tests and groups them, then sells them under the TAD name. So, they could be JJ, Reflektor (Russian) or Chinese.
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Post by KeithA on May 29, 2020 21:08:05 GMT -7
Well, Doc knows his circuits and what works and what doesn’t. TAD just buys tubes from the major manufacturers, tests and groups them, then sells them under the TAD name. So, they could be JJ, Reflektor (Russian) or Chinese. Yeah, that's what I thought, too. Not sure if its a proprietary tube made by someone else or TAD did it themselves. However it seems to be a 'new' tube. Here's the blurb from their site. Product information "6V6GT-STR TAD PREMIUM Matched" TAD 6V6GT-STR (aka. 7408 / 6V6GTY) PREMIUM tube Finally in production after 3 years of intensive research. This all new TAD 6V6GT-STR combines the exceptionally sweet characteristics of the NOS 6V6GT by RCA or of the GE 6V6GTY. It is a heavy duty 6V6GT tube, which can handle a higher plate current. This TAD 6V6GT-STR caters for a detailed and powerful tone and an abundance of sustain; characteristics you would only expect from the finest NOS 6V6GTs from the 50s and 60s. Even when pushed into saturation there are no harsh upper mids, which is frequently the case with other 6V6s. Sweet full-bodied tone with silky highs. We recommend the TAD 6V6GT-STR for all 6V6 applications where a powerful but sweet tone is desired; It works great in amps like the Fender -Tweed- Champs, Deluxe Reverb Amps, Vibro-Champ, Fender Champion 600 or the Univalve. This is also the perfect choice as a reverb driver for the Vibrokings and Dual Professionals.
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Post by chuckdizz on May 29, 2020 21:41:27 GMT -7
I hope its determined that this tube is ok to use. It really sounds nice! I was pretty bummed out when the amp started crapping out. Doc, if your out there can you give your 2 cents?
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Post by DRZ on May 30, 2020 1:04:55 GMT -7
I hope its determined that this tube is ok to use. It really sounds nice! I was pretty bummed out when the amp started crapping out. Doc, if your out there can you give your 2 cents? Your experience is the same one I had with TAD 6V6GTB-STR tubes in the Remedy. The amp was designed to run the JJ 6V6. Those are the only currant 6V6 tubes that I recommend using in the Remedy. I can't be any clearer than that.
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Post by sharkboy on May 30, 2020 9:43:24 GMT -7
It is my understandIng that TAD does a bit more than purchase and test in some cases. In those instances, they hand their suppliers specs for the tubes that may exceed all manufacturers’ specs. Because of this, some of their tubes are unique. I like the sound of their 6V6s in other amps, but I don’t know about torture thresholds in a Z.
JJ 6V6s are not constructed like 6V6s. They are more like a 6L6, and they sound more like a JJ 6L6 to me. In other amps, I’m not a huge fan, but these amps seem optimized for their use.
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Post by Chilly Gibbons (Todd T.) on May 30, 2020 11:30:24 GMT -7
Agreed. But they have three places/factories to choose from: Reflektor, JJ, and our favorite (kidding of course) China. None of these factories are reinvesting significantly in their tooling capability (ask Doc) and as such are producing what they are producing, regardless of the recipe supplied by TAD or other.
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jacop
New Member
Posts: 4
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Post by jacop on Jun 4, 2020 4:02:19 GMT -7
Hi guys,
I'd like to retube my Remedy (MV model). Searching for straight forward, simple solution.
- So, JJ 6V6 - should they be "matched quartet"? - 6V6S is probably the same as 6V6?
Then I need 3x 12AX7.. - 1 should be Balanced? In which slot should I put this one (if it needs to be balanced)?
- For the other 2 I guess balancing is not important?
Thanks!
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Post by Andy 67 on Jun 4, 2020 7:11:00 GMT -7
The PI ( the closest one to the power tubes) should be a long plate one and balanced. Experiment with the rest and , yes, the power quartet should be a balanced one. Enjoy your tonal beast. Tons of tone!!
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jacop
New Member
Posts: 4
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Post by jacop on Jun 4, 2020 22:43:12 GMT -7
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Post by daddyelmis (Greg) on Jun 5, 2020 4:30:35 GMT -7
Just FYI - here’s what doc recommends for the remedy (http://drzamps.com/support/tube-info/). I’ve always ended up with Doc’s recommendation so the amp sounds as he designed it.
Remedy V1: JJ ECC83S, V2: JJ ECC83S, V3: Tung Sol 12AX7, V4-7: JJ 6V6 (matched quad)
Recommended Bias Point: Cathode Biased (no re-biasing necessary)
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