"N"AD - Engater Tweaker 15

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Srini

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OK..here comes a two-parter:

Good morning all,



I jumped on a Tweaker 15 on Reverb for $225, assuming it was a great deal, which it seems to have turned out to be. I was anxiously waiting to find out if it was in actual working condition or had any issues. But, aside from the packing being a little less than exemplary, the amp has turned out to be perfectly usable - and it doesn't look like it's been mistreated at ll. The back panel is missing, but,hey it saves me 2 full minutes during tube changes..:)



This where the story gets mildly interesting. FYI, I'm running it using 4CM with an HX Stomp, with the amp's output going to a Suhr reactive load and back to the HX. Speakers tones are all IRs.



OK...so I checked the tubes, and found Sovtek preamp tubes. Assuming these had to be junk tubes, I put in a JAN Philips 12AX7 in V1, left V2 alone since I won't use the FX loop, and used a Mullard CV4024 (NOS when I got it a few years back, now ANOS, but I'm the guy who used it, so...). The surprise to me was the power tubes, which turned out to be Genalec 6V6s - these things are more expensive than a pair of matched RCA grey plates! Anyway, I did get the RCAs and put them in. They sounded fine, but there was significant hum in the Hot setting, and the the gain was just way too gainy even in milder setting
 

Srini

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Part 2:

So, I swapped out V1 with a JAN GE 5751, and that definitely took the edge off the fizziness in the Hot setting, but the hum was still there. So, just as an experiment, I put the Genalecs back in and..lo and behold, the hum was almost gone and the tone was just plain better - in every way. This is not the first time I've been less than thrilled with RCAs, but to be fair, the new production Genalecs cost more than the RCAs.



They say that Dumble rarely used NOS tubes, so I'm wondering if this all much ado about nothing. I may try the JJ 6V6 S tubes next, but I like the Gens so far, so I'll wait until they die. Bottom line, I really like this little amp, and it seems to works extremely well with the Suhr reactive load and the 4(3)CM system I'm using.



So, that's my story, and I'm sticking to it!



Srini
 

Srini

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Guys, quick update - I did one more swap and tried a 12AY in V1. For now, I'm liking this the most, because it has become a mostly clean amp now, with the Hot setting having turned into a crunch setting, more or less. Of course, different strokes, but I'll give the amp credit for being able to cover all this ground.

Srini
 

Peegoo

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@Srini

NOS tubes are often a smoke screen. The absolute best thing they reliably do is separate the buyer from their money.

The reason why your earlier posts would hang your browser is probably because you added smileys; emoticons often cause this site's server to go into French Fry Pertater mode.

Qc6gV7Fm_o.gif
 

Ljislink24

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OK..here comes a two-parter:

Good morning all,



This where the story gets mildly interesting. FYI, I'm running it using 4CM with an HX Stomp, with the amp's output going to a Suhr reactive load and back to the HX. Speakers tones are all IRs.
Congrats on the amp ! They kinda have my attention because of the low used prices. Here's where I get confused & maybe I'm missing your point on your post. I guess this NAD post was about tubes not how the amp actually sounds ? If your running a 4cm the HX to a reactive load & back & using IR's at that point does it actually matter what amp is amplifying the processed guitar signal ? I'm not trying to be controversial I'm just not familiar with using IR's & clicked on the post because of the Egnater 15 title.
 

Jakedog

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Played a Tweaker 15 head for years. Great little amp. Sovteks aren’t “junk” tubes. They’re generally very robust and reliable. I’ve used them tons. Mesa, GT, and several others test, match, and relabel them. They’re solid IME.

One of the coolest things about the Tweaker is that it will accept any octal power tube pair without rebiasing or any modding. I found I liked mine best with EL34 bottles. But I’m much more of a Brit amp guy than F style. I have a friend who runs his on a pair of KT66 bottles and it’s a beast!

Congrats on a cool amp. Have fun with it!
 
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Srini

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Congrats on the amp ! They kinda have my attention because of the low used prices. Here's where I get confused & maybe I'm missing your point on your post. I guess this NAD post was about tubes not how the amp actually sounds ? If your running a 4cm the HX to a reactive load & back & using IR's at that point does it actually matter what amp is amplifying the processed guitar signal ? I'm not trying to be controversial I'm just not familiar with using IR's & clicked on the post because of the Egnater 15 title.
Not at all! In fact, the post was about the amp, and how I was pleasantly surprised by it. Sorry about confusing people with tubes, but my point was that lowering the gain in V1 (as well as V3) improved the tone significantly - to my ears. Also the point about 4CM and IRs was just to emphasize that there is no physical speaker to affect the tone, just the IRs - which, in my opinion, can be very realistic, but what you're hearing is what you would hear in the control room of a studio and not the guitar cabinet. About 4CM, it absolutely matters what amp you use, because the idea of 4CM is that you don't necessarily put all the effects in front of the amp. In my case, I have an overdrive pedal (model of a Zendrive) in front of the amp that I have disabled, because I rarely need that level of OD. My other two effects - delay and reverb - happen after the IR, so think of it as recording an amp completely dry, then adding effects later on the board. And even then, I don't saturate the tone with effects, but only use enough for a little ambience. Make sense?

Srini
 
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Srini

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Played a Tweaker 15 head for years. Great little amp. Sovteks aren’t “junk” tubes. They’re generally very robust and reliable. I’ve used them tons. Mesa, GT, and several others test, match, and relabel them. They’re solid IME.

One of the coolest things about the Tweaker is that it will accept any octal power tube pair without rebiasing or any modding. I found I liked mine best with EL34 bottles. But I’m much more of a Brit amp guy than F style. I have a friend who runs his on a pair of KT66 bottles and it’s a beast!

Congrats on a cool amp. Have fun with it!
Thank you, kind sir. I'm glad you mentioned other power tubes, because, while I'm partial to the 6L6 sound myself, I keep reading about how harmful the high current draw could be to the power transformer. Obviously, you have had no issues, so I'm encouraged! About the Sovteks, that was really my misperception of current production tubes. I had always bought into the NOS myth, but my experience with the RCA 6V6 tubes - on previous occasions as well - has not necessarily demonstrated any kind of superiority. So, I was obviously wrong about the Sovteks too!

Srini
 

Srini

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@Srini

NOS tubes are often a smoke screen. The absolute best thing they reliably do is separate the buyer from their money.

The reason why your earlier posts would hang your browser is probably because you added smileys; emoticons often cause this site's server to go into French Fry Pertater mode.

Qc6gV7Fm_o.gif
Thanks for that! I don't post often enough to get hip to the site's "features". I'm starting to believe you about the NOS thing, although one might argue that my 70-year-old ears are just not up to snuff any more!

Srini
 

Jakedog

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Thank you, kind sir. I'm glad you mentioned other power tubes, because, while I'm partial to the 6L6 sound myself, I keep reading about how harmful the high current draw could be to the power transformer. Obviously, you have had no issues, so I'm encouraged! About the Sovteks, that was really my misperception of current production tubes. I had always bought into the NOS myth, but my experience with the RCA 6V6 tubes - on previous occasions as well - has not necessarily demonstrated any kind of superiority. So, I was obviously wrong about the Sovteks too!

Srini
You will find a lot of internet myth surrounding the Tweaker series. Especially concerning transformer failures. To be fair, the Tweaker 40 amps had enough of them fail that I don’t feel uncomfortable calling it a known issue. To be sure they didn’t all go down, but enough of them did to realistically acknowledge it was a problem.

I’m unaware of, and have never seen any evidence of the 15 watt model having any such issues. Yet because of the 40 watt problem, it is now “common knowledge” all over the internet that “Tweakers have transformer problems”.
 

Srini

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You will find a lot of internet myth surrounding the Tweaker series. Especially concerning transformer failures. To be fair, the Tweaker 40 amps had enough of them fail that I don’t feel uncomfortable calling it a known issue. To be sure they didn’t all go down, but enough of them did to realistically acknowledge it was a problem.

I’m unaware of, and have never seen any evidence of the 15 watt model having any such issues. Yet because of the 40 watt problem, it is now “common knowledge” all over the internet that “Tweakers have transformer problems”.
That's great to know, thanks! If I'm not mistaken, EL34s draw a much higher current than 6L6s, am I wrong? If so, perhaps I should be safe with, say, 5881s?

Srini
 

Jakedog

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That's great to know, thanks! If I'm not mistaken, EL34s draw a much higher current than 6L6s, am I wrong? If so, perhaps I should be safe with, say, 5881s?

Srini
I don’t know. I’m not technical at all. I was just told early on that I could run any octal power tube I wanted in there. So I did. I tried 6V6 and 6L6. EL34 were great. GT makes a tube I really like. It’s like hot rodded EL34 but with more headroom. They call it the E34L. That’s what I finally settled on. I gigged it with those tubes for years. Hundreds of gigs. It always worked fine.
 

Srini

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Another quick update, guys, I'm afraid I may have egg on my face. Just to satisfy my curiosity, I played the amp for about 15 minutes with almost zero amp hum, then put the RCA 6V6s back in. I can't explain it, but the RCAs were dead quiet too. So, it must have been something else - maybe I didn't put the tubes in fully, or whatever - mea culpa.

The RCAs actually do sound very good, and the two main differences are that the RCAs have a little less low end - some might say more even sounding - and the note separation is better. Probably both good things, but the differences are pretty subtle. I have a pair of JJs coming in later this week, I'll let you all know how that turns out.

Amp-wise, I honestly couldn't be happier.

Srini
 

SixStringSlinger

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I had a Tweaker 15 combo that I bought as a floor model and used for about 10 years, including many trips in the trunk of my car and a couple of hot garages. The only thing that ever went "wrong" with it was a tube that went bad. I replaced it and on we went.
 

Vibroluxer

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I don't know if he's very accessible but Bruce Egnator is easily found on Facebook. His new amps are hardwired, very neatly, and sound nice. $1,600 for a head which isn't bad.
 

Dismalhead

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Hmm..that worked...must be the length, then...
I just had something similar happen on Strat Talk. I'd click "reply" and it would just show a red line like it was thinking and wouldn't make it official. Copy your post, hit refresh, and then paste it if it's gone and try again.
 
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