Victoria Tweed Super(5f4) = Bright. What speaker to tame and retain jensen vibe?.....

[tubeswell]

I second the 12AY7, it can really warm up the highs, tho you do lose some volume. I would try it in the first preamp tube or the phase inverter. Both if you need to warm it up more and it will still give you the volume.

I'll third it. A 12AY7 is a really bluesy sounding tube esp in V1 - just the ticket for those mid-late '50s tweed amps

[Bruce / Mission Amps]

Without making me re-read every comment... ha ha... are you plugged into the bright channel only with this complaint and if so, have you tried the tone from the normal or mic channel.... the only difference is the 1000pF bright cap across the volume pot of a real 5F4.
Personally I wouldn't use a 12AT7 anywhere in a 5F4. And for that matter, never use a 12AX7 in the first socket of these amps. Actually I think I like the 5E4 tube layout with two 12AY7s better.
Also, since it is an older one... check to see if someone has messed with the tone control circuit... I've seen some come in for tune-ups, modded with the old, single tone pot, tweed caps at .0047uF and 500pF..... it should be .0047uF and 250pF.

[gytyr1968]

I just noticed as written in the sticker inside the amp, that it takes a 5751 in the first position.
I thought it took a 12ax7. I'm not familiar with a 5751...?
How would this tube affect tone? Less vol? More/less breakup? What is compared to? Somewhere between a 12ax7 and 12ay7?

Thanx
- Robert

[kleuck]

5751 imo sound just like 12AX7, just slightly lower in gain, where 12AY7 gives another sound and responsiveness, not necessarily better, but it's more interesting to test.

[gytyr1968]

OK thanx
I guess I'll stick with the 12ax7 then since I want more gain. ...and its a Mullard. Plus the fact that i have some telefunken 12ax7's layin around too. Better to put them to use then waste more money on another style of tube.
-Robert

[kleuck]

If you need more gain, try TFK, Siemens, EI long and smoothplate, or the old Tung-Sol long plate.

[Corona Blue]

As far as speakers go... if you're on a budget, but still want quality... the best bang for the speaker buck I have found for a tweed amp is the Weber Signature Series. The ceramic 10" with FLAT cone in particular have a great balance. The speaker will break up at volume but in a pleasing way. You could also get one ceramic and one alnico -- one flat cone, one ribbed. The alnicos have a slight mid scoop, a nice chime, and a sweet compression. A lot of guys were raving about them a couple years back and I was dubious... A $35 speaker? Sure, right... Man, when I heard it, I was knocked out!!

HTH,

CB

P.S. You probably know this, but sometimes going UP in a speaker's wattage rating will serve to dampen some of the high frequencies. Food for thought.