Speaker to LOWER brightness and volume?

bigredguy

Member
Messages
198
I have a tweed clone amp, 1x12", that I absolutely love!
50 watts with five 12AX7 tubes and four EL84 matched output tubes

It has a basic stock (no name-8ohm) speaker and although I can live with the sound,
I thought it might benefit from a speaker upgrade. The cleans can get a bit bright and thin.

Is there a speaker that I can add that will smooth out the cleans and also lower the perceived volume...this thing is loud! It also has cab outputs in 4,8,and 16 ohm varieties so I could just add a cab with another speaker to get my wishes?

Thanks!
 

jlagrassa

Silver Supporting Member
Messages
6,373
You might want to try some JJ ECC83S tubes, they can definitely help with bright amps! A Eminence Cannabis Rex is good at taming some top end as well but is a very efficient speaker!
 

bigredguy

Member
Messages
198
so the lower preamp tubes plus a hemp speaker might be what I am looking for?

can the ECC83s be swapped straight out for the 12AX7's? (by a tech, not by me!)
 

cratz2

Silver Supporting Member
Messages
11,253
I have a ceramic Blue Dog in my 5E3 clone and couldn't be happier. I've also tried it with a Celestion Blue, a Fender/Eminence Special Design and through a pair of JBL K120s.

I really like the big bottom end of the Blue Dog and how the highs, while prominent, never seem too aggressive. I doubt many would ever call it 'thin'.

I'd also consider a EV 12L or a Weber Michigan, but none of these speakers will do much to reduce the output as they are all relatively efficient.
 

gill

Member
Messages
726
believe me, you won't need tech to swap out the preamp ubes. It's very simple and would not require rebiasing live the Power tubes
 

soundchaser59

Thank You Great Spirit!
Gold Supporting Member
Messages
12,661
The Michigan I dont think is as efficient as some of the others. I have done side by side with Michigan and several others. Side by side with the EVM12L the Michigan had to be turned up louder to sound similar volume, and it is not brutally honest like the EV's are. The Michigan smooths out the highs quite a bit but without being dark. It is well balanced, and tighter sounding when new, it is my favorite all around speaker at the moment......but only because I cant afford all the Tone Tubbys I want!

I had Blue Dogs and Silver Bells but I prefer the tighter sound of the heavyweight magnets and coils when it comes to Weber speakers.
 

rockon1

Platinum Supporting Member
Messages
12,980
Without knowing the efficiency of the stock speaker its impossible to say what speaker will be lower efficiency. If the amp is fixed bias you can pull two tubes to bring it down to 25 watts. Yeah I know somebody will chime in "its only 3db difference" but it gets the amp cooking a bit sooner-especially an EL84 based amp. Bob
 

Gtowngearhead

Member
Messages
840
For the OP.. ECC83S are 12ax7s, so a swap would really get you no benefit other than hearing how different 12ax7 tubes sound... If you feel like shelling out a little extra, most TGPers will tell you that 5751s are your next option. I've used 12at7s, not a favorite TGP option, but they work just fine in my hot rod deville. Maybe a 12ay7 if you're really feeling like a drop in sound...
 
Last edited:

bigredguy

Member
Messages
198
I've used 12at7s, not a favorite TGP option, but they work just fine in my hot rod deville. Maybe a 12ay7 if you're really feeling like a drop in sound...
are we talking a drop in volume? Not quality, Right??I like the feel of the sound and it really is nice, just a little volume range drop would be nice....

also, I am seeing mNy folks reccommend the hemp cone speakers or something cloning a blue....must research more!
 

A440

Silver Supporting Member
Messages
4,696
+1 for the c Rex!

It tames the highs and perceived volume is lowered.
 

Gnarlly

Member
Messages
2,862
Celestion G12-65 or a clone. Efficiency is about 96db/watt (fairly ineffecient compared to most of the Celestion line), and with nice mids and smoothed, rolled-off highs. Work great to counter bright Marshall amps. I'd guess it would sound great with a bright Tweed also.
 

jchan

Member
Messages
1,683
Celestion G12-65 or a clone. Efficiency is about 96db/watt (fairly ineffecient compared to most of the Celestion line), and with nice mids and smoothed, rolled-off highs. Work great to counter bright Marshall amps. I'd guess it would sound great with a bright Tweed also.
+1, that is a great speaker and very smooth.
 

Rattle&Hum

Member
Messages
276
Yes, I meant a volume drop. Low efficiency speakers will also help. You could also pull 1 pair of your power tubes....
12AT7 and 12AU7 tubes are lower-gain tubes than 12AX7's. Its because of the lower gain there is a perceived drop in volume. If the 12AX7's are providing a certain drive or gain threshold you like, don't change them.

Lower-gain tubes will really change the overall character of the amp for a couple reasons... 1) The preamp isn't working as hard. Much of the preamp clipping you like would be lost. 2) The signal coming from the preamp isn't driving the PI or power tubes as hard - thus less drive.

Try a new speaker before you start experimenting with tubes. You'll find a more dramatic difference with the speakers (tubes are more subtle than speakers) and you won't want to make too many changes all at once.
 

mad dog

Gold Supporting Member
Messages
10,975
Greenback would do it. If you can find one, the old Jensen C12PS ceramic ... small magnet. That's my favorite lower efficiency ceramic.
 

jchan

Member
Messages
1,683
Greenback would do it. If you can find one, the old Jensen C12PS ceramic ... small magnet. That's my favorite lower efficiency ceramic.
Greenbacks are great, probably my favorite all time speaker. However, he said the amp is 50 watts, greenbacks are rated at 25 watts. Perhaps you can use a cabinet with 2 greenbacks or get a Scumback M75 rated at 65 watts.
 




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