#1
Ok, I have a 15 watt speaker cab and I need something to power it.
I'm looking for volume, but it's gotta sound good too :[
My question is: I know the tube head is gonna be louder, but this is a vintage speaker, so I REALLY don't want to destroy it, why is the tube amp louder at the same watts, and should I be concerned?
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#3
Tube for sure. If you want to, try running the head through a crappy 15W speaker first to see if it works.
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#4
You need a MUCH lower wattage for the amp head.

15 watt amp head =/= 15 watt speaker.

The louder the power amp goes, the wattage goes up too. Which means you will not get very loud at all if you don't want to rip your speakers apart.

5 watt/7.5 watt valve amp head's should be fine though.

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#5
Quote by Chrisiphone
You need a MUCH lower wattage for the amp head.

15 watt amp head =/= 15 watt speaker.

The louder the power amp goes, the wattage goes up too. Which means you will not get very loud at all if you don't want to rip your speakers apart.

5 watt/7.5 watt valve amp head's should be fine though.

I've heard matching speaker wattage is fine
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#6
Quote by Chrisiphone
You need a MUCH lower wattage for the amp head.

15 watt amp head =/= 15 watt speaker.

The louder the power amp goes, the wattage goes up too. Which means you will not get very loud at all if you don't want to rip your speakers apart.

5 watt/7.5 watt valve amp head's should be fine though.


Are you sure of this? It's not about the volume it can handle, it's about wattage, as far as I know... I think (and that's not a "my opinion is" thing, it's an "I think, but I might be wrong" thing) it would work fine...
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#7
Quote by Woogles
I've heard matching speaker wattage is fine


I think that might be ohmage.

If you have a maximum speaker handling of 15 watts, and you use a valve amp rated 15w RMS clean, I think if you push the amp (turn up the volume/power amp) it increases the wattage of the amp and exceeds the limitations that the speaker can handle.

On the other hand I could be completely wrong so.

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#8
15 watts should just the thermal rating, so that speaker should be able to handle 40-50 watts of whatever.
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#9
Hmmm, so what about an Epiphone Valve Jr.? It's supposed to be 5 watts...
My speaker should be about 15 Watts.
But how loud is that gonna be?
What I need right now is an amp for gigging...
Quote by genghisgandhi
make the bass more bassy

Quote by grohl1987
You really like input jacks, don't you?

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#10
The 15W speaker should work with a 15W tube amp head. Most of the time the speakers are rated lower than their actual ability. If you are really worried about the speaker blowing, then just lower the volume somewhat on the amp and mic the cab.
#11
Quote by fatgoogle
15 watts should just the thermal rating, so that speaker should be able to handle 40-50 watts of whatever.
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#12
You'd need to mic it to gig with it. A VJ head (or any 5w tube amp/head) should be fine with that speaker.

EDIT: Is this about your cab from that other thread?
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Last edited by bv310 at Aug 8, 2009,
#13
Quote by bv310
You'd need to mic it to gig with it. A VJ head (or any 5w tube amp/head) should be fine with that speaker.

EDIT: Is this about your cab from that other thread?


One and the same. Yeah :]
Quote by genghisgandhi
make the bass more bassy

Quote by grohl1987
You really like input jacks, don't you?

My Gear
Epiphone Les Paul Standard Plus Top
Greg Bennett Acoustic
Epiphone G-1275
#14
Cool, but I think this is going to get closed. One thread per topic and all that jazz.

Another option amp-wise is the Peavey ValveKing Royal 8 or the Gretsch G5222/ Fender Champion 600 (they're almost the same amp.)
R.I.P. Les Paul, 1915-2009

A man chooses, a slave obeys.
#15
Chrisipone, you are totally wrong.

Speakers are rated at RMS. A 15w speaker can handle a 15w amp, and about another 15 or 20 watts.

A good rule of thumb is that a speaker can safely handle double it's rated wattage.
#16
Quote by Invader Jim
Chrisipone, you are totally wrong.

Speakers are rated at RMS. A 15w speaker can handle a 15w amp, and about another 15 or 20 watts.

A good rule of thumb is that a speaker can safely handle double it's rated wattage.


Ahh okays!

I thought something smelt a bit fishy when someone told me that, but I guess it did fit together in an obscure kind of way!

Least I know the truth now

Epiphone Les Paul Standard w/ SD Alnico Pro II's
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#17
Quote by bv310
Cool, but I think this is going to get closed. One thread per topic and all that jazz.

I hope not. This thread is dealing with a more specific question: The differences between tube and SS amps, and how big ur speaker should be vs. ur amp. I can't help what other users post, but in the future I will try to make sure that they deal with separate topics.
Quote by genghisgandhi
make the bass more bassy

Quote by grohl1987
You really like input jacks, don't you?

My Gear
Epiphone Les Paul Standard Plus Top
Greg Bennett Acoustic
Epiphone G-1275