#1
Hey again,

I was wondering what would be the difference between these two amps running an Ampeg 8x10 at 800W RMS

http://www.musiciansfriend.com/product/Ampeg-V4BH-100-Watt-Tube-Bass-Head?sku=481716

http://www.musiciansfriend.com/product/Ampeg-SVT1000-Bass-Head-?sku=481483

Would the tube amp be underpowering? What would you suggest between the two amps? (or even a different brand, like Mesa, Eden, etc.)
#4
Quote by enzoslashslash
Hey again,
I was wondering what would be the difference between these two amps running an Ampeg 8x10 at 800W RMS
http://www.musiciansfriend.com/product/Ampeg-V4BH-100-Watt-Tube-Bass-Head?sku=481716
http://www.musiciansfriend.com/product/Ampeg-SVT1000-Bass-Head-?sku=481483
Would the tube amp be underpowering? What would you suggest between the two amps? (or even a different brand, like Mesa, Eden, etc.)
The bigest problem here is the weight, even the all tube 100 watter is 40lbs but I'd find it rather limited tonewise.
G&L L2500
Squier Affinity Jazz Bass 5
Ashdown RPM pre-amp
Ashdown Little Giant 1000
300 watt 15" powered cab
450 watt 15" powered sub bass cab
2x10 + horn
1x15x10 + horn
#5
I'm not too crazy on that first one you posted, plus it's not part of the SVT line so that shoul tell you something. I tried out a SVT450h, solid state but I liked it quite a lot, had more power which was what I was hoping for.
#6
The SS amp will be considerably louder than the tube amp. A 100w tube amp is like a 250w SS amp. It isn't going to be four times as loud, but it will give you more headroom.

I'd say go with which one you think SOUNDS better. You can always run it through the balanced outs of the house if the tube amp isn't loud enough (it should be, though).
American Ash Deluxe Tele
Squire Standard Strat w/ Texas Specials
'65 Fender Deluxe Reverb RI
'53 Fender Deluxe 5C3
California Dreamer
Valve Junior
2X12 Avatar w/ V30's
#7
Its always got to be the SVT. the svt range has always been Ampeg's flagship. I have an old SVT-III (Not the pro version) thats valve pre and MOSFET power section it sounds great. SVT all the way, you should have a look at their SVT Pro stuff too.
Epiphone EB-3 SG Bass
Ampeg SVT-III Head
90's Laney Custom 1x15 300watt Cab
Ibanez Tube Screamer
70's Jen Electronics (now Jim Dunlop) Cry Baby Standard
Dano Milkshake Chorus
Arbiter Fuzz Face
Zoom GFX-5 Processor
Planet Waves Cables
#8
Cool, thanks, I meant more of a "for example" type of thing. Would 100 watts tube power an 8x10?
#9
For examples check out the whole SVT range at ampeg.com

100 watts tube would power an 8x10 i know many people who have, but i would be tempted to go for a higher power MOSFET power amp as they are more reliable. as i said with my gear, SVT-III is extremely popular, as are the SVT-II and SVT-VI
Epiphone EB-3 SG Bass
Ampeg SVT-III Head
90's Laney Custom 1x15 300watt Cab
Ibanez Tube Screamer
70's Jen Electronics (now Jim Dunlop) Cry Baby Standard
Dano Milkshake Chorus
Arbiter Fuzz Face
Zoom GFX-5 Processor
Planet Waves Cables
#10
The V4BH is essentially an SVT amp, people always get confused with it having the different name. It has the tube preamp from the SVT-CL, and then a slightly modified (less powerful) version of the SVT-CL's power amp.

I would personally go for the tube amp, purely for the authenticity of the sound. 100watts of tube power is more than sufficient for a single 8x10, so you should have no qualms there.

EDIT: Did any of you who said the V4BH was inferior to all SVT heads read the description at the top of the page he linked us to?

I QUOTE:

"The Ampeg V4BH 100 Watt Tube Bass Head is similar to the SVT, just smaller in output (100W). It uses the same tubes in the preamp and drive sections (2 - 12AX7 in the preamp, a 12AU7 and 12AX7 for drive). For the power section it uses 4 6L6s."

Last edited by fake_sk8r182 at Jan 28, 2007,
#11
^ Hey, thats good to know, thanks.

I was just wondering how it added up mathematically and in what situation I should fear underpowering the cabs with 100 watts of tube power.
#12
My little 5w guitar amp is powering a 120w cab just fine. Most speaker coils are fairly efficient so you can even get down to the 1/8w range and still be able to power a half-stack.
American Ash Deluxe Tele
Squire Standard Strat w/ Texas Specials
'65 Fender Deluxe Reverb RI
'53 Fender Deluxe 5C3
California Dreamer
Valve Junior
2X12 Avatar w/ V30's
#13
Quote by andrew7667
My little 5w guitar amp is powering a 120w cab just fine. Most speaker coils are fairly efficient so you can even get down to the 1/8w range and still be able to power a half-stack.
What you must ask yourself is why they produce amps of several hundred watts, at my age I certainly wouldn't be lugging 750 watts around if 5 watts would do the job.
G&L L2500
Squier Affinity Jazz Bass 5
Ashdown RPM pre-amp
Ashdown Little Giant 1000
300 watt 15" powered cab
450 watt 15" powered sub bass cab
2x10 + horn
1x15x10 + horn
#14
Quote by andrew7667
The SS amp will be considerably louder than the tube amp. A 100w tube amp is like a 250w SS amp. It isn't going to be four times as loud, but it will give you more headroom.

I'd say go with which one you think SOUNDS better. You can always run it through the balanced outs of the house if the tube amp isn't loud enough (it should be, though).



Erm...

please tell me if im wrong

but.

a Valve/tube amp of the same wattage as a solid-state amp is louder, more like


30 Tube/valve watts = 100 solid-state watts
Yeah, now you're gonna die wearing that stupid little hat. How does it feel?

Help me to live.


I make custom guitar wiring harnesses and I'm pretty damn good at it!
#16
Quote by jazz_rock_feel
^ But a 100 tube doesn't equal 1,000 (or 500) watts SS.

indeed, well the difference begins to reduce at higher wattages i 'spose
Yeah, now you're gonna die wearing that stupid little hat. How does it feel?

Help me to live.


I make custom guitar wiring harnesses and I'm pretty damn good at it!
#17
I played in a powerful Classic Rock/Blues Band with this rig (all of 120 watts), it held its own against two valvestate Marshalls and a drum kit.
Amp;- Orange OD120
Cabs Self Build 1x15" 2x10"+ Horn.
Attachments:
Orange Stack.jpg
G&L L2500
Squier Affinity Jazz Bass 5
Ashdown RPM pre-amp
Ashdown Little Giant 1000
300 watt 15" powered cab
450 watt 15" powered sub bass cab
2x10 + horn
1x15x10 + horn
Last edited by John Swift at Jan 29, 2007,
#18
Alright, I got a response from an ampeg rep:

Hey Lorenzo,

Yes the V4B might be a bit underpowered for the 810 cab. 100 watts all
tube is equal to about 300 watts solid state. I would suggest the
SVT1000 over the V4B for this cabinet although I think the V4 is a
better sound amp tube wise. The SVT-CL is the amp to go with for this
cabinet though. 300 watts all tube!!
Hope this helps, feel free to drop me a line anytime.....

Thanks for choosing Ampeg!!!!

Dino Monoxelos
Global Ampeg Product Specialist
LOUD Technologies Inc.
ampegsupport@earthlink.net
dino.monoxelos@loudtechinc.com
www.ampeg.com
#19
i agree. just because tube power is LOUDER than transistor power, it doesnt mean it is sending a physically more powerful signal to the cabinet. tube seems louder because it sends an analogue wave to the speaker instead of a digital one sent by transistors.
Epiphone EB-3 SG Bass
Ampeg SVT-III Head
90's Laney Custom 1x15 300watt Cab
Ibanez Tube Screamer
70's Jen Electronics (now Jim Dunlop) Cry Baby Standard
Dano Milkshake Chorus
Arbiter Fuzz Face
Zoom GFX-5 Processor
Planet Waves Cables
#20
^ No, it's not an analogue signal that makes valve amps louder. You can have analog transistor amps, I think most bass amps are analogue. (exceptions would be modeling stuff like Roland Cube's and some Line6 amps.)

Tube amps sound louder because as you turn up the volume the tubes distort, but very subtly. Our ears perceive this as volume, not distortion because it is so smooth and subtle.

Go down towards the bottom, after PMPO is explained:

http://users.chariot.net.au/~gmarts/amppower.htm

And have a read of the rest of the site too, lots of good info.
"You can practice to attain knowledge, but you can't practice to attain wisdom." - Herbie Hancock