• TalkBass has been independent since 1998. Add your voice.
    Create a free account to reply to discussions, view embedded media, and browse with fewer display ads.
    Join freeLog in
    Want zero display ads or expanded classifieds tools? Compare plans.

What Sounds Like An Ampeg B-15?

Just spitballin' here but what current amp (combo?) would come close to sounding like an Ampeg B-15?

I'm assuming that a 15 inch speaker would be needed so an Ampeg PF-350 w/1x 15 cab? An Ampeg PT-50 (their tube head) with the same cab? A Fender Rumble 200? Any other suggestions?

Thanks.
I own a 1965 B-15NF that I'm currently restoring. Recap...etc. I'm an electronics tech and restore vintage amps. I know that I'm going to get poo-pooed but my daily drive is a Bugera Veyron Tube into a Peavey Headliner 4X10 Cab. Nothing sounds like the B-15 but this rig gets close enough for me. I get some nice SVT'ish tones too. It's light (around 5lbs or so). Has 3 12AX7's in the preamp and a lot of power. All in all. I've been impressed with it for the 4 years I've owned it. I did change out the preamp tubes shortly after I purchased this in 2018.
20211201_190831.jpg
 
Just spitballin' here but what current amp (combo?) would come close to sounding like an Ampeg B-15?

I'm assuming that a 15 inch speaker would be needed so an Ampeg PF-350 w/1x 15 cab? An Ampeg PT-50 (their tube head) with the same cab? A Fender Rumble 200? Any other suggestions?

Thanks.
I’ve used both a PF50T and 20T…both sound incredibly similar, but honestly, I prefer the PF20T. I can’t really explain other than to say the tube break up sounds more B15ish.

As others have said, the double baffle 15” cab plays a huge factor. The upper notes have this creamy bell-like quality that really like and hard to achieve in many modern cabs. My cabs were made by Vintage Blue.

I also recently acquired a Sushi Box SBVT tube preamp pedal. It gives the 20T more tonal options…ultra high/low, midrange selector.

So far, this has been my fav recording setup.
16C96174-DAC2-4442-954E-796D852B8813.jpeg
 
I've heard demos of this Broughton pedal that sounds pretty AWESOM!!!!

 
I've heard demos of this Broughton pedal that sounds pretty AWESOM!!!!

I had one and didn't think it sounded all that much like an Ampeg but is a very nice pre amp.
 
  • Like
Reactions: butterfingers1
Man! I'm 73 yrs old and I'd love to try an Ampeg B-15. You'd think that I would have come across one in my life time.

Seems like I read somewhere that at one time many years ago, it was the #1 studio bass amp. I would guess that it would be an amp used for more conservative bass sounds. As for contemporary sounds of slapping or high pitched twangy bass, I would think that the B-15 would have limitations

Interestingly, they rate at only 25 to 30 watts.

I wish I could give an answer to this thread.

I use an Acme Low B 2-10 bass cab and I can get a very traditional bass sound, especially with flat wounds.

I would think that many contemporary amps and cabs with eqing could get acceptably close. I don't know.
 
  • Like
Reactions: DJ Bebop
First, it depends on which B-15 you are trying to emulate. The classic B-15 (usually with a N after it) or the B-15S. The S and the B-25B are essentially the same tube configuration with 7027A.

The classic/N is different. Then we can get into type of speaker (i.e. Jensen? Something else?) and type of cabinet like a double baffle.

I have played both types, owned a '63 for about 30 years with an original Jensen in a double baffle as well as a B-25B and a V-4B. I even owned the B-15R which was IMO not very good.

I have tried TONS of things to emulate them. The closst I got was with a deconstructed B-15N setup with the Broughton P-15, a power amp, and tue TwoNotes CAB M+ for power amp tube emulation. Once I added power amp simulation, it added a little bit of magic that got me closer. Most things just do the tone stack only. You can even get IRs for B-15 cabs but that is a whole different ball of wax.

I had the VT Bass, Sushi Slampegg, Broughton Fliptop, and many others. None were as close. The Fliptop was not close at all to my ears. The Slampegg had Ampegness. There are others I did not try.

I know there are also newer amps that do it as well to a degree. The Venture supposedly does a good job. That said, the closest in any amp I heard were the Rocket B-50R or B-100R even though they were solid state.

I am done trying at this point but it is a fun quest. IMO Nothing is like a classic B-15 because it is a full system meant to played that way but you can get close enough for government work using other things it you need or want "that" sound.
 
Last edited:
  • Like
Reactions: DJ Bebop and Jim C
Man! I'm 73 yrs old and I'd love to try an Ampeg B-15. You'd think that I would have come across one in my life time.

Seems like I read somewhere that at one time many years ago, it was the #1 studio bass amp. I would guess that it would be an amp used for more conservative bass sounds. As for contemporary sounds of slapping or high pitched twangy bass, I would think that the B-15 would have limitations

Interestingly, they rate at only 25 to 30 watts.

I wish I could give an answer to this thread.

I use an Acme Low B 2-10 bass cab and I can get a very traditional bass sound, especially with flat wounds.

I would think that many contemporary amps and cabs with eqing could get acceptably close. I don't know.
This is a more modern use of a B-15.
Marcus Miller recorded through a B-15 on this song with his 70s bass before the preamp was installed, he spoke about it in an interview. Slap, thump, and all…



:)
 
Last edited:
  • Like
Reactions: Rev_Slinky
I own a B-15N(C) I've had it since my undergraduate years in college. Since it's a Double Baffle Reflex Enclosure, nothing currently out their quite like it. That said, I played the PF-350 into one of their early 115 cabinets and

felt it sounded quite a lot like my B-15N, B100R's are great amps and relatively available on the used market. Both those amps have a simple Baxandall Tone Stack so to my ears they sound more like a B-15N then the PF 500 or PF 800 with

the SVT EQ section. Don't get me wrong both are great, but one of the things that makes a a B-15 a B-15 is simplicity and economy of scale. So it's a low wattage tube amp with overlapping tone controls and a double baffle reflex cabinet.
B100R is darn close
 
  • Like
Reactions: DJ Bebop