Celestion TF1020 cabinet design

SeismicAssault · #1 05-06-2011, 08:29 PM

I've been thinking about getting some of the blowout Celestion TF1020 cabinets that are being sold by avatar ... I was wondering whether anyone has entered the data into WINISd to try to get an optimal cabinet size for these things.

I was hoping to use 2 of the 16 ohm speakers in parallel as a full-range 2x10 cabinet for the 100W channel of a GK 800rb.

billfitzmaurice · #2 05-06-2011, 08:35 PM

They're incapable of going low and can't take more than 20 watts below 100 Hz before reaching their excursion limit. If you only want a driver for above 100 Hz they'd be OK, stick them in a sealed cab about .5 cu ft per driver.

SeismicAssault · #3 05-07-2011, 04:11 AM

So if I'm building a 2x10, and I'm only using it with the 100W portion of an 800rb, that would give me 40W below 100 Hz. I'm only using a 4 string ... so would that be sufficient? I don't know what percentage of the bass signal is below 100 Hz and what is above it.

How about if I built a larger, ported cab?

billfitzmaurice · #4 05-07-2011, 06:00 AM

Quote:

Originally Posted by SeismicAssault

So if I'm building a 2x10, and I'm only using it with the 100W portion of an 800rb, that would give me 40W below 100 Hz. I'm only using a 4 string ... so would that be sufficient? I don't know what percentage of the bass signal is below 100 Hz and what is above it.

How about if I built a larger, ported cab?

Some 70% of the demands on the speakers are below 100Hz. You could only use these along with another speaker to handle that 70%. A larger ported cab would make no difference, these drivers are just not good for use below 100Hz. Celestion even says so on the spec sheet, you just have to read between the lines.

lbwdog · #5 05-08-2011, 06:44 AM

For the money, one would probably serve better (although not optimally) in a mid/high cab for bi-amping with the 800RB, depending on what you have for the low end cab.

Bjess002 · #6 12-20-2011, 12:57 PM

I want to go ahead and resurrect this. I am thinking about doing something similar and would like to know how everyone thinks the result would be.

I currently have a Backline GK 410 (400wts 8OHM) that I want to upgrade. Putting four of these Celestion TF1020 would up it to 800wts and allow me to push a bit more power from my Gk 1001RBii.

Anyone have experience with these speakers? Would the cabinet work with these 10s? A lot of this tech heavy talk is over my head so your patience and layman's would be appreciated.

will33 · #7 12-20-2011, 01:09 PM

The tech talk says they'd start farting out at 80 watts, not 800. That's not 80 watts each, that's the sum total of all 4. They'd be suitable as a midrange driver crossed to a 15 or 18 for lows. Useless as a full range bass guitar driver for anything other than very low power amps.

rpsands · #8 12-20-2011, 01:19 PM

The backline cabs probably can't handle much more under 100hz.

billfitzmaurice · #9 12-20-2011, 01:25 PM

Quote:

Originally Posted by Bjess002

I want to go ahead and resurrect this..

Did you not read read their epitaph? They're incapable of going low and can't take more than 20 watts below 100 Hz.
Let them lie in peace.

craig.p · #10 12-20-2011, 05:51 PM

They might serve well in rare, specialized cases. Lou Reed's live album from maybe 30-35 years ago featured a bass player who was real bippy-bappy, all midrange, with no low end at all. More recently, take a listen to Black Velvet by Alannah Miles. That bass player could probably get by fine (on that cut, anyway) with what you have in mind. But for general BG duty, no way. I've modeled those things several times in various sized cabs and they don't come even close to what I'd need for general-purpose work.