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Greenboy basic 15 cab farting out on lower notes?

#21
I have a 12" Faital woofer in a cab I recently built, and am not surprised by your comment of your 15 "farting" out. This 12 just distorts in a bit of a non-musical way on lower notes. Conversely, a similar cab done with an Eminence Kappalight sounds well rounded and perfectly musical all the way to the lower "B". Same amp. I'll not likely invest in the Faital woofers again.
 
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#22
jTrolt said:
I have a 12" Faital woofer in a cab I recently built, and am not surprised by your comment of your 15 "farting" out. This 12 just distorts in a bit of a non-musical way on lower notes. Conversely, a similar cab done with an Eminence Kappalight sounds well rounded and perfectly musical all the way to the lower "B". Same amp. I'll not likely invest in the Faital woofers again.
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That fits better than anything else so far
 
#23
jTrolt said:
I have a 12" Faital woofer in a cab I recently built, and am not surprised by your comment of your 15 "farting" out. This 12 just distorts in a bit of a non-musical way on lower notes. Conversely, a similar cab done with an Eminence Kappalight sounds well rounded and perfectly musical all the way to the lower "B". Same amp. I'll not likely invest in the Faital woofers again.
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Not on a properly designed cabinet it won't.

I have extensive experience with Faital drivers, this is simply not true unless you are driving it well beyond its limits (which is not the case of the OP's speaker).
 
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#25
I have a Dually loaded with 15PR400s. AFAIK it's essentially a double Bassic. It takes big power effortlessly and produces what I consider pretty strong lows. I can't imagine a CTM 100 pushing a properly designed Bassic with a healthy 15PR400 anywhere near its limit.

I do agree that the way the 15PR400 handles distortion is not particularly musical IMHO (YMMV).

I have a CTM300, which is supposed to use the same preamp as the CTM100. The preamp is fairly high gain and designed for OD. However when pushing the output section into drive, it's possible to get some pretty nasty splats if the distortion starts in the lows.

I would try dialing back the bass on the CTM100 if you intend to push it into OD territory.
 
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#26
jTrolt said:
Considering OP's driver was placed in a cab designed for greenbacks, which
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Check your facts:

upload_2023-9-4_14-42-47.png
 
#28
jTrolt said:
AH! Greenboy not Greenback.
Thanks.

What we've established so far:
They have a bad sounding Faital.
It's placed in a properly designed cabinet.
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No, we haven’t established this at all.

We’ve ruled out almost nothing at this point. We don’t even know if it’s the speaker or the amp!!!
 
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#29
Cutty said:
(i have used it with different amps so it's not that)
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What other amps are you using? Is it the same low notes farting out with each different amp?

Have you use the rig in a different location? Like outside, as suggested by someone.

Could it be the bass? Like maybe your pickup height is too high near the low string, causing too much output?


------

I used to have a GreenBoy Bassic with the Faitel PR15 -- actually had two of them;)
 
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#30
eniac said:
CTM100 tone controls are passive, so their behavior probably mimics (but may not exactly duplicate) a Fender-style tone stack. I'm guessing the all-noon setting you're using is a significant departure from true flat.
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Interesting thought.

I know I don't like the Fender Tone Stack at all.

Not that there's anything wrong with it, I just don't want to deal with it. :)
 
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#31
Cutty said:
the cab was built with the standard port length so i wonder if anyone has had this problem too,Thanks,Cutty.(i have used it with different amps so it's not that)
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Well, if all other testing and options suggested already have been exhausted and you remain convinced it's the driver or the cabinet, you may need to verify the original manufacturer's posted spec's with a woofer tester.

Find someone with the proper equipment and knowledge to test/measure that exact driver, and indeed, you and I both may need some modification to the ports or another of our cabinet's properties for the Faital's to properly do their job. If I have not done all my homework properly in this respect, I should not be concluding this brand is inherently flawed, as I flippantly implied earlier, simply because it was the same brand. Natural to do so, but not the intelligent response. I have not done due diligence, so please, accept my apology for offering disrespectful, unprofessional, uninformed opinions here.

That being said, on previous builds, I've certainly seen some wild variations of the T/S parameters from OEM spec's when the actual driver you received is tested through proper equipment, (and I'm talking another high-end Italian mfgr, not some bargain basement specials here). Like you, I trusted the printed specs, expedited my build, and have a less than optimal sounding cabinet. And it's likely my fault, and the risk you take building your own gear. This is the homework required to establish if, in fact, that cabinet is crafted 100% accurately for the actual driver in your possession. Factory printed Thiele/Small parameters should be reliable, but manufacturing tolerances can vary.

Then how do the brand names build cabinets with no problems with such variances?
I'll leave it to those in the business to answer that.
But I have a hunch where the off-spec batches get sent to be sold and who's hands they potentially end up in....:bored:

Does this mean the amp is not the culprit? No, but, as re-stated above, from the original post: "(i have used it with different amps so it's not that)". I'm just suggesting, if that's already been concluded, a re-examination of the build and driver spec's may be the only other option.

Just trying to help - I hope I've not ruffled any more feathers. If so, feel free to ask me to drop out of the conversation so a more informed individual can guide you to a resolution.
 
#32
Quality drivers (like the one being discussed) hold their TS parameter specs to +/-10%, there is nothing at all to suggest that this is the issue. In fact, I have plenty of production data to suggest that it's almost certainly not the issue. You are way jumping the gun here regarding suggestions IMO.
 
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#33
eniac said:
CTM100 tone controls are passive, so their behavior probably mimics (but may not exactly duplicate) a Fender-style tone stack. I'm guessing the all-noon setting you're using is a significant departure from true flat.
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"Passive" doesn't necessarily indicate a "Fender-Style" tone stack.
The James tone stack - used on the Ampeg B15 - is a passive tone stack. It's cut/boost.

Not a lot of info on the Ashdown website.
Even so,,, the all noon setting on a 100w tube amp - at home volume - should not be causing that speaker to fart.
 
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#35
hennessybass said:
What other amps are you using? Is it the same low notes farting out with each different amp?

Have you use the rig in a different location? Like outside, as suggested by someone.

Could it be the bass? Like maybe your pickup height is too high near the low string, causing too much output?


------

I used to have a GreenBoy Bassic with the Faitel PR15 -- actually had two of them;)
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I also use Markbass 800,and a GK Legacy500,all do the same thing,bass is a 2008 P bass,also a Jazz bass (passive)it farts with all.
 
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#39
eniac said:
CTM100 tone controls are passive, so their behavior probably mimics (but may not exactly duplicate) a Fender-style tone stack. I'm guessing the all-noon setting you're using is a significant departure from true flat.
Click to expand...
It's passive, as in it can only take tone away. All at noon, is cut by half the knob's range. Flat would be everything at 10.
 

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