• 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 free Log in
    Want zero display ads or expanded classifieds tools? Compare plans.

SWR Goliath III replacement speakers

#101
So Francis, you must have done the filtering for flat response in the analyzer if you used white noise as the source?
 
#102
agedhorse said:
So Francis, you must have done the filtering for flat response in the analyzer if you used white noise as the source?
Click to expand...
That's what I don't remember very well. My guess is that I was satisfied to see flat response in the loopback test, and didn't investigate any further. IIRC there was also a way of storing the loopback signal and using it as a weighting function. The FFT produces data points that are equally spaced in frequency space, so I think you get the correct weighting function for white noise (equal amplitude per unit of bandwidth) for free. Now I've got to dig back into the math, dagnabbit. ;)

But it's an awful way of doing the measurement, because I think that pink noise plus appropriate weighting gives a much better signal to noise ratio across the audio band for a given amount of overall power. My tone cluster waveform gives a flat graph in one measurement with no weighting, because it chooses sinusoids that are expected to match up with single data points in the analyzer. The only pitfall is if something "interesting" is happening in between data points, but I think that's an acceptable risk for hobbyist testing.
 
  • Like
Reactions: SNCpre
#103
Traditionally, the exciting signal was pink noise because that naturally worked well with fixed octave filters (typically 1/3 octave) because the energy per octave increases at the same rate that pink noise filter decreases that energy resulting in the two functions canceling out yielding a straight line. It also approximates the energy density present in natural sound.
 
  • Like
Reactions: fdeck and SNCpre
#105
Have you contacted Eminence directly and asked them what they recommend for the cab? Considering they were providing Fender/SWR with the drivers for the cabs for a number of years, I bet they can suggest the nearest/best substitute. My apologies if you've already done so.
 
#108
PawleeP said:
The Goliath Jr III i have is 1/2" taller (height) than my 210t Workingman. Rekon it is to allow the larger Horn for the tweeter. Not sure if the crossover points are different for the different looking tweeters. Sorry if the thread is too old.
Click to expand...
The Workingman is a different cabinet. I was talking about how it's possible on the later Goliath cabinets they may be an inch or two deeper than the earlier versions.
 
  • Like
Reactions: PawleeP
#109
baxter_x said:
Isn't the CA1059 a good replacement for the SWR Goliath cabs?

I based my answers on this earlier statement in the previous page:


Totally! It took me about 10 years to finally find a way to stop destroying my speaker with my big low end. My Broughton HPF solved all my problems. Whish I would have used such device earlier!
Click to expand...
Nice info ya'llz. Doesn't the crossover network have a LPF for the woofers on the goliath III's with the silver horn tweeter?
 
#112
PawleeP said:
Won't changing the 8 ohm speakers to 16 ohm negatively affect the parameters of the crossover?
Click to expand...

No, I’m about 95% sure there’s no low pass filter on the LF drivers.

PawleeP said:
Nice info ya'llz. Doesn't the crossover network have a LPF for the woofers on the goliath III's with the silver horn tweeter?
Click to expand...

No, I don’t think so. I will look to see if I have any docs on this.
 
#116
As an eBay Associate, TalkBass may earn a commission from qualifying purchases.
  • Like
Reactions: Sanj
#117
agedhorse said:
That’s a typical “the parts may fit and make noise” kit, but it’s not anything like the factory parts. The voice coil in the picture has nothing to do with that driver either.
Click to expand...
thank you.

I am currently in the process of acquiring a Goliath III with one blown speaker. I wonder if it has PAS speakers or Eminence. Something I can only see once I have picked it up. Then I will weigh my options. Maybe I will buy 4 new speakers. Maybe I will buy a 2x10 so I can grab one. Have one as backup and replace the 2x10 with two new speakers. We'll see.
 
  • Like
Reactions: agedhorse
#120
Muziekschuur said:
Since modern speakers contain more rare earth metals a newer set of 4 10 inches will likely improve this 4x10. I allso bought a son of bertha cab and a Hartke 2000 amp. This saturday I hope to pick it up.
Click to expand...
Maybe, maybe not. It depends entirely on the drivers and how well they match the cabinet. It's just as likely that it will be no improvement or even a backwards step and it has nothing to do with "rare earth metals" either.
 

Latest posts

Top Bottom
Back