Yes, just found the Celestion TFX line also have a pre designed crossover for each of them, from 5" , 6,5" to 15" ... If anyone with experience would optimize the crossover for the 5 inch or 6,5 inch it would be awesome!!
Attached is the Vituix file for the Celestion desgined crossover for the TFX0615 properly traced.
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Awesome! Thanks
I've tried to replicate the XO in Vituixcad to no avail... this is for the TFX0615 or for the TFX0617?
Cheers
This was done about 4 or 5 years ago. I believe it was the TFX0615, but don't have them here to verify.
The raw driver measurements shown on my spl plot seem to correspond fairly well with the TFX0615.
Note that L8 is 75 uH (.075 mH). LspCad automagically changes units like that sometimes and catches me.
Worth a check. Hope that helps.
Dave
The raw driver measurements shown on my spl plot seem to correspond fairly well with the TFX0615.
Note that L8 is 75 uH (.075 mH). LspCad automagically changes units like that sometimes and catches me.
Worth a check. Hope that helps.
Dave
Actually that's a TFX0617 with compression driver, not the TFX 0615 with dome tweeter.
Well... for HT it might be better a CD, better dynamics.
Yes, you are correct. My project used the FTX0617 (not a TFX0615). I was able to find my sales receipt from 2018.
My apologies to all.
Too many projects, never enough time. FWIW, the project using the FTX0617 did turn out well.
Also, another passive Coax design, this made by speaker designer Scott Hinson using a 5" B&C unit worth USD$200!
Hello,I am considering to build my first coaxial speaker.
SB16PFCR25-4 COAX 6" or Seas loki mk3 kit.
Which is recommended?
I usually listen with low volume.
SB16PFCR25-4 COAX 6" or Seas loki mk3 kit.
Which is recommended?
I usually listen with low volume.
to my ears the sb16-coax sounds better overall, it is more sensitive and have more bass output then the seas t18-coax. but, the tweeter in the sb16-coax is not as good as the seas tweeter, the tweeter in sb16-coax has a poorly frequency response on axis and barely meets the sensitivity of the woofer output, sb acoustics should consider a stronger magnet on the tweeter and clean up the area where the tweeter physically meets the woofer cone
Thank you Celef.
I have SBA satori and sounding very nice.
SB coax price is very cheap and
What is dimension of your box?
I have SBA satori and sounding very nice.
SB coax price is very cheap and
What is dimension of your box?
I recently did a job using the SB12 coax driver. My experience was:
I don't know what one of the earlier responders had seen to lead to comments about car speakers (im not sure of what physical adpect would suggedt that) and quality.
My observations were:
In short there is nothing to indicate shoddy QA or tooling.
I lashed up the recommended crossover, and kind of wish i hadn't. It works a treat, in the crossover region there is nil evidence of the crossover. There was no point in throwing that design in the bin and srarting afresh.
Out of a sense of principal i boosted the tweeter 1dB. The impedance of the system is i guess 4 ohms. It gets down there in the midrange. The impedance does have a substantial peak at crossover, but that is obviously not an issue.
From about 200hz and upwards the response is flat within 2 - 3dB.
On axis you get that dip at about 12kHz. As you go off axis that fills in. The response at 15 degees is quite good with top end rolloff toward 20k.
The sound is much as you would expect for a well behaved 4 inch driver and tweeter.
Walking around the speaker presents a fairly uniform character. To this end i suggest the coaxial aspect is paying off.
Things i dont love are the current higher fs. These are also small drivers and will always carry the limitations this imposes.
I think fullrange is ok for near field monitors, but a user would need to have modest expectations if using these in a room fullrange.
- the measured frequency response of both the bass and tweeter were very close to the published data.
- the on axis dip in tweeter response is real, on avis but ***** up in frequency and by 10 to 15 degrees is no longer evident.
- in the detail, using unsmoothed measurements, the redponse is very well behaved and shows no nasty peaks or dips "smoothed out" in the datasheet.
- the bass driver fs is higher than spec but these drivers have been stuck in a windowsill for 2 years so i suspect that this will drop with time.
I don't know what one of the earlier responders had seen to lead to comments about car speakers (im not sure of what physical adpect would suggedt that) and quality.
My observations were:
- the chassis is as stated fibre reinforced pladtic. The injection moulding is good quality with no evidence of unintended mould lines, the surface finish is good enough to appear painted, but it is not.
- the cone is similar in appearance to their sartori line cones, which i have used in the past. I doubt that it is actually the same.
- rubber surround, gold plated connectors.
- glue jojnts are all clean and even.
In short there is nothing to indicate shoddy QA or tooling.
I lashed up the recommended crossover, and kind of wish i hadn't. It works a treat, in the crossover region there is nil evidence of the crossover. There was no point in throwing that design in the bin and srarting afresh.
Out of a sense of principal i boosted the tweeter 1dB. The impedance of the system is i guess 4 ohms. It gets down there in the midrange. The impedance does have a substantial peak at crossover, but that is obviously not an issue.
From about 200hz and upwards the response is flat within 2 - 3dB.
On axis you get that dip at about 12kHz. As you go off axis that fills in. The response at 15 degees is quite good with top end rolloff toward 20k.
The sound is much as you would expect for a well behaved 4 inch driver and tweeter.
Walking around the speaker presents a fairly uniform character. To this end i suggest the coaxial aspect is paying off.
Things i dont love are the current higher fs. These are also small drivers and will always carry the limitations this imposes.
I think fullrange is ok for near field monitors, but a user would need to have modest expectations if using these in a room fullrange.