Here are some initial measurements in the Nautaloss and trapezoidal baffle at 0.5m, 0 deg, 0.71volts, no miniDSP - straight to amp.
Freq response as compared to TC9FD - the TG9FD appears to be smoother than the TC9FD, but with a tad less sensitivity:
Harmonic Distortion is actually very low, not quite as good as the 10F/8424 but a very respectable performer:
Impulse Response - very clean, almost similar to the 10F/8424:
Minimum Phasen - phase variation is less than the TC9FD, not quite as good as 10F/8424:
CSD:
Given the similar cone material between the TG9FD and the 10F/8424, this driver appears to be a low cost, less sensitive alternative. A very nice performing driver. Sounds very good too but have not had too much time to listen.
I wonder if break-in might loosen up cone and change the Qts a smaller value.
Freq response as compared to TC9FD - the TG9FD appears to be smoother than the TC9FD, but with a tad less sensitivity:
Harmonic Distortion is actually very low, not quite as good as the 10F/8424 but a very respectable performer:
Impulse Response - very clean, almost similar to the 10F/8424:
Minimum Phasen - phase variation is less than the TC9FD, not quite as good as 10F/8424:
CSD:
Given the similar cone material between the TG9FD and the 10F/8424, this driver appears to be a low cost, less sensitive alternative. A very nice performing driver. Sounds very good too but have not had too much time to listen.
I wonder if break-in might loosen up cone and change the Qts a smaller value.
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It seems that increases elasticity of rubber surround on TC9 after a long brak-in.
Just thinking.
Just thinking.
xrk971,
Again nice data to think about when to retire for the night.
For us looking to find the most accurate full ranger to cover most of the audio band octaves making a FAST or 2 way system your shared data is real gold, this is still true if one is for driver raw performance, EQ analog/digital and other DSP tricks, great thanks.
Again nice data to think about when to retire for the night.
For us looking to find the most accurate full ranger to cover most of the audio band octaves making a FAST or 2 way system your shared data is real gold, this is still true if one is for driver raw performance, EQ analog/digital and other DSP tricks, great thanks.
Byrtt,
I am almost coming to the conclusion that the TG9FD10-8 may be the hidden gem here as it is smoother than the TC9FD. For double the price - it may be well worth it given how close it is to the 10F/8424. You will have about 1.5dB less sensitivity though.
I am going to listen to it now with various songs to get a better feel.
I am almost coming to the conclusion that the TG9FD10-8 may be the hidden gem here as it is smoother than the TC9FD. For double the price - it may be well worth it given how close it is to the 10F/8424. You will have about 1.5dB less sensitivity though.
I am going to listen to it now with various songs to get a better feel.
Seems my guess wasn't wrong and it's in the middle of the other two as it's price suggests based on measurements. Maybe even closer to the 10F than to the TC9.
In 2011 I almost bought those for my lines. Couldn't bring myself to spend that much extra though. If I remember correctly they were 3x as expensive at the time.
Well, I can always upgrade down the road 😀. Woops, is it even being continued?
http://www.parts-express.com/vifa-tg9fd-10-08-3-1-2-woofer--299-269
In 2011 I almost bought those for my lines. Couldn't bring myself to spend that much extra though. If I remember correctly they were 3x as expensive at the time.
Well, I can always upgrade down the road 😀. Woops, is it even being continued?
http://www.parts-express.com/vifa-tg9fd-10-08-3-1-2-woofer--299-269
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Wesayso,
You were right. The TG9FD10-8 is the poor man's 10F! 🙂 I like the 25 watt rating of the 8ohm glass TG9FD much better than the more common 4ohm one which I believe has a much lower power rating. They almost seem like they are going to be out of production so get them while they last.
You were right. The TG9FD10-8 is the poor man's 10F! 🙂 I like the 25 watt rating of the 8ohm glass TG9FD much better than the more common 4ohm one which I believe has a much lower power rating. They almost seem like they are going to be out of production so get them while they last.
I knew they were the better drivers on paper, but always wondered how much better if equalised to the same curve with FIR. I had found many references that the 4 ohm do not stack up to the 8 ohm, if that is true I don't know.
🙂..... Signs the horizon next month on EBAY 50 used TC9FD will be traded, a month later either TG9FD10-08 or 10F/8424G00 is not more available at webshops.
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Hmm... I wonder if the phasing out of the TG9 hs anything to do with not wanting competition for the flagship 10F which costs 5x?
Hi X,
Thanks a lot for your time and effort on this. I remember 10F was brought up quite some time ago. And now you added some other proof to it.
Regarding driver's designs, I think of this thread, especially this post: http://www.diyaudio.com/forums/multi-way/161299-directivity-dipole-tweeters-4.html#post2422631
I thought at that time that Aleksandar Radisavljević had revealed just too many secrets to the public. 😛
Thanks a lot for your time and effort on this. I remember 10F was brought up quite some time ago. And now you added some other proof to it.
Regarding driver's designs, I think of this thread, especially this post: http://www.diyaudio.com/forums/multi-way/161299-directivity-dipole-tweeters-4.html#post2422631
I thought at that time that Aleksandar Radisavljević had revealed just too many secrets to the public. 😛
X asserted that all but one of his measures closely mirrored the factory data but for the MA CHN70. I scaled all the graphs to do a proper comparison. None of his measures matched factory (X has those graphs). Except for the PRV they were equaly far apart. For completness here is XRK vrs factory for the 10F. Blue is X, factory is black
dave
dave
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The out-of-production Kevlar-cone sibling, the 3.5" 6-ohm Tymphany TPY03W06o has an even stiffer cone and higher power rating of 30W. However, Fs is slightly higher at 123 Hz - minor tradeoff.
I'll be assembling a dual-driver folded Tabaq using the Kevlar-cone Tymphany drivers shortly - will give a subjective opinion on these shortly. The intent behind using dual drivers is to reduce the cone displacement by ~30% per driver and lower distortion even further, other things being equal. As a bonus, the power rating doubles to 60W.
Some comparative measurments of the Tc vs TG9
http://www.diyaudio.com/forums/multi-way/252871-peerless-ne-series-anyone-used-them-2.html
http://www.diyaudio.com/forums/multi-way/252871-peerless-ne-series-anyone-used-them-2.html
X asserted that all but one of his measures closely mirrored the factory data but for the MA CHN70. I scaled all the graphs to do a proper comparison. None of his measures matched factory (X has those graphs). Except for the PRV they were equaly far apart. For completness here is XRK vrs factory for the 10F. Blue is X, factory is black
dave
The 10F was measured at about 10deg off axis as part of the FAST setup, hence the response is lower - approximately where one would expect it to be. You love pointing out how flawed my measurements are - I don't hear anyone else complaining or nit picking. Get over it and stop trolling.
And furthermore, you felt compelled to send me your analyses of what is wrong with my measurements by comparing them with hand scaled Photoshop overlays (prone to errors and large uncertainties) by email to my private address without consent to do so via PM first. That is borderline harassment/stalking. Pretty sure you are abusing your mod privileges there.
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