Pretty impressive, there, xrk971.
If you wanted to go for complete transient perfect, the easy way would be to get a miniDSP miniSPARC or OpenDRC and do FIR filter correction somewhere in the chain. Actually pretty easy to do using RePhase. I have my Synergies pretty much linear phase with the (badly complicated) crossovers, but still use an OpenDRC to clean it up further... could have saved myself the trouble of doing that gawdawful crossover.
If you wanted to go for complete transient perfect, the easy way would be to get a miniDSP miniSPARC or OpenDRC and do FIR filter correction somewhere in the chain. Actually pretty easy to do using RePhase. I have my Synergies pretty much linear phase with the (badly complicated) crossovers, but still use an OpenDRC to clean it up further... could have saved myself the trouble of doing that gawdawful crossover.
Bwaslo,
Thanks for the kind words!
That gawdawful was your crowning achievement, and IMO, is the epitome of multiway XO design at its very best. I guess you sweated blood making it.
They should make T-shirts with that XO design:
Funny you brought up RePhase and openDRC, and miniSHARC. Byrtt and Wesayso have been trying to get me to try it for like months and I may just be over the edge to go for it. I was thinking of getting miniSHARC as I like stand alone boxes. But it may be real cheap and easy to use my UCA202 an Jriver. Hmm.... just need to take time and dig in and learn. I did manage to teach myself to use PCD and Xsim over last month though so making progress 🙂
Thanks for the kind words!
That gawdawful was your crowning achievement, and IMO, is the epitome of multiway XO design at its very best. I guess you sweated blood making it.
They should make T-shirts with that XO design:
Funny you brought up RePhase and openDRC, and miniSHARC. Byrtt and Wesayso have been trying to get me to try it for like months and I may just be over the edge to go for it. I was thinking of getting miniSHARC as I like stand alone boxes. But it may be real cheap and easy to use my UCA202 an Jriver. Hmm.... just need to take time and dig in and learn. I did manage to teach myself to use PCD and Xsim over last month though so making progress 🙂
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Here are the measurements for the 10F in the Trynergy at 0.5m. There are a couple of sharp dips at 4k and 7.5k that are due to some rough edges I have at the throat. Will need to work on them but sharp dips are not quite that noticeable. This is at 1.64v into the 8ohm driver or about 0.34 watts and I am getting around 96 to 98dB at 0.5m.
Here is the acoustic XO plot:
Here is the Phase:
Here is the Harmonic Distortion, note that the distortion is predominantly 2nd order and 3rd order and higher is vanishingly small. Cursor is at 1kHz:
Here is Impulse Response and Step Response - there is some ringing due to the throat discontinuity artifact, and the SR does not go far since this is a 100Hz bottom end only:
Here is the RTA looking at the HD with a 1kHz 1.64 volt excitation, I don't think I have ever seen a speaker RTA plot that looks this clean - mostly 2nd harmonic and non-existent higher orders. Some folks over in Multi-Way Forum were in disbelief that the 5MR450NDY in a tractrix had such low HD, but it was not even as low as this. This is probably the main reason why this speaker sounds so good on vocals. It is about as pure of a sound as you can get. The fundamental is about 98.6dB with a little over 300 milliwatts power driving it. The cone can't be moving much (sims predict in the tens of micro-meters). that's 0.19% THD at equivalent 92.6dB at 1m!
Wow simply fantastic clean distortion plots investigated running 10F, if know you get your 3D printer fired up and create a perfect throat entrance plus phase plug that smooth out most of frq response weak stuff, think you then invented something unique.
Thought was a free world shame on them bad guys : )
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Now THAT is worthy of a T-Shirt print! 😱
I have somewhere trouble with measuring, the headphone do now also dips quite heavy, I did hear also echo. think about RF radiation, so get complain again by house owner who rent it to me.
A headphone does normally quite oke.
Older measurements did oke, strange thing I have to solving before going do working further on horn, horn sounds well though.
regards
A headphone does normally quite oke.
Older measurements did oke, strange thing I have to solving before going do working further on horn, horn sounds well though.
regards
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Can I pre-order one of those t-shirts!? My girlfriend will love it... I may even get one for her lol
Anywho, I am using 6 x DIY Chip Amplifier Kits, PCB's, Components and Information..
But I only have a few CL60's for soft start with a miniDC and a relay to turn on the amps. I still have to turn on the MiniDSP then the amps seperatly. Perhaps I should get off my *** and install a proper softstart + speaker protection board? Any good suggestions. A complete kit would be better for my skill level.
The only problem is I have 6 x lm4780's + 3 x Peters Reg boards + 3 x 400VA taroidals in one chassis so there's not much room left. Yes she is a heavy beast.
Trynergy plans printed and checked. Hope to start cutting wood today.
Anywho, I am using 6 x DIY Chip Amplifier Kits, PCB's, Components and Information..
But I only have a few CL60's for soft start with a miniDC and a relay to turn on the amps. I still have to turn on the MiniDSP then the amps seperatly. Perhaps I should get off my *** and install a proper softstart + speaker protection board? Any good suggestions. A complete kit would be better for my skill level.
The only problem is I have 6 x lm4780's + 3 x Peters Reg boards + 3 x 400VA taroidals in one chassis so there's not much room left. Yes she is a heavy beast.
Trynergy plans printed and checked. Hope to start cutting wood today.
Doesn't seems fair people should have a home and live in such enviroment really feel sorry for you.
That said a point that could make things non-consistent is you seems run new free Win10 and that system is in so young a state where they throw out updates continueally that could change your experience, therefor would have more peace in mind had you run Win7 that we know would be consistent from measurement to measurement communicating/controlling hardware and software.
Wow... She loves the t-shirt! Perhaps we could petition the mods to have a series of them in the store.. Hint hint. For girls and guys!
My vote would be for starters, cosine, f5 lol
Should we start a new thread with a poll?
My vote would be for starters, cosine, f5 lol
Should we start a new thread with a poll?
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There are also a ton of online stores where you upload your image, pick the base shirt and order the printed t shirt. I have used inkjet iron on transfers successfully too.
It was a joke but seeing it on a model, it looks cool actually.
Regarding turn on thump. I bought a couple of LM3886 amps from Aliexpress. They came with an OMRON self protect relay built in. The amp was $40 and sound quite decent. Turn on anti thump is pretty basic. Just use an RC circuit to set a time constant that trips a relay at sufficient voltage. Need DPST relay controlled by 12v. Use 7812 regulator and RC circuit to require 2 to 5 second charge up.
It was a joke but seeing it on a model, it looks cool actually.
Regarding turn on thump. I bought a couple of LM3886 amps from Aliexpress. They came with an OMRON self protect relay built in. The amp was $40 and sound quite decent. Turn on anti thump is pretty basic. Just use an RC circuit to set a time constant that trips a relay at sufficient voltage. Need DPST relay controlled by 12v. Use 7812 regulator and RC circuit to require 2 to 5 second charge up.
Seems miniDSP have a soft start PCB to correct turn on order https://www.minidsp.com/products/accessories/minidc-isolator.
Also here the control pot X talked about https://www.minidsp.com/products/accessories/misc-accessories/volume-control-pot-detail.
Also here the control pot X talked about https://www.minidsp.com/products/accessories/misc-accessories/volume-control-pot-detail.
Thanks for the suggestions guys. He aware that I fried the a7.3 with the miniDC already in circuit, activating a 12v relay to turn the amps on. Amp thump was not a problem before I put the dsp in circuit. Hmmm
Maybe I need to look at my amp again. Even with the vol pot hard left and the miniDC delaying the relay turn on, my test driver gets a decent thump. I think my lm4780 run on 22v trannies, does anybody know of a good soft start or speaker protection board?
Sorry to go ot, back to the horns...
Sorry to go ot, back to the horns...
You could just put series caps on the small drivers to keep the big peak out of them. The woofers should be able to handle that size peak, otherwise why have an amp that big?
Theoretically, your speakers should be able to handle a <22V transient provided it doesn't have energy below their lower frequency handling limit. Work the highpass effect of the capacitor into the crossover design (you'll need at least a pole of highpass anyway). I've done it with a compression driver, put a 35uF film cap in series, survived the turn-on of a miniDSP and some 100W SURE T-Amps.
Theoretically, your speakers should be able to handle a <22V transient provided it doesn't have energy below their lower frequency handling limit. Work the highpass effect of the capacitor into the crossover design (you'll need at least a pole of highpass anyway). I've done it with a compression driver, put a 35uF film cap in series, survived the turn-on of a miniDSP and some 100W SURE T-Amps.
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^ If you're pretty confident your amp itself is well-behaved, you can do it PLL on the input side of the amp, too. Smaller/cheaper cap. 🙂
Thanks gents.. I won't stray too far off topic but I am thinking the thump is from the amp so will try a series cap before the driver as suggested. The woofers Can and have handled it.
Cheers
Dean
Cheers
Dean
I have been listening a lot more with the ScanSpeak 10F driver and I have to say it sounds a lot better than the 3FE22. I think the well damped fiberglass cone and stronger motor seems to make a difference and the motor is very low distortion. I have not tested it yet, but I suspect that the Vifa TG9FD10-8 may also work well despite being high Q since the cone is fiberglass and well damped. I am getting quite a ring mode at 13kHz in the 3FE22. It adds a little tizz to percussions. Not overtly so but there once you compare with the 10F.
A hybride is good sounding. like this who is mine build test (yes it is 8 years old aready and has survive different wars.) I have put a time ago this sound on youtube from the amp output in very low volume to input audio card.
this has some distortion (to loud for mike) newest hybrid amp with only platefollowers, not feedback however also not local except mosfets output stage who is source follower...
https://www.youtube.com/watch?v=mAYXzegWnn4
this what I use in trynergy, has local feedback in mosfet drivers. and mosfet itselfs. this sample is from output amp not through a mike and stereo.
https://www.youtube.com/watch?v=aFY4jhnNmXw
And now ontopic again and further with that mike making it RF tight.
this has some distortion (to loud for mike) newest hybrid amp with only platefollowers, not feedback however also not local except mosfets output stage who is source follower...
https://www.youtube.com/watch?v=mAYXzegWnn4
this what I use in trynergy, has local feedback in mosfet drivers. and mosfet itselfs. this sample is from output amp not through a mike and stereo.
https://www.youtube.com/watch?v=aFY4jhnNmXw
And now ontopic again and further with that mike making it RF tight.
Kees,
You make some really nice sounding hybrid amps. Do you have schematics for the second video - sounds wonderful. What speaker is that?
You make some really nice sounding hybrid amps. Do you have schematics for the second video - sounds wonderful. What speaker is that?