Hi Everyone , Does anyone have any recent experience with Newform Research Ribbon Tweeters - the R30 or R45 ??
- I am wanting to build a state of the art speaker, using 4 of the new Purifi Mid- Woofers. , but the Top of the line Tweeters, the BlieSMa Beryllium Dome , the big RAAL Tweeter , a Stacked pair of the big AMT Tweeters in a waveguide , the Newform Research R30 or R45 Ribbons ..... etc, are all about - $ 750 to - $ 1,400 ...
- Due to health issues I have insufficient funds - most likely I will only get one chance to try one of these tweeters .... It took 12 years to save up enough to build these speakers -- LOL - 🙂
- The Newform Research R30 or the R45 Ribbons look very interesting, the information on the website seems to show that they have some unique things going for them - but I can't find any recent reviews of the Ribbons , so I need some advice and information from anyone with experience with them.
thank you,
Best regards, Dean
- I am wanting to build a state of the art speaker, using 4 of the new Purifi Mid- Woofers. , but the Top of the line Tweeters, the BlieSMa Beryllium Dome , the big RAAL Tweeter , a Stacked pair of the big AMT Tweeters in a waveguide , the Newform Research R30 or R45 Ribbons ..... etc, are all about - $ 750 to - $ 1,400 ...
- Due to health issues I have insufficient funds - most likely I will only get one chance to try one of these tweeters .... It took 12 years to save up enough to build these speakers -- LOL - 🙂
- The Newform Research R30 or the R45 Ribbons look very interesting, the information on the website seems to show that they have some unique things going for them - but I can't find any recent reviews of the Ribbons , so I need some advice and information from anyone with experience with them.
thank you,
Best regards, Dean
I had a look at the website of Newform and don't see even a basic on axis frequency response plot, I wouldn't spends lots of money without decent data.
BlieSMa Beryllium Dome has low harmonic distortion, no breakup modes in the audiable range, capable of 2kHz crossover, high sensitivity:
Test Bench: A New Beryllium Tweeter from BlieSMa | audioXpress
What struck me though was that the dispersion of a large ribbon differs substantially from a dome tweeter so if your considering both then perhaps you need to work out what characteristics you want from your tweeter before picking one?
If I where looking for the ultimate tweeter I would choose something like this:
Test Bench: Eighteen Sound ND3ST 1.4” Compression Driver | audioXpress
but perhaps we have differing prioritys?
BlieSMa Beryllium Dome has low harmonic distortion, no breakup modes in the audiable range, capable of 2kHz crossover, high sensitivity:
Test Bench: A New Beryllium Tweeter from BlieSMa | audioXpress
What struck me though was that the dispersion of a large ribbon differs substantially from a dome tweeter so if your considering both then perhaps you need to work out what characteristics you want from your tweeter before picking one?
If I where looking for the ultimate tweeter I would choose something like this:
Test Bench: Eighteen Sound ND3ST 1.4” Compression Driver | audioXpress
but perhaps we have differing prioritys?
Hi Kipman725 , thanks for looking at the web site for me.
- I understand that the tweeter it should be a design choice.... but I'm too much of a newbie when it comes to speaker design to know what characteristics I should be looking for in the tweeter . . . other than great sound - 🙂
I hoped to find someone who had Heard their tweeters.
- I thought of compression drivers.... but the Purifi drivers are only 89db so it seemed to me that I would have to throw away about 23 db. and didn't seem like a good choice....... But I'm not sure?
What is the best compression driver tweeter that you have heard?
Thank you for your help, Dean
- I understand that the tweeter it should be a design choice.... but I'm too much of a newbie when it comes to speaker design to know what characteristics I should be looking for in the tweeter . . . other than great sound - 🙂
I hoped to find someone who had Heard their tweeters.
- I thought of compression drivers.... but the Purifi drivers are only 89db so it seemed to me that I would have to throw away about 23 db. and didn't seem like a good choice....... But I'm not sure?
What is the best compression driver tweeter that you have heard?
Thank you for your help, Dean
Hi Dean,
this might be not that helpful, as I have just a faint memory of a Newform test in a german magazine of a few decades ago... but it hasn´t turned out too well.
Speaker development since then has not stood still, and especially the BliesMa tweeters have gained a high reputation in a short time (have a look at Troel´s pages and constructions, and the Voicecoil publication as well), so making a WWMTM with your 4 Purifies should be a viable option.
But than, as you´ve described yourself as a newbie, I would strongly suggest to built a proven high-quality suggestion instead of starting a development from scratch, if you´re not prepared to:
- spent a considerably amount of money and time and efforts for tests and errors.
- spent a considerably amount of money and time and efforts for doing measurements.
- spent a considerably amount of money and time and efforts for crossover design, and accepting to end with a huge pile of expensive filter elements once your crossover is fully finished.
Please understand that I don´t want to disencourage you, but building a SOTA speaker is very long and expensive task...
All the best
Mattes
this might be not that helpful, as I have just a faint memory of a Newform test in a german magazine of a few decades ago... but it hasn´t turned out too well.
Speaker development since then has not stood still, and especially the BliesMa tweeters have gained a high reputation in a short time (have a look at Troel´s pages and constructions, and the Voicecoil publication as well), so making a WWMTM with your 4 Purifies should be a viable option.
But than, as you´ve described yourself as a newbie, I would strongly suggest to built a proven high-quality suggestion instead of starting a development from scratch, if you´re not prepared to:
- spent a considerably amount of money and time and efforts for tests and errors.
- spent a considerably amount of money and time and efforts for doing measurements.
- spent a considerably amount of money and time and efforts for crossover design, and accepting to end with a huge pile of expensive filter elements once your crossover is fully finished.
Please understand that I don´t want to disencourage you, but building a SOTA speaker is very long and expensive task...
All the best
Mattes
Best compression driver is a difficult question without an answer, it depends a lot on application and what characteristics are important for that application as the design of a compression driver is a case of engineering compromise. What then makes them harder to evaluate is that the horn used has a greater influence than the driver on the audible characteristics and that horns vary in compatibility for different drivers. For example older design drivers like TAD have the initial horn expansion inside the driver and if this is not matched to the start of the horn then there is a discontinuity which will cause the cumulative spectral decay to appear worse due to reflections. Certainly some are better than others but to say one driver is the best is not possible.
I just use BM-D446 on (modified) PH-4220 horn, pretty cheap 1.75" ti dome with polymer? surround sounds great perhaps I have heard better sounding treble from D&B speakers (unsure of driver probably B&C) and from JBL studio monitors using slant plate lenses and slot tweeters, but its hard to tell unless your able to make a direct comparison. On the subject you might want to check out the recordings here:
High Frequency Compression Driver Evaluation
"Considering the disparity between size, weight, diaphragm material, and design, the constraints and compromises inherent in each approach, once equalized for flat on-axis response there was surprisingly little difference in the end results of listening tests." - may be a point to take into account before spending big money on a tweeter.
I just use BM-D446 on (modified) PH-4220 horn, pretty cheap 1.75" ti dome with polymer? surround sounds great perhaps I have heard better sounding treble from D&B speakers (unsure of driver probably B&C) and from JBL studio monitors using slant plate lenses and slot tweeters, but its hard to tell unless your able to make a direct comparison. On the subject you might want to check out the recordings here:
High Frequency Compression Driver Evaluation
"Considering the disparity between size, weight, diaphragm material, and design, the constraints and compromises inherent in each approach, once equalized for flat on-axis response there was surprisingly little difference in the end results of listening tests." - may be a point to take into account before spending big money on a tweeter.
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You could build a 30inch ribbon for about the same price by buying six of these.
Fountek NeoCd2.0M-blk 5" Ribbon Tweeter - Rectangular Flange - Black
And, some may argue you may get better results?
Regards,
Dan 🙄
Fountek NeoCd2.0M-blk 5" Ribbon Tweeter - Rectangular Flange - Black
And, some may argue you may get better results?
Regards,
Dan 🙄
You could build a 30inch ribbon for about the same price by buying six of these.
Fountek NeoCd2.0M-blk 5" Ribbon Tweeter - Rectangular Flange - Black
And, some may argue you may get better results?
Regards,
Dan 🙄
Fountek NeoCd2.0M-blk 5" Ribbon Tweeter - Rectangular Flange - Black
And, some may argue you may get better results?
Regards,
Dan 🙄
- Thank you Mattes, yes I understand about the work and effort involved , I need to invest in some measurement equipment, I'll have to ask about the right equipment needed for the measuring and Testing.... and I may end up choosing a proven design , well see.
- Hi kipman725, thanks for the compression driver info, I'll check it out.
- Hi dantwomey, thanks for the idea....... and I had considered a similar Idea - some guys are stacking two AMT drivers and said they had good results..... so I asked a speaker designer about the idea.....
But he said because they are separate drivers that there will be lots of Comb Filtering unless I use them in a full line array - which he said would be like 10 + drivers .... basically a lot of them - LOL , oh well.........
- That's a situation I don't understand... the diy guys say two of them stacked sounds great, the professional speaker designer says no there will be real problems?
- Hi kipman725, thanks for the compression driver info, I'll check it out.
- Hi dantwomey, thanks for the idea....... and I had considered a similar Idea - some guys are stacking two AMT drivers and said they had good results..... so I asked a speaker designer about the idea.....
But he said because they are separate drivers that there will be lots of Comb Filtering unless I use them in a full line array - which he said would be like 10 + drivers .... basically a lot of them - LOL , oh well.........
- That's a situation I don't understand... the diy guys say two of them stacked sounds great, the professional speaker designer says no there will be real problems?