WhiteDragon's GRS 12PT+ GRS 6PT + Dayton tweeter "L100" style design would certainly be low cost driver-wise (~$125 for the 4-GRS drivers on sale and shipped in the US) and the large back chamber requirement for 6PT good to use in a monkey coffin form-factor. 6PT is reported to have very low distortion
I did not do the project as would have to have two cabinets made then sent - I did use 12PT in a little tapped pipe - it appears very well made
maybe someone could make a less expensive xover
I did not do the project as would have to have two cabinets made then sent - I did use 12PT in a little tapped pipe - it appears very well made
maybe someone could make a less expensive xover
Ah, ok, I get your point. However, I am not concerned with the linear effects of Rms / Qms or acoustic impedance. All I am saying is that for large Rms (low Qms) the mechanical losses within the driver are large. Since these loss processes are very non-linear, they will introduce unwanted non-linear distortion. Higher Rms means more of these unwanted distortions.
Yeah, that's excellent, & the driver looks the part. 35 liter size gives a lot of flexibility. It must be a new model?
It is on the list of MANY peerless drivers expected to be back in stock at Parts Express in May. Not sure if it is/would be available in Europe.
That might be changing... the latest parts express online catalog is showing pricing for 1-4 units. We shall see what happens once all of these out-of-stock drivers come back into stock, hopefully in May...
IIRC, some Peerless drivers are also showing up in EU e-tailers -- marked as arriving soon. Makes sense. Can't see Peerless not selling in EU retail if they are going through PE.
Maybe it's only the store I saw on line that was discontinuing it. I'd show there name, but I don't want to advertise for them.
I may order one, but I'm impatient. I want something now. However, this would also make a nice small sub after I try it in a 3-way.
I may order one, but I'm impatient. I want something now. However, this would also make a nice small sub after I try it in a 3-way.
To sum up a possible design.
Mid fourties f3 if ported
High fifties f3 and low Q if sealed
Much smaller box is also an option for sealed.
82dB sensitivity ( Typical of many 6.5" 2-ways. )
Strong output with 65w. Nowhere near x-max at that power.
35L volume for woofer
60L volume total
$20 mid
$40 tweeter
Approximately $660 for a pair. (Drivers, and x-over. )
I guess my question would be... What would we be offering that is an advantage over a Tarkus?
If sealed, it's much smaller. Ported as above is also smaller. Low Q bass is an option. Different look.
There's no way to compare how it might sound. I might cobble together a prototype, but only one. By the time the woofer is available, we may not even be considering this.
Mid fourties f3 if ported
High fifties f3 and low Q if sealed
Much smaller box is also an option for sealed.
82dB sensitivity ( Typical of many 6.5" 2-ways. )
Strong output with 65w. Nowhere near x-max at that power.
35L volume for woofer
60L volume total
$20 mid
$40 tweeter
Approximately $660 for a pair. (Drivers, and x-over. )
I guess my question would be... What would we be offering that is an advantage over a Tarkus?
If sealed, it's much smaller. Ported as above is also smaller. Low Q bass is an option. Different look.
There's no way to compare how it might sound. I might cobble together a prototype, but only one. By the time the woofer is available, we may not even be considering this.
Tymphany, the company who owns Peerless only sells in big quantities, also to shops. That is what a shop owner told me when i'm asked him why he did not sell Peerless (or other Tymphany drivers). It's just not profitable for them to have to buy 100 copies on one driver and try to sell them. They buy 10 or 20 at the time and Tymphany does not do that. TLHP (toutlehautparleur.com) in France sells enough of them (as they also sell B2B) to make that work, and i gues PE also does the same so they can make it work. But many smaller shops can't, or only carry some very popular drivers in the range.
Some other OEM brands like Kartesian, Audax or PHL (all French companies) do the same and only sell through THPL to (diy) consumers often. The diy market is a small niche for them and they don't want to focus on that, they focus on big OEM contracts, that are often custom designs. The only reason why the deliver batches to shops like TLHP or PE is because that is advertisment for them. If a brand is known in the diy world, it's easier to get big OEM contracts. Some big OEM companies like Seas, Scanspeak or Sinar Baja Electric (SB Acoustics/SB Audience) do more effort for the diy world, but it's also not where the get the majority of their busssiness.
Some other OEM brands like Kartesian, Audax or PHL (all French companies) do the same and only sell through THPL to (diy) consumers often. The diy market is a small niche for them and they don't want to focus on that, they focus on big OEM contracts, that are often custom designs. The only reason why the deliver batches to shops like TLHP or PE is because that is advertisment for them. If a brand is known in the diy world, it's easier to get big OEM contracts. Some big OEM companies like Seas, Scanspeak or Sinar Baja Electric (SB Acoustics/SB Audience) do more effort for the diy world, but it's also not where the get the majority of their busssiness.
Too high. Need to get F3 below 50Hz unless it's a powerful driver with high XmaX and DSP is available. Not good if passive, and that is the end goal.
My room has boost around 50hz. My sealed 15" sub has an f3 around 53hz. I feel LFE in movies. No EQ, just a low-pass from the AVR.
I think I could make a passive x-over for it. It does look challenging. That's one reason I wish I could buy it today. It wouldn't take long to know.
If anyone here can trace the frd, and zma files, we could find out if it's practical.
I think I could make a passive x-over for it. It does look challenging. That's one reason I wish I could buy it today. It wouldn't take long to know.
If anyone here can trace the frd, and zma files, we could find out if it's practical.
https://www.parts-express.com/pedocs/specs/264-1654--tympany-sdf-250f75pr01-06-spec-sheet.pdf
I have a tweeter and mid in mind. Many options. I have the H26 I mentioned in this thread, and the small 5.25" Peerless. The 5.25" Peerless has been collecting dust for years.
If I had the drivers, I could stack the mid, and tweeter in a box on top of a second 1 cu-ft box with the woofer, and make a x-over / measure distortion / etc. After I'm done, the woofer most likely will be used as a sub.
Mostly, I like making x-overs. By the way, did you try that sim? I'm anxious to see what happened with the real measurements.
I have a tweeter and mid in mind. Many options. I have the H26 I mentioned in this thread, and the small 5.25" Peerless. The 5.25" Peerless has been collecting dust for years.
If I had the drivers, I could stack the mid, and tweeter in a box on top of a second 1 cu-ft box with the woofer, and make a x-over / measure distortion / etc. After I'm done, the woofer most likely will be used as a sub.
Mostly, I like making x-overs. By the way, did you try that sim? I'm anxious to see what happened with the real measurements.
Last edited:
Is this enough bass with some boost? Typo on the jpeg. That's at 14mm excursion. X-max is 15.3mm. Rated power is 300w, but you get the idea. It's versatile. And this sim is in a 1 cu-ft box.
Attachments
Last edited:
I hope it is ok to post this kind of question into this thread.
I am trying to decide between 2 speakers from Troels. To me as a novice who never built a speaker before, they seem very similar and it is common knowledge that the man himself does not answer any speaker choice questions.
The 2 speakers in question are the following two:
http://www.troelsgravesen.dk/FUSION-22.htm
http://www.troelsgravesen.dk/Faital-12-430.htm
Both of them are marketed by Troels as alternatives to the Faital 3WC-12 with deeper bass, and that is exactly what I am looking for.
But then, I have no clue based on what criteria I should make my final choice.
To me as a noob the specs seem very similar. But then I may be missing some critical difference maybe.
If it matters:
I am trying to decide between 2 speakers from Troels. To me as a novice who never built a speaker before, they seem very similar and it is common knowledge that the man himself does not answer any speaker choice questions.
The 2 speakers in question are the following two:
http://www.troelsgravesen.dk/FUSION-22.htm
http://www.troelsgravesen.dk/Faital-12-430.htm
Both of them are marketed by Troels as alternatives to the Faital 3WC-12 with deeper bass, and that is exactly what I am looking for.
But then, I have no clue based on what criteria I should make my final choice.
To me as a noob the specs seem very similar. But then I may be missing some critical difference maybe.
If it matters:
- Large living room (50m2)
- Power Amp: Hegel H390
- Primary genre: electronic music
I went through the thread, but rather quickly. Let's put together a list of potential 12" woofers that perform well in approximately 2.0-2.25 cf (56-65L). Close to 50Hz or lower F3 sealed or 40Hz or lower vented. With midrange chamber and bracing, this would allow a Classic 3-way in a cabinet approximately the size of the JBL L100 mentioned earlier.
I've left off some of the least expensive drivers mentioned, as I subjectively think that if the speaker designed here can't exceed the quality of the Peerless SLS 830668 10" used in the Tarkus, then we should just recommend the Tarkus and be done.
We can start eliminating drivers once we have a good list of potential drivers, I've deliberately included some that have already been discussed and we will likely exclude for reasons already provided. If you think there is a good candidate that I have left off, please post the full list with your recommendation added to the bottom.
I've left off some of the least expensive drivers mentioned, as I subjectively think that if the speaker designed here can't exceed the quality of the Peerless SLS 830668 10" used in the Tarkus, then we should just recommend the Tarkus and be done.
We can start eliminating drivers once we have a good list of potential drivers, I've deliberately included some that have already been discussed and we will likely exclude for reasons already provided. If you think there is a good candidate that I have left off, please post the full list with your recommendation added to the bottom.
- Faital 10FE330 is 10 inches. Is there a 12" FaitalPRO woofer that meets the targets?
- Peerless SLS 830669
- Peerless XXLS-P830845 Nomex cone
- LaVoce SSF122.50L
- SB Acoustics SB34NRX75-6
- Beyma 12br70