Seas ER15RLY and Peerless HDS Nomex (830873) are both very good midwoofers and measures well. http://www.zaphaudio.com/5.5test/
(Thank you Zaph for your fantastic page!!!!)
But which one do you prefere??
I want to use one of them in a 2,5 way with active 4th order LR at ~3000k.
Tweeter will probably be Vifa XT19 or maybe Seas 19TFF1.
(Thank you Zaph for your fantastic page!!!!)
But which one do you prefere??
I want to use one of them in a 2,5 way with active 4th order LR at ~3000k.
Tweeter will probably be Vifa XT19 or maybe Seas 19TFF1.
Thanks for the responce, right now it´s 50/50!
Since I'm going to use a an active filter I can adjust the LF responce if I want but I think the extra bass from the "0.5" will be enough (as sreten also wrote)
Since I haven't heard any of them I would be very happy to get some comments from someone who has!
Since I'm going to use a an active filter I can adjust the LF responce if I want but I think the extra bass from the "0.5" will be enough (as sreten also wrote)
Since I haven't heard any of them I would be very happy to get some comments from someone who has!
Ok, not to start a flaming war in here but according to some, CSD doesn't show anything more then the THD and FR graphs already do. Just a different way of looking at the same data. I stopped looking at them completely but that is just me. It's also been said that once your x-over is installed, it will make both CSD graphs look similar, so I pay more attention to THD.
What I would be curious about is the difference in X-max. Granted in a MTM speaker x-max is less of an issue because you have double the woofers but 3.5mm to 5.0mmm is a big difference. Can anyone comment on that?
What I would be curious about is the difference in X-max. Granted in a MTM speaker x-max is less of an issue because you have double the woofers but 3.5mm to 5.0mmm is a big difference. Can anyone comment on that?
Just to add to the war THD and FR tells you little about the transient responce. Maybe if you add the phase responce that will be enough........
The difference in X-max is interesting....but peerless has lower LF THD at the level Zaph measured. Also, is larger X-max always good or does it effect the midrange? (http://www.zaphaudio.com/lowxmax.html)
THD and FR tells you little about the transient responce. Maybe if you add the phase responce that will be enough........The difference in X-max is interesting....but peerless has lower LF THD at the level Zaph measured. Also, is larger X-max always good or does it effect the midrange? (http://www.zaphaudio.com/lowxmax.html)
I do not think anyone auditioned them in an identical condition (except Zaph, but he didn't use them in a design). And keep in mind that a driver can sound different depending on HOw it is used.
For a 2.5 way design, distortions below 300 Hz is important. I'd personally choose the Peerless for this reason. Also, I'd use a bit larger inductor even for the midrange woofer to achieve real full BSC for the system. The distortion profile of this driver calls for this approach IMO. Read Zaph's comment on the relationship between a driver's distortion profile and BSC. Find it in his blog (October 29, 2007).
For a 2.5 way design, distortions below 300 Hz is important. I'd personally choose the Peerless for this reason. Also, I'd use a bit larger inductor even for the midrange woofer to achieve real full BSC for the system. The distortion profile of this driver calls for this approach IMO. Read Zaph's comment on the relationship between a driver's distortion profile and BSC. Find it in his blog (October 29, 2007).
You are right Jay_WJ, the implementation is very important. More important than the difference between the seas an peerless woofer I guess.
I really hope there are some people that actually listens to different woofers before chosing one for a new design. Just to listen to them full range (or with a simple 1st order filter) can tell you a lot about the sound.
Interesting about the BSC....I need to think about it and maybe even do a test later....but now I have to go to sleep!
I really hope there are some people that actually listens to different woofers before chosing one for a new design. Just to listen to them full range (or with a simple 1st order filter) can tell you a lot about the sound.
Interesting about the BSC....I need to think about it and maybe even do a test later....but now I have to go to sleep!
I've only seen DIY designs using the 830873, not the Seas. Though the larger brother of the Seas, the ER18RNX, is widely VERY highly regarded.
However, in any comparisons I have seen done between speakers [involving either of those you mentioned] the 830873 came out on top and was very well liked. The only example I can recall at the moment is Brandon's [Augerpro] "Metal vs. Softy" over on the HTGuide Forum.
However, in any comparisons I have seen done between speakers [involving either of those you mentioned] the 830873 came out on top and was very well liked. The only example I can recall at the moment is Brandon's [Augerpro] "Metal vs. Softy" over on the HTGuide Forum.
I have heard the peerless in the Krix Neuphonix.
Krix experience sound - Home Entertainment - Product Detail - Neuphonix
It was some of the best bass I have heard to date. However they use an OEM version which could have quite different parameters (hopefully not).
Thanks for the responce, right now it´s 50/50!
Since I'm going to use a an active filter I can adjust the LF responce if I want but I think the extra bass from the "0.5" will be enough (as sreten also wrote)
Since I haven't heard any of them I would be very happy to get some comments from someone who has!
I've used several similar Peerless drivers, and like them. The 830991 is a glass fiber cone version. I think its midrange performance is exceptional. My measurements with HOLM show it to be very clean as well.
The Glass-Fibre Composite (GFC) cone offers a unique acoustic and visual experience. Specifications: *Power handling: 30 watts (IEC 2685 18.1) *VCdia: 1" *Le: 0.33 mH *Impedance: 8 ohms *Re: 6.0 ohms *Frequency response: 66-7,000 Hz *Fs: 66 Hz *SPL: 87 dB 2.83V/1m *Vas: 0.24 cu. ft. *Qms: 3.0 *Qes: 0.58 *Qts: 0.49 *Xmax: 4.55 mm *Dimensions: Overall diameter 6", 5.275" across flats, Cutout diamter 4.75", Depth 2.75".
- Truncated cast aluminum frame
- Glass-Fibre Composite (GFC) cone with half-roll rubber surround
- Long-throw voice coil
- Shorting rings for reduced distortion
- Under-spider and voice coil ventilation
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