fpitas
Master Contributor
I can almost think the DIY look is part of the cult appeal.
Yes that's true. Usually you can safely cross double the fs frequency, but sometimes you have to consider frequency response distortion and how steep the filter is.Peerless BC25TG15-04 seems to be an excellent tweeter option for a budget DIY speaker. I hadn't used with the 8 inch Eminence Alpha8 (which seems to be the bass driver in the Tekton M-Lore speakers), but there are plenty of other suitable bass, bass/mids that can work well with that tweeter.
Isn't the rule of thumb to double up the FS on the tweeter plus a steep (24 dB?) filter, there you have the lowest crossover point?
The FS for the Dayton rst28f is 710 Hz and Dayton themselves state: Frequency Response 1,400 - 20,000 Hz....so that rule of thumb can probably work relatively well...or? However, I have seen others say that you should have a little more headroom and raise the crossover a bit more. In any case, the most important thing is to get a good FR and a dispersion you like, after that you can worry about distortion. That's how it is for me anyway.
That is if it's not too damn noticeable distortion to begin with, but then I'm talking about a lot of distortion. For example, amp clipping. Think high volume on an old lousy car stereo that is pushed hard. The kind that to the ears is really unpleasant distortion.Okay that was a bit OT, but still.
![]()
That's the whole pointPeerless BC25TG15-04 seems to be an excellent tweeter option for a budget DIY speaker. I hadn't used with the 8 inch Eminence Alpha8 (which seems to be the bass driver in the Tekton M-Lore speakers)
Yes, of course, they are designed to work with SET amps. Single eEnded Triode amps have a cult following. Their characteristics are very low output, 6-8 watts with bloom in the bass, strong vocals and sweet rolled off highs. Some claim a good SET setup has a 3d soundstage like no other. The tubes are typically 2A3, 300b and others.Not coincidentally, I think both Tekton and Zu are supposed to work well with tube amps. Perhaps that's a distant early warning![]()
That's very tactful. I've heard descriptions likening them to a sonic buzz saw. Maybe the SET mushes over thatZu speakers are not cheap even though their performance is questionable.
Present company excluded, of course. LOL.I liken it to the “stoned” audiophile.
It would be fine if it served a purpose. I haven't seen evidence of that yet.it is a crime how ugly this speaker is
Amir reviewed a Jbl line array I believe it did very well.Tekton are the guys offering the "ring of tweeters" speakers. Would be interesting to see how one of those would fare on the Klippel. Not very well, I suspect, but worth a try.
Also, this brings to mind that almost all the speakers I've seen measured and reviewed here seem to be point source designs, or, in the case of center channels, MTMs. I think it would be good to see a few line sources reviewed as well. Maybe one of the classic Infinity Kappas, for instance, or anything else out there like, for example, the Don Keele CBT24 line array.
![]()
I think they would make a great review subject if a member has one they could send to Amir.
Not really,1.5" that's why the reduced power rating (compared with the bigger,nicer Eminence ones with 3" or bigger coils)One ugly speaker in measurements and looks.
That woofer center dust cover is huge relative to the overall diameter. Is voice coil really that wide?
1.5" or 2" is usual in this category to allow 150-200w of power handling.One ugly speaker in measurements and looks.
That woofer center dust cover is huge relative to the overall diameter. Is voice coil really that wide?
And why would anyone care these days that we know sound power is as important as direct sound?Off axis is horrible but look at the on axis response
……… But the distortions between 1.5 kHz and 3.5 kHz at 86 dB at least are the lowest, that I have ever seen!
good point. This eq gives more or less the same result.......mmmmh, I'm wondering if that sort of EQ is such a good idea. The port tuning of the box is 47Hz or so. Boosting below the tuning with 6dB? I think it's not a good idea. My first idea would be a high pass with a Q of around 1.3-1.5. As long as you boost on the tuning frequency, you gain level from the port and as long as the diameter is large enough, it works well. The high-pass function also reduces the excursion below the tuning. Below the tuning frequency, the cabinet is more or less open and only the suspension of the driver controls the cone - not very linear and dangerous for the driver.
The hole at 180Hz is a strong standing wave mode in the tall cabinet.......I would never put more energy into such a resonance.
Adding boost at the low end to get maximum level, but with the very sharp roll-off, is something that I would not do on a speaker, as it adds ringing....can end up with boomy bass. But I learned the taste of bottom end is different in the US.
+1To take out the 600-700Hz thing is OK. Without simulation it (Tolvan, The Edge), I would say, it's an effect of the cabinet shape, with the woofer hanging on top of the box. Could be also the edge resonance of the woofer, but as I did not see distortion going up, it should be the cabinet.