DanielT
Major Contributor
Fun to think of different solutions. Hypex, it definitely makes sense. What you say is undeniably interesting.. Thanks for the tips on crossover frequency for books shelf speakers.I mean one needs to run the say 80Hz at some 6, 12, 18, 24 etc slope for the low pass filter (LPF), and then a similar scheme for the high pass.
Otherwise you have the woofer voltage peaks that the MR/Tweeter are riding on, and you gain nothing.
So is 2x topping and a MiniDSP more than just a pair of Hypex?
And then you also need the funny cables. So 350 + 350 + MiniDSP, + “funny cables” + speaker cables.
Whereas 2x FA122 is twin 125W so about 950 USD.
So I think in our scenario it is a pretty cogent argument to have the FA122 mounted on the back of the bookshelves, rather than using a pair of the Topping PA5.
No speaker cables, and the same cost of less cost going with the Hypex with built in DSP.
If talk about a three way then the FA123, FA253 or FA503 gives 3 NCores with one being a smaller tweeter power (100W)… Then it is no contest that the Hypex wins over the PA5 in cost.
At least, in my real case, most of the reason for the post is to see if the Hypex makes sense in the scenario I mentioned.
(It is certainly not an attack.)
I sort of believe you, but without some screen shot of a voltage trace It is hard to be 100% sure.
I would probably roll those books shelf speakers off a 12 db/oct at 60-80Hz, or 100 Hz at 6 dB... Because any low notes, that the speakers cannot really play, is where the huge voltage swings drive the output to the rails.
It is, in Sweden in any case, recognized demanding speakers. Qln One. Maybe hard to believe when you see them. But sealed, completely crazy with stopping / moff. I put one of them (see attached picture, the white speaker Qln) on a one JPW P1. Big difference between the JPW-Qln speakers in terms of sensitivity and driving them. To Qln advantage, speaker boxes with very little resonances. Qln absolutely needs a sub. I'm working on a couple of simpler DIY subwoffers now. I wIll connect them with Qln at the beginning of next year.
You were quite right those where the QLn would really feel good to be unloaded below 80-100 Hz. The amplifier that run the Qln would "breathe" easier then. By the way, this does not only apply to me and my speakers. It can be something to think about for anyone who has tripod speakers/books shelf speakers.Combination them and active sub and sensible integration with LP-HP filters.
Edit:
I can add that I am currently playing older uncompressed, not loudnessed CDs. It undeniably places its demands on speakers and amplifiers.
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