audio-talk

I would say, just try it. If it hums, you know that there is a ground loop to deal with. If not - proceed to the enjoyment stage. What we do not know: is this for your home audio, or for PA purposes. I often wonder why symmetrical connections (other than transformer coupling) are of any interest in ...

And now the tweeters
Thanks to John Carlson and his Karlson Couplers Beyma CD-1ND drivers

In actual use, Jon will likely be around 2m from the speakers, and approx 3" down from the tweeter axis. So, I did another final measurement to represent that. I think this one used 1/6th-octave smoothing , bearing in mind that was just one measurement. As you can see, the slight rise to 10kHz...

Scheme to physically time align the woofers and horn. I adjust the 3 bolts on the front and back of the mounting plate to get the right spacing.

Sounds like a good plan Looking forward to the tweeter - not seen one like that before Examples can be found online with the search of Karlson Tube. DIYAudio and other forums have dealt with this in depth. My interest is getting physical phase alignment, low distortion and more of a "point sou...

Very nice That 60Hz is going to be fun to fill in Do you know where it is coming from? I have similar on my left speaker as there’s a bay window at that side - the other side is open to the dining room, so I don’t have it on the right speaker You have it on both speakers even though your room isn’t...

Here are the first measurements after a couple of days of tweeking. Biamped. No EQ, crossover at 500 Hz, room response from listening seat (3.5m). I just love this horn! 12dB/8va smoothing, no spliced in nearfield LF. I am happy at this early stage. Today I am working on cabinet damping. Sticking my...

Good job it is a hypothetical speaker and nobody is building it then Seriously though, many small bookshelf speakers are tuned to around 70Hz, so not ridiculous, unless, like you said, you like bass I was thinking that if we have even music without extremely powerful bass, what happens below reflex...

One could argue that a bass reflex design with an 80 hz tuning is the huge mistake if we like bass - regardless of what subwoofer that we use.
Then would come the discussion of how to even cross over to an 80 Hz tuned bass reflex design - plug the port and cross at 120 Hz or whatever.

I think whether room or speaker dominates depends on their relative frequencies. My living room has a strong peak at 50Hz, a large dip at 40Hz, and there’s a big suck out on the left speaker at 70Hz. A bass reflex cabinet tuned to 80Hz would be speaker dependent, below that, the room definitely dom...

I prefer to think of Thiele/Small as having nothing directly to do with optimising distortion or sound quality, rather just providing a desired level of “bass”. The inaccuracies of a proper alignment for given parameters are surely miniscule compared to room effects. In theory, a bass reflex (Helmho...

I am happy that we got such a response on the “constrained layer” principle. Moving the resonance of the box material up makes it easier to damp but, increasing mass can increase stored energy, so like most things in life, you just have to strike a balance. In my case, the curved sides probably also...

I've heard many 1000s of systems over the years but exaggerated articulation due to excessive damping is a new one on me.. My speakers too seem to perform equally well with any type of amplifier, the quality of the amplifier being the overriding factor I do not read much about "articulation&qu...

It was Chris's idea. A 8.2mH in series with the Supravox, and a 0.47mh in series with the Lowther. In both cases to roll off the drivers before the response gets ragged and to improve the match to the next driver up in frequency. A unexpected effect has been to make the speakers play nicely with bo...

Thanks Rowuk, some food for thought. I've never seen bamboo ply but googling it, it's the same price as birch ply, £220+ a 8x4 sheet - the price of sustainability I suppose. I've sometimes wondered about expanding foam rather than sand. It should fill all the voids if done carefully and wouldn't se...