BillFitzmaurice.info

The only issue is if he has to separately power and limit the two. If separately limiting isn't possible he'd have to limit to the lower capacity of the two.

Mishkin wrote: ↑Fri May 15, 2026 2:48 am I'm wondering if the discrepancy in output will compromise the benefits of V-plate coupling them.

The advantage of V plating is a longer horn path and larger mouth, so it always gives a better result.

The distance between the mic and the listening position must be very short. Where lows are concerned with wavelengths of 10 feet and longer, plus the room reflections, the region where cancellation is possible is very small. Not an issue with headphones, not too great an issue in a car, but a pretty...

For it to work the speaker and mic would have to be very close to the listening position, because phase isn't just a matter of time, it's also a matter of distance. For that reason it's easy to make noise cancelling headphones, and relatively easy to make noise cancelling audio systems for cars. If ...

In theory, yes. That's the same way that noise cancelling headphones work. In practice it might not be that simple.

97 is close enough to 100.

From the T24 plans: 'The 11.5mm xmax of the SSF 102.50 gives almost the same output as two BP102, so while it’s expensive it may be worth it if you have more cash than pack space.'

First off look at hi-fi drivers, not auto sound. Auto sound drivers in general are not suited to horn loading. Their huge magnets and surrounds and high Qts are intended for small inefficient sealed boxes. Second, there's no need for xmax of 20mm. Anything over 12mm is superfluous.

Regarding the blocks they should be either screwed or clamped while the adhesive sets. That forces the adhesive to expand into the pores of the wood for a better bond. Without pressure on the blocks the expanding adhesive can push the blocks away from the baffle and the bond won't be as good. It's n...

For some interesting dialog watch 'Deadloch'. I'm usually OK with Oz/Tasmanian/Kiwi accents, but the dark haired lead character, Madeleine Sami, is almost totally intelligible. Even worse than a rural Scotsman.

Klipsch has been overstating sensitivity for decades; I'm sure that Paul is spinning in his grave while muttering 'bullshit'. Since the SLA has over twice the driver count it will be at least 6dB more sensitive, while the nine tweeters will bitch slap the single tweeter of the Kilpsch.

It's not supposed to be linear, it's supposed to be logarithmic. Doubling of volume isn't twice the power, it's ten times the power.

Matthewg007 wrote: ↑Wed Apr 01, 2026 10:00 pm I worked at BOSE for 21 years…

You had no highs, you had no lows...but you've got the lows now.

It's easier to cut the hole with multiple passes, going through it in one pass bogs the router down and overheats the bit.

The OT12 crossover is 2nd order low pass, 4th order high pass at 2kHz. Never use 2nd order/2nd order, it creates polarity issues.