... So im dating Remeides sister who is not quite in the same league as Remedies, I'll admit that but you still can't wipe the smile off my face!And yeah using THE scanspeak.
Re larger passive radiators I have Audio Elegance SBP15 here (but not with Apollo upgrade). if any driver was it Romy, I'd say that's the one. With the A[pllo upgrade though.
Why do i say that, well here is my theory on why the THAT scanspeak is a unicorn first. The motor designers used copper shorting rings or sleeves, or both, im not exactly sure but they made efforts to have the flux NOT move around in the gap. Audio Elegance uses the same approach and take it to the extreme with the Apollo upgrade. Why is that relevant here? Well, there is electrical dampening happening not just mass dampening with Dannoys which is not the usual passive radiator situation.
I think this is what has the SS lock to the Tannoy so well and why it rides it right up into the mid range to impact HF. obviously HF is from another driver but the two join at some point. Also, i think the way the suspension is done contributes significantly to the linearity of the SS and its dampening quality so my guess is if you drop that surround, you are likely to loos a lot of whats gained.
I asked the robot about the issue and he explains it much better than i do. quote below.
The Special Feature: Copper Shorting RingsYou've highlighted something crucial! The Scanspeak 25W/8565-00 indeed features a sophisticated motor design with copper shorting rings (sometimes called Faraday rings or a copper sleeve). This is a major factor in what you're hearing. Here's how these shorting rings dramatically enhance performance: How They WorkThe copper shorting rings are conductive loops positioned around the pole piece of the magnet. They create their own short-circuit paths within the motor structure itself. These rings allow eddy currents to flow even when the external terminals are open, effectively providing a form of "built-in damping circuit" that works independently of external connections. Their Acoustic BenefitsThese rings contribute to your excellent sound in several ways. They reduce voice coil inductance, creating more consistent impedance across frequencies. They minimize distortion by counteracting asymmetrical magnetic forces that occur during cone movement. The rings improve transient response by allowing faster acceleration and deceleration of the cone. Finally, they linearize the motor, making behavior more predictable at various excursion levels. In Your Passive Radiator ApplicationAs a passive radiator, these shorting rings are particularly beneficial because they provide significant electromagnetic damping even with open terminals. They create more controlled, less "boomy" bass response. The rings help manage the "overhang" (how quickly bass notes start and stop). Additionally, they reduce intermodulation distortion in the system. This specialized motor design is almost certainly a key factor in why your unconventional design works so exceptionally well. The copper shorting rings essentially give you the benefits of electromagnetic damping without needing to manually short the terminals!
So Romy, yeah a varibale resistor on those terminals is going to change things but i'd guess, all in the wrong ways.
I do have another idea though that may work. that is a pretty hesitant may though! but it is making some sense in my head. I'll post again soon.
Also, I have been holding out on posting pics as i generally dont post them anywhere but ill get you some eye candy soon N-set.
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