Hi all,
After listening for some months to my latest two designs, I've reached a conclusion... I don't know if its wrong, but it certainly seems to match what I've observed.
I've noticed I'm always trying to make speakers as sensitive as possible. Due to this fact, my designs always hover around 4 Ohm. Whenever working with metal cone drivers, though, due to the sharp filters required, impedance sometimes drops below that mark. Also, when using two 8 Ohm woofers in parallel (or one 4 Ohm), impedance drops to 3.5 or so Ohm. Meanwhile, the tweeters hover at around 6 Ohm or a bit more (depending on the model).
Anyway, this results in a bright, forward sounding speaker when used with my tube amps (MC-30's, MC-40, etc). Even when using them through the 4 Ohm tap - it doesn't help.
IIRC, a tube amp behaves like a CC source, so low impedances bother it quite a bit. I'd assume that, with DIY designs, this is a sometimes overlooked fact -since SS amps can handle almost any load gracefully.
Am I correct in my assumptions?
After listening for some months to my latest two designs, I've reached a conclusion... I don't know if its wrong, but it certainly seems to match what I've observed.
I've noticed I'm always trying to make speakers as sensitive as possible. Due to this fact, my designs always hover around 4 Ohm. Whenever working with metal cone drivers, though, due to the sharp filters required, impedance sometimes drops below that mark. Also, when using two 8 Ohm woofers in parallel (or one 4 Ohm), impedance drops to 3.5 or so Ohm. Meanwhile, the tweeters hover at around 6 Ohm or a bit more (depending on the model).
Anyway, this results in a bright, forward sounding speaker when used with my tube amps (MC-30's, MC-40, etc). Even when using them through the 4 Ohm tap - it doesn't help.
IIRC, a tube amp behaves like a CC source, so low impedances bother it quite a bit. I'd assume that, with DIY designs, this is a sometimes overlooked fact -since SS amps can handle almost any load gracefully.
Am I correct in my assumptions?
Comment