Recent content by Bassgeige

The specs don't actually say that the cab handles 800 watts. They say that 800 watts is the recommended maximum amp power. Different thing. Apart from the weight and size, all of those specs are misleading. It's a 400W cab, despite the marketing claims.

You're not doing anything wrong. What you experienced was the sound of a plastic cabinet. No matter how you eq your cab, it will still sound like a bass played through a plastic bucket. I recently did an a/b comparison of a QSC 12" cab with a proper bass cab and was surprised how bad the QSC...

Thanks, agedhorse, although I was hoping for something more specific to the problem at hand. What resonances are we trying to control with our 1-ohm resistor? While it may be true that low damping can result in smeared and unnatural audio response, it's not necessarily the case. What is true is...

So, how can introducing losses in the midrange driver here improve the resonant behaviour of the bass driver? I'm baffled.

"The main reason is to insure that one of the terms of "the equation" has some loss which generally improves perception (regardless of the impedance) if tone." What does this mean?

If the problem area is 200Hz, what's the thinking behind putting a 1ohm resistor in series with the midrange driver?

That's useful. Unfortunately, you can't make 5 ohms and 10 ohms out of three 20 ohms resistors. So that's the first problem. (Already pointed out by sclift).

I've had another think, and the only way I can see the resistors causing that kind of dip is if you double or triple the value of the series resistor in the circuit. The only way to know for sure is to measure what happens when you flick the attenuator switch to off. I'll be interested to hear...

Just noticed you're not using an L-pad attenuator (which most people would call a volume control). Oops. Still, the problem has to be with the L-pad resistors, which are probably not wired correctly with the switch. I'm guessing that the switch short circuits the series resistor but leaves the...

The "attenuator on" curve looks fine. So I suspect you have a faulty L-pad attenuator. They're not the most reliable of components at the best of times. An L-pad should keep the impedance constant no matter what the attenuation level, and that's not happening. To confirm, either replace the...

Voice coils are wound by machine and normally to tight tolerances. If two identical cabs sound different (once external influences have been discounted), there's something wrong somewhere.

It's not good. The wadding should be fixed so that it can't move inside the cabinet. It's shoddy workmanship. As others have said, it's not critical (although it could possibly block the ports) but it shouldn't happen.

If the cabinet wasn't vibrating the head wouldn't move. It's vibrating.

As your post followed mine, I assume you were responding to me (?). I never mentioned Subway cabs in my post.

It sounds like the Subways don't suffer from the problem - and they're not particularly heavily braced.