Tweeter replacement in my Schroeder cab

[maestrosteve]

I'd like to replace the tweeter in my mini 12+L with a Beyma CP21 tweeter. There's nothing wrong with my stock tweeter, but the Beyma is an exact size replacement, and one really superior sounding tweeter. Jorg says his tweeter is a 200 watt tweeter, the Beyma is a 50 watt tweeter with a recommended crossover point at 5.0 kHz or higher, and very high sensitivity.

I've spoken to and asked Jorg in the past, but I've never been able to find out where his crossover point is, and how much power is being sent to the tweeter. Usually a fraction of the power sent to the cab is used by the tweeter (when used with a crossover), and 50 watts sounds good for a 400 watt cab, but if his 200 watt tweeter is getting a lot more power than 50 watts, I wouldn't want to blow out the new tweeter, since these Beymas are very expensive.

I know you'll say to ask Jorg, and while he's a great guy and we've emailed and spoken on the phone, I can never get the answer that I'm looking for.

What's making it harder for me, is that I once bought a similar tweeter to replace his stock tweeter, and it didn't work. It was either defective, or I blew it up immediately after turing on my amp head. I'm thinking defective, but before I invest in another high quality expensive tweeter, I really should get the answers to my questions.

Would anyone here know specifically about where his crossover point is?

Is there a way to hook up some kind of meter and see what kind of wattage is being sent to the tweeter?

Thanks, and I look forward to any helpful responses.

Steve

[Petebass]

If you open up the cabinet, are you able to read the values on the inductors, capacitors and resistors? If so we might be able to reverse engineer the crossover to determine the crossover frequency and level of attenuation.

Another way to do it is to measure. You'd have to disconnect the 12" driver, then run sine waves through the tweeter only. I'd start at 6K and work backwards, 5.8K, 5.6K and so in on lots of 0.2K. Measure the output of each frequency with a dB meter, and plot the result on a graph. That graph should clearly show the frequency where the roll-off begins.

More importantly, what is the impedance of the stock tweeter? If it's 8 ohmns, the replacement must also be 8 ohms or the crossover won't work as designed.

If it were me I'd just build a new crossover for the new tweet and be done with it.