Compact Studio Monitor

Drivers: ScanSpeak 18W/8545-K00 and Vifa XT25TG-30-04
Read intro for CSM range of speakers

Crossover simulation

Simulated response from LspCAD

Measurements

Left: Left and right speaker, SPL @ 1 meter/2.8 volts, merged at 350 Hz with woofer nearfiled response.
Right: System impedance, min. 4.5 ohms at 500 Hz.

Left: individual response of drivers from x-over and summed response (red).
Right: Response with inverted tweeter polarity (blue) showing excellent phase tracking at point of crossover.

Cumulative spectral decay of system.

Hi Troels
Attached is a photo of my system. The silver amp was home-made almost 2 years ago (The stand was also home made). As for the speakers, amazing may be the right word, great sound with a deeper bass that I expected from what I've read about this driver and considering that the cabs are not tuned like they should and the driver is new. The XT25 really is a great driver, especially at this price. As I've told you I'm going to build new cabs, but that may take a while. I'll send photos when they're done. I'm going to share with you my idea for new cabs: Imagine something like the Guarneri where the stand is hollow. The look of a monitor with the volume of a floorstander. Something around 24 liters (like the Amish) may give a bass extension not expected from something that looks small. And I think the 8545 "ugly" look will go great with a leather front panel. What do you think? Now, if I can do it, is another story. Many thanks for everything. Best regards, Adelino

Hi Adelino. Thanks for taking time to respond to the kit#3. I'm pleased it seems to work out as intended and thanks asking about tweeter placement. It made me do the tests on tweeter placement - and the kits generally more versatile. The XT25TG is an easy driver and I have added the findings to the general CSM page: http://www.troelsgravesen.dk/CSM.htm
The "ugly" cones should look really excellent with leather as they did on the 1st generation Amati from Sonus Faber.