The Master - let's see just how close to reality we can get... (The tech part)
***2009 edition***

 Kittet benyttes internationalt og er derfor beskrevet på engelsk.
OBS: Kan også bygges i almindeligt kabinet


Listening to the Master is like listening to a big floor standing speaker, but with all the benefits of perspective and sound imaging intact!


General Note: A Crossover Network should never be complicated. If that is called for it must be because we have chosen drivers out of match or the wrong kind of cabinet size/ tuning!


The calculations for component values however, it is almost never possible to get right with just a calculator. At FreQuence we have a few simple formulas to kick off the project and after that, computer measuring, golden ears and common sense takes over. We have no "religion" for a specific filter type or cabinet system, but chooses freely what is optimal for the desired speaker in play.


The Master crossover is no different. Just a corrected 2. - and 3. order network. The 3. order goes to the tweeter and the 2. order to the woofer.


The important thing is that you get the values right. Not only mH for the tweeter coils, but also the impedance in the coils used for this speaker. 


As standard we have chosen good combinations without going crazy on the silver coils and all silver caps - but a fine well balanced network.


We guarantee you will get a unique monitor there is truly state of the art and ranking only with the absolute elite of transducer driven speakers existing to day.


This site: Technology, part list & specifications         Access the cabinet building here


Network & fine tuning Details:

Also on this 2009 version a selection of capacitors and coils was tried out. The chosen combination provide outstanding result and still there are money left for a good bottle of vine.

Complete MASTER part list beginning with the network components:

Description Item number A: Terminal +
Serial coil for woofer Mundorf CFC14 1.20 mH 0.29 Ohm
Parallel capacitor woofer PCA 12 uF 400V 2% B: Bass +
Serial capacitor for the tweeter (1) Mundorf Supreme 4.70 uF 800VDC
Parallel coil for tweeter PCA Ø0.70 0.33 mH C: Tweeter +
Serial capacitor for tweeter (2) Mundorf Supreme 6.80 uF 800VDC
Serial resistor for tweeter L-Pad PCA 15W 1% 5.60 Ohm D: All minus (-)
12 uF, 0,33 mH & 39 Ohm goes together along with bass, tweeter and connection -
Parallel resistor for tweeter L-Pad PCA 15W 1% 39.0 Ohm
   
Easy to build network:    

ScanSpeak Tweeter D3004/660000 or 662000 or 6620001 (Just ad comment when ordering what type/color you want)
ScanSpeak Woofer 18W/4531G00 -
Internal cables PCA OFC 2.5 sqmm straight cores 1 meter -
Reflex tubes x 2 per speaker Ø4.3 900030 -
Connection/Binding post WBT 0765 -
Screws black x 11 4x18mm UMB -
Damping material MDM-3 -
Network assembly board 13x15 board for crossover network hard wiring -
     

See the currently sharpest price for this complete kit here...


Frequency response (2007 version. 2009 to be uploaded).

Crossover frequency: Almost no visible sign of the two drivers meeting. A perfect roll off from both drivers and the school example of a -6 dB meeting point for the drivers at roughly 2800 Hz. It doesn't become much more perfect. (2009 version: 2440 Hz X-Over).