I have a nice stash of 7" Scan Speak drivers made for Thiel that I got a great deal on and have sitting around, waiting to be utilized in some way.
I want to build multi driver arrays with them in a sort of 2.5 way fashion and figure out how / where to LP them (progressive staggered LP filters) so I end up with even FR summed together as a system.
Driver model is DRWF-053-001 / Scan Speak 18W-5537G-01
Driver specs are Fs=41Hz , Qes=.52 , Qms=7.9 , Qts=.48 , Vas=28 ltrs , Re=4.6 , Le=.33mH , Eff=88dB/W.
I was thinking of using 6 to 8 per side in sealed enclosures. With room gain they shouldn't need the help of subs due to multiple drivers with low Fs and higher Qts.
One issue is where to place the tweeter (Audax TW034XO in waveguide) so its at a good listening level, being a large dome with compromised off axis HF. I'm not sure if its wise to run the tweeter as WTW or just use an additional LF driver running as a mid with the tweeter, forming a 3 way design instead of 2.5 way WTW (or even MTM). In an MTM arrangement, the benefit would be lower mid frequency distortion only having to reproduce mid frequencies, which is what I want but i have limited vertical baffle space and don't want to exceed 60 inches enclosure height. Another issue is tweeter sensitivity, which may not be high enough in an MTM or WTW configuration. The TW034 is 93dB/2.83V so it may be efficient enough...
The crossover has to be passive and I don't want to use DSP of any kind. I know this is somewhat of a restriction but I listen to alot of vinyl and want to keep it all analog. I have a Klark DN410 EQ if I really need to get crazy with FR correction, but I really prefer to do everything passively if at all possible.
Any input and help is appreciated.
I want to build multi driver arrays with them in a sort of 2.5 way fashion and figure out how / where to LP them (progressive staggered LP filters) so I end up with even FR summed together as a system.
Driver model is DRWF-053-001 / Scan Speak 18W-5537G-01
Driver specs are Fs=41Hz , Qes=.52 , Qms=7.9 , Qts=.48 , Vas=28 ltrs , Re=4.6 , Le=.33mH , Eff=88dB/W.
I was thinking of using 6 to 8 per side in sealed enclosures. With room gain they shouldn't need the help of subs due to multiple drivers with low Fs and higher Qts.
One issue is where to place the tweeter (Audax TW034XO in waveguide) so its at a good listening level, being a large dome with compromised off axis HF. I'm not sure if its wise to run the tweeter as WTW or just use an additional LF driver running as a mid with the tweeter, forming a 3 way design instead of 2.5 way WTW (or even MTM). In an MTM arrangement, the benefit would be lower mid frequency distortion only having to reproduce mid frequencies, which is what I want but i have limited vertical baffle space and don't want to exceed 60 inches enclosure height. Another issue is tweeter sensitivity, which may not be high enough in an MTM or WTW configuration. The TW034 is 93dB/2.83V so it may be efficient enough...
The crossover has to be passive and I don't want to use DSP of any kind. I know this is somewhat of a restriction but I listen to alot of vinyl and want to keep it all analog. I have a Klark DN410 EQ if I really need to get crazy with FR correction, but I really prefer to do everything passively if at all possible.
Any input and help is appreciated.
