I FINALLY got off my ass and modified the mini towers last night to install the DM7500's.
after just a few tweaks to the DSP/XO's and standing mid field in the sweet listening triangle these things are nothing short of amazing.
That airy/breathy ambience that only a dome can bring is now added at lower frequencies making piano and vocals sound much more intimate like actually having them there in the room with me.
I left them to break-in @300Hz last night and probably move those speakers to my drum room today for mid-field monitors.
One note - Still need a woofer to reach/play to about 800 ~ 1KHz in order to give the combo depth as the DM7500 lacks the piston-punch of a cone but the SB20PFC's are doing that just fine . . .
My only complaint with the DM7500 is that the soldering work in attaching the voice coil wires to the spade terminals was a bit thick as I was unable to utilize standard 1/4" Sta-Con crimp connectors and had to solder pigtails to those terminals - not a show stopper.
Looks like the MiniDSP 4X10 is TU after trying to get it going tonight - worked for a few minutes then stopped output on the mini towers so I got fed-up with it and pulled it and the amps from service - now choking on dust/ cleaning and reconfiguring the drum recording rack with a newer system - going to try this new Acoustas DSP amp 1st and see how it performs now that I have a Windows UI for it fresh in my hands . . .
Hey Eric - that Acoustas DSP amp is a spectacular performing piece of gear for mixing/mastering amp.
Perfectly quiet with USB and COAX audio input with no discernable distortion even at full volume.
Having acquired a pair of these domes, I plan on using them with some NeoCD3.5H and RS270-8 in some old DLK cabs (still need to source). The voicecoils on the domes will be much further forward than the other drivers so I thought a small waveguide might work well. I designed these waveguides with the Ath4 software, added flanges in CAD, and printed one out today. I did some very basic measurements just to see what impact the waveguide would have. I had a 68uF in series with the domes.
I'm running the DM7500's flush on baffle with the HiVi RT1.3WE and SB20PFC30-4 (NLA) in my mini towers and they sound fantastic. Had to plug the 3" ports for use in my studio room - too much bass - sound better sealed 1 cu ft.
Comments
This ^ is very interesting to me.
Thanks for finding and posting this example - it would also be interesting to see how other driver types fare in this regard.
I FINALLY got off my ass and modified the mini towers last night to install the DM7500's.
after just a few tweaks to the DSP/XO's and standing mid field in the sweet listening triangle these things are nothing short of amazing.
That airy/breathy ambience that only a dome can bring is now added at lower frequencies making piano and vocals sound much more intimate like actually having them there in the room with me.
I left them to break-in @300Hz last night and probably move those speakers to my drum room today for mid-field monitors.
One note - Still need a woofer to reach/play to about 800 ~ 1KHz in order to give the combo depth as the DM7500 lacks the piston-punch of a cone but the SB20PFC's are doing that just fine . . .
Added:
My only complaint with the DM7500 is that the soldering work in attaching the voice coil wires to the spade terminals was a bit thick as I was unable to utilize standard 1/4" Sta-Con crimp connectors and had to solder pigtails to those terminals - not a show stopper.
Looks like the MiniDSP 4X10 is TU after trying to get it going tonight - worked for a few minutes then stopped output on the mini towers so I got fed-up with it and pulled it and the amps from service - now choking on dust/ cleaning and reconfiguring the drum recording rack with a newer system - going to try this new Acoustas DSP amp 1st and see how it performs now that I have a Windows UI for it fresh in my hands . . .
Hey Eric - that Acoustas DSP amp is a spectacular performing piece of gear for mixing/mastering amp.
Perfectly quiet with USB and COAX audio input with no discernable distortion even at full volume.
I'll be purchasing more of them.
Looks like a nice piece, but is a bit light on overall power.
Not for my needs but for rocking-out it isn't suitable - agreed.
It's absolutely perfect for my studio as a reference monitoring system - I can't play so loud that I ruin my hearing for the evenings . . .
Having acquired a pair of these domes, I plan on using them with some NeoCD3.5H and RS270-8 in some old DLK cabs (still need to source). The voicecoils on the domes will be much further forward than the other drivers so I thought a small waveguide might work well. I designed these waveguides with the Ath4 software, added flanges in CAD, and printed one out today. I did some very basic measurements just to see what impact the waveguide would have. I had a 68uF in series with the domes.
Sweet!
I'm running the DM7500's flush on baffle with the HiVi RT1.3WE and SB20PFC30-4 (NLA) in my mini towers and they sound fantastic. Had to plug the 3" ports for use in my studio room - too much bass - sound better sealed 1 cu ft.
Looking forward to your design outcome.
Looks great > and smooths out off-axis nicely.
I messed up the colors in the graphs. For the on axis graph, the WG is the blue line. For the off axis graph, the WG is the black line.
Initial baffle idea based on DLK 1 1/2 dimensions. It's a tight fit.