Rerurn to Romy the Cat's Site
In the Forum: Playback Listening
In the Thread: Remedies the Beauty
Post Subject: Experience with DannoyPosted by Edgar= on: 10/22/2022
Howdy all,
I have been playing with the Dunnoy concept since Romy discovered it and I agree that it is a very good improvement for Tannoy bass.
Dunnoy with reverb injection is a phenomenal experience.
I have gold drivers not red but I tried both 10s and 15s in the Dunnoy configuration.
15s sound 4 times bigger than the 10s but the 10s mid bass is better (not surprising I suppose).
My observations is that the Dannoy concept makes an already very good wide bandwidth driver even wider. it pulls the Fs of the Tannoy way down without damaging its dynamics. It is a luxury to have such a big sound from such a small box.
Regarding bass integration, the passive radiator acts like a port in that it is IN phase around its Fs but OUT of phase below that. I found this makes adding another channel underneath challenging.
N-Set I think you will need to cross over waay lower, like around or below the Fs of the Scanspeak if your are considering a channel under Dunnoy.
After playing with the Dunnoy configuration I feel there are a few things I have to offer. First one is time alignment is still really important. Scanspeak should be as close as possible to the Tannoy driver and set back to try and have a similar acoustic centre. The Scanspeak still resonates a lot of MF energy and that needs to integrate that MF with the Tannoy. IMO the Tannoy does its magic because of the wonderful integration of the mid and high unit, the wonderful consistency of dynamics across the two units and over the xover frequency so I feel time alignment of the Scanspeak (or any other drivers in Dunnoy) is important. It's this reason I feel it is probably very difficult to add a mid bass driver to Dunnoy and have it be better. Adding more drivers to get bigger sound creates the problem of time aligning those drivers and that is not easy when the drivers are as physically big as they are and wide bandwith like these drivers are. Remember the Scanspeak is not filtered in this configuration.
If one needs Dunnoy to sound bigger I think going to a 15 is a good way to go. I strongly feel the Scanspeak needs to be the bottom driver as the radiator. The Fs is damn low so not much of a trade off. If one were to add more drivers to the Dannoy concept to have it sound bigger like adding the AK15 for example or adding more Tannoy drivers, I think the drivers need to share a common air spring so the Scanspeak can dampen both at the same time.
Personally I don't think adding more to the Dunnoy will achieve better. The combination of the two is amazing. Having bass like that from a Tannoy and it also being in a tiny box is just great. The way the Scanspeak rides the Tannoy to pull it way down without damaging the dynamics is a very enjoyable.
I also think reverb injection is definitely worth while. How bass hangs in the room with the reverb injection is just so inviting and attractive. Defiantly recommended.
Ed
Rerurn to Romy the Cat's Site