Any unusual projects in the pipeline?

[Made in 1968]

Barry:
I was glad to see the back of my 'DM2a' Big obstrusive things that gave me nothing a pair of stand mounters could, which were the 'D5'..

[Barry]

Barry:
I was glad to see the back of my 'DM2a' Big obstrusive things that gave me nothing a pair of stand mounters could, which were the 'D5'..

I really like the DM2as. I use them mainly for AV duties in the TV room, powered either by a class D amp, or a Quad 520. Yes they are big and I would prefer something smaller (maybe B&W DM5 or Rogers LS7), but they only cost me £50.

[Bencat]

Sorry I think you have missed what I am doing . The bottom speaker will not have its tweeter connected so it will be producing no sound at all . Only the bass unit and due to od way these drivers are attached to the cabinet I will be able to make the bottom speaker have the bass unit at the top and the tweeter on the bottom which will bring the two bass drivers closer together which should help with intergration . I know that a single speaker as an active sounds excellent and if when I do the set up the second pair does not improve things all I need to do is disconnect it and go back to a single unit . It will be fun in a strange masochistic way given how awful I am at the physical elements of any build and hope fully it will be able to produce some sweet music when finished.

Stacked Quads are one example of when this idea can work as when I have heard a pair (Quad ?) they have always sounded wonderful .

[Macca]

Sorry I think you have missed what I am doing . The bottom speaker will not have its tweeter connected so it will be producing no sound at all . Only the bass unit and due to od way these drivers are attached to the cabinet I will be able to make the bottom speaker have the bass unit at the top and the tweeter on the bottom which will bring the two bass drivers closer together which should help with intergration . I know that a single speaker as an active sounds excellent and if when I do the set up the second pair does not improve things all I need to do is disconnect it and go back to a single unit . It will be fun in a strange masochistic way given how awful I am at the physical elements of any build and hope fully it will be able to produce some sweet music when finished.

Stacked Quads are one example of when this idea can work as when I have heard a pair (Quad ?) they have always sounded wonderful .

Thing is they are not bass units as such but both are handling 95% of the output so you are going to get cancellation and reinforcement and so on. I think you'd get a better result by putting a high pass filter on the lower unit so it only delivers bass, essentially making a 2 and a half way speaker with the upper unit doing bass and mids and the lower just the bass below, say, 200 Hz.

[Made in 1968]

I really like the DM2as. I use them mainly for AV duties in the TV room, powered either by a class D amp, or a Quad 520. Yes they are big and I would prefer something smaller (maybe B&W DM5 or Rogers LS7), but they only cost me £50.

The 'D5' were better than the 'DM5'.. Same with the 'DM4' i couldnt get on with those..

[Barry]

Thing is they are not bass units as such but both are handling 95% of the output so you are going to get cancellation and reinforcement and so on. I think you'd get a better result by putting a high pass filter on the lower unit so it only delivers bass, essentially making a 2 and a half way speaker with the upper unit doing bass and mids and the lower just the bass below, say, 200 Hz.

Yes that would be better. The stacked DM2s I heard really did sound odd, regardless of which way around they were stacked.

Stacked Quad (57s) work because the bass, mid and treble panels are effectively doubled (in height) in a seamless manner. However the doubling of the height of the narrow treble panel does cause the beamwidth in the vertical plane to effectively be halved, so exacerbating the 'letter box' effect.

[Pharos]

Yes I agree.

[337alant]

Only unusual one for me is a Mains DC blocker DC03 from Peranders Group buy thread
https://www.diyaudio.com/forums/grou...nsformers.html


Alan