Subwoofer for Danley SH-50

[Frode]

Originally Posted by TundraLTD

If you can find a MTX T9515-04 over there just do what I did. NewToy link, I'm ending up with 4 of them. Drivers coming from all over the country

I really like your design, but it seems to be hard to source the drivers.

Frode

[TundraLTD]

Originally Posted by Frode

I really like your design, but it seems to be hard to source the drivers.

Frode

The drivers have been discontinued, I'm assuming that's why the TH-50 was as well. The Orion HCCA152 will work in the design with slight modification, but it cost a bit more

[djk]

You might look at building a pair of sealed PPSL with 12s and a Linkwitz transform to get the 20hz. A cabinet with the same footprint as the SH-50 and adjust the height as needed for net volume (I'm guessing 18"~24" would give the best height for imaging from the SH-50).

This would give minimum group delay and a pair stacked MTM style would give a stable pattern through the crossover region, and delay might not even be needed.

[Frode]

Originally Posted by djk

You might look at building a pair of sealed PPSL with 12s and a Linkwitz transform to get the 20hz. A cabinet with the same footprint as the SH-50 and adjust the height as needed for net volume (I'm guessing 18"~24" would give the best height for imaging from the SH-50).

This would give minimum group delay and a pair stacked MTM style would give a stable pattern through the crossover region, and delay might not even be needed.

Any suggestion for drivers?

Frode

[Rojoh]

I would choose the Dayton RSS-315HF (8 ohm version). Probably similar to those used by Ocean Way in some of their monitors.
25 Eliminator Daytona, 30 daytona, E-ticket - YouTube

You could also mount the drivers (PushPull) like Tannoy does in their VQ-range:

[weltersys]

Originally Posted by Rojoh

You could also mount the drivers (PushPull) like Tannoy does in their VQ-range:

Rojoh,

Push pull means having one driver magnet out, both the woofers in the picture you attached are cone out.
"V" loading as in the picture does allow the use of a pair of larger drivers in a smaller frontal area, two 15" or 18" could be mounted in a "V" with the same frontal area as an SH-50.

Art

[Rojoh]

Originally Posted by weltersys

Rojoh,

Push pull means having one driver magnet out, both the woofers in the picture you attached are cone out.
"V" loading as in the picture does allow the use of a pair of larger drivers in a smaller frontal area, two 15" or 18" could be mounted in a "V" with the same frontal area as an SH-50.

Art

Yes, You're right. I ment (but didn't explain it well ) that he could copy the the box shape, but flip one of the drivers.

I also always forget about SH-50s size. On pictures they often look so compact. One option could be something like swedish Procella does:

[djk]

"Any suggestion for drivers?"

Given you modest output requirements, and given that there will be four drivers, any half-way reasonable driver should do (really). Push-pull really reduces the distortion so that an inexpensive driver can sound quite good.

I was looking at some TC Sounds Epic 12s for a friend, they have around 22mm of x-max and are about $200 each. I don't think you need anything quite that extreme.

[Q14]

DJK
give Windyridge a shout, lost your email.

GB