need help with SANSUI AU-X911DG

[mitro54]

Damn.. Can someone suggest a good cheap amplifier what can handle idk 15inch subwoofer, my uncle made it in 90' i can say its so ****ing good that theres no other i have seen with anyone, the bass drops like beast jumps. Idk know about ohms so can u guess it for me or if u know the speaker itself.

 

[Hyperion]

Sounds like you need to be in pro-amp territory - Crown ?

 

[pete_mac]

Sounds like you need to be in pro-amp territory - Crown ?

Indeed - a normal integrated amp really won't suffice.

You'll also need a suitable low-pass crossover too - don't run the subwoofer full-range.

 

[JOMARK911]

911 can handle it just fine. This is not the problem. His problem is he doesn't a thing of electronics and 911dg is having the well known problem with the dams.
A qualified tech can do it .



Just as simple as that.
The 15inch won't scare 911 not a bit. Even if it's a 4ohm driver. 911 delivers 160w/4ohms per channel.

 

[pete_mac]

911 can handle it just fine. This is not the problem. His problem is he doesn't a thing of electronics and 911dg is having the well known problem with the dams.
A qualified tech can do it .

Just as simple as that.
The 15inch won't scare 911 not a bit. Even if it's a 4ohm driver. 911 delivers 160w/4ohms per channel.

It will really depend upon exactly how hard the OP intends to drive the subwoofer.

Using a domestic hifi amp for full-range music at elevated levels (which the Sansui can do well) is FAAAAR different to using it to deliver sub-80hz at elevated levels - it is far more taxing on a domestic amplifier - it is simple physics at play. The current delivery requirements are very different, and the heatsinking in the Sansui really isn't sufficient for dedicated subwoofer duties IMHO. Thermal management is key if the OP wants to use this amp to drive subwoofers.

You'll definitely need the aforementioned crossover to be added to the signal path, and a small fan to help direct air through the chassis of the Sansui to assist those heatsinks. I've been down the road of using a hifi amp for PA duties (due to the unavailability of a pro audio amp at the time) and it's quite amazing how effective a 140mm fan blu-tacked to the top of the casing in a draw-through arrangement can keep temperatures under control.