Is it Possible to Change the Crossover Setting on a Sony STR-DE495 Reciever?

[s162216]

Hi,

I have a Sony STR-DE495 reciever and I have been trying to find out if it is actually possible to change the crossover setting.
If you look at the manual (see attached picture), it seems to say you can adjust it although it is not mentioned anywhere else and I have looked in all the menu's and cannot find a trace of that sort of option anywhere.

What do you all think?

(BTW, the reason I want to do this is for a special Earthquake' sensurround project reading the control tones for the rumble generator off the LFE track as that is all the rumble is on the DVD, so the crossover needs to be set as low as possible so that not much of the main soundtrack is redirected to the sub unless the relavent control tone is active - look up sensurround if you don't have a clue what I am on about)

 

[lsiberian]

Hi,

I have a Sony STR-DE495 reciever and I have been trying to find out if it is actually possible to change the crossover setting.
If you look at the manual (see attached picture), it seems to say you can adjust it although it is not mentioned anywhere else and I have looked in all the menu's and cannot find a trace of that sort of option anywhere.

What do you all think?

(BTW, the reason I want to do this is for a special Earthquake' sensurround project reading the control tones for the rumble generator off the LFE track as that is all the rumble is on the DVD, so the crossover needs to be set as low as possible so that not much of the main soundtrack is redirected to the sub unless the relavent control tone is active - look up sensurround if you don't have a clue what I am on about)

Knowing your electronics talent. I suggest you build your own low-pass filters

 

[MDS]

If the xover frequency is selectable, it will likely be in the speaker setup menu where you specify 'small' or 'large' for each speaker.

If such an option does not exist, then the receiver likely has a fixed xover and if you set SW to Yes, it will send the bass below that fixed xover to the sub (which would imply that setting SW to Yes automatically sets all other speakers to 'small').

 

[s162216]

Thanks, I was just thinking about for some reason how when I have actually built the sub we spent so long discussing, how I would get the 'rumble' effect from an Earthquake DVD as the 25Hz and 35Hz tones are all the rumble actually are on the DVD although in the cinema you never heard them as they activated the control box. I just had a sudden burst of inspiration.

Basically, if theres a 25Hz tone, the rumble generator is activated and its loudness varied by the voltage. If theres a 35Hz tone, the main soundtrack is redirected to the sub, again varied by the voltage. If both are on however, then the main soundtrack and the rumble generator are turned on, but the volume of the main soundtrack is increased by up to 8dB to immerse you in the sound. This was originally called step gain by MCA.
Basically its going to be a hugh pile of bandpass filters, opticouplers as they switch faster than relays and are silent and somehow a preamplifier varied by the voltage across it when both tones are so to get the step gain.

I am going to be building the enclosure for the sub in a few weeks as I have 6 weeks off school at the moment.