lakshmant
Agent
- Joined
- Feb 25, 2004
- Messages
- 46
i was just going through the MK and other THX speaker manufacturers pages
this is what i found out you can use this for buying speaker with optimum woofer output.
for this i calculated the total woofer area of each channel ,
i:e if front have 2*5.25 inch woofers =10.5 inches.
but for a single channel as reference
so with that in mind i did some math(i am weak at it though)
for the THX select 750 system from MK the ratios of the woofer size of the sub vs a single stage channel and of the sub against surroudn and stage are as follows assuming LCR is same .
surround to stage speaker is 1:2
surround to sub woofer size ratio is 1:2.28
single stage channel to sub woofer ratio is 1:1.14
so to get a balanced coverage of bass as per THX yu will need the front LCR to have a woofer area of 1.2 times the surround channel and the sub 2.4 times the surround channel.
ex yu have a 5.25 inch woofer cone for surround then for THE total of each woofer area of each LCR speaker must optimally be 2 times the surround speaker cone size is 2*5.25 =10.5 inch
then the sub cone size when related to LCR is 1:1.14 times so the sub woofer size should be 1.14*10.5=app 12 inches.(11.97 precisely)
surround to subwoofer cone is 5.25*2.28= is again 11.97.
this would help as the THX speaker perform bass output in theory properly at 2000 cubic feet
i will just check about THX ultra2 and also post the ratios
this is what i found out you can use this for buying speaker with optimum woofer output.
for this i calculated the total woofer area of each channel ,
i:e if front have 2*5.25 inch woofers =10.5 inches.
but for a single channel as reference
so with that in mind i did some math(i am weak at it though)
for the THX select 750 system from MK the ratios of the woofer size of the sub vs a single stage channel and of the sub against surroudn and stage are as follows assuming LCR is same .
surround to stage speaker is 1:2
surround to sub woofer size ratio is 1:2.28
single stage channel to sub woofer ratio is 1:1.14
so to get a balanced coverage of bass as per THX yu will need the front LCR to have a woofer area of 1.2 times the surround channel and the sub 2.4 times the surround channel.
ex yu have a 5.25 inch woofer cone for surround then for THE total of each woofer area of each LCR speaker must optimally be 2 times the surround speaker cone size is 2*5.25 =10.5 inch
then the sub cone size when related to LCR is 1:1.14 times so the sub woofer size should be 1.14*10.5=app 12 inches.(11.97 precisely)
surround to subwoofer cone is 5.25*2.28= is again 11.97.
this would help as the THX speaker perform bass output in theory properly at 2000 cubic feet
i will just check about THX ultra2 and also post the ratios