silicone chip 20w class a bridged

slr 5000 · 2nd March 2009, 10:02 PM

hi all
i,m thinking about building the above amp and would like to kinow if its possible to bridge it to make 40w per side by using 4x module kits
i also need it to be balanced and from what i understand (bugger all) it would be easy to set it up for balanced input if i do it this way
is this possible or am i just dreaming (as usual)

regards sheafer

slr 5000 · 5th March 2009, 10:24 PM

no takers ?
surely someone here must have some experiance with this amp

sandyK · 6th March 2009, 09:21 AM

slr 5000
I doubt that anybody would have attempted that. How do you propose to get rid of >200W of heat ?
SandyK

ttan98 · 6th March 2009, 09:49 AM

wasted energy, think globe warming think efficiency better for the earth. then use class-T.

slr 5000 · 7th March 2009, 03:20 AM

hi all
ill get rid of the heat via big heatsinks
i have 4x conrad 350mm x 150mm so thats not an issue
as for global warming im not concerned ,i care about sound quality and if i have to burn 1000w of heat to get it then so be it .
i dont buy into the whole global warming thing anyway i think its just a natural cycle of the earth .

sandyK · 7th March 2009, 04:15 AM

slr 5000

I agree with your comments about sound quality, as I have a SC15W/Ch.
However, I wonder how many members realise just how much quality sound you can get out of even a 15W/Ch Class A ?
Certainly much more than many people can comfortably use in a domestic situation,without the neighbours, or "she who must be obeyed " complaining.

SandyK

slr 5000 · 7th March 2009, 05:19 AM

hi sandy k
they will be used for driving some manger transducers in an active setup so i suppose 20w will proberbly be enough ,im just going overboard as usual

how do you find the sc 15w,ive read some good reports but i really need the balanced inputs as the whole system is ran threough a dbx 260 and i thought that using 4x modules bridged would also make it easy to configure it for ballanced inputs as well
i may be way off as usual with this assumtion though

sandyK · 7th March 2009, 05:31 AM

slr 5000
A tweaked SC 15W can easily outperform a standard SC 20W.
Manger drivers can sound very good indeed, although the ones I heard were in an open baffle as a temporary measure. I think it may have been the Class A that was pressed into service on this occasion, with quite good results for a temporary speaker lash up.
According to SC, even the SC15W is capable of 25-30W into 4ohms, but only in Class A up to 7.5W into 4 ohms.
SandyK

Luke · 7th March 2009, 05:42 AM

Quote:

wasted energy, think globe warming think efficiency better for the earth. then use class-T.

I hope you use public transport every day

slr 5000 · 7th March 2009, 06:38 AM

does this mean that the sc20 or 15 is not pure class a but a class a/b that switches after say 7 watts
hi luke
a worked slr5000 torana , a pure class a amp (nelson pass or other) and a cold can of carlton draught = heaven on earth unless your a greenie then its a toyota prios and lentiles

2nd March 2009, 10:02 PM	#1
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	silicone chip 20w class a bridged hi all i,m thinking about building the above amp and would like to kinow if its possible to bridge it to make 40w per side by using 4x module kits i also need it to be balanced and from what i understand (bugger all) it would be easy to set it up for balanced input if i do it this way is this possible or am i just dreaming (as usual) regards sheafer

6th March 2009, 09:21 AM	#3
sandyK diyAudio Member Join Date: Apr 2007 Location: Sydney	SC 20W Class A slr 5000 I doubt that anybody would have attempted that. How do you propose to get rid of >200W of heat ? SandyK

7th March 2009, 04:15 AM	#6
sandyK diyAudio Member Join Date: Apr 2007 Location: Sydney	silicon chip 20w class a bridged slr 5000 I agree with your comments about sound quality, as I have a SC15W/Ch. However, I wonder how many members realise just how much quality sound you can get out of even a 15W/Ch Class A ? Certainly much more than many people can comfortably use in a domestic situation,without the neighbours, or "she who must be obeyed " complaining. SandyK

7th March 2009, 05:31 AM	#8
sandyK diyAudio Member Join Date: Apr 2007 Location: Sydney	silicon chip 20w class a bridg slr 5000 A tweaked SC 15W can easily outperform a standard SC 20W. Manger drivers can sound very good indeed, although the ones I heard were in an open baffle as a temporary measure. I think it may have been the Class A that was pressed into service on this occasion, with quite good results for a temporary speaker lash up. According to SC, even the SC15W is capable of 25-30W into 4ohms, but only in Class A up to 7.5W into 4 ohms. SandyK

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5th March 2009, 10:24 PM	#2
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	no takers ? surely someone here must have some experiance with this amp

6th March 2009, 09:49 AM	#4
ttan98 diyAudio Member Join Date: Apr 2006 Location: Melb	wasted energy, think globe warming think efficiency better for the earth. then use class-T.

7th March 2009, 03:20 AM	#5
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	hi all ill get rid of the heat via big heatsinks i have 4x conrad 350mm x 150mm so thats not an issue as for global warming im not concerned ,i care about sound quality and if i have to burn 1000w of heat to get it then so be it . i dont buy into the whole global warming thing anyway i think its just a natural cycle of the earth .

7th March 2009, 05:19 AM	#7
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	hi sandy k they will be used for driving some manger transducers in an active setup so i suppose 20w will proberbly be enough ,im just going overboard as usual how do you find the sc 15w,ive read some good reports but i really need the balanced inputs as the whole system is ran threough a dbx 260 and i thought that using 4x modules bridged would also make it easy to configure it for ballanced inputs as well i may be way off as usual with this assumtion though

7th March 2009, 06:38 AM	#10
slr 5000 diyAudio Member Join Date: Oct 2007 Location: melbourne	does this mean that the sc20 or 15 is not pure class a but a class a/b that switches after say 7 watts hi luke a worked slr5000 torana , a pure class a amp (nelson pass or other) and a cold can of carlton draught = heaven on earth unless your a greenie then its a toyota prios and lentiles

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