Help with Beyma design

Pooley · 28th June 2009, 11:49 PM

I'm still fairly new to this game and am looking for a bit of advice.

These plans tick the boxes as the cabs are compact and loud, however I would like to use them for home listening (with a single sub) when not out on event use. Will only using a small fraction of their power handling sacrifice sound quality? This would probably be the nail in the coffin and I'll look to a lower power design.

If this makes no difference to the audio then I'm going to get my hands on a DCX 2496 and play with different crossover types (working out beforehand which ones I can make with available components) as I'm unhappy with both the crossover having a lower power than the woofer (600W and 700W) and the slope\cutoff. What sort of power components will I need? I know nothing about power handling of inductors and I'll keep the voltage across the capacitors in check. For attenuating resistors what power is needed? Looking at commercial 600W jobs with supplied attenuation there is now way that the resistors can handle 600W, so what is the required percentage of this power for a xover around 1Khz?

Thanks for any responses, I've come a bit unstuck here. Can't seem to find much info on high power passive xovers (I only want to use one amp).

Tom

PeteMcK · 29th June 2009, 04:56 AM

http://www.falcon-acoustics.co.uk/pd...%20Upgrade.pdf

http://www.tomshardware.com/forum/49...ower-crossover

Pooley · 29th June 2009, 09:10 AM

Thanks mate, solved all my crossover questions in one fell swoop!

Is running a 700w driver at 100w going to degrade the sound quality significantly?

Tom

PeteMcK · 29th June 2009, 10:25 PM

I would think that there would be lower distortion at low levels
(actually, at home listening levels you likely to be using only ~ 1 watt)

PS, for reliability's sake, you should seriously consider going active & using 2 amps, you don't want your system to kark it in the middle of a gig...

Pooley · 29th June 2009, 10:56 PM

I like to do my critical listening at loud volumes

I do seem to be swinging a little towards going active, I'll wait and see the complexity/number of components I'll need to do both sides. It may turn out that an extra amp may be worth the cost/time difference

Thanks again

28th June 2009, 11:49 PM	#1
Pooley diyAudio Member Join Date: Jun 2008	Help with Beyma design I'm still fairly new to this game and am looking for a bit of advice. These plans tick the boxes as the cabs are compact and loud, however I would like to use them for home listening (with a single sub) when not out on event use. Will only using a small fraction of their power handling sacrifice sound quality? This would probably be the nail in the coffin and I'll look to a lower power design. If this makes no difference to the audio then I'm going to get my hands on a DCX 2496 and play with different crossover types (working out beforehand which ones I can make with available components) as I'm unhappy with both the crossover having a lower power than the woofer (600W and 700W) and the slope\cutoff. What sort of power components will I need? I know nothing about power handling of inductors and I'll keep the voltage across the capacitors in check. For attenuating resistors what power is needed? Looking at commercial 600W jobs with supplied attenuation there is now way that the resistors can handle 600W, so what is the required percentage of this power for a xover around 1Khz? Thanks for any responses, I've come a bit unstuck here. Can't seem to find much info on high power passive xovers (I only want to use one amp). Tom

29th June 2009, 04:56 AM	#2
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	http://www.falcon-acoustics.co.uk/pd...%20Upgrade.pdf http://www.tomshardware.com/forum/49...ower-crossover __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

29th June 2009, 10:25 PM	#4
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	I would think that there would be lower distortion at low levels (actually, at home listening levels you likely to be using only ~ 1 watt) PS, for reliability's sake, you should seriously consider going active & using 2 amps, you don't want your system to kark it in the middle of a gig... __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

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29th June 2009, 09:10 AM	#3
Pooley diyAudio Member Join Date: Jun 2008	Thanks mate, solved all my crossover questions in one fell swoop! Is running a 700w driver at 100w going to degrade the sound quality significantly? Tom

29th June 2009, 10:56 PM	#5
Pooley diyAudio Member Join Date: Jun 2008	I like to do my critical listening at loud volumes I do seem to be swinging a little towards going active, I'll wait and see the complexity/number of components I'll need to do both sides. It may turn out that an extra amp may be worth the cost/time difference Thanks again

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