Active X-over & Bi-amp

argonrepublic · 14th June 2005, 03:10 AM

I still have active Studio Monitors. I don't like them. They are missing things. Not "colour" but actual elements like the decay of a xylophone or the depth of a room.
I originally planned on replacing the drivers and realized I'd have over $1000 invested in not so nice monitors.
My lastest Idea is too buy 1 ART SLA-1 amp (100 Watts rms/ch), an SLA-@ (200 Watts/Ch) and an an ART 311 2 Way active X-Over.
The amps have good reviews from audiophiles and there are some known mods.
The outputs of the X-over are unbalanced which may be good to keep phase between drivers. I would like to finish by maybe buying some matched Morel drivers.
Is 100Watts for tweeter and 200Watts for 8" woofer a good combination?

killerfishes · 14th June 2005, 03:20 AM

same sensitivity same power is what i would go for

AndrewT · 14th June 2005, 12:32 PM

Hi,
if you use unmatched amps for the bass & treble you then need to place the amps between the speakers with long and potentially expensive cables to each.
You are throwing away one of the active advantages - very short cables.
Alternatively go monoblock with matched half pairs located right at the terminals, maybe even missing out the terminals and connect cables from drive unit direct to amp outputs.
Look at sensitivity and dbV out of the amps. Add the two together to compare SPL of the drivers. The treble in general do not consume lots of power (ribbons and others are exceptions) but often use the same volts drive due to very short rise (and fall) time of transients.

Bill Fitzpatrick · 14th June 2005, 04:39 PM

Assuming 2KHz crossover, 100w for the tweet is overkill but, of course, it won't hurt. You didn't mention which monitors you are currently using.

Madmike2 · 15th June 2005, 11:02 AM

If they are Rokit-8's i can feel your pain buddy.

14th June 2005, 03:10 AM	#1
argonrepublic diyAudio Member Join Date: Apr 2005 Location: Simcoe Ont	Active X-over & Bi-amp I still have active Studio Monitors. I don't like them. They are missing things. Not "colour" but actual elements like the decay of a xylophone or the depth of a room. I originally planned on replacing the drivers and realized I'd have over $1000 invested in not so nice monitors. My lastest Idea is too buy 1 ART SLA-1 amp (100 Watts rms/ch), an SLA-@ (200 Watts/Ch) and an an ART 311 2 Way active X-Over. The amps have good reviews from audiophiles and there are some known mods. The outputs of the X-over are unbalanced which may be good to keep phase between drivers. I would like to finish by maybe buying some matched Morel drivers. Is 100Watts for tweeter and 200Watts for 8" woofer a good combination?

14th June 2005, 12:32 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, if you use unmatched amps for the bass & treble you then need to place the amps between the speakers with long and potentially expensive cables to each. You are throwing away one of the active advantages - very short cables. Alternatively go monoblock with matched half pairs located right at the terminals, maybe even missing out the terminals and connect cables from drive unit direct to amp outputs. Look at sensitivity and dbV out of the amps. Add the two together to compare SPL of the drivers. The treble in general do not consume lots of power (ribbons and others are exceptions) but often use the same volts drive due to very short rise (and fall) time of transients. __________________ regards Andrew T.

15th June 2005, 11:02 AM	#5
Madmike2 diyAudio Member Join Date: Apr 2005 Location: Toronto	If they are Rokit-8's i can feel your pain buddy. __________________ Persistence is better then intelligence. Unless persistence kills you.

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14th June 2005, 03:20 AM	#2
killerfishes diyAudio Member Join Date: May 2005 Location: Usa	same sensitivity same power is what i would go for

14th June 2005, 04:39 PM	#4
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	Assuming 2KHz crossover, 100w for the tweet is overkill but, of course, it won't hurt. You didn't mention which monitors you are currently using.

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