What amp for tweeter only in active setup ?

Groundloops · 7th September 2006, 12:47 PM

I wonder what kind of amp to use to drive the tweeters only in an all active 2-way setup ?

Speakers are Jim Griffins MiniMonitors (Jordan JX92s / Aurum Cantus G2Si crossed at 3 kHz with 18 db/oct.) For the lower octave I use a pair of MyRef Rev C monos, xover is a heavily modified Behringer DCX2496.

What would you do - just use another amp that comes along ?

kepa1 · 7th September 2006, 01:18 PM

Talking about tweeters in active filtered set ups, I've read about a French guy pluging his Fostex FT66 straight, in his active filter, you read good... no amplifier!

I've not tested it yet, especially because my DCX is broken right now, but I'll definitely give it a try. Apparently you need high sensitivity tweeters (>100db) to achieve a convenient sound pressure level.

Alternatively, I'd add another amp of the same manufacturer.

Bye

Groundloops · 8th September 2006, 11:07 AM

Nice suggestion, but I´m not sure if a tweeter with 6 ohms nominal impedance is an adequate load for an opamp.

AndrewT · 8th September 2006, 12:40 PM

Hi,
6ohm is too low even for a line driver designed to push big current into a pair of 50ohm terminated coax.

Nuuk · 8th September 2006, 05:57 PM

This may be of interest!

Leolabs · 9th September 2006, 01:22 AM

Quote:

Originally posted by SmellOfPoo
I wonder what kind of amp to use to drive the tweeters only in an all active 2-way setup ?

How about LM1875???

7th September 2006, 12:47 PM	#1
Groundloops diyAudio Member Join Date: May 2004 Location: Hamburg / Northern Germany	What amp for tweeter only in active setup ? I wonder what kind of amp to use to drive the tweeters only in an all active 2-way setup ? Speakers are Jim Griffins MiniMonitors (Jordan JX92s / Aurum Cantus G2Si crossed at 3 kHz with 18 db/oct.) For the lower octave I use a pair of MyRef Rev C monos, xover is a heavily modified Behringer DCX2496. What would you do - just use another amp that comes along ?

8th September 2006, 05:57 PM	#5
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	This may be of interest! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

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7th September 2006, 01:18 PM	#2
kepa1 diyAudio Member Join Date: Apr 2004 Location: Paris	Talking about tweeters in active filtered set ups, I've read about a French guy pluging his Fostex FT66 straight, in his active filter, you read good... no amplifier! I've not tested it yet, especially because my DCX is broken right now, but I'll definitely give it a try. Apparently you need high sensitivity tweeters (>100db) to achieve a convenient sound pressure level. Alternatively, I'd add another amp of the same manufacturer. Bye

8th September 2006, 11:07 AM	#3
Groundloops diyAudio Member Join Date: May 2004 Location: Hamburg / Northern Germany	Nice suggestion, but I´m not sure if a tweeter with 6 ohms nominal impedance is an adequate load for an opamp.

8th September 2006, 12:40 PM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, 6ohm is too low even for a line driver designed to push big current into a pair of 50ohm terminated coax.