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Old 18th February 2013, 05:58 PM   #211
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Originally Posted by northernsky View Post

in case of combination with a tweeter such as Griffin minimonitors, EAD suggests the cheaper E100 since the improvement of the E100HD should only be on the HF

thanks again! I had a quick look at the 130and 170 drivers and thought 'eugh!' so perhaps youre correct!
Balancing the things I must do, with the things I'd like to do...This is a skill (or a luxury) amongst many that I do not possess.
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Old 5th March 2016, 10:49 PM   #212
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first sorry for resurrecting a very old thread but has anyone biamped the mini-monitors and what crossover setting would you use i know say 3000 but what slope and what about sub crossover around 70 and again what slope?

thanks for the time, Dustn
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Old 6th March 2016, 05:03 AM   #213
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I built these speakers several years ago but based on later experience I would suggest this tweeter - all agreed it sounded more natural.

I would suggest 18db / octave but what ever rolloff you use with ribbons you ABSOLUTELY MUST HAVE A FILM CAP IN SERIES WITH THE TWEETER - otherwise you are presenting the amps with a full short circuit.

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Old 6th March 2016, 01:07 PM   #214
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I suggest that you use the mini-monitors 'as is' with their internal crossovers intact. An active crossover can be used between the subwoofer and with the mini-monitors treated as satellite speakers.

I have used this method in my own system. My subwoofer has a plate amplifier and accept line L and R line level inputs from a preamp. The plate amp has an internal crossover which splits the signal between the subwoofer and line level outputs to the power amp for the satellite speakers. The subwoofer crossover has adjustments for the crossover frequency and gain for the sub. The preamp controls the overall volume level once you balance the subwoofer volume to your in-room sound level between it and the satellites.

You can implement a similar configuration with an active crossover processor. You would use separate amps for the bi-amp pair (subwoofers and satellites). The preamp would control the overall volume level while the processor would give you the ability to adjust the in-room balance between the subs and satellites. Some processors offer flexibility to alter time delay between speakers and in-room EQ for the system.

As pointed out by mikelm, if you choose to not use the mini-monitor crossovers, you must take precautions to protect the ribbon tweeters and your amplifiers. Only if you have a crossover processor and amplifiers that self mute on power up and power down cycles can you assure adequate protection. Addition of large value series capacitors are recommended for protection of the tweeters and your amps.

The passive crossovers in the mini-monitors not only perform the crossover function of the mini-monitor, they act to implement baffle step compensation and gain balance between the woofer and tweeter.

Last edited by Jim Griffin; 6th March 2016 at 01:28 PM.
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Old 6th March 2016, 02:03 PM   #215
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thanks for the reply's guys! Jim do you have any thoughts on the fountek ribbons? I tend to stick with known good but if a few people tell me they are better than the g2si I could be swayed.
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Old 6th March 2016, 07:08 PM   #216
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While Fountek has a good line of ribbons, the Aurum Cantus models are what I have used for several designs over some 12 years now. The G2Si is still available so I would not use a substitute ribbon.
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