Author Topic: Time for some 8in servo subs to go with the MG10/QR's  (Read 8465 times)

Offline HAL

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Re: Time for some 8in servo subs to go with the MG10/QR's
« Reply #30 on: October 23, 2023, 12:21:54 PM »
Nick,
These are basically the same as the original HX300 servo amps.  The circuits are moded to work with the 8in OB subs instead of the 12in OB subs.

This time Danny redesigned the 8in sub woofer to be slightly higher impedance so the amp could drive 4x8in instead of just 3. 

The other difference is extending the LF response to 30Hz and using the dspNexus 2x8 to control the low frequency extension.  It was around 40Hz before.  Will have to wait until the servo drivers are mounted in the H-Frames to adjust the response so they do not bottom.   

Offline Nick B

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Re: Time for some 8in servo subs to go with the MG10/QR's
« Reply #31 on: October 23, 2023, 12:53:51 PM »
Nick,
These are basically the same as the original HX300 servo amps.  The circuits are moded to work with the 8in OB subs instead of the 12in OB subs.

This time Danny redesigned the 8in sub woofer to be slightly higher impedance so the amp could drive 4x8in instead of just 3. 

The other difference is extending the LF response to 30Hz and using the dspNexus 2x8 to control the low frequency extension.  It was around 40Hz before.  Will have to wait until the servo drivers are mounted in the H-Frames to adjust the response so they do not bottom.

Thanks, Rich.

Great progress for you so far. This Wednesday, I’m having honeycomb blinds installed behind my system. Have had an uncovered window there since I moved in last November. That’s the first step to integrate the subs. Will be using REW with the mic for testing that you suggested.

Nick
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Offline HAL

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Re: Time for some 8in servo subs to go with the MG10/QR's
« Reply #32 on: October 23, 2023, 06:23:13 PM »
Nick,
Glad you are making progess on the sub setup soon.

Keep us posted on your REW measurements.  Always interesting to see different room responses.