Do I place my sub on a concrete block

[admin_exported]

Please can someone advise . I have rel r328sub the floor is wooden with carpet on top ,do I use the concrete block with the spikes provided or do I discard the concrete block and use the spikes on the carpeted floor , please help its vibrating a lot at the moment .

 

[michael hoy]

I think a granite block would be more suitable, also make sure the sub is level and stable on it's spikes.

Something like this, should be OK.

 

[Anonymous]

Thanks , I will try the granite.

 

[sta99y]

My sub tends to slide around on my granite slab, was watching Tron Legacy which is a Bass heavy soundtrack but I could hear sub scraping as it moved on the granite, think il attach the rubber feet back on!

 

[michael hoy]

My sub tends to slide around on my granite slab, was watching Tron Legacy which is a Bass heavy soundtrack but I could hear sub scraping as it moved on the granite, think il attach the rubber feet back on!

Good point, I have mine on the rubber feet covering the spikes but never had it moving when it was on the spikes.

Must be giving it a good workout

 

[sta99y]

My sub tends to slide around on my granite slab, was watching Tron Legacy which is a Bass heavy soundtrack but I could hear sub scraping as it moved on the granite, think il attach the rubber feet back on!

Good point, I have mine on the rubber feet covering the spikes but never had it moving when it was on the spikes.

Must be giving it a good workout

Ha ha, I actually thought it could of sounded better, only just got it so needs time to settle into its surroundings and tune it so it's playing as it should. Going to attach rubber feet and give it a whirl

 

[AlmaataKZ]

The sub should not vibrate. Only the driver. Definaty not as much as to make it move or the cabinet vibration to produce sound.Possible reason the level setting on it is too high?

What settings have you got on it for level and cut off?

 

[AlmaataKZ]

The sub should not vibrate. Only the driver. Definaty not as much as to make it move or the cabinet vibration to produce sound.Possible reason the level setting on it is too high?

What settings have you got on it for level and cut off?

 

[Frank Harvey]

Slab underneath, block on top

 

[proffski]

Ah, Harvey Hi-Fi, the 1st correct reply! Mass loading the subwoofer enclosure can work wonders to the transient capabilities of the transducer. Newton's 3rd law and all that!

 

[michael hoy]

Ah, Harvey Hi-Fi, the 1st correct reply! Mass loading the subwoofer enclosure can work wonders to the transient capabilities of the transducer. Newton's 3rd law and all that!

That is all good and well, but if your sub has controls on the top, it becomes a non starter.

 

[sta99y]

I presumed it has moved as sub isn't extremely heavy, in fact I thought it was going to be bigger and heavier than it is. So are you saying to place on the granite slab then place a concrete block on top??

Setup below

Gain at 11 o'clock, dial turned to theatre, freq turned to 150htz as amp/BD crosses at 80htz and LFE switch is turned to on.

Does this sound correct? Oh phase at 0.

 

[AlmaataKZ]

This one?

Try reducing extension to 40 +/- 5, try reducing gain, try changing phase (is it set corectly? if not, the driver may be flapping too much but without producing enough volume of sound), try switching off the LFE mode. Crossover - are you sure teh amp/bd only sending frequencies below 80 tot he sub? if not, reduce crossover setting to nearer to 80 or 70. Basically, try to get the driver to work more cocmfortably, it may be too much for it - the sub should not vibrate and move around.

 

[sta99y]

This one?

Try reducing extension to 40 +/- 5, try reducing gain, try changing phase (is it set corectly? if not, the driver may be flapping too much but without producing enough volume of sound), try switching off the LFE mode. Crossover - are you sure teh amp/bd only sending frequencies below 80 tot he sub? if not, reduce crossover setting to nearer to 80 or 70. Basically, try to get the driver to work more cocmfortably, it may be too much for it - the sub should not vibrate and move around.

Yes this is the one.

I will definitely give it a try, as my CA BD player does the bass management for HD Audio it crosses over at 80htz for defo. Amp itself is set at 80htz too but I will try moving LFE switch.

Cheers

 

[Anonymous]

granite floating on Final ball bearing system