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Author Topic: Tweaking out the Randall iso cab  (Read 5642 times)

Plenum n Heather

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Tweaking out the Randall iso cab
« on: March 17, 2013, 01:38:48 AM »
I love my iso cab, I really do. But, as we all know, a boosted 4 or 5W amp is SCREAMING loud in an apartment and 29dB of cut is not all that much in a busy household, let alone one in an average NYC apartment.

There was a Keith Merrow video in which he said a friend of his loaded his Randall iso cab with Auralex foam and it really improved the sound. I thought, why not? And if it cuts off some of the leakage from the cab, even better!

So after hung ga class today, I stopped at the Guitar Center on 14th St and picked up two 2'x4' sheets of Auralex 2" Studio Wedge and a can of Auralex Foamtak adhesive. The adhesive turned out to be unneeded, as the foam fits so tight inside the cabinet that I didn't need to glue it in ($25 wasted).

After making a few measurements, I cut up 5 pieces and lay them inside the cabinet. Of course, acoustically, I noticed a vast change in the cabinet. It went from sounding like a very pingy box to sounding much more substantial. I then cut 5 more pieces, slightly smaller, and affixed them into the first layer.

End result: It cut the leakage down a good 50% I would say.

Playing the Champ with the volume at 9 o clock, you can barely hear the amp with the cab sat right next to you. Boosted, which makes the amp WAY louder, it did sound loud -- but only about as loud as someone watching a movie on the hifi -- not nearly as loud as before.

Placing an SM57 into the cabinet and mic'ing it through my Focusrite mic preamp, I conduced a very quick test and thought it sounded VERY good, indeed.

So, overall, I am very happy and glad I made the plunge. Just gotta find where I put my GRAMMA now ... :)






MDV

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Re: Tweaking out the Randall iso cab
« Reply #1 on: March 17, 2013, 06:14:53 PM »
Cool.

Tellboy

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Re: Tweaking out the Randall iso cab
« Reply #2 on: March 17, 2013, 06:58:02 PM »
As it was virtually impossible to get a Randall Iso cab in the UK, I got an AxeTrak a couple of years ago. Fairly happy with it but like the idea that with the Randall you can get easy access inside and change out mike and speaker. Had heard that the Randalls could still be fairly loud but you have obviously sorted that! No doubt your charming daughter has noticed the improvement  :)
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Plenum n Heather

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Re: Tweaking out the Randall iso cab
« Reply #3 on: March 17, 2013, 07:57:42 PM »
If there is a camera out in the house, Violet knows about it!! :)

TheyCallMeVolume

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Re: Tweaking out the Randall iso cab
« Reply #4 on: March 18, 2013, 01:20:38 PM »
Glad you like it.