A8X vs S8R

30/4/2011

8 Comments

I did a frequency sweep of the Adam A8X, and the Quested S8R studio monitors recently:

Can you tell which is which?

8 Comments

jayjo

4/6/2011 03:21:06 pm

So... Which is which..???

Richard

26/6/2011 08:17:46 am

Ok, time's up (and jayjo wants to know the answer). The blue graph is the S8R plot. It shows a better midrange response (200Hz to 1kHz), but the A8X is far smoother from thereon up, due to its Ribbon tweeter. Also noticeable is high frequency drop-off starting below 15kHz for the S8R. The uneveness in the low ƒ response is due to the room modes.

jayjo

26/6/2011 07:03:28 pm

Thats what I expected... thanks alot!

Nuno

2/9/2011 09:51:43 pm

Hi Richard, i have a pair of a8x... but i feel a hole on the 100 hz.... below at 90 hz is ok... and above...150 too(sometimes loud)... i don´t know.. what is...

how can i solve this???

Richard

6/9/2011 03:15:40 am

At frequencies below the Schroeder frequency room modes come into play. The room dimensions cause standing waves that will give cancellations and reinforcement at bass frequencies . This will be why you have a dip at 100Hz, and a peak at 150Hz. Solutions are: use a room with acoustically designed dimensions, choose a different room (you might get lucky), move the position of the speakers (again you may get lucky), or install bass traps (usually in the corners) to attenuate the boomy frequencies.

Richard

6/9/2011 03:19:59 am

There is another approach too: a crude way to fix the problem is to use a 1/3 octave graphic equaliser.

Nuno

10/9/2011 10:32:43 pm

Tks Richard... i´ve already email adam audio and seems they have the same opinion.... problems with room acoustics....

Rameron

12/5/2012 04:39:33 am

Hi... Have you some problema with a8x mid range freq in the mix??
Manu reviews talk about this...
Thanx

A8X vs S8R

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