Subwoofer Advice

Just my 2 cents, but placing the subs next to the Martin Logan mains may not solve your bass issues. If the lack of bass is caused by where the mains are positioned within the room, then adding subs may do little or nothing to help.

@tony1954 

Thanks Tony. I am going to try my ML PBK room correction first and maybe (hopefully) it might cure the problem. It will certainly save me a bunch of money if it does!

@mijostyn OK, I found my Martin Logan PBK (Perfect Base Kit)!

You mentioned this:

Run the program then turn the midbass down just a little and the bass up as far as it will go. Then start decreasing the bass a little at a time until things sound right to you.

As I recall there is an Automatic and Pro option for the PBK program. I don’t think the Auto program allows for any manual adjustments. Not sure about the Pro. I guess I’ll just try running and see.

You also mentioned this:

If you do a lot of listening from one listening position just keep the microphone at the listening position for all measurements. If you tend to listen more as background music then use the 5 locations as per instructions.

ML say this, but I think I’ll stick with your advice.

IMPORTANT! Even if your room has less than five listening positions, to ensure optimal sound, measurements must be taken from five different positions. Each position should be at least 2 feet (61 cm) apart. Focus on positions around listening locations.

@mijostyn I spoke with Martin Logan, 2 things:

1. The room correction software cannot be adjusted manually.

2. This is their recommendation for a sub for the 11A's: http://MartinLogan Abyss 10 Subwoofer | Audio Advice It is not a balance forced sub-woofer though (also not available in white!)

@navyachts I was led to believe the speakers had tone controls on them. This is wrong? If white is what you want then the KEFs are it. I have listened to them in a system with Harbeth P3s and they are excellent. The two 9" drivers are equivalent to one 12" driver which should match your MLs perfectly. I really like the ML balanced Force subs also, but in your instance I think they are overkill.