Subwoofer to go w/Martin Logans

Andy,


I would recommend the Velodyne servo controlled subs.


My two ULD-18's integrate very well with my Monoliths. Very musical.



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Jonathan

Shane,

Have you heard the 18" Bag End?


The svs does not look very impressive according to diagrams, also stating 190 watts. You say the Bag End boasts plenty but does not perform.


My dedicated theatre structure out back shakes beyond belief. I have it set to less then 1/4 and it is so tight, powerful and flat out violent when it needs to be. How could you begin to say it does not perform. It blows the socks off of my other subs: Velodyne 15" (2 of them at the same time), Sunfire signature, and any others I've heard except the Krell and Wilson.


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Silence is overrated!



>>>Shane,

Have you heard the 18" Bag End? <<<



I have, I spent >$1000 on an INFRA a couple years ago. Nice unit...ended up using it as a amp stand before I sold it for what I thought it was worth...$350 to a good friend.


Sealed box, off the shelf emminence driver...with crappy accordian surround. You're looking at about 4.5mm of linear Xmax from the driver, a resonant freq. of about 70hz for the entire thing. This means, the *elf* stuff has to EQ the signal 12dB/octave starting at 70hz to maintain relatively flat response <70hz. Ok, so that's about 20dB of EQ at 20hz...talk about castrating the amp headroom !


KEELE reviewed the INFRA for audio a while back...basically, you'd need 4 INFRAs to macth the clean output of a single HSU TN20.


Is the INFRA an *ok* subwoofer for low level music? Yes.

Can the INFRA kick >35hz? Yes.


Does the INFRA have the capability to produce the first octave(16-32hz) loudly and cleanly?....absolutely not.


>>>The svs does not look very impressive according to diagrams,<<<



good thing bagend has such impressive diagrams then...



>>> also stating 190 watts. You say the Bag End boasts plenty but does not perform.<<<



190w, correct. More than enough to perform well, I can assure.



>>>My dedicated theatre structure out back shakes beyond belief. I have it set to less then 1/4 and it is so tight, powerful and flat out violent when it needs to be. How could you begin to say it does not perform.<<<



The INFRA isn't capable of producing anything <32-35hz loudly and cleanly. This is a well documented fact...dictated by it's outdated *elf* electronics, and it's off the shelf driver.




>>> It blows the socks off of my other subs: Velodyne 15" (2 of them at the same time), Sunfire signature, and any others I've heard except the Krell and Wilson.<<<



There's no point in debating personal preference...assuming the VEL 15s were operating correctly, and calibrate/placed for optimal performance...your conclusion seems to indicate that you have a preference for a lot of distortion with your low bass. That's your choice, it's a free country. Which model VELs...F1500 or FSR/HGS 15s?



TV

The Aerial subs are very good and i would suggest you audition a pair. You can wire the .1 info as follows:


First to get the mains working bring the processor left channel out into the left side SW12 on the line in. Set the xover at say 70. Then set the high pass xover at a bit less, say 65. next take the high pass out into the amp for the front left channel. Take the speaker wire from the amp to the left front speaker.


Do the same to the right side. This will give you the fronts wired in tandem with the subs.


Then take another interconnect from your .1 out into the remaining line in on the left SW12 (you only used one above). Then take an interconnect from the LINE OUT (not high pass but line out) and run it into the open LINE IN on the right hand SW12.


You will probably have to fiddle around with the xover in your processor for thr .1 channel. I have found that some movies with this setup cause too much bass and by changing the xover downward it cuts some out and does not overload the subs.


I think these subs are very good.




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Chuck Traywick

Kitty Hawk, NC

This goes to show that everyone in audio is chasing their tail. One of you preferred the Volodyne 15" to the Bag End 18"


I owned 2 F15 Velodynes at the same time, and the Bag end is so much better. But yet you feel the need to tell me I am hearing distortion, but don't know any better. Hey, It just sounds better. What can I say.


An installer friend of mine who also sells Revel, and other high end subs, will always include Bag End as a default. Why, because they perform.


By the way, to add to my favorite bass, the Revel sub sounded great.


So your opinions are not: "Audio Truth". The Bag End may have been too powerful for your size room, or whatever the reason may have been. This sub is also pushed by Christopher Hansen and many other high end stores who could gouge the customer for more money, but less perfomance.


Bag End rocks. Litterally.


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Silence is overrated!