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Discussion Starter · #1 ·
I recently (like last night when the amp arrived) upgraded from a HSU VTF-2 to a VMPS Large Sub (megawoofers, soundcoat and all) which I'm powering with an Adcom GFA555 bridged mono.


Now don't misunderstand this isn't meant to be a 'the HSU sucks' thread, I thought the HSU sub was good - I still do - but this new sub is in a different league. I think I needed to hear it to fully appreciate how much "better" it sounded (better of course being subjective).


I know it's not really fair to compare the two - one costs twice as much as the other by the time you get a used amp from ebay- but since I owned them next to each other I couldn't help it.


Bass on the VMPS goes deeper and louder seemingly effortlessly. I'm searching for adjectives to describe the sound, and the only one that comes to mind is 'fuller' - there just seems to be more of everything. On passages that the HSU struggled on (remember also that the room is about 5000cu ft), the VMPS handled without any sign of strain.


I haven't really cranked it yet - need to wait until the neighbours go out - but based on what I heard, it looks like the reserves are there to do so. I've been listening to music mainly (apart from the obligatory entry to toy story :D ) and it sounds great to me. No hint of booming, no noticeable delay, just music.


Like I said, for the price difference, I expected an audible difference. I was surprised at just how much of one I heard. I was blown away by the HSU when I got it (it replaced a really cheap sub - KLH if I remember aright). This seems to be a step up of almost the same magnitude.


I guess you can chalk me up as a satisfied customer...
 

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As a VMPS dealer, I hear this quite often about the Larger.


Just a reminder, there is a small amount of "putty" in the center of the passive radiator (the woofer that faces down) and it generally comes "over dampened".


You might find the bass a little more responsive and tighter if you remove about a "marble sized" amount. Make sure and save this amount in a plastic bag in case you need it later.


This tuning feature is slightly more important to music and accuracy, but this initial "marble" is about right to start. Then don't remove any more for 30 days or until you think it is well broken in.


Enjoy the Bass. I just ordered my second one so I can run stereo subs.
 

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Discussion Starter · #3 ·
I already had taken out slightly less than you suggest - I tried a bit more, but it just didn't sound right. In fact it sounded plain wrong.


After a test vs the start of LOTR I also changed it to run unbridged - 1 channel to each speaker (thanks to the $5 radio shack y splitter I picked up at lunchtime).


Let's just say that when the ring dropped, the distortion light on the amp came on and stayed on for a couple of seconds, and I thought oops, time to try another approach...


I get a little more headroom in stereo, not as much as I'd have liked of course, so to paraphrase the chap in Jaws 'I think I'm gonna need a bigger amp' :p


Anyone seen discount coupons for QSC :D
 

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Quote:
Originally posted by bioforce
"He just hears what he wants to hear, and disregards the rest" Pete Townshend
I thought that was Paul Simon.
 
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