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-   -   VTF-15H MK2 - More Powerful Amp? (http://forum.hsuresearch.com/showthread.php?t=96175)

acepaul January 6th, 2022 8:47 AM

VTF-15H MK2 - More Powerful Amp?
I have been running two VTF-15H MK2 subs for a while now and am wondering if anybody has tried to upgrade the amp? We know that the 4 ohm driver can take 600 w RMS, 2000 w peak but can it take more RMS power? Would be nice to have some more detailed specs on the driver. :)

acepaul January 21st, 2022 7:17 PM

Update: I bypassed the BASH amp and am powering the driver of one sub with a Marani amp that has about 2200 watts RMS per channel. I have had these VTF-15H MK2's for over five years so I know how they sound. The bigger amp is amazing! It is just a bit louder but the control it has over the driver is much greater than the stock amp. Bass is much more defined and tactile. Have to EQ a bit with the Marani DSP to protect the driver from being overdriven.

I have a special high power driver that I'm having made to test against the stock driver. It has two voice coils vs the HSU single coil. Will be fun to see the difference, especially if I run one channel of the amp per coil. We are talking over 4000 watts RMS!!! This will rival some VERY expensive subs on the market. Maybe HSU might come out with a higher power version of the sub?

acepaul February 14th, 2022 3:39 PM

Update 2: The difference between the HSU stock BASH amp and the Marani amp was so profound I have now bypassed the original amps on both units and am running one sub on each channel of the amp. Quite a difference in performance! They never hit so hard in all the years I have run these subs. I'm actually fairly impressed with the HSU driver and its ability to handle more (carefully filtered) power. HSU could get a lot more out of these drivers with an amp upgrade.

Kevin_Hsu February 16th, 2022 10:12 AM

Hello there,

Glad to hear you had a good experience with the amp. As a word of caution, you do want to be careful when throwing that kind of power at the driver. You could easily blow the driver there. Also, using another amp/driver with the unit does void the warranty.

The marani amp is pretty expensive. What model are you using?

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