4 Attachment(s)
Re: Ultimax vs Reference HO
If I had enough power, I'd probably go with the dual HOs sealed - primarily due to the considerable vent length and displacement of such a small cabinet for the vented UM. But then, so much depends on your vehicle, sub placement, processing, preferences/tastes/expectations, etc.
Hopefully this will help you decide:
Green: 1x UM in 1.55 ft^3 at 26 Hz (500 watts) 22 Hz F3 (4" tube vent x 29.5" at 34.4 m/s peak velocity).
Blue: 2x HO in 1.3 ft^3 combined (1,200 watts) 44.4 Hz F3.
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Re: Ultimax vs Reference HO
I need start by saying I have not worked with or heard an Ultimax sub. I would go with the HO's mainly for same reasons stated above. I could be biased since I listened to an HO in a car last year and that is what is going in my newest build. Ive also recently been doing sealed and IB setups after years of exclusively ported so that could a factor as well. I know the HO can sound very good in a sealed enclosure.
While we are on the subject of HO vs Ultimax, does anyone have any feedback based solely on SQ?
Re: Ultimax vs Reference HO
Thanks so much for modeling that for me in WINisd. I have WINisd and have not had a chance to model the drivers. I am seriously thinking about giving a passive radiator a try.
Re: Ultimax vs Reference HO
Quote:
Originally Posted by
DIY Audio Guy
Thanks so much for modeling that for me in WINisd. I have WINisd and have not had a chance to model the drivers. I am seriously thinking about giving a passive radiator a try.
Yeah, a PR could be just the thing for the UM in limited space.
Re: Ultimax vs Reference HO
Quote:
Originally Posted by
Grinder
Yeah, a PR could be just the thing for the UM in limited space.
We don't see a lot of PR's in car audio. But it is a viable solution for the tight confines of an under seat enclosure.
Re: Ultimax vs Reference HO
Quote:
Originally Posted by
DIY Audio Guy
We don't see a lot of PR's in car audio. But it is a viable solution for the tight confines of an under seat enclosure.
It might bear mentioning that, due to their considerable added cone weight, PRs should only be mounted vertically.
Re: Ultimax vs Reference HO
Quote:
Originally Posted by
Smitty
I need start by saying I have not worked with or heard an Ultimax sub. I would go with the HO's mainly for same reasons stated above. I could be biased since I listened to an HO in a car last year and that is what is going in my newest build. Ive also recently been doing sealed and IB setups after years of exclusively ported so that could a factor as well. I know the HO can sound very good in a sealed enclosure.
While we are on the subject of HO vs Ultimax, does anyone have any feedback based solely on SQ?
While the HO's can definitely hold their own (haven't heard my 10" HO yet, but based on what I've read), the UM series is no slouch either in the SQ department. The 8" Ultimax is used by Legacy Audio, in my Calibre speakers that I bought back in summer of '17. Suckers set me back $6,300 and they are worth every penny! The HNIC at Legacy Audio doesn't waste his time with anything that isn't truly SQ oriented with low-distortion. And neither do I. :D
https://drive.google.com/uc?export=v...2tQeG5rUHRNdW8
https://drive.google.com/uc?export=v...2DTs-FTqNQxtA3
https://drive.google.com/uc?export=v...2tQeG5rUHRNdW8https://drive.google.com/uc?export=v...2tQeG5rUHRNdW8https://drive.google.com/uc?export=v...2tQeG5rUHRNdW8
That's an 8" UM with dual 8" PR's with a s&#-ton of power behind them. Bass is awesomely clear, but it's the whole system that makes the bass sound great (with regards to music with bass-guitars and real bass-drums). It's funny because the heart of SQ-bass reproduction as I've come to find out, is in the midrange and lower-treble. The cleaner those are, the better real bass instruments are reproduced.
Re: Ultimax vs Reference HO
Re: Ultimax vs Reference HO
15" Ultimax with 4.5 cubes, 1lb stuffing per cube, sealed in my little Insight (2-seater hatchback) and it does SQ with authority. :)