I ran the Omni subs with SEAS L26RO4Y 10" for a couple of months while I refurbished the proper dipole H-Frame boxes (see photos). Bass was powerful and tight. I didn't bother with any EQ for the trial, just driven straight off the 120Hz LP output into 60W/channel LM3886 chip amps. I did notice the omnis excited lower room modes that were not present with the dipole bass, but these could be reduced with proper EQ and perhaps room treatment.
I can't give a real comparison with original LXminis because I've never heard them. My own LXmini versions are all with 8" bass drive units instead of SL's 5", and also I wasn't happy with only the SEAS FU10RB by itself, so I always crossed them with an additional tweeter at either 5.8kHz or 7kHz. My LXminis do fall short compared to the awesome transparency and dynamics of the open baffle LX521.4 version, even though they are still mighty fine in their own right.
I did tidy up the wiring of the 3 top LX521.4 drivers, which I now suspend from the ceiling above the H-Frame boxes for improved isolation. ps the A500 amplifier is just for its heatsink case, actually inside are 4xLM4780 2 channel chip amps which each parellel drive its own 4ohm bass unit. Enclosure below them is their 1000VA 24-0-24V trafo.
Attachments
A closed box gives the best Q factor and is my favorite.. never liked the somewhat re verbing / resonance BR ported speakers which disturbs the low mid-range. TL also is great as well but mainly below 40 Hz.
Construction - SONY 8" subwoofer speaker
Hello everyone, my name is Tiago Sierra, I'm from Brazil.
In this video I show how I built a box for an 8-inch Sony subwoofer with FS of 33Hz.
I used 18mm thick MDF, 3-inch diameter duct.
On the internal walls of the speaker, I placed 2cm thick blanket + 3cm thick eggshell foam.
I didn't use screws to join the wood, only wood glue and wooden dowels with glue.
Hello everyone, my name is Tiago Sierra, I'm from Brazil.
In this video I show how I built a box for an 8-inch Sony subwoofer with FS of 33Hz.
I used 18mm thick MDF, 3-inch diameter duct.
On the internal walls of the speaker, I placed 2cm thick blanket + 3cm thick eggshell foam.
I didn't use screws to join the wood, only wood glue and wooden dowels with glue.
The speakers Dayton E150 HE 44 are design for bass-reflex, Fs : 40 Hz, Qts : 0.39, EBP : 89 Hz https://masori.de/fr/products/epique-e150he-44
Miscalculation, nevertheless
the speakers box is very beautiful !
Why did you become active?
Surely for THIELE & SMALL parameter unsuitable...
General view - as you can see, my dedicated Auditorium is small and... Crammed 😏, but shows no notable acoustic flaws, fortunately ! 😎
Electronics - from L to R, and top to bottom :
Speakers - several variations, depending on the mood :
- 222L Monitors BR 2 ways (DIY) on stands (DIY)
- 475L Monitors Sealed Isobaric 4 ways (DIY - in test)
In fact, these are several systems more or less intertwined... 😉
T
Electronics - from L to R, and top to bottom :
- Micro-Amp stereo SE (DIY)
- Audio Research SP3A1
- SRPP Anzaï phono/line preamp (DIY)
- Marantz 2270
- Technics SL-1200G
- McIntosh MC7100
- McIntosh C712
- Audio research D76 (back fan cooled)
- Accuphase E-560 with AD-50 and DAC-50 extension cards
- Yamaha CD-S300
- Marantz CD60
- U-OTL6080 amps (DIY)
- Yamaha CD-S300
- NAD 114
- Marantz CD-80
- Kraftwerk Unit power conditioner (DIY)
- Chino DABradio/USB/DAC
- Marantz 2250B
- Yamaha CD-S300
- U-KT120 SE amps (DIY)
- U-300B SE amps (DIY)
Speakers - several variations, depending on the mood :
- Magnepan SMGb (with DIY crossover)
- 375L Monitors BR 3 ways (DIY)
- Omega Ripole 2x12" active sub (DIY)
- T17FL2 Wide Band (DIY)
- Klipsch Heresy I (DIY modified)
- The Cube BR Jensen 2 ways (DIY)
- 222L Monitors BR 2 ways (DIY) on stands (DIY)
- 475L Monitors Sealed Isobaric 4 ways (DIY - in test)
In fact, these are several systems more or less intertwined... 😉
T
