Here you can read more about ported vs. sealed:
Our most common question answered in a few simple steps – learn what’s right for your system and listening needs.
www.svsound.com
I`m going to list models within your budget so you see what is available.
The big question is that left side optimal spot for the sub cause Monoprice 15 THX offers best bang for buck easily at 1500£ and with your room size, detached house, high listening levels in mind it would be ideal candidate. Comparable models are priced; SVS PB4000 - 2600£ and Arendal 1723 2V - 2400£ so this is quite a no brainer. Sadly it won´t fit right side corner due to 470mm width. It`s rather massive box.
15" 1000w RMS, THX ULTRA SPEC SUB - LIMITED WAREHOUSE STOCK Apply our AmericanAudioClub discount code to pay less than £1450.00 DoubleBubble Deal - Order a Pair & save 10% (applied automatically at checkout) The Monolith™ THX® certified subwoofer sets the standard for bass output, low...
americanaudioco.uk
I found grade-2 SVS PC4000 cylinders from forum advertiser going cheap as new one is 2400£. Compared to PB3000 this has the 15hz extended mode for even deeper bass. This would fit in many spots. 1190mm High x 419mm Diameter
SVS PC4000 Gloss Black Top Cylinder Subwoofer - Nearly New at AV.com
www.audiovisualonline.co.uk
If you would lean toward ported
duals then each can cost 1k£ max. Arendal 1961 1V is fine alternative with 39cm width which also looks nice and available in matte black and white!
Arendal Sound - THE BEST NORWEGIAN PRODUCT SINCE THE CHEESE CUTTER. “It was no coincidence. We’ve spent years researching, listening to our customers, planning, developing, engineering and investing in Arendal Sound. I always wanted our team to have something to be extraordinarily proud of and enth
arendalsound.com
If you would be wanting more compact sealed subwoofers, that would mean something like 2x SVS SB2000 Pro gloss black/white and black oak. Small discount should be possible with SVS products from forum advertisers. However i don´t believe these would "wow" you in similar way as the models mentioned earlier.
SVS SB2000 Pro Gloss Black Subwoofer at AV.com
www.audiovisualonline.co.uk
For one larger sealed subwoofer at 2k£ max (smaller than ported boxes) you would be looking these, but keep in mind you don´t get similar low end (deep bass) vs. the ported models if that matters.
Arendal Sound - THE BEST NORWEGIAN PRODUCT SINCE THE CHEESE CUTTER. “It was no coincidence. We’ve spent years researching, listening to our customers, planning, developing, engineering and investing in Arendal Sound. I always wanted our team to have something to be extraordinarily proud of and enth
arendalsound.com
Home Cinema Choice - Best BuyEISA - Best Product Home Theatre 2018-19 DoubleBubble Deal - Order a Pair & SAVE 10% (applied automatically at checkout)Find out more about running twin subwoofers here A top choice for home theater and audiophile music systems, the SB-4000 subwoofer delivers massive...
americanaudioco.uk
Contact us if you would like to order multiples. Developed for the discerning audiophile, the S1812 powered home theater subwoofer is ready to pound your chest and rattle your windows. The S1812 is a relatively compact subwoofer with the power reserves to pack a serious punch. The S1812...
www.powersoundaudio.co.uk