https://www.eighteensound.it/en/products/lf-driver/21-0/4/21ntlw5000-4

i haven't purchased the drivers yet but most likely this is the one ...

this is for an audiophile type home system for electronic dance music in a semi-open space ( open plan concept house ) 

i mention "audiophile" because i want to tune the subs to about 18 hz ( instead of manufacturer recommended 33 hz ) and run them at a lower power to get clean deep bass instead of just loud bass ... that means i won't need even half of the rated power of the subs ...

i am thinking 8 channel amp with about 1KW per channel is what i need ...

the idea is each sub gets its own amp channel and DSP that way i can tune out the room modes using MSO ( multi sub optimizer ) software which develops individual EQ settings for every sub location for most even in-room bass coverage ...

actually i was thinking 8 channel amp with 6 channels driving 6 subs and 2 more channels driving woofers ( 80 hz - 250 hz ) and frequencies above that will be handled by lower power amps like QSC PLX and QSC CX ...

i read here that multi-channel amps don't do well when all channels drive subs and i can understand why ...

but also not really keen on having like 8 X Crown XLS amps taking up an entire closet ...

i also think if i can do basic DSP ( like crossover, delay, EQ and limiter ) in the amp it could really simplify the setup further versus having a mess of cables ... also i would really love to have AES inputs and 24 bit / 96 khz for cleaner signal path ( yea i know, makes no difference for subs )

as far as i understand Powersoft is best for subs, i was thinking Ottocanali ( ouch $$$ ) but also that the new kid on the block ( Linea Research ) can deliver similar performance for less $$$

i was told Crown is not good for bass ... nobody explained why

i'm super broke i want the cheapest gear possible but i will never buy anything that isn't good - i would rather have nothing at all.  

basically as i see it buying cheap trash is more expensive than buying quality so if i can't afford quality then i definitely can't afford trash 

i previously tried to look for quiet amps but at this point i think i will just build a soundproof closet for them so just need a good multi-channel subwoofer amp with not too much power per channel as i am not looking to drive subs into distortion ...

how would you approach this situation ?  what would you get ? 

thanks in advance !

Why do you think you need 8 x 18" subs in a house?

I have 2 x 15" subs and can rattle ornaments on the mantle piece in the house next door but one if I want to. However, I prefer to use a low powered high quality amp and get a little more speed and dynamics over sheer output.

if ur broke why u chattin about 21's ?

Someone looking to move into an empty/embargoed property in Billionaires Row?  

I don't know about finding a high power 8ch but a pair of these might just get it done...  https://www.aliexpress.com/item/32980668849.html?spm=a2g0o.productlist.0.0.75741f40RI16vS&algo_pvid=2a445f26-950e-4267-98e6-9559496038ce&algo_exp_id=2a445f26-950e-4267-98e6-9559496038ce-20&pdp_ext_f=%7Bsku_id%3A66772130062%7D&pdp_pi=-1%3B792.9%3B-1%3B95.12%40salePrice%3BCAD%3Bsearch-mainSearch" rel="nofollow - 4 Channel 750 Watts at 8ohm Class D 1U Professional Power Amplifier DJ Subwoofer Poweramp PA Stage Prokustk M50D|Stage Audio| - AliExpress

Add a DSP and you're still at just 3U rack space but you will need a rather beefy 230v supply for it.

Conanski wrote: I don't know about finding a high power 8ch but a pair of these might just get it done...  - 4 Channel 750 Watts at 8ohm Class D 1U Professional Power Amplifier DJ Subwoofer Poweramp PA Stage Prokustk M50D|Stage Audio| - AliExpress Add a DSP and you're still at just 3U rack space but you will need a rather beefy 230v supply for it.

were you trying to link to one of those Sinbosen FP20000 units that everybody uses at AVS ?

well it wouldn't be the end of the world i mean i need a rack anyway - the difference is you can't do the job of 8 subs with one but you CAN do the job of 8 amps with one ...

does it make sense to do it ?  i don't know that's why i'm asking ...

i'm looking to invest into quality, flexible tools ( amps ) not simply meet the power demands of the subs ... otherwise i would get one of those Sinbosens that do like 10,000 watts for $900 but sound like vacuum cleaner and last about 3 weeks ...

i'm on a 2 week ban from AVS and over there you're not cool unless you run at least 8 subs in your home theater and unless the subs are TC Sounds LMS Ultra they should be at least 21" ...

granted they run their subs in basement home theaters and they probably have gigantic lots with the next house half a mile away ... 

by contrast i would be running the subs on 1st floor with just 11 feet between me and the next house ... i did some testing with my single TC Sounds LMS Ultra and surprisingly the house contains bass pretty well - i can actually hear more midrange through the wall than bass !  and over the wind gusts i couldn't hear anything at all.

are you sure you're not making that stuff up about your dual 15" subs having serious output ?  i don't even know any serious 15" subwoofer drivers, except maybe some Car Audio units.

anyway my neighbor is like always in Florida ...

frankly everybody here in NJ is always in Florida ... i don't know how Florida can accommodate all the people from NJ ...

what exactly is stupid about the question ?

you don't agree with my goals - i don't agree with yours.

i guess that makes you an idiot - right ?

or did you wait like a slave until others voiced their opinions so you could mirror them and get a pat on the back from fellow sheep for being a good boy who never thinks for himself and only can voice the sentiment you pick up from others  ?

yeah i thought so.

So it appears you are tyrying to "be cool" and keep up with the neighbours rather that trying to get good sound.

LOL, you obviously don’t have a clue….. and you have no idea who you have just called an idiot!!

Robbo is most certainly no idiot or a sheep.

Line Array wrote: were you trying to link to one of those Sinbosen FP20000 units that everybody uses at AVS ?

It was something similar but I don't know if it matters. You're all over the map, you say you don't want cheap junk but then mention Crown XLS which are the cheap chinese junk you're trying to avoid. You want Powersoft or Lab Gruppen but you're "broke and want the cheapest gear possible", but then turn up your nose at the chinese stuff. The caribbean island crews have been flogging some of these big chinese amps for years now and they have gained in popularity because of the performance delivered. 

In a brand name amplifier the most affordable option may be these...  https://www.powersoft.com/en/products/touring-amps/t-series/t604" rel="nofollow - T604 - Powersoft  yeah still not exactly cheap but there is no middle ground in the high power multi channel amplifier market.. in case you hadn't noticed. 

Just throwing your own ideas out and trying to get people to pull them together wont yield useful results in the same way. 

FOO wrote: If you want deep bass, and dont need oodless of SPL, get some old JBL TCB subs. Dual 18“ bandpass in a massive box. They go low! And can be found really cheap :)

An excellent choice. I remember JBL providing a Sound Power system for a Ministry Of Sound club tour back in the late 90s. Made the news here as during a sound check, they managed to blow the windows out one of the venues. 

I can’t imagine why…..

first of all thank you for not being a Troll and actually trying to answer the question.

you say Crown XLS is cheap Chinese junk ... i can see how an amp that only weighs 10 lbs and has RCA inputs and "DSP" that misses basic functions like subsonic filter or delay can be considered cheap junk ...

but they're some of the quietest amps ( in terms of fan noise ) on the market and unlike the Sinbosen stuff you can buy them from a reputable store, send them back if you don't like them and even ( GASP ! ) get warranty service if they need it.  

even though everybody on AVS runs those sinbosens and they break left and right i have yet to hear of ONE case of Sinbosen fixing anything under warranty.  it's always "i tried to contact Sinbosen and not much luck" ...  on other had they also all run XLS and i have yet to hear of even one XLS breaking at all nor have i ever heard of Crown not honoring warranty on their amps.

what do you mean by Caribbean Island crews ?  are those guys extra good at soldering or something ?  what makes them like these Chinese amps if nobody uses them here in US professionally ?

also the FP20000 is supposedly class TD which isn't the ideal type of amp for subs ... can you post a link to some other website with the same amp ?  maybe eBay ?

as for Powersoft T Series ... you will accuse me of flip flopping again because i said i don't want to waste an entire rack on subwoofer amps but actually i don't want single rack unit amps either ... i just don't like how they use all these weird fans and then they only pull the air over the heatsink instead of the entire amp because they used all the space in the back on the XLR plugs and only had room left for a tiny exhaust hole ...

i really like how military / industrial the ottocanali looks inside:

https://youtu.be/VCAOWEtj2TQ

it looks like it was pulled form some kind of Soviet Space Station while the 1RU powersofts look so pretty inside you can't take them very seriously ... they almost look like the Chinese fakes that paint aluminum to look like copper to beautify the amp on the inside and then decorate it with extra fans that do nothing except make noise ...

basically what are considered go to subwoofer amps for EDM ?  i guess you already answered with that Powersoft T series but what if we limit the options to 2RU amps ?

Space: roughly 25 X 30 feet and roughly 15 feet ceiling ( sloped ) with one wall that has about 150 square feet worth of opening.

music type:

https://youtu.be/oiPFtqmb_Q4

all speakers and subs will be designed and built by me.

worst case scenario i may get JBL or RCF tops and only DIY the subs.

"basically what are considered go to subwoofer amps for EDM ?"

You can't beat a Crest 10001! Go forever. And no problem driving into 2 ohm.  Perfect for your 8 subs. 

thank you fren !

unfortunately i'm already banned at diyAudio

this forum was recommended to me on prosoundweb where i am not banned yet but they keep deleting all my threads because they say i can only talk about professional use and not home use ...

i may come back to diyAudio for the third time after i study enough new material to disguise myself so they can't recognize me ...

none of them recognized me when i came back last time but i have been away for almost 15 years so that was easy ... however to come back after only a few months i would need to completely reinvent myself ...

i said an amplifier not strongman training equipment LOL

For home use, how often will you need to move it around? And dual purpose equipment is all the rage these days!  

ok well to further clarify then i'm looking for amps that are:

 - class D

 - SMPS

 - 2RU

 - 4 channels or more

ideally about 8 X 1000W in about a 20" deep, 30lbs chassis or so.

MUST BE ABLE TO RUN SUBS ON ALL CHANNELS AT THE SAME TIME

the Ottocanali meets most of my requirements but it's kinda pricey and i'm not sure it can actually run subs on all 8 channels at the same time - can it ?

Line Array wrote: as for Powersoft T Series ... you will accuse me of flip flopping again because i said i don't want to waste an entire rack on subwoofer amps but actually i don't want single rack unit amps either ... i just don't like how they use all these weird fans and then they only pull the air over the heatsink instead of the entire amp because they used all the space in the back on the XLR plugs and only had room left for a tiny exhaust hole  i really like how military / industrial the ottocanali looks inside: https://youtu.be/VCAOWEtj2TQ%5b" rel="nofollow - https://youtu.be/VCAOWEtj2TQ

Yep it's built like a piece of industrial communications equipment.. something I have seen a lot of  having worked for 20yrs in manufacturing and R&D for one of north americas biggest telecommunications companies.

Class D is very electrically efficient.. that is why those amplifiers don't need as much fan cooling, but I agreee the 1U form factor is an unnecessary compromise for an installation where less fan noise is preferred. I don't know what to suggest, separate power amplifiers are becoming extinct in pro audio as most production has shifted to powered speakers, there are still some 2-ch versions abailable at the budget end of the spectrum but all the touring grade amps are big $$ to buy new and there is no middle ground.. unless you look at buying used. 

 - class D"

Do Audiophiles even acquiesce to the use of Class D? I thought that it's all Class A, or at a pinch AB. And far better if it's valve. Maybe that's why you've been banned. Thankfully we're far more open minded here!  

all TVs get a 5 year warranty from Costco.  i used my Samsung for a month then called Costco and they sent me $300 price adjustment because the TV went down in price.  i then used it for another month and returned it to Costco for full refund.  Costco came out and picked it up themselves and they refunded every penny including delivery and installation.  The TV had a minor issue that they never bothered to verify was even there - they just took it back no questions asked.  the Samsung model before mine ( previous year ) was found problematic so Samsung bought them back from customers and replaced them with a new model for free.  I have read about people replacing their Samsung TV from Costco FIVE TIMES because they were not happy with the picture.  all at no cost.

try that with Sinbosen ...

when manufacturer and seller stand behind the product like that they have a very strong incentive to design the product in such a way that you will be happy enough with it to keep it ...

and vice versa ...

Conanski wrote: separate power amplifiers are becoming extinct in pro audio as most production has shifted to powered speakers, there are still some 2-ch versions abailable at the budget end of the spectrum but all the touring grade amps are big $$ to buy new and there is no middle ground.. unless you look at buying used.