General Consensus On Subs In HiFi

[BiggaJ]

The KC62 does have speaker level connections, just using a phoenix connector instead of a speaker (so you use whatever speaker cable you want).

Pure marketing. Firstly, a speaker/subwoofer has no idea what you are feeding it content wise. With the speaker level input, it draws so little power from the main amplifier that it's almost invisible. The choice between RCA and speaker level, if both are designed correctly, should be system/connectivity based.

Congrats on your purchase.

Thanks ... I got the sub home last night but aside from positioning it where I would ideally want it, I've not yet connected it to the amp. I have read through the set up procedure and from what they claim the best position is to have it in a corner of the room set back from the speakers which is my preferred choice. I will over the next few days get around to tweaking it and seeing how it performs.

 

[abacus]

Do the subwoofer crawl to find the optimum position for the sub before tweaking it.

Bill

 

[Integralista]

Do the subwoofer crawl to find the optimum position for the sub before tweaking it.

Bill

In my case (two active Velodyne SPL 800 subs) is best position like following: each closer to the main speaker, better and more coherent is the sound. From my experience, I have tried 4-5 different subs at home, till I found the matching one. There were quite big differences in sound quality between Cabasse and Velodyne and Canton SWs. Also SW with 12inch paper cone was different sounding than 8inch kevlar and big difference was between SW with sealed box compared with bassreflex one. My speakers are very very fast and detailed with 3D space imaging. Best match was small sealed Velodyne with 8inch kevlar cone and 800watt D power inside. And later, I have added second one, same type. And yes, whole spectrum has been improved...I use them for some 23-24 years, still sounding pretty good and very reliable. BR.

 

[gasolin]

What make me question subs (can't think of the right word to describe it)

Is sub with small subs and 1000watt

Kef KC62 6.5" 2x500 watt, 2x500 watt, i mean specs say 105 db (not super loud but above loud, 90db) but it's stil 500 watt each, if i had 6.5" and 500 watt we are not talking a max excursion of maby 10mm but at least an inch in and out

Here the wtf comes in and that is both sub KC62 and 92 are rated at -3db at 11hz

SB17-Ultra R
15Hz to 320Hz (±3dB), with a 48.9mm Xmax

lets just say spl is enough (not rated) test say 15hz -6db

How can 2x6.5" do 500 watt each and down to 11hz

KC92 according to reviews -6db is at 15hz

 

[RTHerringbone]

That's just a stream of abstract technicalities to me.

It's why I can't ever do anything other than shrug when looking at the ASR forum where people are so wedded to quoting specs and technical theories that it feels far removed from what for me should be a hobby based on experience and listening 🤷‍♂️

I am not technical enough to "get it" but if you're lost speculating about how specs translate into audible sound signatures, volumes etc., then maybe the specs aren't that useful in the first place.

 

[Integralista]

What make me question subs (can't think of the right word to describe it)

Is sub with small subs and 1000watt

Kef KC62 6.5" 2x500 watt, 2x500 watt, i mean specs say 105 db (not super loud but above loud, 90db) but it's stil 500 watt each, if i had 6.5" and 500 watt we are not talking a max excursion of maby 10mm but at least an inch in and out

Here the wtf comes in and that is both sub KC62 and 92 are rated at -3db at 11hz

SB17-Ultra R
15Hz to 320Hz (±3dB), with a 48.9mm Xmax

lets just say spl is enough (not rated) test say 15hz -6db

How can 2x6.5" do 500 watt each and down to 11hz

KC92 according to reviews -6db is at 15hz

Hi, from my experience, it is important to try some preselected sub in your system. They all have "their sound" and synergy with your system can be very different. I tried I think 4 different subs, till the right one (Velodyne) was selected. There is also important to try several different positions in the room. And funny was also changing signal and power cables...😉 And Kef KC 62 is for sure one of better subs outhere.