[raynist]

Actually nowadays many receivers can do 4 ohms no problems... my Onkyo does it... (powering my now Noesis 212s)... I wasn't talking about 20hz at reference though.. i understand that isn't ever going to happen with ANY receivers.. in fact, prob most of the amps you buy won't get you there either.... I was talking about what if i crossed them at 80hz... i know my 212s are easy to drive as they are about 10 dB more efficient than these... but i was wondering if I upgraded, can i just power them off the receiver crossed at 80hz...

It's not about how cheap the amps are.. i already have a 4 channel 2000 watts per channel amp... i rather just use my receiver for simplicity sake..

I don’t think you would gain much, don’t those 212LP’s that you have extend pretty low from room gain? Thought you posted a graph a while back.

 

[DRC3]

Actually nowadays many receivers can do 4 ohms no problems... my Onkyo does it... (powering my now Noesis 212s)... I wasn't talking about 20hz at reference though.. i understand that isn't ever going to happen with ANY receivers.. in fact, prob most of the amps you buy won't get you there either.... I was talking about what if i crossed them at 80hz... i know my 212s are easy to drive as they are about 10 dB more efficient than these... but i was wondering if I upgraded, can i just power them off the receiver crossed at 80hz...

It's not about how cheap the amps are.. i already have a 4 channel 2000 watts per channel amp... i rather just use my receiver for simplicity sake..

I want that amp lol...I know what you mean on simplicity...I'd be interested to see how it worked....

 

[tebling]

Any idea what a typical response time from Jeff is? I finally decided to pull the trigger on a pair of Single 8HT-LPs, but it's been three days without a word.

 

[raynist]

Any idea what a typical response time from Jeff is? I finally decided to pull the trigger on a pair of Single 8HT-LPs, but it's been three days without a word.

Calling him is best.

 

[tebling]

Calling him is best.

Thanks for the tip Ray, but as luck would have it he just replied The speakers are available and ready for shipping!

 

[jlpowell84]

I am assuming the main power suck on these is when you run them large; I am wondering how much power you need when you have it crossed at 60 or 80 Hz. I suspect even at reference a 2-300 watt per channel amp would be sufficient when crossed over at 80 Hz. Or is your experience different?

Quote from Ricci's spec assessment on databass.com when he tested the 215RT- "From 44-135Hz the 215RT's sensitivity is between 100-102dB which is quite good. Below 40Hz the response gradually rolls off towards 16Hz where it the drops off more dramatically below the vent tuning.

So in other words these are drivable by a receiver to 44hz. Headroom is needed only really below that. I have 400 watt monoblocks running mine and only ever clipped them testing the 215's outside. I wanted to more power at first and still would prefer more headroom but they also are not 'run of the mill' 400 watt amps either.

That is how high the CD is in the 215RT

Haven’t noticed any issues. I do sit back about 15ft

I'm about 14ft back no issues. When first getting the 215's I wondered about it but its all good

Thanks for the tip Ray, but as luck would have it he just replied The speakers are available and ready for shipping!

Tim I havn't been around in awhile, is this your first official order? Still wanting 212RT's?

 

[DekPM19]

Quote from Ricci's spec assessment on databass.com when he tested the 215RT- "From 44-135Hz the 215RT's sensitivity is between 100-102dB which is quite good. Below 40Hz the response gradually rolls off towards 16Hz where it the drops off more dramatically below the vent tuning.

So in other words these are drivable by a receiver to 44hz. Headroom is needed only really below that. I have 400 watt monoblocks running mine and only ever clipped them testing the 215's outside. I wanted to more power at first and still would prefer more headroom but they also are not 'run of the mill' 400 watt amps either.

I'm about 14ft back no issues. When first getting the 215's I wondered about it but its all good


Tim I havn't been around in awhile, is this your first official order? Still wanting 212RT's?

My problem is I live down here it the south and we don’t have basements we have bouns rooms and the right side of my room has a knee wall and I can’t fit a 215RT outside of my screen on the right side due to the knee wall. It would hit the wall as it tapers in towards the ceiling. On the other hand a 215RM on a 14” stand would fit and put the horn centered at 38” and 62” overall height and that would fit.

Since I am more into movies, home theater than music, I am between the jtr’s and the jbl 4722
Allen

 

[raynist]

Quote from Ricci's spec assessment on databass.com when he tested the 215RT- "From 44-135Hz the 215RT's sensitivity is between 100-102dB which is quite good. Below 40Hz the response gradually rolls off towards 16Hz where it the drops off more dramatically below the vent tuning.

So in other words these are drivable by a receiver to 44hz. Headroom is needed only really below that. I have 400 watt monoblocks running mine and only ever clipped them testing the 215's outside. I wanted to more power at first and still would prefer more headroom but they also are not 'run of the mill' 400 watt amps either.




My problem is I live down here it the south and we don’t have basements we have bouns rooms and the right side of my room has a knee wall and I can’t fit a 215RT outside of my screen on the right side due to the knee wall. It would hit the wall as it tapers in towards the ceiling. On the other hand a 215RM on a 14” stand would fit and put the horn centered at 38” and 62” overall height and that would fit.

Since I am more into movies, home theater than music, I am between the jtr’s and the jbl 4722
Allen

I was more into home theater than music before getting JTR speakers. Since then I am about 50/50 from 95/5. They are additcting.

 

[DekPM19]

I was more into home theater than music before getting JTR speakers. Since then I am about 50/50 from 95/5. They are additcting.

Yea that is true I could see that.
Allen

 

[raynist]

^^^^^^^

Something strange is going on with the quotes, that was me quoted above

 

[DekPM19]

I was more into home theater than music before getting JTR speakers. Since then I am about 50/50 from 95/5. They are additcting.

Yea that is true I could see that.
Allen

 

[desertdome]

Quote from Ricci's spec assessment on databass.com when he tested the 215RT- "From 44-135Hz the 215RT's sensitivity is between 100-102dB which is quite good. Below 40Hz the response gradually rolls off towards 16Hz where it the drops off more dramatically below the vent tuning.

So in other words these are drivable by a receiver to 44hz. Headroom is needed only really below that. I have 400 watt monoblocks running mine and only ever clipped them testing the 215's outside. I wanted to more power at first and still would prefer more headroom but they also are not 'run of the mill' 400 watt amps either.

At ~60 Hz, the impedance of the 215RT dips to 2.7 ohms and requires a lot of current. I have the King Maraschino amp rated at 400 watts @ 4 ohms and the Cherry Ultra Mono amp rated at 770 watts @ 4 ohms. The Maraschino amp has about 6 dB more headroom than the Cherry Ultra Mono amp despite the almost 2x watt rating of the Cherry. One reason (the other reason is input sensitivity) is because you need more current at low impedance. The Maraschino has 4x the current capability as the Cherry Ultra Mono and can handle the low impedance. Since both amps are made by the same company and rated the same way one can see how relying on wattage ratings alone can skew the perception of an amp's performance.

 

[tebling]

Tim I havn't been around in awhile, is this your first official order? Still wanting 212RT's?

Yes, and yes. The Single 8's are definitely a small dip into the JTR pool, but on the other hand I have a relatively small room and by all accounts they'll make a great front stage until the 212RT is feasible. They're on track to arrive tomorrow!

 

[jlpowell84]

Yes, and yes. The Single 8's are definitely a small dip into the JTR pool, but on the other hand I have a relatively small room and by all accounts they'll make a great front stage until the 212RT is feasible. They're on track to arrive tomorrow!

Oh no doubt! And a pair you will have forever

 

[jlpowell84]

At ~60 Hz, the impedance of the 215RT dips to 2.7 ohms and requires a lot of current. I have the King Maraschino amp rated at 400 watts @ 4 ohms and the Cherry Ultra Mono amp rated at 770 watts @ 4 ohms. The Maraschino amp has about 6 dB more headroom than the Cherry Ultra Mono amp despite the almost 2x watt rating of the Cherry. One reason (the other reason is input sensitivity) is because you need more current at low impedance. The Maraschino has 4x the current capability as the Cherry Ultra Mono and can handle the low impedance. Since both amps are made by the same company and rated the same way one can see how relying on wattage ratings alone can skew the perception of an amp's performance.

Can't quite recall precisely but how is your experience running the 215's off the Cherry 400 watts? Can't remember how loud in your room you could take it.

 

[coolgeek]

I don’t think you would gain much, don’t those 212LP’s that you have extend pretty low from room gain? Thought you posted a graph a while back.

Yes, yes, they do... i could actually listen to music without turning on my OS now... but i am just itching for bigger and ever bigger 'wall' of sound.. and maybe a bigger mid bass bang? Thus, my question regarding the 215 RMs... I am not really interested in the RTs as i don't want anymore down below... it's already too much to handle... i had to turn my OS down a little... this basement really have tons of gain down below... in fact, my curve goes up in the bass region...

I want that amp lol...I know what you mean on simplicity...I'd be interested to see how it worked....

Just your plain old vanilla Onkyo 11 channel amp... when i bought the 212s (I was one of the earliest buyers of those early noesis 212s), I actually also thought I needed lots of power, so i bought a 4x2000watt channel amp... after hours and hours of listening to them both, i can detect zero difference... so, just powering from the Onkyo is all i have been doing.. and i am much happier with it.. no need extra amps or other things in my chain.. i am a movie buff.. so the eaier the setup the better for me.. all i care about is turn it on, start watching movies... not worry about amps and all..

Now, the 215 RMs are rated less sensitive than the 212s, thus my question.. has anymore tried them off of just the receivers at 80hz crossover... ?

Quote from Ricci's spec assessment on databass.com when he tested the 215RT- "From 44-135Hz the 215RT's sensitivity is between 100-102dB which is quite good. Below 40Hz the response gradually rolls off towards 16Hz where it the drops off more dramatically below the vent tuning.

So in other words these are drivable by a receiver to 44hz. Headroom is needed only really below that. I have 400 watt monoblocks running mine and only ever clipped them testing the 215's outside. I wanted to more power at first and still would prefer more headroom but they also are not 'run of the mill' 400 watt amps either.

Thanks... but those are RTs, they are easier to drive than the sealed RMs no? Have you tested them, the RMs?

 

[jlpowell84]

Yes, yes, they do... i could actually listen to music without turning on my OS now... but i am just itching for bigger and ever bigger 'wall' of sound.. and maybe a bigger mid bass bang? Thus, my question regarding the 215 RMs... I am not really interested in the RTs as i don't want anymore down below... it's already too much to handle... i had to turn my OS down a little... this basement really have tons of gain down below... in fact, my curve goes up in the bass region...




Just your plain old vanilla Onkyo 11 channel amp... when i bought the 212s (I was one of the earliest buyers of those early noesis 212s), I actually also thought I needed lots of power, so i bought a 4x2000watt channel amp... after hours and hours of listening to them both, i can detect zero difference... so, just powering from the Onkyo is all i have been doing.. and i am much happier with it.. no need extra amps or other things in my chain.. i am a movie buff.. so the eaier the setup the better for me.. all i care about is turn it on, start watching movies... not worry about amps and all..

Now, the 215 RMs are rated less sensitive than the 212s, thus my question.. has anymore tried them off of just the receivers at 80hz crossover... ?



Thanks... but those are RTs, they are easier to drive than the sealed RMs no? Have you tested them, the RMs?

Not quite sure about RM's, I have three RT's. But same sensitivity specs but I don't think data bass tested an RM.

 

[Brady84]

I know with the 212RT's sensitivity that any amplification beyond a AVR is most likely unnecessary but curiosity has gotten the best of me. After the glowing reviews and the right deal at the right time I went ahead and pulled the trigger on a pair of PS Audio Stellar M700 monoblocks.http://www.psaudio.com/products/stellar-m700-power-amplifier/#tab-product_enquiry

700wpc and 2ohm stability should result in 212's behaving as they should at all times; I'll report back here if I find any difference after the upgrade in amplification. Now onto the task of finding a Dirac live compatible processor that also supports dolby vision and doesn't break the bank.

 

[casperslide2004]

Anyone have any advice on integrating an S2 sub with 2 215RT and a 215RM?

 

[beastaudio]

Anyone have any advice on integrating an S2 sub with 2 212RT and a 212RM?

For starters, plug the s2 into power. You should have the rest covered from there...