How long and hard
Posted by: Naheed on 20 December 2002
I'm having a smallish party at the weekend and intend using my main naim system for the tunes.
I normally hammer the SBLs for say a hour or so, but i'm talking 7-8 hrs for this. A friend his bringing his DJ TT along, not even sure if this will connect up, some Technics crap.
Anyway is this a bad idea, system wise can the 250s and SBLs cope ?
naheed...
I normally hammer the SBLs for say a hour or so, but i'm talking 7-8 hrs for this. A friend his bringing his DJ TT along, not even sure if this will connect up, some Technics crap.
Anyway is this a bad idea, system wise can the 250s and SBLs cope ?
naheed...
Posted on: 20 December 2002 by Phil Sparks
There's a few shutting down the power amp stories here:
web page
In my experience the SBLs will prob be OK as long as you don't drive the amps into clipping (if I recall the SBL bass driver has a heatsink sticking out of the front to disipate the heat). The 250s may bottle out but haven't you got yours running active which must reduce the load compared to passive? Running another system in parallel may be a way of getting extra dB without over driving the sytem.
Phil
web page
In my experience the SBLs will prob be OK as long as you don't drive the amps into clipping (if I recall the SBL bass driver has a heatsink sticking out of the front to disipate the heat). The 250s may bottle out but haven't you got yours running active which must reduce the load compared to passive? Running another system in parallel may be a way of getting extra dB without over driving the sytem.
Phil
Posted on: 20 December 2002 by johno
Naheed,
Someone is bound to knock the bass chamber and break the seal...
Hasn't your technics buddies got a pair or Cervin Vegas that have a high efficiency ~93 so will be a lot louder than the SBL's...
Just a thought...
How about another set of SBL's and going passive ?
I know someone who has a spare pair ;-)
John
Shore
Someone is bound to knock the bass chamber and break the seal...
Hasn't your technics buddies got a pair or Cervin Vegas that have a high efficiency ~93 so will be a lot louder than the SBL's...
Just a thought...
How about another set of SBL's and going passive ?
I know someone who has a spare pair ;-)
John
Shore
Posted on: 21 December 2002 by NB
Do you think its a wise move using your expensive, well loved Naim system at a party? Are you prepared to risk drink being spilt on your SBL's or cigaretes being stubbed out on your 250, I think not!!
Be sensible put your Naim system in another room and use something cheap. I am sure your party guests are not going to enjoy the sonic refinement of a Naim system at a party??
Regards
NB
Be sensible put your Naim system in another room and use something cheap. I am sure your party guests are not going to enjoy the sonic refinement of a Naim system at a party??
Regards
NB
Posted on: 21 December 2002 by gusi
Naheed,
I use a small desk fan for my 250. The fan about 8 inches across.
It works very well. After driving my briks at volume, the 250 gets very hot within 30 minutes. It trips after two or three hours. Specially on bassy tracks. With the fan on the 250 stays cold and doesn't trip.
My guess is that the low frequency impedance of the briks is lower than the mid range impedance causing them to draw more power on bassy tracks. SBLs could have a different characteristic.
I live in Singapore and room temperature and humidity are much higher than Europe in winter, so you again may be ok.
The fan is a small investment and you can use it again in summer.
If it does trip, put a fan on it for 10 minutes or so. They cool down very fast, ie the heat sink works fine once you have some air moving over it.
cheers
Gus
I use a small desk fan for my 250. The fan about 8 inches across.
It works very well. After driving my briks at volume, the 250 gets very hot within 30 minutes. It trips after two or three hours. Specially on bassy tracks. With the fan on the 250 stays cold and doesn't trip.
My guess is that the low frequency impedance of the briks is lower than the mid range impedance causing them to draw more power on bassy tracks. SBLs could have a different characteristic.
I live in Singapore and room temperature and humidity are much higher than Europe in winter, so you again may be ok.
The fan is a small investment and you can use it again in summer.
If it does trip, put a fan on it for 10 minutes or so. They cool down very fast, ie the heat sink works fine once you have some air moving over it.
cheers
Gus
Posted on: 21 December 2002 by Ron Toolsie
I blew a pair of DBL tweeters on the night of my 40th birthday party bash. Volume knob on the 52 was 2-3 o'clock. It was VERY loud, but quite clean. Of course the 135s driving only an individual tweeter will not be going into clipping, so it wasn't a case of overdriving the amps. No, the tweets were smoked with the amount of clean watts (probably no more than 10) that went into them. I'm so glad it was not the pair of 15" bass drivers that headed south instead.
Ron
Dum spiro audio
Dum audio vivo
Ron
Dum spiro audio
Dum audio vivo
Posted on: 21 December 2002 by Wolf
Too bad you smoked em, but now you know what 2 o'clock sounds like, I've only reached 11. Wish I were there, sounds like quite a bash. What are you going to do at 50?