[Marius]

About the breaker switch, from the manual http://bryston.com/PDF/Manuals/300003[28B].pdf
[url=http://bryston.com/PDF/Manuals/300003[28B]

 

So no stand by (as in using less power) just on/off, or to be more precise: Power-up/Power-down

Cheers,
Marius

[CanadianMaestro]

Always believed the front soft start to be on/off , and the breaker switch to be there for security reasons , protecting the amp for power failure and spikes, tripping when necessary.

Using the front panel switch gives me direct power so I took it not to be standing by.
Maybe James can clarify and also give numbers of power used, standing by or playing music.
Cheers Marius

This is correct. Using the front switch powers on/off FULLY, not in standby. There is no "standby" with these poweramps, unlike the BDA-1, BCD-1, and BDP-1.

cheers

[Marius]

don't know why the editor goes berserk, but i cant get this correct anymore in the AC editor, sorry.

About the breaker switch, from the manual http://bryston.com/PDF/Manuals/300003[28B].pdf
[url=http://bryston.com/PDF/Manuals/300003[28B]

 

So no stand by (as in using less power) just on/off, or to be more precise: Power-up/Power-down

Cheers,
Marius

[PierreB]

So can you explain this to me
From the manual of the 14B SST2 "The front panel label 14BSST2 is the actuator of an alternate action push button switch (push ON, push OFF) used  to apply or remove mains power to the SoftStart circuitry.  Push in to initiate the power-up sequence. Push again and  release to power down the amplifier."
Thanks.

[CanadianMaestro]

So can you explain this to me
From the manual of the 14B SST2 "The front panel label 14BSST2 is the actuator of an alternate action push button switch (push ON, push OFF) used  to apply or remove mains power to the SoftStart circuitry.  Push in to initiate the power-up sequence. Push again and  release to power down the amplifier."
Thanks.

Sorry, what is unclear about this? Full on, full off, for the front switch ( back switch too). There's no "standby".

[srb]

Sure there's a standby state.  In the case of the Bryston power amplifiers, that would be the quiescent current required to keep the front panel power switch and 12V remote trigger power relay energized.

For remote controlled components with a remote power function, that would also include keeping the IR or RF remote receiver circuit powered to be able to accept the remote power command.

Steve

[James Tanner]

Sure there's a standby state.  In the case of the Bryston power amplifiers, that would be the quiescent current required to keep the front panel power switch and 12V remote trigger power relay energized.

For remote controlled components with a remote power function, that would also include keeping the IR or RF remote receiver circuit powered to be able to accept the remote power command.

Steve

Hi Steve

Thats correct and the standby power can not exceed 1/2 a watt as of this year.

james

[Marius]

Hi Steve

Thats correct and the standby power can not exceed 1/2 a watt as of this year.

james

Really James, so my 28b SST is using power when front switched off, but breaker switch on?? How much please?
So to completely save all power I would need to switch the breaker switch off ?


the manual says 215 watts at idle:


 
making the on/off equation even easier: 1=2 | 2X215=430 -> 860 euro pyear for being idle...

I've checked on my power meter, but the 28b is only using power when front switched on. about 100 watt (was a quick check, will try later in more precise conditions), flipping the breaker switch on the back (without the front switch in the On position) doesn't show on the meter, which meters per watt....


So, 'Idle' is breaker switch On, front On, no music playing . Otherwise something is incorrect, my 28b, or the manual  


btw:  power consumption at idle is more (215) than power output at normal playing conditions (161)?

Marius

[James Tanner]

No I do not think you have to switch the breaker off just the front panel switch. 

This is true of the new Cubed series because the certification required it - I will ask engineering what the older SST2 series was.

james

[CanadianMaestro]

Sure there's a standby state.  In the case of the Bryston power amplifiers, that would be the quiescent current required to keep the front panel power switch and 12V remote trigger power relay energized.

For remote controlled components with a remote power function, that would also include keeping the IR or RF remote receiver circuit powered to be able to accept the remote power command.

Steve

Take a voltmeter and measure the output stage with front panel switch off and breaker switch on. If it's zero current, then it's not what's generally regarded as "standby".

[Marius]

Take a voltmeter and measure the output stage with front panel switch off and breaker switch on. If it's zero current, then it's not what's generally regarded as "standby".

My meter says what you describe. That's why I concluded earlier there's on and off , no more. No 'standby'. Switched on the front .  Breaker on gives no power usage when front is off.

Cheers Marius

[James Tanner]

Hi

There has to be some power otherwise the trigger inputs  would not be operational.

James:

[CanadianMaestro]

For me, the term "standby" means "ready to use", without need for a warm-up etc.

Bryston's digital gear have "standby" -- the red LED on BCD-1, BDA-x, and BDP-x. That turns green obviously, with full power "on". At least that's my understanding. I would need to unplug these components for "full" power off (LED off).

 

[Marius]

Maybe they work with the front switch switched into On? I never use these so i cant try.


*edit: from the manual 28bsst2


 



I did test whether the amps use more power with the breakers in on position, front off, compared to breakers off, but i am hard pressed to measure any difference. I took out the full group in my home meter system to be sure, and be able to readout the meter immediately.


My 28b's give me only 2 different power statuses:
- front off (no power used)
- front on (close to 100/120 watts used)


breakers on/off: no difference, amps plugged/unplugged: no difference within a variable range of 1-4 watts, but that might also be the rest of system in the house.


To me Idle means switched on but not playing, and Standby means in low-power state waiting to be switched on.
The 28b can be in idle state obviously, but uses much less power than the manual states (100-120 watts vs 215).
There seems not to be any difference from a power consumption perspective for the 28b between switched off, either by the breaker, the wall-plug, or the front panel switch.
No Standby state like the digital components as CanadianMaestro already said, but Standby as in ready-to-be-powered-on-by-pushing-the-front-panel-softcircuitswitch (or the remote turn-on cables of course).


according to the manual this seems correct:


 
Note: apply OR REMOVE ac line power.
Which is very nice of course, because i won't have to upgrade to the 28b3  


the 28b3 manual is a bit more precise:


 


Cheers,
Marius

Hi

There has to be some power otherwise the trigger inputs  would not be operational.

James:

[James Tanner]

Hi James,
 
This is a little convoluted, I will try to keep it succinct.
"STANDBY" means plugged in, breaker on, power switch off.
"IDLE" means plugged in, breaker on, power switch ON, no audio signal applied.
 
The 28B (SST2 or CUBED:
 
If the unit is plugged in, but the breaker is off, the unit consumes zero power.
This is a result of the breaker being directly in series with the AC input.
If the unit is in STANDBY, the power consumption is under 1W (28BSST2) or under .5W (28B CUBED)
If the unit is in Idle, the power consumption will be much higher (hundreds of Watts), each amp will vary, depending on calibration.
 
All other Amps (SST2 or CUBED):
 
If the unit is plugged in, but the breaker is off, the power consumption is under 1W (SST2) or under .5W (CUBED)
(This is a result of the circuit breaker controlling the current for the audio amp, but not the standby circuitry)
If the unit is in STANDBY, the power consumption is under 1W (SST2) or under .5W (CUBED)
If the unit is in Idle, the power consumption will be much higher (hundreds of Watts), each amp will vary, depending on calibration.
 
I hope this helps!
 
 
David Nelson
CAD Engineer
Bryston Ltd.

[Marius]

Thx!
Very clear.

Marius

Hi James,
 
This is a little convoluted, I will try to keep it succinct.
"STANDBY" means plugged in, breaker on, power switch off.
"IDLE" means plugged in, breaker on, power switch ON, no audio signal applied.
 
The 28B (SST2 or CUBED:
 
If the unit is plugged in, but the breaker is off, the unit consumes zero power.
This is a result of the breaker being directly in series with the AC input.
If the unit is in STANDBY, the power consumption is under 1W (28BSST2) or under .5W (28B CUBED)
If the unit is in Idle, the power consumption will be much higher (hundreds of Watts), each amp will vary, depending on calibration.
 
All other Amps (SST2 or CUBED):
 
If the unit is plugged in, but the breaker is off, the power consumption is under 1W (SST2) or under .5W (CUBED)
(This is a result of the circuit breaker controlling the current for the audio amp, but not the standby circuitry)
If the unit is in STANDBY, the power consumption is under 1W (SST2) or under .5W (CUBED)
If the unit is in Idle, the power consumption will be much higher (hundreds of Watts), each amp will vary, depending on calibration.
 
I hope this helps!
 
 
David Nelson
CAD Engineer
Bryston Ltd.

[DarqueKnight]

I leave my bedroom and home theater electronics off, because I don't often use them. I leave my office and two channel electronics on 24/7 because I listen to them almost every day and I don't want to wait for them to warm up and reach optimal sound.

The Pass Labs X600.5 monoblock amps in my two channel system each draw ~5 amps continuously at idle. This works out to 156 kilowatt hours per month or an average $14 per month added to my bill. Put in perspective, I used to have a cable TV package that cost $130 per month and I used to have a second phone line in my home that cost $27 per month. The $168 a year I pay to keep my amps on 24/7 is well worth it to me...especially when I consider the offset of $1884 saved yearly by ditching cable and the extra phone line.

Pass recommends that their electronics be kept on all the time. Their preamps do not have a power switch.

[CanadianMaestro]

In my system, I did not hear any benefits from leaving my 14B2 power amp on all day. A 30-min warmup is enough for me. I guess my brain has sufficiently adjusted to its sublime SQ. My preamp I leave on 12/7, it consumes only 28W idle.