petehall347
the brandy coffee man
another way is add i light bulb in series with the speakers .
"I understand what you are trying to do and why you are trying to do it. But I believe your execution is a little off"
That's nothing new. Lol
I agree that having an amp with the power output of twice the speakers rating, that's a pretty good rule of thumb for other things too. I picked up an Sakura AV-735 karaoke amplifier, it puts out 700w x 2 @ 8 Ohms and 1325 x 2 @ 4 Ohms. The power supply is 220v ac, we have 110 so I picked up a step-up/step-down transformer rated at 5000w.
That should be sufficient to run the Sakura, a tv monitor for karaoke and the 120w Yamaha Integrated Mixer EM Series Model 85 amp I power the monitor speakers with. At home I still need to upgrade a circuit for it as the circuit it's plugged into is still 15 amps. Should, according to my brother who is far more electronically literate than I, run a 25amp circuit for it. So far it hasn't really been an issue since I have rarely have pushed that amp more than around 1/4 volume and never more than 1/3 volume. However, I plan eventually to be taking it to gatherings where it it will be used outside in the open. Will probably need a bit more volume then
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I suddenly have Marantz envy! Been contemplating getting a big Marantz, love my 2215B (baby) Marantz. Can only imagine what the baby's big brother can do. I don't recall the exact model but my cousin in Arizona has one, I spotted it in the background in a photo he posted on Facebook. I asked him about it and he said he's not using it because the controls are scratchy, I suggested he either get it gone through and cleaned up or sell it to me. Haven't heard anything back about him being willing to sell yet.
That 2215 was my first receiver, got it at a pawn shop and carried it home on my bicycle several miles. My legs were fine but my arms were toast, it was worth the effort and I still have it decades later.
This is true, however I still like to know if an idea will work. Whether I use it or not is irrelevant, just wanted to know what others had to say about it. From what I have gathered, a meter can be a tool to help visualize what's going on between the amp and speakers. Bottom line though it seems, is that there is no substitute for what's going on between the ears and the brain
z-adamson
Addicted Member
Fuses won't tell you how much headroom the amplifier has left before clipping the waveform. And that's the info the op wants to have available to him while blasting away.
z-adamson
Addicted Member
Got pics? This sounds interesting.
WaynerN
Addicted Member
A low value fuse will stop that before that happens. Speakers don't blow because they produce distortion, they blow because they received too much current, causing voice coils to get hot, warp and die.
whoaru99
Epic Member
I've read about a number of instances where lamps have been used as limiters by OEMs. Some models of Bose, as I recall off hand, others too but I don't remember all the brands.
z-adamson
Addicted Member
Last I checked the voice coil will go open to protect the fuse about 1/2 the time.
They are a good addition to an amp that has no protection circuitry to monitor dc at the outputs etc. because something is better than nothing......but that's about it.
whoaru99
Epic Member
Damn fuse keeps blowing and I'm out of spares, anybody have a gum wrapper or bit of "tinfoil"?
Yes, that's certainly one failure mechanism, but it isn't the only one. Wires can also break. Also, the voice coil can get slammed into the magnet and bent.
Ingramite
On The Lost Highway
I don't need no stinkin meter.
I hooked up my Boogie Lights off my Harley. Getting it through the doorway to listening post was a little challenging but it was an old carpet that needed replacing anyway.
They pulse to the beat of the jams AND change colors. Does anyone know how to calibrate them to flash blue when I'm grooving on the blues?
I hooked up my Boogie Lights off my Harley. Getting it through the doorway to listening post was a little challenging but it was an old carpet that needed replacing anyway.
They pulse to the beat of the jams AND change colors. Does anyone know how to calibrate them to flash blue when I'm grooving on the blues?
goodolpg
Just an old fart trying to help.
Exactly.
A little common sense and self control go a long ways.
Let's just say the OP decides he can control his volume levels and turn it down if it sounds distorted or his receiver/amp is running hot.
I suppose he could still install some sort of kludge for any situations where alcohol, guests, or a combination of both might cause possible speaker damage.
WaynerN
Addicted Member
Yes, that makes sense. other people like to "invent" reasons why the common sense mode doesn't work, "or lets use gum wrapper" to replace a fuse. I guess bad decisions are made daily......
Some Community PA speakers had those
Once you hear it...you will understand what everyone is trying to tell you in this thread. When the sound gets muddy and/or harsh and those conditions are alleviated by turning down the volume, that is the distortion, either from the amp and/or the speakers, that you want to avoid. It is possible that some of us learned this the hard way...in younger years perhaps....by blowing up components. If you haven't done that yet, you could be well on your way
But like I said, once you hear it, you will know it and then you will stop obsessing about meters for any purpose other than their real one...which is eye candy.The approach you are wanting to implement seems logical given that meters exist and speaker power ratings exist. But the ability to use these things in a useful way, at least in a precise and useful way, is an illusion. For one, the calibration issues already mentioned several times. That and distortion happens in both speakers and amps and even if by using meters to avoid amplifier distortion, you still need your ears to be listening for speaker distortion.
z-adamson
Addicted Member
I don't think anyone is really arguing against common sense.
It just boils down to how it is implemented. Is it best to under power and use common sense to avoid clipping the amp or is it best to overpower and use common sense to avoid over excursion etc.?
JohnT123
Super Member
I have a meter unit in my system. It's quite sophisticated and the service manual has detailed calibration instructions. It can look at signal flow before the power amp and output power from the amp. VU is on the top scale and power output is on the bottom scale. My Klipsch speakers rarely see more than one watt. Fortunately the sensitivity can be switched. You can set the display for average, peak and peak hold.
Don't see these very often but it covers a lot of ground. I actually use it to see when my stylus needs to be cleaned. Channel imbalance usually shows up before audible distortion.
Don't see these very often but it covers a lot of ground. I actually use it to see when my stylus needs to be cleaned. Channel imbalance usually shows up before audible distortion.