We have a very unique forum here, guys. We are an eclectic group of fanatical individuals with a WEALTH of talent, experience and passion for this craft we all love. Be we engineers, technicians, installers, financers, millers, etc...we all have two things in common: our love of good music and the pursuit of PERFECT amps and speakers. Why not build our own?!?!? Every year, there are new companies trying this very thing, but just NOT getting it right. This is why PG continues on, albeit with loads of repairs and modifications. Attrition is eminent. Sooner or later, we will have generated products which incorporate so much new "stuff"
that they won't resemble the original product, and we will have generated a new species.
Our members are unique in that we know where we want to be and how to get there. Our installers know the intrinsic challenges the automobile presents us with. Techs know how to not only help the installers overcome these challenges, but also how to repair and fix problems that arise. Engineers and designers know what we're looking for, while the rest of us (millers, finance specialist, etc...) know how to get us there. We have it ALL on the Phorum guys, certainly enough to at least build ourselves what we've been trying to find for a long time...near perfect amplifiers! Not for the masses (*at least not yet!), but for those of us who want them and have SOMETHING to contribute to the project. Even criticism helps. There
is NOTHING to stop us, and we have MUCH to gain from such a venture. I love PG equipment as much as ANYONE out there, but let's face it...we all know we're chasing an endangered species. Rodin ain't gonna revive PG, and apparently it ain't in there plans to even sell off the designs so someone else can make 'em. Sooner or later, we will have added so many unique parts and designs to PG amps that they will not BE PG amps anymore, but a new species of hardly recognizable equipment, never-be-fore seen! Of necessity, the bugs which drove us to "open 'em up" in the first place will be fixed, thus making these amps one step closer to perfection. Why not leapfrog past the inevitable and right to the obvious and BUILD OUR OWN AMPS!!! Our engineers and designers could get together with our installers and techs and utilize the input of what we ALL want, and build a limited edition Phorum amplifier, the cost of which our finance people can determine and conquer. If this turns feasible on a larger than small scale, we can go "back to the board" with the designs for larger scale production, maybe one day run our own electronics company. In the meantime, we can at least enjoy such a project and the camaraderie being involved with will garner. Everything starts with a dream, and necessity IS the mother of invention. The only immediate and obvious legal challenge I see is one of intellectual property ownership, which is really NOT an issue as long as unique ideas are copywritten and patented as such by each individual or as our Phorum entity. Whadaya' think?
The Perfect Amplifier...
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dBincognito
- Randy Bo-Bandy
- Posts: 3301
- Joined: Fri Feb 06, 2009 11:32 pm
Here you go...this is where you want to go.....you can do everything that PG did and MORE
http://www.goldphoenixpcb.biz/quote2.php
I suggested this before, it would take a quantity to make it worth while, and we need a design for the circuitry.
http://www.goldphoenixpcb.biz/quote2.php
I suggested this before, it would take a quantity to make it worth while, and we need a design for the circuitry.
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freshkryp69
- Posts: 643
- Joined: Sat Feb 23, 2008 10:17 pm
- Location: cocoa Florida
I am not sure about the perfect amp, but I know about the perfect cheer!
SSAudio.com ~ Dcon / Icon / Xcon / Zcon ~
Caraudio-forum.com
HomeAudioForum.net
PG Stash: Xenon 1200.1 & 200.4, Bass Cube, RCA's
Caraudio-forum.com
HomeAudioForum.net
PG Stash: Xenon 1200.1 & 200.4, Bass Cube, RCA's
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dBincognito
- Randy Bo-Bandy
- Posts: 3301
- Joined: Fri Feb 06, 2009 11:32 pm
I saw that episode. I gained a pinch or respect for Will, but just a pinch.dBincognito wrote:denim
OMG....this reminds me....last night I saw " Survivor Man "....guest appearance Will Ferrel
"ZPA's will have the same sound essentially as you get from the MS, they just feature a bigger shinier set of balls."
Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998
Install:
http://phoenixphorum.com/viewtopic.php?f=10&t=16998
Sorry. 
SSAudio.com ~ Dcon / Icon / Xcon / Zcon ~
Caraudio-forum.com
HomeAudioForum.net
PG Stash: Xenon 1200.1 & 200.4, Bass Cube, RCA's
Caraudio-forum.com
HomeAudioForum.net
PG Stash: Xenon 1200.1 & 200.4, Bass Cube, RCA's
Fish farming is the principal form of aquaculture, while other methods may fall under mariculture. It involves raising fish commercially in tanks or enclosures, usually for food. A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species' natural numbers is generally referred to as a fish hatchery. The most important fish species raised by fish farms are, in order, salmon, carp, tilapia, catfish and cod.
Increasing demands on wild fisheries by commercial fishing has caused widespread overfishing. Fish farming offers an alternative solution to the increasing market demand for fish and fish protein.
There are two kinds of aquaculture: extensive aquaculture based on local photosynthetical production and intensive aquaculture, in which the fish are fed with external food supply. The management of these two kinds of aquaculture systems are completely different.
Extensive aquaculture
Limiting for growth here is the available food supply by natural sources, commonly zooplankton feeding on pelagic algae or benthic animals, such as crustaceans and mollusks. Tilapia species filter feed directly on phytoplankton, which makes higher production possible. The photosynthetical production can be increased by fertilizing the pond water with artificial fertilizer mixtures, such as potash, phosphorus, nitrogen and micro-elements. Because most fish are carnivorous, they occupy a higher place in the trophic chain and therefore only a tiny fraction of primary photosynthetic production (typically 1%) will be converted into harvest-able fish. As a result, without additional feeding the fish harvest will not exceed 200 kilograms of fish per hectare per year, equivalent to 1% of the gross photosynthetic production.
A second point of concern is the risk of algal blooms. When temperatures, nutrient supply and available sunlight are optimal for algal growth, algae multiply their biomass at an exponential rate, eventually leading to an exhaustion of available nutrients and a subsequent die-off. The decaying algal biomass will deplete the oxygen in the pond water because it blocks out the sun and pollutes it with organic and inorganic solutes (such as ammonium ions), which can (and frequently do) lead to massive loss of fish.
In order to tap all available food sources in the pond, the aquaculturist will choose fish species which occupy different places in the pond ecosystem, e.g., a filter algae feeder such as tilapia, a benthic feeder such as carp or catfish and a zooplankton feeder (various carps) or submerged weeds feeder such as grass carp.
Despite these limitations significant fish farming industries use these methods. In the Czech Republic thousands of natural and semi-natural ponds are harvested each year for trout and carp. The large ponds around Trebon were built from around 1650 and are still in use.
Intensive aquaculture
In these kinds of systems fish production per unit of surface can be increased at will, as long as sufficient oxygen, fresh water and food are provided. Because of the requirement of sufficient fresh water, a massive water purification system must be integrated in the fish farm. A clever way to achieve this is the combination of hydroponic horticulture and water treatment, see below. The exception to this rule are cages which are placed in a river or sea, which supplements the fish crop with sufficient oxygenated water. Some environmentalists object to this practice.
The cost of inputs per unit of fish weight is higher than in extensive farming, especially because of the high cost of fish food, which must contain a much higher level of protein (up to 60%) than, e.g., cattle food and a balanced amino acid composition as well. However, these higher protein level requirements are a consequence of the higher food conversion efficiency (FCR -- kg of feed per kg of animal produced) of aquatic animals. Fish like salmon have FCR's in the 1.1 kg of feed per kg of salmon range whereas chickens are in the 2.5 kg of feed per kg of chicken range. Fish don't have to stand up or keep warm and this eliminates a lot of carbohydrates and fats in the diet, required to provide this energy. This frequently is offset by the lower land costs and the higher productions which can be obtained due to the high level of input control.
Essential here is aeration of the water, as fish need a sufficient oxygen level for growth. This is achieved by bubbling, cascade flow or aqueous oxygen. Catfish, Clarias ssp. can breathe atmospheric air and can tolerate much higher levels of pollutants than, e.g., trout or salmon, which makes aeration and water purification less necessary and makes Clarias species especially suited for intensive fish production. In some Clarias farms about 10% of the water volume can consist of fish biomass.
Especially when fish densities are high, the risk of infections by parasites like fish lice, fungi (Saprolegnia ssp.), intestinal worms (such as nematodes or trematodes), bacteria (e.g., Yersinia ssp, Pseudomonas ssp.), and protozoa (such as Dinoflagellates) is similar to animal husbandry. These problems are similar to what is found in animal husbandry of all types. However, animal husbandry is a larger and more technologically mature area of human agriculture and better solutions to pathogen problem exist. Intensive aquaculture does have to provide adequate water quality (oxygen, ammonia, nitrite, etc.) levels to minimize stress, which makes the pathogen problem more difficult. This means, intensive aquaculture requires tight monitoring and a high level of expertise of the fish farmer.
Very high intensity recycle aquaculture systems (RAS), where there is complete control over all the production parameters are being used for high value species. By recycling the water, very little water is used per unit of production. However, the process does have high capital and operating costs. The higher cost structures mean than RAS is only economical for high value products like broodstock for egg production, fingerlings for net pen aquaculture operations, sturgeon production, research animals and some special niche markets like live fish.[1] [2]
Raising ornamental cold water fish (goldfish or koi), although theoretically much more profitable due to the higher income per weight of fish produced, has never been successfully carried out until very recently. The increased incidences of dangerous viral diseases of koi Carp, together with the high value of the fish has led to initiatives in closed system koi breeding and growing in a number of countries. Today there are a few commercially successful intensive koi growing facilities in the UK, Germany and Israel.
Some producers have adapted their intensive systems in an effort to provide consumers with fish that do not carry dormant forms of viruses and diseases.
Increasing demands on wild fisheries by commercial fishing has caused widespread overfishing. Fish farming offers an alternative solution to the increasing market demand for fish and fish protein.
There are two kinds of aquaculture: extensive aquaculture based on local photosynthetical production and intensive aquaculture, in which the fish are fed with external food supply. The management of these two kinds of aquaculture systems are completely different.
Extensive aquaculture
Limiting for growth here is the available food supply by natural sources, commonly zooplankton feeding on pelagic algae or benthic animals, such as crustaceans and mollusks. Tilapia species filter feed directly on phytoplankton, which makes higher production possible. The photosynthetical production can be increased by fertilizing the pond water with artificial fertilizer mixtures, such as potash, phosphorus, nitrogen and micro-elements. Because most fish are carnivorous, they occupy a higher place in the trophic chain and therefore only a tiny fraction of primary photosynthetic production (typically 1%) will be converted into harvest-able fish. As a result, without additional feeding the fish harvest will not exceed 200 kilograms of fish per hectare per year, equivalent to 1% of the gross photosynthetic production.
A second point of concern is the risk of algal blooms. When temperatures, nutrient supply and available sunlight are optimal for algal growth, algae multiply their biomass at an exponential rate, eventually leading to an exhaustion of available nutrients and a subsequent die-off. The decaying algal biomass will deplete the oxygen in the pond water because it blocks out the sun and pollutes it with organic and inorganic solutes (such as ammonium ions), which can (and frequently do) lead to massive loss of fish.
In order to tap all available food sources in the pond, the aquaculturist will choose fish species which occupy different places in the pond ecosystem, e.g., a filter algae feeder such as tilapia, a benthic feeder such as carp or catfish and a zooplankton feeder (various carps) or submerged weeds feeder such as grass carp.
Despite these limitations significant fish farming industries use these methods. In the Czech Republic thousands of natural and semi-natural ponds are harvested each year for trout and carp. The large ponds around Trebon were built from around 1650 and are still in use.
Intensive aquaculture
In these kinds of systems fish production per unit of surface can be increased at will, as long as sufficient oxygen, fresh water and food are provided. Because of the requirement of sufficient fresh water, a massive water purification system must be integrated in the fish farm. A clever way to achieve this is the combination of hydroponic horticulture and water treatment, see below. The exception to this rule are cages which are placed in a river or sea, which supplements the fish crop with sufficient oxygenated water. Some environmentalists object to this practice.
The cost of inputs per unit of fish weight is higher than in extensive farming, especially because of the high cost of fish food, which must contain a much higher level of protein (up to 60%) than, e.g., cattle food and a balanced amino acid composition as well. However, these higher protein level requirements are a consequence of the higher food conversion efficiency (FCR -- kg of feed per kg of animal produced) of aquatic animals. Fish like salmon have FCR's in the 1.1 kg of feed per kg of salmon range whereas chickens are in the 2.5 kg of feed per kg of chicken range. Fish don't have to stand up or keep warm and this eliminates a lot of carbohydrates and fats in the diet, required to provide this energy. This frequently is offset by the lower land costs and the higher productions which can be obtained due to the high level of input control.
Essential here is aeration of the water, as fish need a sufficient oxygen level for growth. This is achieved by bubbling, cascade flow or aqueous oxygen. Catfish, Clarias ssp. can breathe atmospheric air and can tolerate much higher levels of pollutants than, e.g., trout or salmon, which makes aeration and water purification less necessary and makes Clarias species especially suited for intensive fish production. In some Clarias farms about 10% of the water volume can consist of fish biomass.
Especially when fish densities are high, the risk of infections by parasites like fish lice, fungi (Saprolegnia ssp.), intestinal worms (such as nematodes or trematodes), bacteria (e.g., Yersinia ssp, Pseudomonas ssp.), and protozoa (such as Dinoflagellates) is similar to animal husbandry. These problems are similar to what is found in animal husbandry of all types. However, animal husbandry is a larger and more technologically mature area of human agriculture and better solutions to pathogen problem exist. Intensive aquaculture does have to provide adequate water quality (oxygen, ammonia, nitrite, etc.) levels to minimize stress, which makes the pathogen problem more difficult. This means, intensive aquaculture requires tight monitoring and a high level of expertise of the fish farmer.
Very high intensity recycle aquaculture systems (RAS), where there is complete control over all the production parameters are being used for high value species. By recycling the water, very little water is used per unit of production. However, the process does have high capital and operating costs. The higher cost structures mean than RAS is only economical for high value products like broodstock for egg production, fingerlings for net pen aquaculture operations, sturgeon production, research animals and some special niche markets like live fish.[1] [2]
Raising ornamental cold water fish (goldfish or koi), although theoretically much more profitable due to the higher income per weight of fish produced, has never been successfully carried out until very recently. The increased incidences of dangerous viral diseases of koi Carp, together with the high value of the fish has led to initiatives in closed system koi breeding and growing in a number of countries. Today there are a few commercially successful intensive koi growing facilities in the UK, Germany and Israel.
Some producers have adapted their intensive systems in an effort to provide consumers with fish that do not carry dormant forms of viruses and diseases.
