Featured Facts or Fiction

[ThxOne Premium Member]

I would like to bring this thread here as a friendly place to discuss car audio related facts or call fiction on random car audio topics.

I will start it off. I believe there are such things as "Bridged - Mono Amplifiers." Some would say you can't bridge a mono amplifier. Believe it or not, many mono amplifiers are bridged. Here is what I would present as proof.

Please feel free to insert your opinions, proof, disproof, facts or other.

Bridged-Mono Amplifier.

Click to read more...

 

[CarAudio.com - Hal AI Bots]

I would like to bring this thread here as a friendly place to discuss car audio related facts or call fiction on random car audio topics.

I will start it off. I believe there are such things as "Bridged - Mono Amplifiers." Some would say you can't bridge a mono amplifier. Believe it or not, many mono amplifiers are bridged. Here is what I would present as proof.

Please feel free to insert your opinions, proof, disproof, facts or other.

Bridged-Mono Amplifier.

I'm here to assist with technical questions or concerns about car audio. If you have a specific question about bridged mono amplifiers or any other car audio topic, feel free to ask!

 

[chillin 10+ year member]

Interesting topic. I'd like to hear @RobGMN's thoughts on it.

 

[RobGMN Premium Member]

A mono amp cannnot be bridged. It is fiction to claim otherwise.
TWO mono amps can be bridged.

A branded mono car amp (Rockford, Skar, B2, Taramps, ect) cannot be bridged. It is fiction to claim otherwise.
A multichannel branded car amp (Rockford, Skar, B2, Taramps, etc) MAY be bridged, depending on circuit design.

This represents a mono amp. it cannot be bridged.
TWO of them MIGHT be.

 

[ThxOne Premium Member]

A mono amp cannnot be bridged. It is fiction to claim otherwise.
TWO mono amps can be bridged.

A branded mono car amp (Rockford, Skar, B2, Taramps, ect) cannot be bridged. It is fiction to claim otherwise.
A multichannel branded car amp (Rockford, Skar, B2, Taramps, etc) MAY be bridged, depending on circuit design.

This represents a mono amp. it cannot be bridged.
TWO of them MIGHT be.
View attachment 65544

Which is the diagram I have posted. Two amplifiers bridged in a mono amp. 1 input, 1 output.

 

[RobGMN Premium Member]

Here's a fiction I have heard quite often: "These speakers put out XX watts".
Another one: "This head unit puts out triple digit watts".

Keep it going.

 

[ThxOne Premium Member]

Here's a fiction I have heard quite often: "These speakers put out XX watts".
Another one: "This head unit puts out triple digit watts".

Keep it going.

I have heard similar. Usually from new people to car audio or those trying to impress people.

 

[RobGMN Premium Member]

I have heard similar. Usually from new people to car audio or those trying to impress people.

Or sell a product.

 

[RobGMN Premium Member]

Which is the diagram I have posted. Two amplifiers bridged in a mono amp. 1 input, 1 output.

Two amps is not "a mono amp".
This diagram represnts "a mono amp".
Two of them would would be mono ampS.

It take more than one mono amp to make a bridged configuration.
One mono amp cannot be bridged.

 

[ThxOne Premium Member]

Two amps is not "a mono amp".
This diagram represnts "a mono amp".
Two of them would would be mono ampS.

It take more than one mono amp to make a bridged configuration.
One mono amp cannot be bridged.

The diagram I posted is literally a Bridged-Mono amplifier. Two amplifiers bridged mono. One input, one output.

 

[ThxOne Premium Member]

Bridge Amplifiers
"A bridge amplifier holds two internal power amplifiers that put out a differential/balanced output. This arrangement takes advantage of solid-state power amplifier's ability to swing high current, while being voltage limited. In short, a bridge configuration allows us to get four times the amount of power output from power-supply rail voltages than what we would get with the same rail voltages with the conventional single power amplifier. For example, with +/-24Vdc power-supply rails, a single solid-state power amplifier might swing voltage peaks of +/-20V, which into an 8-ohm load equals 25W. In contrast, two of the same power amplifiers in a bridge configuration would yield +/-40V peak voltage swings, which equals 100W into 8-ohm loudspeakers." - Tubecad.com

 

[ThxOne Premium Member]

Who has noticed that swapping out your factory paper cone door speakers for component speakers with poly or other non paper materials can result in much less bass output from your door speakers?

 

[Mitchell Fosgate III]

Bridge amplifiers would take on more voltage and therefore create more power. Possibly 4 times the amount as that of a single mono amplifier. Radios, as in single ended. As to whether two mono amps can be combined, if you consider pre-amplifiers and power amplifiers a mono amp, then yes, you can bridge them together. Using a pre-amplifier and a power amplifier would do.

One more point then I'm done answering the question. Mono amp and a bridge amp. If we take a look at the possible types of distortion a amp brings up, you will have several classifications of them. Amplitude distortion, Frequency distortion, Clipping, crossover distortion, and phase distortion. Each combination of bridge amplification brings about different outcomes of desired results. Pick one results closest to that outcome of distortion. Minimize that distortion through conductance or something called Transistor coupling. This deals with biasing a transistor above or below 50%, class B amplifiers. I hope that helped.

One more point then, I'll stop. On one more point on voltages. On a Pioneer double din AVHNEX4400 radio, Since voltages are important, and not really necessary is the parking brake wire, I think connecting the parking brake wire to the black wire on the radio side should be done automatically. That way the radio doesn't lock. No point in people calling you an incompetent after you connect it to the parking brake switch. Make sense to me.​

 

[RobGMN Premium Member]

This is the only amp you have to work with. You have a quantity of one.
What would be the recommendation for bridging it to make more power?

 

[RobGMN Premium Member]

Who has noticed that swapping out your factory paper cone door speakers for component speakers with poly or other non paper materials can result in much less bass output from your door speakers?

Haven't experienced it, but if they have the same excursion at the same frequency, and are the same size, does paper move less air than poly?

Are you swapping in drivers that have a lower output in general? Crossovers different? Higher LF dropoff below a certain threshold?