Speaker Modifications?

P

practal

Audiophyte
I have finally completed my system but still feel a need to improve it. I am rather happy with the gear I have but I always like to tweak things. This lead me to thinking of modding my set of PSB Speakers.

I have been looking around and don't see a lot of information on mods outside of crossovers. Even that is mainly people talking about having it done but not how to go about it. Are there site's/well know forum members that offer this service or is it something you do yourself? If I need to learn to do it then were can I find good information to learn from?

Are there any other mods that are worth doing to improve speaker performance? Changing internal sound dampening material, internal wiring, adding weight, ect? I am an avid electronics modder but new to the audio world so I am not certain what is out there. I am interested in items that will make a noticeable difference and not eat my money without results.
 
Swerd

Swerd

Audioholic Warlord
I have finally completed my system but still feel a need to improve it. I am rather happy with the gear I have but I always like to tweak things. This lead me to thinking of modding my set of PSB Speakers.

I have been looking around and don't see a lot of information on mods outside of crossovers. Even that is mainly people talking about having it done but not how to go about it. Are there site's/well know forum members that offer this service or is it something you do yourself? If I need to learn to do it then were can I find good information to learn from?

Are there any other mods that are worth doing to improve speaker performance? Changing internal sound dampening material, internal wiring, adding weight, ect? I am an avid electronics modder but new to the audio world so I am not certain what is out there. I am interested in items that will make a noticeable difference and not eat my money without results.
The single most important components of a speaker is the crossover, followed by the individual speaker drivers, and then the cabinet design and construction. A well-designed crossover can make average or even mediocre drivers work well together. The only way I know of to understand how well a crossover performs is to be able to measure the frequency response curves of the unfiltered individual drivers and the combination with the crossover. This is not simple or inexpensive. If you are interested in learning more about this, contact local DIY speaker builders and learn from them.

The other important factor, especially for the lower frequencies, is how your speaker interacts with the reflecting surfaces of your listening room, the walls, ceiling & floor. Again, the only way to really understand what is going on and to systematically modify it is to be able to measure what's happening.

Most of the other things you mentioned such as changing internal sound dampening material, internal wiring, adding weight, etc. are likely to have little or no effect on a speaker's overall sound. PSB speakers have a reputation of being well designed and constructed. You will no doubt hear other opinions, but I think these mods are a waste of time.
 
JohnA

JohnA

Audioholic Chief
You are better off spending your time and money in room placement and making the room "sound" better.
 
GranteedEV

GranteedEV

Audioholic Ninja
Are there site's/well know forum members that offer this service or is it something you do yourself? If I need to learn to do it then were can I find good information to learn from?
I want to point out that PSB speakers are well known for their crossovers. There's some speakers IE B&W which can really benefit from a crossover redo. But when you start with a good crossover, I don't really recommend tweaking the crossover at all. Especially if you don't have the equipment and knowledge of what to do.

Are there any other mods that are worth doing to improve speaker performance? Changing internal sound dampening material, internal wiring, adding weight, ect? I am an avid electronics modder but new to the audio world so I am not certain what is out there. I am interested in items that will make a noticeable difference and not eat my money without results.
Swapping drivers is not an option and wiring won't do anything.

However --- Inexpensive speakers rarely have world class cabinet construction. That's usually the biggest cost cut and is one place where you can maybe make a difference. You're gonna have to take a look at what's going on inside your cabinet. Try reading the following and tell us what you think. The mods described prior have been done to a few people's Infinity P363s with positive results.

Beyond that, I really think you'd have fun making a DIY speaker rather than trying to do a world of improvement to some already good commercial speakers like PSBs.

You are better off spending your time and money in room placement and making the room "sound" better.
The above is also excellent device. Things like bass traps and diffusion panels should make a worthwhile improvement.
 
P

practal

Audiophyte
Leave the PSB alone - go and get some cheap speakers from a yard sale,Goodwill, or a pawn shop - and play with them.

Are you talking about the PSB GT1
I am talking about the GT-1s. I actually have an older pair of B&W DM310's I've had in storage for years and broke them out after I posted this.

Try reading the following and tell us what you think.
Option one is similar to what I have read other people doing and what I meant by internal dampening material. I don't believe option 2 is possible with these cabinets.

Swapping drivers is not an option and wiring won't do anything.
I was aware of the drivers, swapping drivers would require way more then what I'm capable of. This would require a new crossover to be built and that is way out of my league. I have seen people mention internal wiring but wasn't certain so I asked. I imagine the people that recommend it are the same that spend tons on wires and power cords.

I do have room correction material on the way. I had my previous house set up and am just getting around to doing the new home. This issue should hopefully be resolved this weekend.

I want to point out that PSB speakers are well known for their crossovers. There's some speakers IE B&W which can really benefit from a crossover redo. But when you start with a good crossover, I don't really recommend tweaking the crossover at all. Especially if you don't have the equipment and knowledge of what to do.
The main reason I brought up the crossover mod was that the crossover LOOKS rather weak compared to some others I have seen. However looks probably don't matter in the crossover world. I spent all day reading after I posted this and modifying them seems easy, I have nearly 20 years of experience repairing electronics.

The main downside is that I do not have the tools to test them. I am going to mess with my old B&W's to get some experience. I had looked at ClarityCAps MRs, Mundorf Supreme Resistors, and Goertz Inductors for the PSB and it totaled around $1300-ish for the 3 speakers. I only paid $1200 shipped for the three speakers initially. Definitely not worth it but cool stuff to learn.

I attached a picture of the crossover for the heck of it. One of my speakers originally arrived with a bad crossover that I still have laying around.

PSB GT-1 Crossover

Thanks guys. Any more suggestions?
 
zieglj01

zieglj01

Audioholic Spartan
The main reason I brought up the crossover mod was that the crossover LOOKS rather weak compared to some others I have seen. However looks probably don't matter in the crossover world. I spent all day reading after I posted this and modifying them seems easy, I have nearly 20 years of experience repairing electronics.

The main downside is that I do not have the tools to test them. I am going to mess with my old B&W's to get some experience. I had looked at ClarityCAps MRs, Mundorf Supreme Resistors, and Goertz Inductors for the PSB and it totaled around $1300-ish for the 3 speakers. I only paid $1200 shipped for the three speakers initially. Definitely not worth it but cool stuff to learn.

I attached a picture of the crossover for the heck of it. One of my speakers originally arrived with a bad crossover that I still have laying around.
They look better than the Image and Alpha series.
It is not about looks, it is about results. I know some one who changed
all the radial caps out of the Image series, and replaced them all with
poly caps - the end result was that the speakers, ended up out of phase.
Paul Barton is a musician, and has been doing this type work for a long
time. You will need to learn with measuruing tools and software programs.
$1300 on crossover parts - is like throwing money in the fire place, to burn.

Take $1300 and save a little more - and then, invest it in something like
a Philharmonic speaker.

----------------------------------------------------------------------------------------------------------
This is taken from a GT1 review

During an interview as part of this review of the G-Design speaker array, Barton waxed poetic (really!) about the NRC's benefits to product development across Canada for assorted businesses, including his business, speakers. You get the feeling that here sits an engineer and violinist who loves the process of creation, one who cannot contain the excitement he experiences running computer optimizations/simulations on his next vision in the NRC's world-class anechoic chamber. For example, Barton will typically change out a small part in a speaker under development and conduct a test, analyze the numbers carefully, adjust some more, then run another simulation, and so on and so on. "Seventy-eight," he offers. "I've conducted 78 optimizations thus far, developing our new high-end line, whose working title is Synchrony. We worked just as thoroughly with optimizations with the G-Design Series."

Barton further points out that the G-Design series also relied on science to determine the internal bracing points. Thanks to the use of the NRC's laser vibrometer, PSB located the precise bracing points to minimize vibrations in each of the array's cabinets, a sophisticated design, indeed. Add to that PSB's use of "blind listening" panels to refine the speakers even more, and you'll understand why the company has won so many awards.

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I have tweaked the cabinet and stuffing of cheaper type speakers from Infinity, JBL, Polk, Paradigm and PSB, etc.
The results were decent - however, the GT1 is a different league, and I would not touch it.
 
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