how to improve QSI sound

Replacing the speakers might be the best cure. More battery power would only give you louder sound & possible more distortion, and a second speaker may drain the battery power too quickly.

 

Lee Fritz

Thanks phillyreading, about what I was thinking.

Anyone know what speakers to use?

 

You can replace it with most any speaker or speaker combination that will fit,equal to or greater ohm value as the original. The value is usually stamped on the back of the speaker,usually 4,8 or 16 ohms. (omega sign) If not, measure it with a meter .

 

here is an article on loco upgrades

 

LINK

 

Dale H

You might to think about the better speaker, until you verify the board works right.  The capacitors on that board can be going bad/are bad.

 

In this case your trying to bring a 90's device up to current standards and that isn't going to happen.

 

A new basic speaker will tell you if the static is from a bad speaker, or capacitors going bad on the board.  G

It has a mobitone  8 ohm speaker rated at 0.2 w. Can someone recomend a good replacement?

Thanks

I have worked with many of those.  Back in the day, the sound was nothing to write home about. It was a great product then.   Please read the comments George (GGG) made as they are very true.  Remember, you can't shine a sneaker.  It is what it is.

I'm very interested in this topic as I have a Proto 1 Premier Nickel Plate Berk I'd like to upgrade the sound on too.

Also I was wondering of you can upgrade Lionel Railsounds 4 and 5 with newer speakers or even the daul "fat boy" speakers.

QSI:

 

Learned that for my ears, the sounds provided by today's OSI decoders isn't up to the quality being produced by Soundtraxx, Loksound, WOW, etc. I have QSI-based sound decoders that are factory installed in BLI switchers... and if it weren't for the expense of converting them to another brand, I would do so.

 

Best of luck in your efforts!

 

QSI and PS-1 used 8 ohm speakers.  So pick any newer speaker with 8 ohms or a combination that gives 8 ohms.  2 4 ohm in series or 2 16 ohm in parallel, that can fit your enclosure.

 

Most are 50mm round with about 17mm height.

 

But I would look at changing capacitors before I bought a $16-20 speaker only to be still displeased.   G

One thing about old sound systems.  They are just that,  old sound systems.  The systems available today are much better.  The systems ten years from today will make what we have today out dated.  I have my favorite systems and some that are nasty.