(Topic ID: 20492)

Stock Stern speakers vs FF (Frequency Response)...

By asnatlas

11 years ago

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    #1 11 years ago

    Does anyone know what the Frequency Response is for the stock speakers and FF ?? For the 4" backbox and 8" woofer ??

    #2 11 years ago

    Pretty sure FF uses this one:


    Goes down to 55hz.

    I use this one in my sterns, goes to 35hz


    The stock stern cabinet speaker is a full range turd. Not sure about back box speakers.

    #3 11 years ago

    LOL, I was debating on some Dayton Audio from parts-express.com... I wanted to see how the prices compared to FF...

    #4 11 years ago

    I am actually about to write up a huge "how to" on this. But in short, you can use this:

    For your sterns, you will need to cross them over. This is a 6db 100 hz low pass inductor:

    You wire it inline on the positive side (one side goes to the + term on the speaker, other goes to the striped speaker wire.

    But it's still not enough. You now need to be able to increase the bass volume. This is done by lowering the cabinet speakers. You can either wire in an L-pad vol control such as this:

    I tested these three things in my iron man compared to flipper fidelity sub set up and could not tell the difference.

    #5 11 years ago

    Sweet, thanks for the info markmon Please link your huge "how to" once you have it pls...

    #6 11 years ago

    Actually the speakers that turbo20lbs pasted will also work. I think that for the money I use the amazon one plus I have prime so 2nd day shipping is free.

    #7 11 years ago

    Parts Express is out of the high efficiency speakers that we like. MCM has some decent ones. I have not installed the 8" speakers yet, but I like their specs. Key is the use in a vented enclosure and high efficiency. For whatever reason, paper cones seem to bring the best results.


    and for AC/DC

    This was a very nice upgrade, made a big difference to the sound. No tweaking to the backbox needed.


    #8 11 years ago

    Bump For the write up

    #9 11 years ago

    Some of the speakers linked here are 8ohm some linked here are 4ohm what does stern use?
    AC/DC pro does it use a 12” speaker or a 8” speaker?

    #10 11 years ago
    Quoted from pinballlooking:

    Some of the speakers linked here are 8ohm some linked here are 4ohm what does stern use?
    AC/DC pro does it use a 12” speaker or a 8” speaker?

    The 2030 amp used in the Stern SAM system is a 4 ohm capable amp. You can use a 4 ohm sub if you wish. I believe the FF subs are 4 ohms.

    #11 11 years ago
    Quoted from markmon:

    The 2030 amp used in the Stern SAM system is a 4 ohm capable amp. You can use a 4 ohm sub if you wish. I believe the FF subs are 4 ohms.

    When is the write up?

    LONG overdue in this hobby.

    #12 11 years ago
    Quoted from AkumaZeto:

    When is the write up?
    LONG overdue in this hobby.

    Sorry, I haven't forgotten. Give me a few more days. I want to make sure all the info is right when it comes to best for the prices and want to make sure it all applies to XMEN LE that should be here tomorrow or Thursday.

    I did do a big write up on ACDC just now:

    #13 11 years ago

    I've used Coax speakers in the backbox and they sound great.

    Keep in mind, depending upon the game, having a wider frequency response may be moot since the sound files are often compressed and clipped beyond certain frequencies.

    #14 11 years ago
    Quoted from AkumaZeto:

    When is the write up?

    LONG overdue in this hobby.

    Although it's only part of it, theKorn has a great guide that got me started on speaker selection and backbox speakers...


    After that and a little more research, I was able to start doing upgrades myself. For my upgrade, which was only the sub, I think I paid about $90... but it was enough for two and a half machines. I've only done one so far, but if I ever stop being lazy I'll probably swap out my Iron Man kit that came installed with it with mine instead.

    You do have to figure out some stuff for sure, so the FF kits are nice if you don't want to do that.

    #15 11 years ago

    Thanks for the info all

    4 months later
    #16 11 years ago

    I think I am going to upgrade the sound on my TRON Pro soon...

    I am going to pick up the Dayton Audio SA100 100W Subwoofer Plate Amplifier (http://www.parts-express.com/pe/pshowdetl.cfm?&Partnumber=300-802&scqty=1) that markmon recommended.

    I am looking at these Polk Audio DB401 4-Inch Pair Coaxial Speakers (http://www.amazon.com/gp/product/B000P0R6GQ/ref=ox_sc_act_title_2).

    And debating on one of these two 8" woofers:
    Dayton Audio DC200-8 8" Classic Woofer (http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-310)
    Dayton Audio DA215-8 8" Aluminum Cone Woofer (http://www.parts-express.com/pe/showdetl.cfm?partnumber=295-332)

    I know that the 100W amp will provide the largest improvement but was debating if I should upgrade the speakers over stock. Would I notice a big improvement with what I have selected above ??

    #17 11 years ago

    Reply from markmon:

    The amp is overkill on tron. On acdc you have a 12" sub that the 18 watt amp, running 12 watts due to 8 ohm load, just cannot handle. On tron, a cheap 8" 4 ohm sub, inductor, and lpad is all you need. The internal amp can handle an 8". Also the stern 8" really suck and need to be swapped out. In the acdc prem, the 12" they provided was decent but under powered. You could buy a FF or pinball pro sub kit for this or build your own for half price.

    If you build your own, you need three components. And this will work for any stern:
    1) improved 8" sub. These work well and are under $20 shipped. They're decent and super efficient. Even though they are 8 ohms, the extra efficiency more than makes up for the impedance. http://www.amazon.com/Pyramid-WH88-8-Inch-Power-Subwoofer/dp/B000CQEIZ0/ref=cm_cr_pr_product_top

    2) a 5 mH inductor is a good crossover. This will cut all the ugly mids from the sub letting it just crank bass. Just wire inline on the + terminal of the speaker. Wire to one end of the coil, other end to the + term of the speaker. Not directional. This $14 part will do: http://www.parts-express.com/pe/showdetl.cfm?partnumber=255-060

    3) a vol control so you can lower the backbox volume increasing the bass. This lpad will do. It's under $10 and has wiring instructions on the box. To wire it you will need to solder the speaker input wires onto it and run new wires from this to your backbox speakers. http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-250

    3a) if you don't want an lpad you could just reduce the backbox with a resistor. A 30 ohm matches my taste. This is easier to wire than an lpad and is cheaper but it doesn't allow any flexibility. To wire this just put it inline on the + term of your speaker. The trick is in how the right speaker is wired. You'd have to make sure the resistor is used before the right speaker to pad them both. It's actually easy though. This option is about $1 compared to the lpad and is generally what I use http://www.parts-express.com/pe/showdetl.cfm?partnumber=004-30

    #18 11 years ago

    markmon, You have linked to different subwoofers above...

    Legacy LWF8X - "L" Series - 8" 300 Watt 4 Ohm Car Audio Subwoofer

    Pyramid WH88 8-Inch 250 Watt High Power Paper Cone 8 Ohm Subwoofer

    I checked my TRON PRO and it has a 4 Ohm stock...

    I was reading the Product Description on http://pinballpro.net/shop/stern-late-sega-pinball-machines-swtr-4/ talking about "Kits using 4-Ohm automotive speakers can cause overload to the amplifier if run in parallel (2-Ohms) or lose 2db of high frequency sound if run in series. Don’t risk damage to your sound card with kits using 4-Ohm speakers."

    I was also curious about the http://pinballpro.net/shop/high-energy-upgrade/ which has a 50% larger magnet...

    9 months later
    #19 10 years ago

    Where is the source audio come from? Can you jut by pass the whole stern amp system and wire in your own amp and speakers


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