Pioneer SP-FS51-LR crossover wiring

[tscr2015]

Hi fellow members,

This is Tom From Wells, MN. A friend of mine brought me over the speakers mentioned in the title. Said he bought them at a yard sale but they don't sound right. I check the crossovers of both of them and they are both partially disconnected. Does anyone know how these are supposed to be wired up? All they have on them is MF-, MF+, LF-, HF+, and HF- the model number on the crossover is 350-FS51-2.

Any help would be appreciated.

Thanks
Tom S.
Wells, MN

 

[Inductor]

By Andrew Jones...
The PIONEER (Andrew Jones) Speaker Thread - Officially - Blu-ray Forum
In case you need some tweeters:
https://commonmanshometheater.wordpress.com/2014/01/03/pioneer-tower-tweeter-replacement-sp-fs51-lr/
You might get the usual connectors for; input +/-, then woofers +/- (LF-, LF+), mids +/- (MF-, MF+), and tweeters +/- (HF+, and HF-). Usually + is red, unless it states different like some JBL's. This is your starting (standard) point. From here you can have some commons (connectors) like ground or (-).

 

[tscr2015]

no LF+ connection, just LF -. Where do I hook the + side of the woofer up to?

 

[Mobin]

Here is a picture of mine. hope it helps

 

[tscr2015]

thanks for that can you take a picture that shows the actual hookup to the speakers? For some reason I have extra resistors inside the tower and I don't know where they go?

 

[Mobin]

Ok give me a few minutes to take them apart i had that picture on hand. I do believe the woofer positive are in a series with the mids but i will look. The loose resistors sound suspicious what are the values? Are there any missing pieces on the crossover?

 

[tscr2015]

3.3 ohm 10% 5W wire wound connected in series to a 2.2uf 100vnp capacitor. Red wire connected to free end of the resistor. A blue wire connected to free end of capacitor.

 

[Mobin]

Well I see no resistors or caps in the wiring and none of those values in the crossover itself.

 

[tscr2015]

Ok so MF- on crossover goes to neg side of the woofers and mid and MF+ goes to Pos side of Woofers and Mid correct? So where does the LF- go? Thanks for your help with this.

 

[Mobin]

So here is goes L- goes to - on the bottom woofer.

+ on the bottom woofer goes to - on the top woofer.

The + on the upper woofer has a split connection the black wire goes to Mf- on the crossover the red wire goes to the - connection the the mid.

The mid + goes to Mf

 

[tscr2015]

perfect. Hopefully this will get this working correctly. I think the resistor and cap were added because some replaced the pioneer tweeter with a Pyle 8 ohm 200w midwoofer whatever that is supposed to be. Anyway let me get this hook up and I will report back.

 

[Mobin]

I would like to know i really like these speakers.

 

[tscr2015]

ok, might not be till tomorrow but I will get it done and report back.

Thanks again for the help

Tom S.
Wells, MN

 

[system7]

Like most commercial speakers, the crossover looks simplistic and cheap.

With well-behaved drivers you can get away with this.

This is the simpler two way Pioneer SP BS21 (What could BS stand for? Yup... ) version of your speaker.

Doesn't look hard to me, but I'd still need to see the wiring diagram aka schematic to be sure how to wire it up and get polarity on the drivers right.

See, it's a bit like asking what order you connect the spark plugs in a car engine. I'd have to see it to advise.

 

[system7]

BTW, if I had to guess what Pioneer did here, given that this is some commercial rubbish 2.5 way speaker designed to sell to people with cloth ears, it might be wired like below.

Sorry to rant. I just hate what commercial companies do to our beautiful and precise art.

 

[Inductor]

Steve, don't forget, Andrew doesn't like easy talk... He loves expensive, hi-fi, xover parts.

 

[natehansen66]

Hi Tom......sorry I don't have any help for your situation. Just wanted to say that I'm originally from your area (Faribault county). Nice to see local guys here!

 

[tscr2015]

Just to let you guys know that I got it working. It sounds good except for the Pyle PDMW5's which are mid woofers. I am wondering if that is the reason for the resistor and the capacitor to filter the high's and lows better. It seems that frequencies form the HF on the crossover are too high and making them crackle.

 

[system7]

I think you really need to post some photos if you want to make progress with this. AFAIK, the tweeter is easily replaced with the Goldwood GT520 tweeter unit Inductor pointed out.

What the Pyle woofers are doing here, I have no idea. This speaker sounds like it has had a rough repair. A wiring diagram that might work is below. The W130s are woofers. The G20SC is a tweeter. it gets a capacitor to protect it from bass and a resistor to drop the level.

I might suspect the Pioneer original woofers are 4 ohm units. Depends how they are wired really.