Sony FH 110WX

Need help - I recently bought a Sony FH component system FH 110WX but it did not come with speakers. I want to connect speakers to it but it has this type of connection in the back. Anyone know how I might get a hold of this type of connector?

It appears this system is bi-amp, so 2 connections per speaker.

Thanks!

You can try and source through mouser or digikey by searching for 4-pin connectors but be prepared to wade through like 10,000 choices. Additionally, sometimes the photos aren't clear and then you'll need to click on the Mfg's data sheet (usually linked at the catalog page where you view the product). It's tedious and definitely a pita but honestly, since you don't have the original speakers for which those connectors were intended, then you might as well retrofit some standard connectors at that location. Could be banana or rca or the spring/push clips commonly used in most speaker outs. All depends on how much room is there exactly. You can even make your own adapter by installing common speaker clips on a small project pcb and wire them up to header pins soldered to the bottom side of the board. The whole pcb adapter can then simply push into those 2 connectors if you have the pins lined up right. The downside is more work to do like this. The upside is no modification to the original unit although on the other hand, what are the chances of locating original speakers?

Thanks Norm! I've already started searching but you're right, specs (especially relating to size) is hard to come by and the pictures are not always clear. I think I'll go the option of retrofitting with regular speaker connector clips. I think there is next to zero chance I'll find the original speakers and zero chance I'll find the handle. So I am planning on just using this as a table top mini stereo at work. It's a nice looking little system and I lucked out by finding the CD player for this as well.

Question: as mentioned these are bi-amp speaker connectors - is there a concern with just making them a two wire connection rather than 4 wire per speaker?

Not sure that I understand your intentions. In general, if you are asking whether you can bridge the low and high fz outputs together to come up with a single set of outputs, the answer is no. The reason is that there are probably 4-amplifiers, 2 for the low frequencies and 2 for the high frequencies. The low frequency outputs will have far greater output capability than the high frequency outputs and additionally, these FH's usually use bridged amplifiers which employ floating grounds. Connecting the grounds together may be disastrous. The exception is if the low/high outputs are actually from the same amp but just filtered through a passive crossover internally so that the drivers can be connected externally without the need for crossovers but this is highly unlikely. After all, if passive crossover components are used to separate the lows/highs, then those components would more simply be installed inside the speakers themselves.

However, that being said, IF the low frequency outputs (main amp) is unfiltered, then you CAN simply use that one output to power your speaker system. You'll lose the high-outs but that generally is only a few watts since it doesn't take much to power a set of tweeters. I don't have a service manual for this model to check and verify so I can't really advise there. IF however the signals were filtered before the amplifiers, then the low outputs probably will not have any highs mixed with them the speakers might sound bland if that is the case. I think I might have one of these new in box somewhere in storage and if so, then I probably have the instructions manual which might help clear some of this up. When I get the chance, I'll look into it.

Norm, yes that is exactly what I was wondering. Sorry my question was not clear. But now I have my answer, don't bridge the two outputs. Thanks!

Hello. This is very complicated amplifier.
Look on red circle on next images:





This pictures are from Sony FH-77 service manual:
https://elektrotanya.com/sony_fh-77_sm.pdf/download.html

Similar problem here:
http://www.hifi-forum.de/viewthread-84-18663.html

http://forum.videohifi.com/discussion/176601/boombox-sony-fh-77/p1

Wow! Thank you, goodman!

Done. I wish I had color coded speaker connectors but this is what I had on-hand so I went with it. And it fits nicely. Thanks for the help!

Nice job. Looks like factory.

Well, heck. Serves me right for not even checking... looks like I had this service manual all along.

Here's some details about that feedback function. Apparently, the woofer in this system provides feedback regarding cone movement to a AMFB chip that allows the system to maxmize the amount of bass to the speaker. A smart speaker (or system) if you will. Since you have no plans to connect the original speakers for which that feedback system was designed, and since like I mentioned earlier about if the main amp outputs an unfiltered signal (it does), then you can just connect like normal using the 2 main outputs and ignore the feedback connections (looks like you already did).

milosancho, do you use this connections (look picture)?
1. Left +
2. Left ground
3. unused
4. unused
5. Right +
6. Right ground
7. unused
8. unused

Goodman I believe I did use those outputs. I tested both outputs for each speaker and found the low frequency outputs for each and that's what I used. The sound is good although I don't think I'm getting the highs that this unit would normally put out, but still sounds good. The original speakers for this unit are 3-way speakers and I am using 2-way Sony speakers (they are actually speakers from a Sony FH-7 model) so they are a good match. This will be my work set-up, I'll post pics when everything is together and working. Now I just need to get the turntable working properly, finding those tiny belts for the Sony PS-Q turntables is a challenge.

This is good news. I 'm glad that I can help you with advice.
I waiting for pictures when you is ready.