Pioneer SX-727 -- Do I Need AKM-003 (Speaker Plugs)???

djgps

djgps

New Member
I recently found an otherwise mint condition SX-727 at an estate sale, but it does not have the speaker plugs that would be used to affix/attach speaker wires into the back. I tried just sliding 16-gauge copper wire into the slots and running it out to the Scott cabinets that I bought from the same estate sale. Since the 16-gauge wire is thick enough, I was able to anchor it to the entertainment center itself with some handy Bluelounge Cable Drops, and it's as secure as an RCA cable just about. The result? No sound. Do I need the AKM-003 speaker plugs (or an OEM version of them) in order to get audio out to my speakers? If not, is there something else (cheaper and/or easier) to ground the speaker wire in order for it to produce sound?

Unfortunately, I got an earful of hearing damage when I plugged in my DJ headphones with the volume knob about 1/3 of the way up, which tells me that this receiver has raw power when the muting and filters are off.
 
Register to hide this ad
As long as you are getting a good connection with the wires it should work. Make sure the speaker selector is in the correct position.
 
The connections are oriented VERTICALLY for each speaker. The upper is POS and the lower is NEG. I have a feeling you may have had the speaker wires oriented horizontally. Or you had the speaker switch set wrong. Hence no sound from the speakers, but blowing out your ears with the headphones.

Pioneer2B.jpg

Picture courtesy of AK'er "OERETS".
In the above picture, the yellow plugs are in the "C" speaker connections, Right and Left. Note the verical orientation of the plugs.

Larry
 
Last edited:
As the above picture shows, if the 727 has the pre out and main in plugs make sure those are there. If the jumpers are not there, rca cables will work.
 
Thank you so much for all the suggestions and advice. So after re-routing it, I'm only able to get the left channel to work. Since the speakers are also "new" (meaning I wasn't sure if they worked or not), I ran the left channel from A+C into the two speakers and panned the balance all the way to the left and was able to get an extremely muddy sound out of both speakers. Using my headphones, it is only the left side that works as well. Could this be a blown fuse in the receiver, or am I just unlucky and found a mint-looking receiver that is more work than it's worth? I'm eager to test out the Scott S2 speakers today using a different receiver (one I know works and am familiar with the output, probably my Onkyo), because the word on the street was relatively negative on Scott for loudspeakers, but after searching around, there isn't much data on the S2s and they just *look* awesome. Ok, just to recap: any ideas on why only the left channel would be working? Was this my first unsuccessful pick in 20+ years of garage sale/thrift shop treasure-hunting or is the SX-727 truly worth the effort to try and repair? Thanks again in advance for everyone's help so far.
 
Clean the fuses on the back and the holders. Meter the fuses and replace as necessary with the CORRECT Amperage.
Disconnect the speakers and plug in your headphones. As they are BEFORE the Speaker Selector switch, they won't be affected by the switch. If you get sound, as you alluded to in the 1st post on both channels, then the selector switch needs to be cleaned, possibly multiple times with DeOxit.

At least tin the speaker leads to prevent "Irish Pennants" and shorting of the leads and get a couple of the AC Plugs and modify them to work as above.

the 727 is the NEXT TO TOTL in the series (x2x) and is worth the effort.


Larry
 
Clean everything with DeOxit. A dirty balance knob can cause one side not to play; been there, done that. Dirty switches can do things you would not expect.

Have a 727 saved from the side of the road. Selector switch is snapped off and stuck on the headphones. Sure sounds good though. Love the look. Likely to just hard wire one of the speaker selections eventually.
 
jhtstone; Contact Danny @ y'day's Audio (see sponsor banners below at bottom of page). He may have a 727 speaker selector.

727 manuals, schematics, brochure, and possibly(IIRC) reviews HERE!! Scroll down to SX-727 and download.

Larry
 
I have used regular 2 prong AC plugs and took pliers and bent one side vertical and stripped the wires. It works in a pinch. The newer plugs are to big unless you clip down the male inserts to fit the slot, but vintage two prong cords work great. larryderouin's idea is even better. I am going to have to make me some of those. :yes:
 
Not my idea. I copied the picture from the link in POST #3 by 69sixpackbee. I've done it and it works very good. You do have to cut the end off just past the hole in the blade. Trim it back with a dremel and round off the end.

Larry
 
larryderouin said:
Not my idea. I copied the picture from the link in POST #3 by 69sixpackbee. I've done it and it works very good. You do have to cut the end off just past the hole in the blade. Trim it back with a dremel and round off the end.

Larry
Click to expand...


Sorry about not giving credit where credit is due. I should have read more instead of just looking at the picture. :D
 
daveyh said:
I have used regular 2 prong AC plugs and took pliers and bent one side vertical and stripped the wires. It works in a pinch. The newer plugs are to big unless you clip down the male inserts to fit the slot, but vintage two prong cords work great. larryderouin's idea is even better. I am going to have to make me some of those. :yes:
Click to expand...

I picked up two 12' two prong foot extension cords for $5 at the local goodwill. Nice heavy guage cable and it worked like a charm. They fit very securely if you are carefull when trimming the prongs.

Thank you for the idea
 
You must log in or register to reply here.
Back
Top Bottom