I recently received a pair of Sanyo SS-685 3-way (mid, sub, and tweeter) Bass Reflex speakers that have been sitting in my grandparent’s bomb-shelter basement for a very long time; years. I do not know how many, but they’ve gone completely unused for a very long time, and were used gently when they were new. Wear is minimal and limited to surface scratches and dings on the wood. I need to find a good amp for them, however, I don’t know the wattage, and there are no markings that I can see, other than “8 ohm impedance” on a sticker on the back.
I’ve tried ghetto-wiring them to my computer with a mono audio cable and some ingenuity, but the distortion is too much at even medium volumes. When played quietly, they sound fantastic, but that won’t do. I know for a fact that they work, and well, but I’m afraid I’ll get an amp that is either too powerful and damage them, or too weak and the distortion will still be unbearable at high volumes.
I plan to use them to play music moderately loudly in a large, open cafeteria at a high school during an event, so they must be able to perform at their peak power to overcome crowd chatter and excess noise, while projecting. I know a fair bit about audio wiring, but I’m a novice, so if anyone has an old manual with the specs or information, or even suggestions to alleviate my high-volume distortion problem without knowing the wattage and minimal risk to the system, I would greatly appreciate it.
I have a pair of SS-685’s. They came with a component system I bought from Sears in 1986. I found someone selling the same system on Yahoo in Albuquerque (http://www.americanlisted.com/new_mexico_31/furnit… Anyway, the DCX-685 is the tuner/amp combo they were designed to marry up to. Now, through the years, my original manual and the cabinet the system came housed in have suffered the casualties associated with dozens of moves and are, sadly, no longer with us. However, the back of the amp would have me believe that it’s 220 watts (60 Hz).
I can tell you that these speakers are fantastic for functions. I have used them to DJ junior high proms (back in the 80’s), for many house parties (through high school and college), and for reunions, wedding receptions, and various other events. When paired with the proper amp, they sound very good; especially considering the economical system this was at the time it originally sold.
You shouldn’t need to turn whatever amp you use up past the 9 to 12 spot, or about 2/3’s of the way through the volumes capacity; no need to go to 11;)
Good luck and I hope you find a suitable amp to push these.
You don’t really need to worry about power specs on speakers: They’re pretty much meaningless, and can be misleading. Once you get used to the sound of the speakers, you will easily be able to hear them distorting if you turn them up too loud. Usually the woofer will start to buzz or rattle.
The most common cause of speaker damage is from playing them with too SMALL an amplifier. This is because an amplifier, when driven into distortion, produces nasty high frequency harmonics (which sound very harsh), while tweeters are only designed to handle the relatively small amount of high frequency energy found in undistorted music. Thus, the tweeters get blown.
As an example. I had a pair of speakers designed for very high power. They were rated for use with amplifiers up to 500 watts RMS per channel, equating to 133 decibels at 1 metre. However, they were rated for a maximum 3W RMS continuous power at 20,000 Hz.!
I have two pairs of these speakers they are only rated at 100 watts. they are not made for dances and venues. they are home stereo speakers not pa speakers.I have a 300 watt amp running 4 of them they sound great at 75 watts per channel. anything more than that you are over powering them.
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