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Dayton Audio SA70 70W Subwoofer Plate Amplifier
Can I hook up two 4 ohm subwoofers to this amp? If so how?
Yes, wire them in series to get 8 ohms. You won't get quite as much power, but if you wire them in parallel you will end up with 2 ohms, which this amp can't handle.
Date published: 2014-03-03
Can two SA70's be setup for two channel?
I would like to integrate two SA70 powered sub-woofers into a two channel system. If this is possible, what is the recommended wiring?
Depends on how you source the signal to them, line level or speaker level, but if I understand what you are asking correctly, yes, it's very possible.Since both inputs, line level and speaker level, are stereo, and are converted to mono before feeding the subwoofer amp, you only need feed the signal into one input (right or left) to drive the amp.For example, lets say you are designing it as a subwoofer and a main speaker on each channel. You can feed the speaker output signal from your receiver or amplifier to the subwoofer amp's speaker level input, then out the subwoofer amp's speaker level output to the main speaker. Do this on both sides, and you have a subwoofer and main speaker on both sides, left and right.If you are feeding the subwoofers from a line source however, like a preout on your receiver or preamp, you will only be able to drive the subwoofers, and will need to drive the main speakers from your receiver's or amplifier's speaker output. This approach allows a bit more flexibility and less distortion into the subwoofer amps.
Date published: 2011-10-13
I have a harmam kardon avr 125 amp and on the rear there is only 1 rca jack that says pre out sub woofer how will this hook into the Dayton Audio SA70 subwoofer amp?
You may connect your sub pre-out to just the right or left input on the SA70, or you may use a "Y" adapter (referenced below) with a standard RCA cable to feed both inputs. The choice is yours. Some claim to get better results by feeding both inputs, however, in my personal setup at home, I feed only one input, and the result is quite satisfactory.
Date published: 2012-07-24
Can one plate amp drive 2 passive subwoofers?
Sorry if this is a dumb question! I have 2 wall mounted 10" subs (100W nominal). Do I need one plate amp for each sub? The picture of the connections appears to allow 2 subs to connect to a single plate amp. Appreciate the assistance!
One plate amplifier may be able to drive your subwoofers, but it depends on how loud you would like for them to play and their nominal impedance.If your subwoofers are 8 ohms each, wire them in parallel for a single 4 ohms load to the amplifier. If your subwoofers are 4 ohms each, wire them in series to the amplifier.If you find that the subwoofers distort before your preferred volume level, two amplifiers may be needed.
Date published: 2011-02-27
Are the High Level / Speaker outputs full range or high-passed at the sub-woofer frequency?
Pretty sure they pass the full signal. My opinion based on price and available power.
Date published: 2012-04-16
sin't there a volume control?
The "Gain" control effectively performs the same function as a volume control, insofar as setting the maximum amplitude of your subwoofer. When used with a standard home theater receiver, the volume control on the receiver will control the relative volume of the subwoofer, and the "Gain" setting on the subwoofer sets the maximum overall volume for the subwoofer.
Date published: 2012-07-24