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Dayton Audio SA70 70W Subwoofer Plate Amplifier

Brand:| Model: SA70
Overview
The Dayton Audio SA70 subwoofer amplifier offers exceptional performance and value, making it perfect for your next project. It works well as a replacement amplifier or as the key component in compact custom subwoofer speaker systems.
Highlights
  • Line-level and speaker-level inputs for connection to any system
  • Auto-on circuit comes on the instant the amp is needed
  • Variable 2nd order low-pass crossover from 40 Hz - 180 Hz
  • Proven performer at a low price point
Part # 
300-784
Weight: 7.5 lbs.  
IN STOCK
List Price$99.99
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Your Price
$59.60
Part # 300-784
Qty:  EA
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Product Details

Dayton Audio SA70 70W Subwoofer Plate Amplifier

With 70 watts of clean power and a full feature set, the Dayton Audio SA70 amplifier offers exceptional performance and value. A Class-AB output stage and large power supply section give this amplifier great sound quality, and enough power to drive most compact subwoofers.

The SA70's auto-on circuit and sealed rear enclosure make the amp excellent for upgraded computer subwoofers, and also for driving individual tactile transducers. Don't let the modest price tag fool you—this is a workhorse amplifier that delivers just the right amount of power.

Specifications: • Power requirement: 100-115 VAC • Measured power output: 45 watts RMS into 8 ohms @ 0.1% THD • 70 watts RMS into 4 ohms @ 0.2% THD • Signal to noise ratio: 90 dB (A-weighted) • Dimensions: 7-1/2" W x 8-11/16" H x 3-1/2" D • Enclosure cutout: 6-5/8" W x 7-3/4" H.



Dayton Audio SA70 70W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSA70
  • Part Number300-784
  • UPC844632016387
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (141 Reviews)
  • Weight7.5 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio SA70 70W Subwoofer Plate Amplifier
in the Subwoofer Plate Amplifiers product category.

Reviews

Dayton Audio SA70 70W Subwoofer Plate Amplifier
Dayton Audio SA70 70W Subwoofer Plate Amplifier is rated 4.1844 out of 5 by 141.
Rated 3 out of 5 by from Worked Great Until It Didn'tI bought the Dayton 70Watt amp to power my Aura Bass Shakers. The effect was awesome until after 6 months it stopped working. I tried everything to revive it and no luck. The only thing I can think of is that I didn't plug it into a power strip and I left it on auto all the time. I talked to Parts Express and they said they would replace it. I think I'm going to get a power strip and turn it off when it's not in use and see if I can get it to last longer.
Date published: 2014-07-17
Rated 5 out of 5 by from Economical Replacement for Blown TSS-450 amp.I purchased an Infinity TSS-450 surround system at a bargain price only to find the amp on the subwoofer was blown. After determining the main board was scorched and beyond repair I decided to try a Dayton Plate Amp. I took a chance on the 70 amp versus the 100 amp version based on some of the reviews and it was a wise choice. I left the original amps plastic "tub" in place and clipped off the original speaker wires to extend the too short Dayton wires. The Dayton Plate amp just fit into the tub of the original amp and by slightly angling the side screws I was able to secure all but the bottom two screws leaving about a 1 inch gap which I figure will aid cooling. The amp is still sealed from the rest of the speaker and the original geometry of the speaker is maintained. After hooking it up to the SUB output on my receiver I turned it on and was amazed that I only had to open the gain less than 20% to get all the bass I needed to fill the lower end of my system. I am very satisfied with this little amp.
Date published: 2014-07-15
Rated 4 out of 5 by from Its Dayton qualityBought this SA70 to ship to a friend in Greece. Parts Express does NOT ship to many European locations so I act as his middle man so he can get his Audiophile needs in Greece. Parts Express should consider shipping to these other country as there is many Audiophiles out there. If this SA70 anything like my SA100 it will be a top notch little plate amp.
Date published: 2014-06-20
Rated 4 out of 5 by from Does what it saysNo frills, basic amp for a cookie-cutter sub-woofer I bought in 2006. The original Amp finally gave up the ghost a couple months ago. Not the cleanest watts, but it only powers a 10-inch driver in a 1 cubic ft vented box. Does the job.
Date published: 2014-06-10
Rated 4 out of 5 by from like they say more suited for compact systemI'm using this sa 70 to power a pro series 200 watt rms 4 ohm 12 '' sub (radio shack) in a home built ported box . the sound is very good but the amp is lacking in power for this size speaker . It would be great for lower power speakers as stated in the description / i used the 12'' because it was there in the box for years unused on the shelf . For this speaker a 200 /300 watt amp would be great / but it sounds good so i'l stick with it !
Date published: 2014-03-31
Rated 5 out of 5 by from SA 70 Power Amp PlateI bought this amp plate to make my passive subwoofer into a non-passive.It works Great and the customer service I received on this project was also Great!
Date published: 2014-03-18

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio SA70 70W Subwoofer Plate Amplifier

I have this exact amp. It suddenly stopped working. Is it possible to purchase replacement parts (circuit boards, capacitors, etc.)??

Asked by: Kamau5
Unfortunately we do not offer replacement parts for these and they are not practical to repair. If the unit is within the 1 year warranty please contact tech support so we can see about getting it exchanged.
Answered by: MattP
Date published: 2014-05-28

I have a 12" sub from a car.  Can I hook this up to the sub, plug it into my Sony receiver with a A/V cable and have a powered sub to fill out my home theater? I got the sub for free and want a powered sub for the HT system.  

Asked by: Tridaddy
Yes this is the type of amplifier you would want to use for that. You will need to make sure the subwoofer is 4 ohms or above so the load on the amp will be safe.
Answered by: MattP
Date published: 2014-05-23

Are any of the dayton sub plate amps 2 ohm stable ? have a 8" DVC 4x4 Ohm sub id like to power

Asked by: derwoodbones
Unfortunately none of our subwoofer amps are 2 ohm stable.
Answered by: MattP
Date published: 2014-05-02

how can i wire 3 tang band W5-1138SMF's to this

Asked by: speaker freak
The only way you can safely wire three 4 ohm subwoofers to this amp would be to wire them all in series, which will only provide about 23 watts of total output power from the amplifier. You would be better off using 4 subwoofers wired in series/parallel and a slightly larger amplifier.
Answered by: MattP
Date published: 2014-04-01

Can this amplifier be modified to boost the eq curve?  Is there a published table with resistor values for given frequency and boost levels?  Thanks.

Asked by: firefox319
Unfortunately this amplifier cannot be modified in any way.
Answered by: MattP
Date published: 2014-03-03

Are there adapter plates available to make the amp fit a pre-cut hole? I have a powered that had the amp go out on it and the cut out is too big for this amp. The cut out in the box is 7-1/2''x8-1/2''.

Asked by: FreedomMaster
Unfortunately there are no plates for this available.
Answered by: MattP
Date published: 2014-01-20

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