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Technics REQ0251-1 100W Subwoofer Plate Amplifier
Novice question here but, a) are there any 2 ohm subwoofers that I could use two of them to create a 1 ohm load? and/or b) what about the subs that are DVC and each coil is 2 ohms, when wired properly this creates a 4 ohm load right? Could you make it 1?
For a DVC (dual voice coil) where each driver coil is 2 ohms, you can wire in parallel and the total load is 1 ohm. Parallel means connect the two positive driver posts together and connecting them to the positive amp lead. Wiring in series means connecting one positive driver post to one negative post forming a chain of speaker coils, doing two 2-ohm coils in series way results in a 4-ohm total load.
Date published: 2014-03-01
RMS wattage at 4 ohms? 2 ohms?
The average "non transformer" outputs supply around 75% efficiency. That's a real general rule of thumb. At 1ohm #a rare power load# rating, the amp delivers 100watts. So, at 2ohms approx. 70watts, at 4ohms approx. 50watts. Still--This is a lot amplifier at this price point!
Date published: 2013-11-05
Building an active sub
Can this unit be used to convert a passive sub into an active one?
Yes, your subwoofer system will be "active". The power rating into 1ohm is 100 watts. If you use multiple speakers in your box design, this will drive em'. If you have only one--there will be less power developed. How much less depends on the impedance load and how the amplifier is designed. Should be really good for home HiFi though.
Date published: 2013-10-15
D-type Power Cable
Do you guys sell a D-type power cable? A search on your website only brings up 3 more devices that require one.
Unfortunately we do not offer a D style power cable at this time.
Date published: 2013-11-05
Since this unit was used to power 2 subwoofers, does that mean there are 2 leads for 2 subwoofers? My plan was to power 1 10" Dayton woofer, but i'm curious if this amplifier plate will require you to use 2 subwoofers to get the most wattage out of it.
This amplifier has a single output that was daisy chained from one subwoofer to the next in parallel. You can get the most wattage from this amplifier by using a 1 ohm load. With 4 ohm drivers this means you will need 4 of them wired together.
Date published: 2013-12-26
I have a pair of Peavey 8 ohm 15 inch speakers looking for a home ... can I use these amps to power them? Thanks,
This amplifier will only produce about 25 watts into an 8 ohm load, or about 50 watts into a 4 ohm load if you used one on a pair of those woofers. It will power them, but they will be very limited.
Date published: 2014-02-21