Question about Pyramid Car Audio & Video
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Posted on Jan 02, 2017
SOURCE: CAN PYRAMID PB-772 BE BRIDGED
i cant find a whole lot of information on that amp or any other older pyramid as they arent exactly the most popular amp but just applying what i know about amplifiers in my opinion i think the amp is more than likely only stable @ 4ohm when it is bridged and @ 2ohm in stereo (using both channels) so yes you should be more than likely able to bridge it because the impulse only came in 4 and 8 ohm voice coils and i dont think they made a dvc impulse so check the sub paperwork . if you dont have the paperwork look at the sub and check for it or get the model number and ill be able to tell you what the ohm rating is on it and remember if u decide to bridge it be carefull not to turn the gain up like it is the volume controll. it should typically be set under half way but you maybe ok going up to 3/4 but i am not sure how it will sound @ that level so if its not loud enough after that you should consider getting a slightly larger amp ( a good rule of thumb that i have found is that the subs rms specification should only be 2/3 of the totall rated rms output at the ohm load that the speakers or speaker are as this should allow u all the spl you want without really heating up your amp and if u ever buy new subwoofers you have more power left in the amps output capabilities because when u buy new subs it is usually to upgade in quality which usually requires more wattage and youll have it
sorry my answer is so long . if u have any problems pls feel free ask me
and again you should be very capable of bridging it just find out the ohm load for the impulses voice coil HOPEFULLY it is an 8 ohn because when bridging an amp it halves the ohm rating on the sub
sorry such a long answer but i just wanted to cover as much as i could in case you have any problems if u have wiring questions or want to see a wiring chart go to www.the12volt.com for all kinds of excellent information charts wiring wizards and here is the link to the subwoofer wiring wizard
thanks for letting me try to help out and god bless
Posted on May 22, 2009
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