The Douglas XB-31 (Douglas Model 332) was the design submitted by Douglas after the request by the United States Army Air Forces for a very heavy bomber aircraft, the same request that led to the Boeing B-29 Superfortress, Lockheed XB-30, and Consolidated B-32 Dominator.

2017年2月10日 · The Douglas XB-31 "Raidmaster" became one of four submissions passed along to the United States Army Air Forces (USAAF) during World War 2 (1939-1945) attempting to fulfill a requirement for a new long-range, high-altitude "super heavy bomber".

Here, we list Sony SRS XB31 Extra Bass speaker specs. Firstly, these data cover the unit’s length, width, weight, battery recharge time, output power, and music play time per charge. We also include the frequency response, driver size, Bluetooth support details et al.

The Douglas XB-31 (company designation of Model 332) was somewhat larger and heavier than the other three competitors. It had a high-mounted wing, and was to have been powered by four Wright R-3350 air-cooled radials driving three-bladed propellers.

Boost your party with the SRS-XB31 wireless speaker. Enjoy a 3-dimensional music festival experience, and bring the energy up with Party Booster and flashy lights. Sound effects with Party Booster.

The Douglas XB-31 (Douglas Model 332) was the design submitted by Douglas after the request by the United States Army Air Forces for a very heavy bomber aircraft, the same request that led to the Boeing B-29 Superfortress, Lockheed XB-30, and Consolidated B-32 Dominator.

2018年5月2日 · In terms of its features, size, and price, the XB31 is right in the middle. But that doesn’t mean the XB31 is lacking in strong features. The entire SRS-XB series has a number of strong shared features, most notably their ability to connect with up to 100 speakers through Sony’s wireless party chain app.