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Phil Jones Double Four BG-75 Bass Combo Amplifier, Black

Three-dimensional 70-watt bass tone from two 4-inch speakers tucked into a shoebox? Must be the Phil Jones Double Four bass combo amplifier. (3) Read 3 reviews for this product | Rate and review this product
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Phil Jones BG-75 Amp Black

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$449.95
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Phil Jones BG-75 Bass Combo Amplifier

The Phil Jones Double Four BG-75 Bass Combo Amplifier is a single channel bass amp with an incredible compact design and remarkable tone. Dual 4 inch speakers pump out a sound so huge it's hard to believe it's coming from such a small amp. The Double Four amp also features an auxiliary input for ipad/ipod, mp3 or drum machine, 3 band EQ, headphone out jack and a line out for recording. Phil Jones designed the amp to be ideal for both 4 and 5 string basses.

The cabinet of the Double Four BG-75 amp may be as small as a shoe box but it is built to the same standards of all PJB cabinets, heavily braced internally and damped with acoustic damping materials to prevent cabinet coloration that can kill the true sound of your instrument. What you hear from the Double Four is the closest you can get to how your instrument actually sounds.

The Enclosure

So how do you get huge bass sound from a small speaker cabinet? Phil Jones applied their vast experience to an even smaller driver just 4 inches across. Using their extensive R&D facility which includes the largest anechoic chamber in the bass amp industry and the KLIPPEL transducer measurement system, they were able to develop the perfect 4 inch loudspeaker.

They analyzed the neodymium magnetic system, the cone behavior at all frequencies in 3D representation, cone suspension, frame etc. until they had achieved a transducer beyond what anyone would have ever thought possible. Then Phil Jones looked at the acoustic loading using the acoustic simulation software and calculated exactly the full power cone displacement at every frequency.

Phil Jones designed a custom Rectangular Auxiliary Low Frequency Radiator (RALFR). That is a pneumatically coupled radiator loaded to the rear of the two 4 inch speakers that operates at the lowest bass frequencies only. It augments the output of the loudspeakers at frequencies from 30 to 150 Hz. It also reduces the cone excursion of the speakers allowing greater power handling.

The proprietary PJB NeoPower 4-inch speakers are full frequency range to the highest audio frequencies. Not only does this give greater clarity and transparency to your instrument but also gives a high fidelity sound to any backing track fed into the auxiliary input.

Each speaker is fed with its own Pulse Width Modulation PWM amplifier. PWM amplifiers are extremely efficient compared to more traditional analog solid state amplifiers converting more electrical energy to power the speakers instead of getting hot. Heat in electrical circuits is the enemy to reliability and since the amp is running at lower working temperature, the Double Four amp will give years of service long after other amps have faded away. By using dual amplifiers one to each speaker, the bass control is greatly improved since the damping factor is doubled.

zZounds is an authorized dealer of Phil Jones products.
- Type: Micro bass combo
- Output: 70 watts
- Channels: 1
- EQ: 3 band EQ
- Connections: Bass and AUX input, headphone out, pre-amp out
- Speakers: 2 x PJB NeoPower Type C
- Volts: 100 to 240V AC
- Dimensions (WxDxH): 8.2" x 8" x 6.8"
- Weight: 8.8 lbs. / 4 kg
Weight, Dimensions, and Manufacturer Part Numbers
Black
Shipping Weight: 12 lbs
Shipping Dimensions: 15 x 12 x 11 in
Manufacturer Part Number (MPN): Double Four BG-75
White
Shipping Weight: 12 lbs
Shipping Dimensions: 15 x 12 x 11 in
Manufacturer Part Number (MPN): Double Four White
Customer Reviews
5 out of 5 (3 ratings) Rate and Review This Product
zZounds has verified that this customer bought this product from us. "Best sound for this size. Great for playing with acoustic groups."
Overall: This is on the more expensive side but by far best sounding bass amp this size. I tried several other small size bass combo amps including...Roland Micro Cube, Warwick BC10, etc. The PJ Double four can output clean power at the lower registers. I'd say efficient enough for playing with an acoustic band. Not with drums...or at least drums at any "normal" volume. If you do place it in a corner of a room you will get a good bass boost. The Warwick came in second and MUCH better performer than the Micro Cube. The control knobs are very solid. It is built like a tank. Great feature to mute but can still use tuner if plugged in. I highly recommend if you are looking for the smallest package size bass amp. that can actually output at decent volume....and as stated in the other review you can plug in a 19v computer battery and be portable. I found the battery showed in the video will last a good 2 hours at close to max volume. You can get a case for it on the PJ website... it fits it perfectly with room for battery and cords.
Style of Music: Rock, folk, acoustic, jazz
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zZounds has verified that this customer bought this product from us. "Great little combo"
Overall: Sounds full and powerful despite the small size, and you can run it off a 19/20V laptop battery if you want to (DC power supply is external) as seen in the demo videos. It will play a 5-string's low B, but tends to get more and more quiet as you go beyond that, but it's not designed for extreme detuning, either ;) Definitely don't regret the purchase, though I do wish it came with the gig bag like its bigger brother the BG100. Oh well. I also use it with my OP-1 via the aux input.
Style of Music: metal, rock, electronic, ambient
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Our extended 45-Day 100% Satisfaction Guarantee applies on this product Buy it, and if it isn't just right for you, return it!
What Our Customers Are Saying About zZounds "I've bought several items from zZounds. I had purchased a bass amp and had to return it because of a manufacturing defect. I received a return slip and shipped it back with no problems. The shipping on a bass combo amp isn't cheap! I've even used the online chat to discuss equipment and actually talked to a bass player that gave some great recommendations on filling out the total sound of my rig. zZounds rocks and will be my exclusive gear store!" Customer on November 24, 2016
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