Response
Audio
Bella EXtreme 3205
See below for RMAF special
pricing!!
NEWS: The Bella EXtreme 3205 debuted at the 2006 Rocky Mountain Audio Fest in room 1009 with The Bolder Cable
Co. See pictures and read the comments!!.
The Bella EXtreme 3205 is the
latest, most affordable product in the Musica Bella line. They represent
what many are considering among the best value in custom built tube audio
products. The 3205 amplifiers have been Response Audio's #1 selling product for
over 3 years now. To read some customer feedback, check out our Testimonial
Page.
The Bella EXtreme 3205 amplifiers
are a Response Audio exclusive being available nowhere else in the world. The Bella EXtreme 3205 is a stereo
power amplifier based on brand new original Jolida "A" series chassis
utilizing EL34 or 6550/KT88 type output tubes for a respectable 50/60 watts per
channel.
We actually gut the
units to a point where the only thing remaining on or in the chassis is the
transformers which are already of exceptional quality. From there we completely
rebuild each individual amp one piece at a time using the components listed
below. There has always been concerns about the quality control of the early
Jolida 302/502A amplifiers and we can assure you this is no longer an issue with
the 3205 products. Response Audio now has over four hundred of these products
playing nicely in consumer's systems. To this date, we have seen less than 3
pieces in for any type of warranty work which is less than 1%. These are numbers
we can live with.
DESIGN FEATURES
Please
note that these units may contain some cosmetic imperfections in the paint
surface.
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SoniCap Platinum Teflon
capacitors used in the coupling position. |
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SoniCap Gen II film and foil
capacitors used for the signal ground. |
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Japanese Riken Ohm carbon film
resistors are utilized in the grid stop locations |
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Dale/Vishay 1 watt metal film
resistors throughout the circuit. |
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Dale/Vishay 3 watt 1% resistors
used at the beginning of the input circuit. |
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High quality Panasonic low ESR
capacitors make up the filter capacitor banks in the power supply for great
dynamic control. |
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Fairchild "Ultra Fast -
Soft Recovery" diodes used in the power supply rectifying stage. |
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Mills non-inductive resistors
used at the cathode locations. |
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Dale 3 watt 1% resistors used in
the bias stage. |
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High quality 22 gauge copper
wire used for the input signal. |
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Blue LED power indicator |
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Side mounted power switch for a
clean look. |
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Chassis: High grade steel - metallic
charcoal |
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Face plate: Solid Cherry
or Black Walnut - 1/2" thick, Aluminum (Black or Silver) SEE
BELOW FOR DETAILS |
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Tube complement: 4 pieces EL34
or 6550 / 2 pieces 12AX7 / 2 pieces 12AT7 |
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Warranty: 1 year parts and labor
/ 90 days on supplied tubes. |
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Recommended break in period: 400
hours - 90% |
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Maximum
Power Output:
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75
W per channel at 8 ohms, 1KHz (EL34 tubes)
85
W per channel at 8 ohms, 1KHz (6550/KT88 output tubes)
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Rated
Output Power:
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50
W per channel at 8 ohms, 25Hz to 70KHz (EL34 tubes)
60
W per channel at 8 ohms, 25Hz to 60KHz (6550/KT88 tubes)
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Frequency
Response:
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(at
1 watt into 8 ohms) 8Hz to 130KHz + 1dB |
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Bandwidth:
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13Hz
to 80kHz + 3dB; 0dB 50 or 60 W 1KHz |
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Distortion
THD:
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Less
than 1% at 50/60 W output, 28Hz to 15KHz |
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Circuit
Type:
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Ultra
Linear, Class AB |
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Input
Impedance:
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100Kohms |
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Input
Sensitivity:
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500mV
at 1KHz and 8 ohms for 50 watt output
600mV
at 1KHz and 8 ohms for 60 watt output
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Output
Impedance:
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4
ohms and 8 ohms |
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Negative
Feedback:
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Less
than 5 dB |
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Noise
and Hum:
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85dB
below rated output |
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Tube
Complement:
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4
pieces 6CA7/EL34 or 6550/KT88 power output; 2 pcs. 12AX7 input tubes; 2
pcs. 12AT7/ECC81 power drivers. |
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Power
Requirements:
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110V-120
VAC 60Hz 180 watts-standby, 450 watts maximum |
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Dimensions:
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17
inches wide by 15 inches deep by 7.5 inches high. |
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Weight:
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40
pounds net, approximately 48 pounds packaged. |
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Warranty:
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one
year parts and labor. 90 days on supplied tubes |
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Recommended
Bias:
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35-40mV
/ 45 mV maximum (EL 34 power tubes)
45-50mV
/ 55mV maximum (6550/KT88 power tubes)
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