|
 Response
Audio
Bella EXtreme 3205 MKII Platinum
NEWS: New
for 2007, the MKII Version of the Bella EXtreme 3205. After 2 years of R&D
on a new input stage, we have come up with a "Modified Mu" input stage
optimized for use of the 12AU7 tube.
The Bella EXtreme 3205 MKII Platinum 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. Now with the new MKII version, we have been able to
provide even lower distortion and a more linear response.
The Bella EXtreme 3205 MKII Platinum
amplifiers
are a Response Audio exclusive being available nowhere else in the world. The
Bella EXtreme 3205 is based on brand new original
Jolida "A" series chassis utilizing EL34 or 6550/KT88 type output
tubes, your choice, for a respectable 50/60 watts per channel. These
amplifiers are custom build to order with an average turnaround time of 10 days
depending options requested and current work load.
Please note that the chassis used to
assemble these products may contain slight cosmetic blemishes in the paint
surface.
DESIGN FEATURES
-
SoniCap Platinum Teflon
capacitors used in the coupling position.
-
SoniCap Gen II film and foil
capacitors used for the signal ground.
-
Mills non-inductive
resistors are utilized in the grid stop locations
-
Dale/Vishay 1 watt metal film
resistors throughout the circuit.
-
Dale/Vishay 3 watt 1% resistors
used at the beginning of the input circuit.
-
High quality Panasonic low ESR
capacitors make up the filter capacitor banks in the power supply for great
dynamic control.
-
Power supply filter bank
capacitors bypassed with high voltage SoniCap capacitor.
-
Fairchild "Ultra Fast - Soft
Recovery" diodes used in the power supply rectifying stage.
-
Mills non-inductive resistors used
at the cathode locations.
-
Dale 3 watt 1% resistors used in
the bias stage.
-
High quality 22 gauge copper wire
used for the input signal.
-
Blue LED power indicator
- optional.
-
Side mounted power switch for a
clean look.
-
Chassis: High grade steel -
metallic charcoal
-
Face plate: Solid Cherry or
Black Walnut - 1/2" thick, Aluminum (Black or Silver) SEE
BELOW FOR DETAILS
-
Tube complement: 4 pieces EL34 or
6550 / 2 pieces 12AU7 input tubes / 2 pieces 12AT7 driver tubes
-
Warranty: 18 months parts and labor /
90 days on supplied tubes.
-
Warm-up time: 10 minutes
-
Recommended break in period: 400
hours musical signal - 90%
-
This is a temporary manual that contains very important
information including unpacking and setting up your unit, biasing procedure
and warranty. New manuals will be posted soon in a printer friendly PDF
format. PLEASE NOTE: The 3205 MKII can NOT use any other input tube
other than the 12AU7. Doing so could result in damage to your amplifier that
would not be covered under warranty.
Bella
EXtreme 3205 MKII manual
-
For those who have the new Bella
EXtreme 3205 Signature or our original Signature or Reference 3205 amplifiers, we will also leave the
manual up for these units as well.
Bella EXtreme Signature 3205 manual
Notes:
- All prices are in U.S. Dollars and do not include shipping costs.
- Bella EXtreme 3205 amplifiers available for sale in the US and Canada
only.
- Sales tax for orders to be delivered in New York will be determined on
the shipping address.
- Please contact us for special system prices when interested in ordering
additional products along
with your Bella EXtreme product.
- All prices & specifications are subject to change without notice.
- Please note Response Audio is NOT responsible for user installed NOS or
current production tubes.
Only tubes supplied with the unit are covered under our warranty.
- Warranty is transferable to the first "second owner" only.
- Warranty is void if any unit is tampered with or modified in any way.
The picture below shows a custom
Signature 3205
that debuted at RMAF 2004 powering the Daedalus DA-1 loudspeakers.
SONIC
EXPECTATIONS
of the "Signature Series" Jolida 3205
Statements below are based on customer feedback.
The Bella EXtreme 3205 MK II by Response Audio has a more coherent presentation
The
background is dead quiet with a low noise floor
Exceptional
transparency
Enhanced low level resolution.
Much better
precision with a seductive, smooth midrange than competing products
Exceptional inner detail retrieval
Even more
dynamic authority.
Imaging is
very focused with a soundstage you can walk into.
Smooooooth
& refined.
Ordering
Information
At this time,
all Bella EXtreme 3205 amplifiers are built upon ordering and take
approximately 10 days to complete in most situations. This time will
depend on current work load and number of orders.
The Bella
EXtreme 3205 amplifiers are available only as a limited number of units
being produced each month.
To order your
Bella EXtreme 3205, please feel free to call or email.
SPECIFICATIONS
|
Maximum
Power Output:
|
75
W per channel at 8 ohms, 1KHz (EL34 tubes)
85
W per channel at 8 ohms, 1KHz (6550/KT88 output tubes)
|
|
Rated
Output Power:
|
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)
|
|
Frequency
Response:
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(at
1 watt into 8 ohms) 8Hz to 130KHz + 1dB |
|
Bandwidth:
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13Hz
to 80kHz + 3dB; 0dB 50 or 60 W 1KHz |
|
Distortion
THD:
|
Less
than 1% at 50/60 W output, 28Hz to 15KHz |
|
Circuit
Type:
|
Ultra
Linear, Class AB |
|
Input
Impedance:
|
100Kohms |
|
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
|
|
Output
Impedance:
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4
ohms and 8 ohms |
|
Negative
Feedback:
|
Less
than 5 dB |
|
Noise
and Hum:
|
85dB
below rated output |
|
Tube
Complement:
|
4
pieces 6CA7/EL34 or 6550/KT88 power output; 2 pcs. 12AU7/ECC82 input tubes;
2 pcs. 12AT7/ECC81 power drivers. |
|
Power
Requirements:
Fuse:
|
110V-120
VAC 60Hz 180 watts-standby, 450 watts maximum
5A Fast-Blo |
|
Dimensions:
|
17
inches wide by 15 inches deep by 7.5 inches high. |
|
Weight:
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42
pounds net, approximately 48 pounds packaged. |
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Warranty:
|
one
year parts and labor. 90 days on supplied tubes |
|
Recommended
Bias:
|
35-40mV
/ 45 mV maximum (EL 34 power tubes)
45-50mV
/ 55mV maximum (6550/KT88 power tubes)
|
Bella EXtreme MK II Manual |
