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发表于 2008-8-24 20:45:13
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原帖由 小白 于 2008-8-24 20:29 发表 
记得当年MG HEAD只是300美金的耳放,这个价格在西方基本是最低的了. 基本没有低于300美金的耳放了,更不用说是胆耳放了,这个价位对老外来说根本就是不可能做出来的. 就算500美金,在国外也属于最平价的耳放一类. 在这个 ...
我从不用補品堆砌产品! 老外卻喜欢把我的DD拿去大補!
http://www.bellaextreme.com/bella%20custom%20builds.htm
大補清单.
"Award winning legendary performance of this very musical powerhouse has been further refined with this new MK II version.
Legendary performance is now even better with improved circuit, select transformers and a tight new chassis.
True balanced inputs are now added as a standard feature. Tubes, mounted on a separate level at the top are isolated from hefty transformers for added clarity.
New bias and protection circuits have been developed for stability, reliability and more precise biasing. Dual level vertical chassis construction is stronger, better vibration controlled and occupies less floor space." Here is a comprehensive list of everything that is performed on these units. As you can see, these are very time consuming projects taking up to 30 days to complete (depending on work load) but current owners can assure you they are well worth the wait.
Reference Grade V-Cap Teflon capacitors installed in the signal path coupling stages. (16 pieces)
The capacitors are mounted using a high quality double sided adhesive tape as well as being secured with zip-ties to eliminated vibration. We do NOT use "hot glue" to secure components in our amplifier products. Inner stage coupling capacitors are replaced with V-Cap Teflon capacitors (4 pieces total).
These capacitors are securely mounted in a way that eliminates mechanical vibration as well as radio frequency interference. Mills non-inductive resistors replace the input tube cathode resistors. Mills non-inductive resistors, 16 pieces, are used for the grid stop applications. All grid stop resistors are mounted directly to the grid pin of each power tube eliminating all unnecessary wiring. It is a common practice to mount the body of grid stopper resistors as close to the tube grid as possible. Many tube amp manufacturers do not utilize this practice. All grid stop resistors are then mounted directly to the leads of the coupling capacitors and all leads are cut to minimum length. Mills non-inductive resistors, 16 pieces, are used for the screen grid applications. These resistors are removed
from their circuit mounting boards and also mounted directly to the screen grid pin of each power tube eliminating all
unnecessary wiring. High quality 5 watt Mills non-inductive resistors used in cathode ground locations. 24 pieces. Dale/Vishay 1 watt 1% non-magnetic resistors used throughout the signal path. 40-60+ pieces. The signal leads of these resistors are shortened to the shortest lengths possible Dale/Vishay 1 watt, 1% resistors are used in the bias stage in series with the coupling capacitors. These resistors are
mounted in series with the coupling capacitors and then into the bias stage circuit boards. Again, we keep all signal wiring
as short as possible. Dale/Vishay 3 watt 1%, non-magnetic resistors utilized throughout various power supply locations. All exposed resistor leads throughout these amplifiers have heatshrink applied to help reduce mechanical vibration as well
as preventing circuit shorts. The grounding layout is reworked to provide the best possible results with a dead quite background and lower noise floor. All power supply filter banks are bypassed with SoniCap Platinum Teflon units. Each power supply filter rail receives its own bypass unit. Total of 4 Teflon bypass capacitors Bybee Quantum Purifiers are installed in the B+ voltage of the power supply directly at the rectifying stage. (4 pieces total). Bybee Quantum Purifiers are installed in the input single of the single ended input. (2 pieces total). Fairchild "Ultra Fast - Soft Recovery" diodes are utilized in the rectifying stage of the power supply. The diodes are
mounted directly to the capacitors of the power supply. High quality signal wire both from the input RCA jack to the first stage of the circuitry as well as for the balanced input signal. RCA input jacks are high quality gold plated "RA Jack" RCA jacks. (optional. See notes below) High quality Neutrik XLR connectors are used for the balanced inputs. High quality RoHS compliant Silver Solder used throughout Bench tested for 2 hours Minimum 12 hour burn in Labor - 17-20+ hours per pair
EXtreme Hurricane MK II V-Cap - $12,200 pr. Output power:
Output impedance:
Input impedance:
Input sensitivity:
Frequency response:
Frequency response:
THD:
THD:
S/N:
Nominal Voltage gain:
Global NFB in dB:
Inputs:
Dimensions:
Shipping dimensions:
Net weight:
Shipping weight:
| 200 Watts (pentode/tetrode mode).
100 Watts (triode mode)
4, 8, 16 Ohms.
100kHz.
600mV
12 Hz – 41kHz. (At 1.0 Watt)
18Hz – 30kHz. (At full power)
0.3% (at 1 Watt)
5% at full power
88 dB (at full power)
50.46dB
0, zip, niltch, NONE!
Single ended and balanced
350mm., 13 ¼” W X 350mm.,13 ¼” D X 325mm., 12 ½” H
470mm.,18 ½” W X 470mm.,18 ½” D X 450mm.,17 ½” H
38 kg., 84lbs.
95lbs
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Below are a pair of EXtreme Hurricane MK II amplifiers burning in prior to being delivered to their new owner.
Click on pictures to enlarge |
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楼主
发表于 2008-8-24 20:56:47
