Odd Watt Audio ” Oddblock “

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 L’amico Luigi ha perfettamente costruito questi finali copiando il kit Odd Audio , monofonici di alto livello , classe A , in questo caso montano due KT88 ogni finale per una potenza di 25 watt , possono montare altre valvole , KT90 o 6550 senza bisogno di intervenire nei componenti interni , ma semplicemente regolando il bias da sopra con lettura digitale del livello con strumenti onboard.

Mentre possiamo montare anche le valvole KT77 – 6L6 – El34 sostituendo la resistenza * come segnato nello schema sotto.

 

Dal sito ufficiale:

 

OddWatt Audio is proud to announce the long awaited arrival of our OddBlock High Output Series 1 or OBHO mono block single channel power amplifier kit.

The OBHO shares most of the OddBlock Series 2 Octal’s highly regarded schematic design and performance specifications with a few very large exceptions. Two of these being the use of TUNG SOL’s monster KT120 power tubes generating a thunderous 45 watts of pure class “A” power @ less than 2% THD and having a maximum output of 55 watts. Class “A” mode of operation being forced by the use of a constant current source in the output stage.

Adding to the quality, the OBHO also features the same NOS 12SL7GT as the ODDBLOCK Series 2 OCTAL in the driver stage. The OBHO’s deliver outstanding power and exhibit superior sonic qualities delivering clear, deep and very articulate mids and highs with a huge sound stage with incredible performance and control being heard in the low frequencies with sub audio response which is flat to 10HZ. The OBHO’s are capable of driving difficult load loud speakers such as electrostatics that exhibit a highly capacitive load like Martin Logan Vistas as well as more conventional speaker systems with ease.

The OBHO kits are a mono block or single channel amplifier with two kits being required for stereo operation.
Although the OBHO uses the KT120 for maximum power output, the OBHO can be used with alternate octal base power tubes such as the 6550, KT88 and KT90’s. With a flick of a switch and a quick tube balancing operation you are ready to enjoy. The use of the mentioned alternative power tubes will yield a maximum output of approximately 25 watts verses the 45 to 55 watts output with the KT120 power tubes. We are very pleased with the listening results using the JJ KT88 power tubes in these amps.

Like the OddBlock Octal’s a feed back loop defeat switch is also provided for the purist at heart. OBHO utilize a very low amount of feedback, generally 3-4 db so switching to feed back defeat position can be slightly heard. We have found with these amplifiers that the use of 0 feed back results in a very pleasing result in some circumstances so we encourage experimenting with your system. Low noise, low distortion and maximum bandwidth were foremost in the design of these amplifiers. Power output was secondary but with the availability of the KT120 power tube we feel a very respectable level of both fidelity and wattage has been achieved with the OBHO design.
Most contemporary amplifiers seem to be involved in a horse power race. Bigger is better seems to be the mantra. Often sound quality in the lower power levels is sacrificed to get greater output. All OddWatt kits are designed to deliver optimum response at actual listening levels which are often only a few watts.
A feature that many will like is that when overdriven the amplifiers overload gracefully. There is no sudden massive distortion as is common in many solid state amplifiers. The OBHO comes complete with all parts to have a fully operating amplifier kit when completed including a metal top cover. We do recommend using the top cover as the KT120 power tubes emit a large amount of heat. Serious burns can result from contact with these tubes while the amplifiers are in use so please be careful.

Di cosa si tratta: Finali monofonici

Produttore: Odd Watt Audio Usa

Caratteristiche: 25 watt classe A

Costo:

kit originale 1095 $ ogni finale

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Odd Watt Audio ” Oddblock “