Note:
1. This is a pair of finished boards, the current set current is 1A (per tube)
2. This configuration heat conduction bridge angle aluminum (not a radiator), convenient for customers to connect large radiators; do not expose the power for more than 10 seconds, otherwise the power tube may be burned.
2. This configuration heat conduction bridge angle aluminum (not a radiator), convenient for customers to connect large radiators; do not expose the power for more than 10 seconds, otherwise the power tube may be burned.
HOOD JLH2003 is an upgraded work after JLH1969. It is powered by JLH1969 single power supply and changed to OCL dual power supply. It is also connected and the maximum output power is 22W (8 ohm load)
Compared with the single power supply of JLH1969, JLH2003 output frequency response curve is more straight (the frequency response curve is affected by no output coupling capacitance)
The circuit has a magnification of 13 times and is suitable for making amplifiers and amps.
Parameters:
Taiwan metal film resistor, non-inductive power resistor, ELNA-C feedback capacitor, Panasonic blue robe decoupling capacitor, Siemens coupling capacitor, Toshiba small triode
Power tube is second-hand dismantling tube 2N3055 gold sealing tube
For the best sound quality, the quiescent current is set to 1A per tube, that is, the voltage difference between the emitter cement resistor (0.1R) is 100MV.
22W pure class A power amplifier, the heat is relatively large, please pay attention to heat
Recommended input voltage, plus or minus 18VDC (optional with dual 15VAC-200W transformer rectification)
PCB size: 15.6*7.4*1.6MM
Package:
One Pair HOOD JLH2003 Dual Gold Sealed Tube Power Amplifier Finished Board
Payment Method: PayPal preferred
Shippment:
1.We provide free shipping to international via China Post Airmail or Hong Kong Post Airmail, and every parcel will be registered with tracking number. We can also ship by UPS/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let Us know before payment if you need split shipment.
2. International shipping requires complicated shipping procedures (such as both countries customs, transit stations etc.), also will be affected by many factors, such as holidays, weather conditions etc, If you have not received your shipment within 30 days from payment, Please contact us.
3.Time of Delivery:Based on the China Post Airmail or Hong Kong Post Airmail and our experience, kindly please be that that To United States / United Kingdom / Australia, it takes around 10-15 business days; To Canada, it takes around 12-18 business days; To Brazil / South America, it takes around 25-35 business days. To Italy / France / Spain / Germany/ Eastern Europe, it takes aournd 15-20 business days.
Returns & Replacements & Repair:
We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 Months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways.
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