SOLD: Cary CAD300SE SET Mono Block amps

[michaelwjones]

 

Even more house cleaning...

 

The original Dennis Had design, single ended triode mono bocks offering 15 Watts per channel in Class A. The  unit was retubed in 2020 with a compliment of Brimar 6SL7s,  Brimar CV-378 rectifiers and Western Electric 300B output tubes. The units have no sonic or cosmetic issues and sound glorious. Minor swirls on the chrome chassis from dusting. This pair includes the original Cary amplifier isolation stands in black. These stands have spike feet and an internal platform isolated with vibration absorbing pads.

SPECIFICATIONS

- Circuit Type: Single-Ended Class A
- Power Output: 15 Watts
- Input Sensitivity: 1.5 Volts for full output
- Noise and Hum: -80dB below full output
- Frequency Response: 20 Hz to 20 KHz +/- .75dB
- Power Transformer: 1 EI Laminate, 200% Duty Cycle
- Output Transformer: 1-EI Laminate, Special Bi-Filer Wound, Air-Gapped
- Resistors: 1% Metal Film
- Capacitors: Oil-Filled Coupling, .22µF@600 VDC
- Filter Chokes: 1-1H @ 240mA, 1-10H@50mA
- Power Supply Capacitors: 2 ea - 1200µF@450 VDC
-  Weight: 24 lbs. each
- Dimensions: 7" H x 5.5" W x 19" D

 

From the owners’ manual:

 

The Cary CAD 300 SE operates in a Class A single-ended mode utilizing fixed negative grid voltage on the 300B triode output tube. The input stage utilizes a single 6SN7 dual triode tube. The output transformer in the CAD 300 SE is the most important component in the amplifier and has been specifically designed by Cary Audio for use in the 300-SE. The output transformer is an air-gap design with a commercial continuous rating of 200% duty cycle. The CAD 300 SE output transformer is an E/I laminate, silicon impregnated, grain oriented steel design. The windings are wax vacuum impregnated and the entire transformer is potted in high temperature wax. The power supply is a full wave center tap configuration running a CV-378 (heavy duty 5AR4) vacuum tube rectifier. The rectified 430 VDC is fed to a pi-L filter network. The filter capacitors consist of two (2) 1200 MFD and one (1) 100 MFD computer grade electrolytics for a total of over 230 Joules of energy storage. Each electrolytic capacitor is by-passed with a low impedance .22 polystyrene capacitor. The power transformer is also a 200% duty cycle rating on the CAD 300 SE. To avoid AC hum, both the 6SN7 and 300B tubes have DC voltage on the filaments to lessen AC ripple voltage from capacitively being coupled to the elements in the tubes.

 

 

Shipping will be expensive. These units have the original factory packing and manuals and will be shipped in four boxes: one for each amp, one for the isolation stands, and one for the tubes. The WE 300Bs come with a wooden presentation case.

 

Local pickup is fine. Please email any questions.