Features And Specifications

Manley SNAPPER®

Read the Snapper OWNER'S MANUAL ON-LINE!

(and here are some quick notes that don't necessarily agree with the manual)

100 Watt partial triode (UltraLinear) EL-34 output stage is tolerant of a wider
variety of output load conditions than pure pentode.

Precise and balanced signal path from input to output. Circuit
self-balances with either single-ended or balanced inputs. [Don't let
either speaker terminal contact chassis, earth or any other ground.
Otherwise there could be fire ;^} 

Switch-selectable RCA unbalanced inputs, or XLR balanced inputs. RCA
jack input impedance about 330Kohms, XLR 15Kohms. If one
input is not occupied, the input selector switch may then be used as a
poor-man's MUTE switch. Handy for checking the bias, swapping input cables, etc..

Input Sensitivity RCA jack: 750 mV RMS for full output into 5 ohms
Input Sensitivity RCA jack: 71 mV RMS for 1 watt output into 8 ohms
Input Sensitivity XLR jack:  1.5 V RMS for full output into 5 ohms
Overall voltage gain RCA jack to Output: 31 dBu, or about 32 volts per volt.
Signal to A-weighted noise ratio on Humberto's bench is about 110 dB.

Damping Factor: 4.7

All-balanced amp topology keeps B+ voltage variations from degrading
the performance of the input and driver stages. This technique can
help make a push-pull amplifier very revealing of signal detail, in
part by canceling power-supply-related perturbations and increasing
signal-to-noise ratios.

Portly 180 Joule energy storage reservoir in the main B+ supply
channel for explosive transient response and athletic musical stamina.
Also reduces B+ fluctuations due to varying current demands of output
stage [duh].

Wideband transformerless balanced input with switchable bridged
15Kohm or terminated 600 ohm input impedance. Balanced input
sensitivity may be selected by changing one resistor to suit whatever
operating level may be required. 0 dBu, +4, +8, etc... If desired, the
user may safely ground either pin 2 or 3 for single-ended drive of the
balanced XLR input... [Be careful NOT to drive pins 2 and 3 of the XLR
with a large common-mode signal, or the internal B+ fuse could blow.]

Quiet DC supply for the input and driver tube filaments.

Excellent square-wave response, and very low excess phase-shift with
frequency.

Amp actually puts out 110W @ 5 ohm load @ 2 kHz @ onset of clipping,
117 VAC mains voltage, 3.5 amps mains current. 

100 W spec: 15 Hz - 40 kHz into 5 ohms

Puts out 100W into an 8 ohm load.

Snapper unit weight: 38 lbs.

NOTE: As of early 2008, the B+ fuse value has been changed 
FROM 0.4A (4/10th Amp or 400mA) TO 0.5A (1/2 Amp or 500mA).

Same type and location inside the amplifier. MDA 1/2A Ceramic SLO-BLO 1/4" x 1 1/4"

Applies to all Snappers.

Users with existing Snappers fitted with 4/10th Amp B+ fuses can uprate their fuses to the new higher amperage part should their 4/10th amp fuse blow. No need to change to 1/2A part until/if existing 4/10th Amp fuse blows.

Specifications:

• Input Impedance RCA: 475 Kohm
• Input Impedance XLR: 15 Kohm or 600 ohm switchable
• Input Sensitivity RCA: 750mV input = 110W output
• Input Sensitivity XLR @ 15Kohms: 1.5 V input = 110W output
• Input Sensitivity XLR @ 600ohms: 2.4 V input = 110W output (w/600ohm source)
• Gain RCA: factory set for 31 dB; Range = 29.5 to 34.5dB
• Gain XLR: factory set for 25 dB
• Negative Feedback: factory set for 9dB of global NFB
• Maximum Output Power into 5 ohms: 110 Watts (1.5% THD @ 1kHz)
• Maximum Output Power into 8 ohms: 100 Watts (1.5% THD @ 1kHz)
• Signal to Noise Ratio Ref. 1W: Typically 90 dB A-WGT 20-20K
• Noise Floor: Typically 105µV = -77dBu A-WGT
                      Typically 388µV = -66dBu unweighted
• Will Scratch Your Floor: Use pennies under pointed feet to avoid marring cabinetry. Try quarters if you are in upper tax brackets. The bargain performer would be nickels. Paper currency does not function as well. Euro coins work 1.54 times better. 
• Dynamic Range: 98dB
• THD+noise @ 1W: less than 0.1%
• Frequency Response at 110W full power: 15 Hz to 40 kHz FLAT
• Frequency Response at 5W into 5 ohms: 10 Hz to 65 kHz FLAT, -3dB @ 100KHz
• Recommended Speaker Load: Optimized for 5 ohms
• Actual Output Impedance: 1.5 ohms
• Power Consumption (idle): 170 Watts (1.4A @120VAC)
• Power Consumption (at Full Power 110W): 336 Watts (2.8A @120VAC)
• Operating Mains Voltage: Factory set for 100V, 120V or 220-240VAC operation for original destination country's mains voltage.
• Operating Mains Voltage: changeable with power transformer re-wiring and fuse value change.
• Mains Voltage Frequency: 50~ 60Hz
• Input Vacuum Tube: 1 x 12AT7EH large plate Electro-Harmonix Russian
• Driver Vacuum Tube: 1 x 7044 GE JAN NOS
• Output Vacuum Tubes: 4 x EL34GT (JJ from Slovakia)
• B+ Voltage: 570V DC
• Output Tube Quiescent Standing Current: 30mA
• Set Bias for: 300mVDC measured across 10 ohm cathode resistor
• Lamp type: "FuseLamp" size 1/4" X 1 1/4", 12 volt, 0.15 amp; Units built after 5/2003 use white LEDs
• Fuse values & types for: 120VAC operation: MDL or MDA 4 AMP / 250 Volt SLO-BLO size 1/4" X 1 1/4"
                                        240VAC operation: MDL or MDA 2 AMP/ 250 Volt SLO-BLO size 1/4" X 1 1/4"
• B+ FUSE: MDA 1/2 AMP, 250 Volt SLO-BLO CERAMIC BODY size 1/4" X 1 1/4"
• Dimensions: 15" deep x 13" wide x 8.75" tall
• Shipping weight each: 45 pounds

Snapper Factory Calibration notes