Audio Attenuators

Dual Attenuator
600 ohm

(AVA) 2T-321-G
Daven dual 600 ohm attenuator. "T" match - 600 ohm each section. 40 dB total + off. 2 dB / step. Continuous rotation. 1/4" diameter x 1" shaft. 2-3/4" diameter x 3-3/4" long body. Date code 1972, Alternate P/N: 554-0299-000.
 

Step Attenuator
50 Ohm In / Out - 20 steps - 2 dB / step

(AVA) T-320-B
Shallco step attenuator. 50 ohm in / out. 20 steps. 2 dB / step, 38 dB / off. 2-3/4"D, 1/4" shaft. New - Harris broadcast excess.
$289 each
 
$139 each

Audio Control
8 Ohm

(AVA) LP90S
Vanco audio control. 8 ohm, 30 watt RMS. 2-1/8" square dial plate with knob. Long neck threaded bushing for 1" thick panel.
 

Step Attenuator
150 Ohm In / 300 Ohm Out

(AVA) 11061-KU
Daven Dual Ladder step attenuator. 150 ohm input, 300 ohm output. Impedance, 20 steps, 2db per step, off and que. 2-15/16" body diameter x 2" long, 1.5"L shaft extention hardware (can be removed), 3-3/4" behind panel (2.2" removed), 1/4" shaft diameter, 3/4" front panel length.
$8.95 each - $8.30 (6+)
 
$169 each

Ladder Step Attenuator
250 Ohm Input / 500 Ohm Output

(AVA) 554-0199
Daven ladder step attenuator, continuous rotation. 250 ohm input / 500 ohm output impedance. 2 dB steps + off. SPEC 2574EF. 1.81"D x 1.88" behind panel depth. 1/4"D x 0.585" round shaft.
 

Step Attenuator
600 / 600 Ohm - 21 Taper Steps

(AVA) 554-0327-000
Daven chrome step attenuator. 600 / 600 ohm. 21 taper steps, 2 dB each including OFF position.
$135 each
 
***SOLD OUT***

HP Audio Attenuator
500 ohms In / Out

(EQP) HP-350A
Hewlett Packard audio attenuator. 500 ohms in / out impedance. 5 watts. 0 - 110 dB in 1 dB steps. Non-inductive. 115v, 50 / 60 Hz max voltage. 5" x 8" x 4-1/2" deep. Includes manual copy.
 

Dual Attenuator
600 Ohm

(AVA) 2519
Daven dual 600 ohm attenuator. 10 dB / step + off. 100 dB total. 1/4" diameter x 0.875" long shaft. 2-3/8" diameter body, 3-3/4" behind panel depth. NSN: 5905-00-954-8618.
$185 each
 
$225 each

Variable Attenuator
600 / 600 Ohm in 1 dB Steps

(AVA) 2517
Daven variable attenuator. T match. 600 / 600 ohms in 1 dB steps, 10 dB total. 1 dB / step + off. 2-3/8"D x 3-3/4" behind panel depth. 1/4"D x 1" round shaft. New military stock made in 1967. NSN: 5905-674-5801.
 

Variable Attenuator
3300 Ohm per Step / 36,300 Ohms Total

(AVA) 4242
Daven variable attenuator. 3300 ohm per step. 36,300 ohms total. 1-3/4"D x 1-15/16" behind panel depth. 1/4"D x 7/8"L "D" shaft. NSN: 5985-00-537-4072.
$275 each
 
$35 each

"Waters" Sound Board Pot
600 Ohm

(AVA) LM-6-205
"Waters" Audio 600 ohm sound board pot. Smooth professional feel. This exact model is used in McMartin Audio Equipment. Sold without knob as pictured.
 

Step Attenuator
10k Ohm / 2 dB Steps

(AVA) 11780
Daven step attenuator. 10k ohm / 2 dB steps. Taper off and cue. Includes end of rotation micro-switch that disengages the attenuator. 1/4" shaft. 1-3/4"D x 2-1/4"H. Made for use in Gates/Harris console. Harris P/N: 550-0380-000.
$75 each
 
$89 each

Slide Attenuator
150 / 300 Ohm in 2 dB Steps

(AVA) 11301-KU
Daven slide attenuator from Harris sound board. "Ladder" type. 150 / 300 ohm in 2 dB steps. Taper off and cue. Red knob. 1-1/4" x 2" x 6"L. Harris P/N: 554-0288-000.
 

Optional 7 Pin Connector

 
 
(CNE) 126-195
Optional 7-pin connector for Daven slide attenuator (left).
$189 each
 
$35 each

"Sound Effects" Control

(AVA) 7077HX
Cinema Engineering Co. "Sound Effects" control. FCO = VAR Z = 600 ohm. 300 Hz, 500 Hz, 1 Kc, 2 Kc, 3 Kc, 4 Kc, 5 Kc, 6 Kc, 8 Kc, 10 Kc & Off. New, old stock. Gates P/N: M4389.
 

Daven Attenuator Variable
10k Ohm - 28 Steps

(AVA) 430273-2
Daven attenuator variable. 10k ohm, 28 steps. 1/4"D x 1"L shaft. 4-1/4" diameter face plate. 5" overall length.
NSN: 5985-00-714-8875.
$175 each
 
$75 each

Step Attenuator
24 dB - 12 Steps, 2 dB Each

(AVA) T-994-4
Shallco step attenuator. 24 dB. 12 steps, 2 dB each. Detents. Two 3 terminal attenuates in one. 1/4"D shaft, 7/8" long. 2-1/4"D body. Mounts by two 10-32 taps on face. Made for Harris Broadcast.
 

Step Attenuator
25.6k Ohm

 
(AVA) 2282
Shallco rotary attenuator. 25.6k ohm total resistance. 48 step continuous make before break rotation. 2-3/4"D body. 1/4"D x 15/16"L shaft. NSN: 5905-00-376-9925.
$95 each
 
$125 each

Audio Attenuator
40 dB - 600 Ohm In / Out

(TA) H-691
Shallco attenuator. 40 dB. 600 ohm in / out. Octal base.
 
$19 each