Acoustat Spectra 11

Download the Acoustat Spectra 11 brochure
Download the Acoustat Spectra 11 schematic
Download the Acoustat Spectra 11 owners manual
Request the Acoustat Spectra 11 service manual


General information[contribute]

The Acoustat Spectra 11 is an electrostatic speaker. It is part of the Spectra hybrid series. It was manufactured from 1989 to 1992. In 1989 its price was $1000.

Related models

The following models were also produced in the Spectra hybrid series:

Acoustat Spectra 1100


Modifying the Spectra 11 (by Sharlotte K. Gibson)

Forum topics on the Acoustat Spectra 11

The following topics regarding the Acoustat Spectra 11 have been found in the forums. If you want to start a new topic, click here.

Adjusting til Ultrasonic Bias
Amplifier recommendations
Balance components?
Boards almost omplete
Boards Complete
Cross-overs, cross-over point
Crossover question
crossover question
Different versions of interface/crossover? Overall restoration.
Drawings of the cabinets
Dull output from ESL output
Electronic unit failure
Extra resistor in parallel with driver?
FREE pair / parts!
Impedance profile
Interchanging 11 drivers with 1100 \'s?
Interfaces, integrated circuits
Interfaces, interface burned
Interfaces, modification
Interfaces, replacement transformers
Interfaces, resistors
Interfaces, transformer problem
Interfaces, two sets
Lacking level
Need help to refurbish top panel
Output, amplifier producing heat
Output, bi-amping
Output, efficiency difference in panels
Panel inop
Panels, arcing panel?
Power handling
Price for broken Acosutat Spectra 11
restoration of original crossover components
scratchy sound
Setup of Spectra 11s ?
Specta 11 Wall wart info
Two top panels failing
Various, biwiring
Various, Improvements
Various, manual needed
Various, opinion on favorite Acoustat speaker
Various, questions
Various, SDAC and Acoustat speakers
Various, Thielle Small parameters
Various, woofer reconing
Wall transformer
wall transformer
Wall transformer
Wall transformer replacements?
what is the impedance for these speakers, and anyone used them with MC-240 tube amp?
Where can I find a replacement for the part labeled TTA-ULT3?
Whistle on Panel
Woofer Upgrade
Woofers do not provide any signal