Mic Pre and Instrument Amplifier
The 517′s mic pre includes 66dB gain, and is based on the Portico 5017 design. The mic pre also incorporates a polarity reverse switch and phantom power. The separate instrument amplifier includes 30dB of gain, a ground lift, variable phase and an instrument Thru connection.
Used as a single channel device for instruments, the 517 can be used to phase align, combine and compress direct and amplified signals. To achieve this, use the DI for the instrument’s direct signal and the mic preamp for the speaker cabinet signal. The blend control is used for mixing direct and amplified signals to achieve the desired tonal blend between the two sources, and the variphase is used to minimize or extenuate phase cancellations between the two signals. To compress the blended signal, the internal compressor jumper must be set to the blend path (this is the default setting). This technique could also be used to create a single, mixed output of a guitar and vocals.
Based around a new LDR (light dependent resister) design, the 517′s opto-coupler compressor has been simplified to a single threshold control with auto make up gain. By default, the compressor is set to a fixed 2:1 ratio with fixed attack and release. To set the compressor, simply dial the threshold control down until the desired amount of compression is achieved. An LED light indicates when the compressor is active.
In addition to the standard polarity reverse, the 517′s vari-phase control may be used to adjust phase incrementally. This control is useful any time two signals derived from the same source are combined.
For instance, even with careful placement, the combination of close miced drums and overheads, can often yield hollow sounding results. By using the variable phase adjust, the direct signal can be phase rotated until the signals are naturally aligned.
This technique is also extremely useful when combined with the internal blend control on instruments. A bassist, using both direct and miced signals can blend the two into a single output, using the vari-phase to reach an optimal alignment. By adjusting the phase in the 517, the musician or engineer can find the absolute best mic position without regard to the phase relation to the direct signal.
Much could be written about this feature, suffice to say, that it gives a subtle option to enhance sound quality in the direction of vintage modules. The silk button reduces negative feedback and adjusts the frequency spectrum to provide a very sweet and musical performance. We suggest you try it and make your own judgment.
Mic gain is from 0dB to 66dB. Overall gain to restore the apparent program level
DI Gain is from 0dB to 30dB
Balanced or unbalanced Hi-Z input for instruments
Provides 48v phantom power to microphones. Controlled by the 48V switch.
Reverses the polarity of the mic input
When signals exceed the "threshold" level, the gain is reduced at a controlled 2:1 ratio, with fixed attack and release time constants.
Indicators on the 517 denote signal presence and clipping on both DI and mic signals, as well as compressor activation.
The includes a 1 Year return to base warranty. This warranty applies to all equipment which has developed a manufacturer defect during application. Please contact us to confirm the availability and lowest price for any product. For quotes and price matching requests, contact us and include the competing website address.
|Condition||Sealed / New|
|Free Shipping||Hong Kong|
|Delivered HKD Price||Shown at checkout|
Look no further than AudioBuy when buying gear online in Hong Kong , always at the lowest price with free shipping to all locations serviced by FEDEX. Please contact us for stock availability , price quotes , expedited shipping quotes or to arrange a return of your (for the full purchase price of ). You may return most new, unopened items within 30 days of delivery for a full refund. AudioBuy Hong Kong are very proud to carry a large selection of gear. You demand quality, reliability, and innovative design from your gear, and we're here to help you find exactly what you need. We're glad to answer any questions you have and you can always depend on AudioBuy Hong Kong to give you the best possible value on musical instruments and accessories with responsive customer service.
Online orders are confirmed in stock and ready to ship before payment is completed. orders ship FEDEX and will require signature upon delivery. Orders are typically delivered within 4-5 business days following dispatch. Fedex tracking details are provided for all orders.
Hong Kong is a free port and does not levy any duty on imports (or exports). There is also no sales tax or other import charges. The total delivered price for delivery to Hong Kong will be . Detailed information on import declaration procedures and import restrictions can be found at the Hong Kong Customs website.
- Buy products with confidence.
- Ships to most locations in Hong Kong including Kowloon , Tsuen Wan and Yuen Long.
- Return to base repair or replacement (1 Year return to base).
- Please contact AudioBuy.hk Hong Kong for detailed information about our warranty terms and conditions.