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Dayton Audio D250P-8 1" Polyimide Compression Horn Driver

Brand:| Model: D250P-8
Product Video
Overview
The Dayton Audio D250P-8 compression driver features a polyimide diaphragm for a smooth character and rich detailed sound. A true rear-diaphragm design with advanced phase plug provides low distortion and excellent sonic detail.
Highlights
  • 1,000-20,000 Hz frequency response
  • Optimized ferrite motor structure
  • Polyimide diaphragm for smooth, detailed reproduction
  • High sensitivity and power handling
  • 2-bolt/3-bolt mounting for a variety of applications
Part # 
270-402
Weight: 4.45 lbs.  
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List Price$69.99
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Part # 270-402
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Product Details

Dayton Audio D250P-8 1" Polyimide Compression Horn Driver

The D250P-8 compression driver from Dayton Audio delivers sonic accuracy, power, and detail, thanks to an optimized acoustic and electromechanical design. Its robust ferrite motor is powerful yet economical, providing extended high frequency response and incredible dynamic impact. The precision polyimide diaphragm assembly is field-replaceable and features nickel-plated, spring-loaded push terminals for pro-grade serviceability.

Designed for demanding professional audio, custom cinema, or high-efficiency home audio applications, this driver is a full-spectrum performer and a true high-value choice.  A 2-bolt/3-bolt mount design allows the D250T-8 to be used with many popular horns. Please see the Related Items section for the replacement diaphragm. Mounting hardware is included.

Specifications: • Power handling: 60 watts RMS/120 watts with minimum crossover of 1.6 kHz/12 dB slope • VCdia: 1.7" • Impedance: 8 ohms • Frequency response: 1,000-20,000 Hz • SPL: 104 dB 1W/1m • Dimensions: 4.7" diameter x 2.2" depth • Net weight: 4.5 lb.



Product Specifications
  • Mounting Type2-Bolt/3-Bolt
  • Exit Diameter1"
  • Diaphragm MaterialKapton / Polyimide
  • Impedance8 ohms
  • Power Handling (RMS)60 Watts
Dayton Audio D250P-8 1" Polyimide Compression Horn Driver
  • BrandDayton Audio
  • ModelD250P-8
  • Part Number270-402
  • UPC848791000010
  • Product CategoryHorn Drivers
  • Unit of MeasureEA
  • Product Rating
    (1 Reviews)
  • Weight4.45 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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View similar products to the Dayton Audio D250P-8 1" Polyimide Compression Horn Driver
in the Horn Drivers product category.

Reviews

Dayton Audio D250P-8 1" Polyimide Compression Horn Driver
Dayton Audio D250P-8 1" Polyimide Compression Horn Driver is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from PhenominalI am working on a horn speaker project using all Dayton components. The one thing I was lacking was an HF driver, that had high enough sensitivity to keep up with the rest of drivers. Then low and behold I see Dayton compression drivers in the new products directory. After a quick comparison of specs I chose to give the Polymide driver a shot. Overall I am very pleased with the sound and performance of this driver, and will continue to use it in my future projects.
Date published: 2012-11-27
  • 2015-07-07T06:37CST
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  • clientName_PartsExpressInternational

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio D250P-8 1" Polyimide Compression Horn Driver

O.K., I'll re-phrase the question. Tech data sheet lists spl as 104 dB 1W/1M (therefore maybe approx. 105 dB 2.83v/1M) while freq response chart (on h812 horn) indicates 108 dB @1M +/- 2dB from 1-10khz. Please clarify.

Asked by: RichZ
Different horns will have different effects on the sensitivity of a compression driver. The H812 is a constant-directivity horn with a throat section that provides more gain. The SPL listed is a plane-wave sensitivity and will change with whatever horn you decide to use the driver with. You will need to measure the compression driver on your horn of choice, and then use that data to develop the crossover design that will properly integrate the woofer and HF horn. Another way to integrate the two is to use an L-Pad after the crossover but before the compression driver to make the horn "adjustable" for whatever sound reinforcement situation you find yourself in.
Answered by: DaytonAudio_Rory
Date published: 2015-02-23

The frequency response chart for the d250p-8 specifies the horn used (h812) and that the measurement was taken at l m distance, but voltage drive level is not indicated--what voltage drive level was used to generate this chart? Thanks.

Asked by: RichZ
Voltage level for all Dayton Audio measurements is 2.83V/1m (except for some very small drivers in the CE-series that might be damaged by 1-watt input).
Answered by: DaytonAudio_Rory
Date published: 2015-02-17

I have 2 of these drivers in my setup, each produce a static noise that can only be heard at low volume, just loud enough to be annoying. I've run them on different amplifiers and audio sources so it is the drivers fault. Any way to fix this? 

Asked by: tyler99
Keep in mind that these are very high sensitivity tweeters, so if there is any hiss or AC line hum or buzz, it may be reproduced at a higher level through these tweeters than it would be from a typical dome or cone tweeter. If the noise is only noticeable when music is playing, be sure that you are operating these drivers with a crossover of 2000 Hz or higher, and if yes, then it is possible that one or both of the voice coils may be rubbing against the sides of the magnetic gap. This can be solved by replacing the diaphragms, or returning both complete drivers for warranty replacement. Alternately you may be able to remove the rear cover of the compression driver and attempt to center the diaphragms yourself, but when properly seated, the diaphragm voice coils should be centered in the magnetic gap. Before you attempt this, however, be sure the magnetic gap is clear of any metal pieces that could be causing the noise.
Answered by: DaytonAudio_Rory
Date published: 2015-02-02

Can I wire this driver in parallel with the titanium version of this? One of each. Or will this give problems in responce/ powerhandling/ etc.?

Asked by: leonveek
You can use the polyimide driver and the titanium driver in parallel with no problems if desired. The only difference between the drivers is the diaphragm material.
Answered by: DaytonAudio_Rory
Date published: 2014-12-01

Will this work with with this waveguide?         http://www.parts-express.com/community-1-exponential-horn-90x40-non-standard-2-bolt-for-uc1-compression-driver--299-522

Asked by: justwonder
Unfortunately no, the bolt spacing on the horn is 91mm and is a proprietary fit for the Community UC-1 driver.
Answered by: MattP
Date published: 2014-06-30

What is the best and cheapest compatible horn or waveguides for this dayton driver?

Asked by: victorino
The cheapest compatible horn lens that will work with this driver would be in the link below:http://www.parts-express.com/prv-audio-wg11-25-b-90-x-60-abs-waveguide-2-3-bolt--294-2846
Answered by: MattP
Date published: 2014-05-19
  • 2015-07-07T07:35CST
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