[Closed] The group buy is closed now [Closed]
This thread provides a purchasing option for the 1-inch compression driver DFM-2535R00-08.
The driver is not available anymore in single units and hence unobtainable for consumers. With this group buy in cooperation with a Tymphany distributor from Germany DiYers can once again purchase a pair of the much discussed and HiFi-optimized compression driver that has some special properties.
The price for one driver DFM-2535R00-08 will be around 40 Euro excluding VAT. As an example, for buyers from Germany with 19 percent VAT, the end price is about 48 Euro total. Plus shipping from Germany to your destination. In general, it is possible to ship world wide, depending on your willingness to pay the costs. EU shipping is standard.
Please enter your contact details and the amount of drivers you want to buy in this google forms link: https://forms.gle/zszS5UC68y8xskvJ6
The condition for the distributor to stock the lot is an order of a minimum of 50 pairs / 100 pieces.
When the necessary amount of buyers is reached, we will proceed with transaction. This can be done via bank account or PayPal.
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Some facts on the compression driver DFM-2535R00-08:
The compression driver is optimized for high quality sound reproduction, combining a polyimide surround with a coated titanium diaphragm. Thus it equally provides the benefits of a TI diaphragm, that is detailed high frequency reproduction, while also enabling the smoothness of a polymer surround. Additionally, it enables a low crossover frequency of 1 kHz LR24, making it a perfect fit for 2-way home audio speakers with waveguides. This compression driver is not optimized for high SPL.
[1] Distortion measurements. A crossover at 1.1 kHz LR24 promises <1 percent distortion for 96 dB at 1m throughout the passband (HD2):
-> source
[2] Burst decay. The main resonance of the diapragm is pushed to the very high frequencies:
-> source
[3] Detail images of the driver construction courtesy @Zvu:
-> source
[4] Review from audioxpress
https://audioxpress.com/article/peerless-by-tymphany-dfm-2535r00-08-compression-driver
This thread is not to discuss the driver, please use the technical threads instead. If you want to share this group buy on another board, you are welcome. Please send me a message so that I know.
This thread provides a purchasing option for the 1-inch compression driver DFM-2535R00-08.
The driver is not available anymore in single units and hence unobtainable for consumers. With this group buy in cooperation with a Tymphany distributor from Germany DiYers can once again purchase a pair of the much discussed and HiFi-optimized compression driver that has some special properties.
The price for one driver DFM-2535R00-08 will be around 40 Euro excluding VAT. As an example, for buyers from Germany with 19 percent VAT, the end price is about 48 Euro total. Plus shipping from Germany to your destination. In general, it is possible to ship world wide, depending on your willingness to pay the costs. EU shipping is standard.
Please enter your contact details and the amount of drivers you want to buy in this google forms link: https://forms.gle/zszS5UC68y8xskvJ6
The condition for the distributor to stock the lot is an order of a minimum of 50 pairs / 100 pieces.
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We have currently reached: ████████████████████ 120%
+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
We have currently reached: ████████████████████ 120%
+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
When the necessary amount of buyers is reached, we will proceed with transaction. This can be done via bank account or PayPal.
- - - - - - - - - - - -
Some facts on the compression driver DFM-2535R00-08:
The compression driver is optimized for high quality sound reproduction, combining a polyimide surround with a coated titanium diaphragm. Thus it equally provides the benefits of a TI diaphragm, that is detailed high frequency reproduction, while also enabling the smoothness of a polymer surround. Additionally, it enables a low crossover frequency of 1 kHz LR24, making it a perfect fit for 2-way home audio speakers with waveguides. This compression driver is not optimized for high SPL.
[1] Distortion measurements. A crossover at 1.1 kHz LR24 promises <1 percent distortion for 96 dB at 1m throughout the passband (HD2):
-> source
[2] Burst decay. The main resonance of the diapragm is pushed to the very high frequencies:
-> source
[3] Detail images of the driver construction courtesy @Zvu:
-> source
[4] Review from audioxpress
https://audioxpress.com/article/peerless-by-tymphany-dfm-2535r00-08-compression-driver
This thread is not to discuss the driver, please use the technical threads instead. If you want to share this group buy on another board, you are welcome. Please send me a message so that I know.
Last edited:
Great! If you can, please leave me your contact information in this google forms https://forms.gle/zszS5UC68y8xskvJ6
Burst decay spectogram (1/3 octave resolution ) of the DFM-2535 on an 520 mm diameter Ath Gen2 waveguide. For this, the frequency response was linearized between 1 kHz and 20 kHz.
Waterfall graph of the DFM-2535 on an 520 mm diameter Ath Gen2 waveguide.
Equalized frequency response.
34 drivers left: https://forms.gle/zszS5UC68y8xskvJ6
Waterfall graph of the DFM-2535 on an 520 mm diameter Ath Gen2 waveguide.
Equalized frequency response.
34 drivers left: https://forms.gle/zszS5UC68y8xskvJ6
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We have currently reached: █████████████████░░░ 85%
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We have currently reached: █████████████████░░░ 85%
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Here are some examples for commercial waveguides and horns that allow for a 1 kHz crossover.
18Sound XT1464, 60 x 50 degree:
Celestion H1-9040P (ex. Monacor MRH-200), 90 x 40 degree:
-> source
15 drivers left: https://forms.gle/zszS5UC68y8xskvJ6
Good news: since yesterday, we have crossed the 90 percent mark. There is now only five more pairs until we reach the minimum order amount required.
Please sign up here if you want to buy the DFM-2535: https://forms.gle/zszS5UC68y8xskvJ6
I wish you all a pleasant Sunday!
Best regards
Please sign up here if you want to buy the DFM-2535: https://forms.gle/zszS5UC68y8xskvJ6
+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
We have currently reached: ██████████████████░░ 91%
+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
We have currently reached: ██████████████████░░ 91%
+ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
I wish you all a pleasant Sunday!
Best regards
I assume the carrier will probably be DHL, and I do not know if there are special rates in place for businesses which we can benefit from. This said, the international shipping rate to the US available to private customers is currently 47.99 EUR. So probably in this ballpark region.
More information will be available when I transmit the list to the Tympahny distributor / dealer once the minimum order amount is reached. Possibly the week after next week.
More information will be available when I transmit the list to the Tympahny distributor / dealer once the minimum order amount is reached. Possibly the week after next week.