This is a pair of original Bowers & Wilkins B&W luxury P7/9 headphone driver, 40mm diameter and made in the US. It’s the best 40mm driver we can offer so far, and we highly recommend to update any <$200 headphones for immediate sound quality improvements. We’ve tested with many headphone shells in different sizes and from 100% open to closed cups, this driver performs perfectly.
Bowers & Wilkins luxury P7/9 headphones
Bowers & Wilkins has earned its place as the BMW of high-end audio. The company’s loudspeakers are legendary: Its five-figure Nautilus speakers have been displayed in museums; Abbey Road Studios has used their monitors for more than 20 years; and the company’s new 800 Series Diamond are receiving rave reviews. See commercial reviews like Bowers & Wilkins P7 Wireless headphones review: They sound better than the original, and community impressions on P7 and P9 on Head-Fi, (see more headphone reviews at Beginner Guitar HQ)
Upgrade your cheapo headphones right now
Our study clearly shows that most commercial headphones won’t spend the major budget on improving sound quality, especial those priced $100~250 Bluetooth headphones with fancy functions like ANC. So if you are an real audiophile and won’t mind to get your hands dirty, you should think about upgrading the driver unit by yourself! See tutorials on how to upgrade headphone drivers, and be brave!
1 Pair (2 pieces) 40mm Headphone Dynamic Drivers
if your headphone using dynamic drivers in different sizes (typically 50mm), please contact us for 40mm to 50mm adapters.
Most recommend to be used with our wooden headphone shell.
Note: the dynamic drivers have been paired to ensure sound and quality fully balanced between right and left channels. Therefore we don’t offer single unit.
- Diaphragm: Nylon damped cone
- Coil: high-strength copper clad aluminum wire (CCAW) and has been specially optimized for over-driven to increase the toughness and elongation.
- Luxurious 20-core 5N OFC coils offers clearer and more vocal than ordinary 13-core or 16-core coils.
- Frequency range 10Hz – 20kHz
- Impedance 22 ohms (passive)
- Distortion (THD) <1% (1KHz/10mW)
- Sensitivity 111dB/V at 1kHz
The diaphragm made by Nylon damped cone
The back panel
Proceed with caution: dynamic driver is with extremely fragile (1~5μm) diaphragm and can be easily damaged in following situations.
- Soldering: overheated (>250 degree C) soldering iron or overtime soldering (>2s) may permanently damage the driver. Please managed down both in your DIY.
- Installation: the driver has Sintered NdFeB Magnetic inside with extremely strong attraction power. Damage may caused by attracting anything hitting the fragile diaphragm.
- Others: applying high-voltage, storing in high temperature/humidity environment… all may cause unrecoverable damage.
bnngv (verified owner) –
My goal is is to have a compact headphone, with a 40 mm drivers, without spending a lot of money. You can buy a used headphone at any thrift shop, the fun part is like a treasures hunt.
I installed them into a SkullCandy shell, model is “lowrider”. The worst part is removing the original drivers from the shell without breaking the shell itself. With a little bit of soldering skill …. et voila I got a light weight headphone.
I have it “burn-in” for 72 hours intermittently, I use my ipad gen 7(classic),gen5, gen 4, connect to Fiio E17K ALPEN 2 . I change the volume up and down when ever I can. Is it necessary to do the burn-in, well …Yes! For me it sounds “better”, but it all comes down to your liking.
Sound: I am not a pro, but I am trying to describe what I hear from these drivers. It gives deeper tight bass, I can feel the thumb thumb sound not just hearing them, not muddy, it does not muffle other “notes’. Clear male voice and female voice not harsh. I do not feel tired listen to my music for one hour, I do not have time to listen beyond 1 hour. I also test it using same players through my Vintage NAD preamp Adcom GTP-500II Now, I stop using my Sony MDR 7506, but I still like the sound from this Sony MDR 7506, but my ears got warm after a while using it though.
I listen from classic to rock music. I have Sennheiser HD414, AIAIAI Track-Pipe-TM2 with S04 drivers, Koss Porta Pro, Koss KSC75, Mee M6, Mee M6 pro second Gen, Sony MDR 7506, but I put the AIAIAI TM2 in the side because the sound is not what I prefer. I like bass , bass is fun for me.
t1 (verified owner) –
Due to burnt driver in my Audio-tehnica ATH-ANC700BT decided to swap with custom drivers, now soldered them in , for now disabled ANC second mic due to return loop, will figure out this later 🙂 but audio quality is very good.
Thanks to support regarding delivery.
Sakarias Nordberget –
good! work for me very good, epic sound quality compared to my DT770s!
could not believe my eye when hear!
Sounds really great. Many details and just enough bass. I’ve put the drivers in an old 80’s Akai headphone of which the original drivers were damaged. So retaining the vintage look but enjoying perfect new sound. I believe my DIY headphones will defeat any <€300 headphones easily!